Porting a turbo. We have some cars that run 60lbs.
Porting a turbo Its not needed to make that kind of HP, but it is one of the most important parts of making the most hp you can. Most don't have a clue as to what it takes as is goes beyond just porting a couple inches past the flange into the housing. My opinion, a VF is still a small-ish turbo, no amount of porting and polishing will make up for the fact it cannot flow enough air to keep up with a 2. The turbo is maxed out and makes about 16-17psi. FWIW, my buddy has an 04 sti with that's Cobb stage 2 + ported heads, and I'm stage 2 + e85 and an intake and he doesn't fall too far back on a nice pull (2 cars on him by 75mph). The inside of the block can be ground and polished to help with windage and oil return to the oil pan. Is porting the whole turbo worth it? How much power gains will I see? Currently I'm running a full exhaust (stock up pipe), fuel pump (walbro 255), and tune. Ported Shroud Compressor Housing is designed to increase your turbo life by eliminating the damaging effect of compressor surge. 00 for 12A & 13B GSL-SE. A notable Looking to get my 317 heads cnc ported for my twin turbo build. I wouldn't mind having turbo spool a bit quicker but 100 rpm less may not be worth the time , money or hassle in pulling everything off. Does anyone have any other suggestions on who is good? Thanks for your time. 32 MPH (Engine Mount + Down/Mid pipe + ported intake + SUPER 14GT turbo + water/meth TUNE) Best MPH15. Also, the bowl under the valve head was relieved to smooth out the mold marks and eliminate the bottleneck at the elbow going from the bowl under the valve to the turn towards the exhaust manifold. Areas For Port & Polish:-Turbo compressor side ported at the inlet porting in some aspects are overrated, in others not quite, when your motor's volumetric efficiency requires port work you've got major coin in your build. Air flow will be improved through the head and power gains are achieved. Join Us. 200 up to . An understanding of these parts and their operation is helpful in the design and installation of a good turbo system, and is critical in porting a turbo Engine, Transmission and Drivetrain Car Forums . Come back later if you want to read more about the theories behind porting an Well, it depends; With an N/A motor, port velocity should be high on the priority list as it also should be in engines with turbo's or superchargers, unless you like an engine that bogs every time you step on the gas. porting matching will help. 0. 0L Turbo) Welcome to the North American Subaru Impreza Owners Club: Monday April 21, 2025: Home: Forums: Images: WikiNASIOC: Products: Store: Modifications: Upgrade Garage The port will go on the turbo mounting flange right above #4 port. 20x12's on 305/50 toyo's w/ decranked keys and 2 inch rear lowering shackles. Perhaps just a mild port is all that is needed All SoCal Porting turbochargers include upgraded internal bearings to support higher thrust loads and boost pressures. What kind of gains should I Because It’s Ported, This is especially true with turbo cars. A good cold air intake If airflow though a valve port is plotted on a graph for the entire valve cycle (from opening to peak lift and back to close), the area under the curve is total airflow, which corresponds to total power. 5L Turbo) 0: 07-13-2005 11:00 PM So if you are putting 10 psi into an engine then that same 10 psi on the ported head combo is different than the 10 psi on the non-ported head combo so of course it will make more power with the ported head combo. list goes on. I know my K03s wastegate was opened a lot and I had to lower EGT threashold valve a good amount to avoid running lean for about 300-500rpm after the load stabilized(so no more fuel enrichment or accel fuel) but the full lambda map wasn't triggered yet it would try and If its ported too much you will have turbo lag. We do have the phase one and we will probably be making two phase 2's. 1990eclipseGST. Testing David Vizzard's ported turbo housing. 800 what will be the difference? Is there a difference between turbo porting vs n/a or nos porting? Will the turbo specific head make more power the the na/Nos head and why? In this video I show you a real simple way to achieve a nice port and polish on a Exhaust manifold without the hard man hours. 22 MPH (Engine Mount + Down/Mid pipe + ported intake + STAGE 1 93 Octane + water/meth TUNE) I've seen a turbo engine make barely 2% more power at the same boost, even with hugely heavy porting and larger valves, despite being a 1960s pushrod 2 valve setup that was already pushing over 170bhp per litre. 89 Plymouth Voyager - 10. However, Defiant's porting guy has manged to get some very respectable flow numbers from the 7M head. Go progressively larger until you have the hole sized for your probe. I ported the exhaust after I had to replace a cracked manifold. 0 and still be able to use it. One with the stock turbo/upgraded intercooler and possibly a second phase 2 option for the ported turbo/upgraded intercooler. Four-valve-per cylinder diesel cylinder heads have the valves rotated in the combustion chamber. When porting you just reallly want to do minor changes for a turbo car. Pulling turbo off to change some things and thinking I may pull exhaust manifold as well and do some porting and polishing if it may be worth it. Because it was the first DMX turbo he did (my ebay special) he charged me a very bare minimum to port it. 5L & 9k rev! Leaving the other header still connected. 0L Turbo) 10: 09-14-2005 05:49 AM: Benefit of rotated mount turbo A quick guide on how to port your internal wastegate to eliminate boost creep & aid boost control. I thought I'd share some photos and my initial assessment of the turbo and talk about porting the compressor housing. The benefits of porting your turbo exhaust manifold are: allowing Has anyone on here tried porting and polishing the turbine or compressor housings on their turbo? Did you notice any difference in performance? I’ve done my TD04-13T but am My engine is big, 421ci. While I have everything apart I was planning on doing some porting to the head and intake. of boost. Since the TDO5 turbos are notorious for creep, it generally helps to port the 14b. Has Turbo parts for the turbo Miata! Thats right, we are finally getting to the good stuff! I was fairly surprised the condition of a few of these parts, especia Porting a turbo is an attempt to quicken spool and allow more air to be pushed into the engine. New posts Search forums. I'd reach out to someone like Head Games and discuss your goals and see what they say. We have some cars that run 60lbs. porting a turbo. But wait, don't get too blown away just yet! It's not all about the boost; there are many more turbo-charged benefits to this process, which we'll dive into like a vette diving into a hairpin turn. Light Bar, Dragonfire Bumpers, Factory Utv Skid plate/Rock Sliders, SSV 8 Speaker Question? If you have a head that flows 380 cfm that is not a turbo specific head and then you have a ported turbo specific head that flows the same cfm from . Any hotrodded turbo diesel can eventually get to the point where the cylinder head is an impediment to power output. The smaller the ports, the higher the air speed, meaning better fuel atomisation (for a better burn) and (in a turbo) less lag. Porting - maybe worth it, depending on what In most cases porting will allow you to not push the turbo as hard to get the same performance and keep the engine cooler. Lot of trimming:rof We take apart a Holset turbocharger and port the rear housing, also known as the exhaust or turbine housing. Hard to imagine it could be any other way when you boil it down to a ports requirement being based off of inertial tuning vs boosted performance. Our Community is 940,000 Strong. (208) 879-2969 Has done alot of cummins head porting they ported one head, 12 valve for a customer single turbo made around 1300 Hp before it melted the turbo. V3 MGT2259 turbo upgrade 2015 In terms of cost vs benefits, port work on a relatively small turbo won't see huge gains compared to cost for teardown, port work, and re-install. The benefits of porting your t To the majority of you out there with turbo diesels, improvements in the cylinder head ports and valve pockets will be a ways down the “Round-To-It” list. For N/A small intake ports are good and good flowing Intake port entry enlargement, surface finishing and port matching. porting a cylinder head without a done block IMO is money spent in the porting a turbo? 560 Views 3 Replies 2 Participants Last post by EvilVento2. Socal porting rebuilt my turbo very fast and in time to get my car on the dyno I can't thank Ruben enough! Customer service was unbelievable! I took my turbo to every shop in Denver and they told me to trash it and that it was not Turbo parts for the turbo Miata! Thats right, we are finally getting to the good stuff! I was fairly surprised the condition of a few of these parts, especia I recently purchased an 04. That depends on what you’re trying to achieve with your engine build, but in general, when you upgrade to a bigger turbo or higher lift/duration camshaft and your cylinder head starts to become a bottleneck in the system – it’s time for some head work. 1; 2; 3; Next; Dan Dryden Posts: 488 Joined: Mon Nov 05, 2007 9:56 am. While porting is still a popular engine modification, in recent years, the 13B Turbo motor has taken over as the main engine conversion for many older Mazdas, mainly due to their lower prices and There can be quite a substantial difference in the design of a port for a roots vs turbo vs N/A. Factory 2. 00 spent porting this head is worth the money in the end. 63 stage 1, dual core IC, UDP, A520 trans w/moly plate, 8 puck clutch. It would require a custom tune to open the wastegate sooner. ATS manifolds and up pipes, Stock turbo (for 1 more weeks), airdog 150, pieced together trans, sleeve (trac bars and centerlink soon), 8" rear air bags-overload springs+2" blocks, bilstein 5100 shocks However the porting never means that creep will go away. results. I don't remember what he If you have not done any head porting before this isn't the head to learn on. Because of our included port and polishing and use of Garrett housings, we have been known to have the best usable POWER for a FA turbo this size. DallasDub94 Go Kart Newbie. Brian Tooley is about the only one that comes to my mind. Once it was off I took about 10-15 minutes with a die grinder to port it out. Bridge Port (Level 3 Rebuild or above required) $850. Maxwell Power Services 2. My initial observations is that this turbo is built from a VNT15 (GT1749v). badassperformance. Porting a stock turbo housing. That’s why asking for a flow sheet is so irrelevant. T-flow ive got a turbo performance cam kit from ipd, is it worth wilst im doing it to get the head ported and polished aswell or is it not worth it ? Forums. oT, Dec 5, 2003. 0L Turbo Powertrain (EJ Series Factory 2. non-ported vf34: silverstreakwrx: Factory 2. The most common sizes are 1/8" NPT and ¼" NPT. If you want to maximize throttle response: Minimize pre-turbo restrictions. Where boost presure climbs, power out put is not rewarded as an engine with a sought out port/cam combo. The factory Garrett turbo housings are retained to insure a factory fit while also keeping a stock look. This is it next to the stock turbo so you can see the difference in size. A turbo rotary engine can also receive a porting along the lines of a mild or extend port, bridge-porting a turbo motor is possible, but it is rare. CFM only helps HP/Boost, if the port can handle the presure. Most parts ported have to do with air flow, the direct path to power and high VE in the engine. Why such a small wastegate was used by Mazda is a little bit of a mystery, because even vehicles with much smaller turbochargers will employ wastegates twice as large as the Hitachi turbo used in the RX-7. 74@132. Should go without saying that the exhaust port sizing requirement will go up with power adders. What's new. : removing that extra amount of As far as the porting cost, Dave spent the better part of 4 hours on it. We're putting this on the S550 this week and we will have the dyno results by early next week! What I can say is that depending on your turbo and uppipe, porting the inlet on the turbine side may or may not help spool. I ask this because I have a machine shop who says they have done it “The biggest thing that changes on supercharged engines is the exhaust side. What kinda porting tips can you guys give me and The benefit of a ported shroud compressor cover allowing more surge protection can be seen in this compressor map where two maps are superimposed showing the same compressor with and without inducer bleed. $1100. oT Discussion starter Yes, porting a supercharger does increase boost. 5L Turbo) Porting a stock turbo will most likely result in a over boost spike during boost onset. Advanced port timing gives awesome power through the midrange and spools turbos a lot quicker. 00 for 4 port Turbo. When performance products are added to increase horsepower, the compressor wheel accelerates faster and compressor surge and flutter becomes more apparent and damaging. Start by drilling a relatively small hole where you want your port to go. Also, if the manifold/turbo ring gasket isn't used, the step in the turbine housing causes a lot of turbulence and loss of flow. Pay close attention to the way the area above the intake valves is shaped to direct air flow in the cylinder bore. I could recommend an excellent shop if so requested and the cost is reasonable. Porting, when done properly, does help with boost creep, however. you port and polish a turbo to help it spool faster. Most fall off if the port is off as boost level's get high. 5l at high RPM. Once I took off that clamp the exhaust housing slid easily off the back of the turbo. In untreated heads, incoming air must pass up and over obstructions caused by irregular Stock turbo(s) and computer works just fine, although some form of fuel enrichment should be used. 34L Built Motor. 311 At 92. I currently have the engine out and tore down for a head gasket replacement and cam swap. 5L Turbo) 25: 10-13-2012 10:24 PM: What are the benefits of a built engine with turbo? wReXeRw: Built Motor Discussion: 8: 10-16-2006 07:14 PM: benefit of turbo timer: lvperuano: Factory 2. The porting "goals" on the SL6 exhaust side is to have smooth flow out of the chamber, across the valve seat and into the port "pocket". Ok I know Ats sells a turbo housing that is 1. 5L Turbo) 1: 12-18-2005 06:40 PM: P&P td05 18g vs. Maximum airflow through the the compressor and turbine is determined by wheel size 2) What is port matching?The intake runner opening, or port of entry, is where incoming air enters the head. 00 for 20B. non ported vf34: swift2fly: Factory 2. The guys I know (knew) usually used a flow bench to keep UPDATE: Port and polish job is complete and I got the car back. com BadassPerformance YouTube Check out Turbo-Mopar Times! how much material do you think was removed from the exhaust outlet??? i ported my lly turbo and added a batmowheel last year. EvilVento2. 00 Performance valve job is available for a fee. If you are going to go big with the 7675 you'll see more of an advantage with the ported head. sometimes but definitely not always. $850. The "book" I typed in this field before didn't save. Mar 28, 2019 #13 2003 LB7 LT PPE standard 5 inch straight pipe exhaust , New injectors july 2012, new pump regulator, AirdogII 165, ported stock turbo, ported intake. The max effort head will make the car lazy into boost. 09-24-2006, 11:30 PM Mazda RX7 Engine Porting. V4 UPGRADE, $1005 and it includes the upgraded billet wheel and turbine shaft, machining, recontour, clipping, rebuild, and full porting and polishing! This turbo is rated for 500+WHP using the We have a turbo specific K series port that has thicker side walls, and we pressure test port and water side to 100psi. Any idea if there is a upgraded bearing T2 conversion, stock rebuilt 2. Porting a 35R hotside will slow spool? WTF!? Factory 2. It seems there are a lot of misconceptions about turbo porting, and maybe some people would just like to know the process. But the stock is like 0. I do the head, and exhaust manifold for 1050. This write-up attempts to answer all those questions. Once the head is ported it would need a full valve job to blend the port work into the seat. There is a chance you could make it worse if you port it incorrectly, though. It will be interesting to see if the 750. Because of our included port and polishing and use of the Garrett housings, we have been As for porting most turbos will spool significantly faster if you port the exhaust manifold and turbine housing on the exhaust side. 0L Turbo) Welcome to the North American Subaru Impreza Owners Club: Saturday November 18, 2023: Home: Forums: Images: WikiNASIOC: Products: Store: Modifications: Upgrade Garage : One thing to add to this is watch out when wastegate porting and using off the shelf tunes. But im gonna throw the exhaust housing on a lathe and bore the exhaust outlet and see how that goes. Porting a Turbo motor. Definitly can't wait ! ! ! Laroy Engines in Challis, Id. Basically the more air a turbo pushes the more power you can attain. Street Porting: Gas mileage is typically not affected. I've had guys on little 61mm setups gain over 100hp with head and cams and guys on 72s gain over 200. E. 40 MPH (Engine Mount + ported intake + STAGE 1 93 Octane TUNE) Best MPH time 15. Click to Drop Down-Intake Porting-Street Port-Half Bridge Port-Full Bridge Port--INTAKE PORTING---Manifold Runners- Port matchPort matching the manifold runners to the engine ports will reduce Turbocharger Rebuilding Service. In this video I'll be porting the turbine housing of a GT2 I'll fill this in later. SoCalPorting inspected and disassembled the K04, ported several areas and included in the price was an exhaust coating with 2 coats of -Techline Turbo X-. Regardless, this problem is an easy one to cure. Getting Started First off porting your turbo will not yield any additional peak power. The dyno mimics the flow sheet in this case. On the way home it set an overboost code, which tells me the extra airflow made the turbo spin harder. Peripheral Port (Level 4 Rebuild Required) Call as Gt30 eBay turbo port and polish the turbine inlet and outlet follow me on instagram @formidable_lude TD04 port and polish help requested. I'm trying to reduce backpressure, I have not measured it but I'm sure it is through the roof. I am not shooting for huge HP but I In this video I show you a real simple way to achieve a nice port and polish on a Exhaust manifold without the hard man hours. Turbo or n/a? If its turbo, you want more volume (usually) and n/a less volume. I ported the elboe adapter just to see what would happen, seat of the pants it made a difference. Long Rod, De-stroked 2. . Tim’s Turbos rebuilds and sells turbochargers for a full range of makes, models, and equipment, from cabs that haul trailers across the country to back hoes on construction sites and diesel engines that We do not offer any canned tunes. in 6th gear where i would spike at 20 - 21 psi i now hit 24 - 25psi with no retuning and boost adjusts on my revo settings. 2 T2 engine, TU 3 bar +40's cal, ported G head, 88' roller cam, 2 piece intake, 3'' exhaust, ported exhaust manifold, S70 w/. The 90 degree intake air tube, and the exhaust manifold, I ported both. But other things like porting the fluid path is important, oil and water flow. Most commen so far on a TD Turbo Slant 6: Joined: Sun Aug 25, 2013 9:14 pm Posts: 759 Car Model: I have been reading and saving posts that I find whilst searching the slant sites, I have some questions. Automotive Forums . We offer a few different types of engine porting. If your turbo has a seperate O2 housing after the turbo housing you may want to port that as well, that should help spool up time also. I'd call him or PM him and ask what he would charge. The turbo would be putting out more airflow because the turbo is spinning faster to create the 10 psi setting. “If I roughed the port out and the air speed starts backing up at a certain lift Porting a turbo Factory 2. It will make more jam, but where it makes the jam is what you should be concerned with. The compressor housing and exhaust manifold appear to be stock Garrett castings which have been machine out to fit a larger compressor wheel and a Best ET time 15. $700. $950. I am narrowing the divider, port matching and taking out the valve guide humps for my exhaust side and I will see how that does on my car. The real benefit of porting in an FI setup is this second aspect. I doubt there would be any huge gains in porting the intake side of the turbo. this make it easier for air to escape out of the waste gate and should cut down on the creep issue. -V3 TURBO UPGRADE. “A turbocharged engine would want a smaller exhaust port than an NA engine would to help keep the airspeed up and help spool the turbo. It would likely cause surging on the hwy or cruising in low rpms. I am gonna add finger's vanes and polish and port some more over the winter. If your no, porting a 7cm won't make it like an 8cm. Having trouble controlling your boost, or "Boost creep" issues? This video will show you how to port your turbo's turbine housing and wastegate port, as well as match it to your car's From a fluid mechanics standpoint, with the same pressure differential between the throttle and the cylinder (ie constant amount of boost), you will get higher air flow rates (and I am going to have my turbo apart for a rebuild and was wondering if porting and polishing the thing is really worth it. In a turbo or supercharged engine bigger is usually better as the air is being forced into the engine but the entire inlet and exhaust channel should match the dimensions of your new port sizes. 5L Turbo Powertrain (EJ Series Factory 2. You get same flow volume at a lower boost level and better (more efficient) removal of waste burnt gases after combustion. 833 At 89. While porting involves a certain amount of “voodoo,” elaborate $600. Discover Gary Smith’s 1,000-HP LML Duramax-powered GMC Denali – a compound-turbo diesel build engineered for performance, reliability took a few picks today after i ported a LB7 turbine housing, just thought id show everyone how restrictive the stock turbine housings are. The car pulls much harder and much smoother and at 6000rpm im still at 16psi which is up from the This velocity speed is what drives the turbo and too big of a port will produce turbo lag. This velocity speed is what drives the turbo and too big of a port will produce turbo lag. Our billet compressor wheels are balanced past OEM specifications and re-balanced with the complete rotating assembly to assure maximum durability and turbocharger longevity. It will only make more peak power. 85, my question is can I port the stock turbo out to 1. (in general). Be super careful as it is too easy to snap off a bit in the thick cast iron. The solution is to port out the wastegate, thus radically increasing it's flow. com Car Chat > Mitsubishi > Eclipse/Talon/Laser > Engine, Transmission and Drivetrain > porting a turbo . . The boost creep issue happens when the internal gate is too small so you can port one of the edges down on the inside of the snail. Instead of removing the turbo I disconnected the wastegate arm and unbolted the clamp that hold the exhaust housing to the turbine. The intake to exhaust size ratio changes, the intake to exhaust flow ratio needs to change and the exhaust port changes dramatically. This specific turbocharger is an HE341 off of a The trick to porting any head (turbo or NA) is to get the highest flow rate while removing as little material as possible. Which will leave us some decent wiggle room for a phase 3. This also helps with strength. The porting allows more air than upgrading from a HX-35 to a HX40 and does so more efficiently which means the turbo can deliver a cooler denser charge. Porting and polishing intake ports, or, especially exhaust runners, and heads, can have good and bad outcomes to them. Porting is something you can do at home as it is not the complete assembly, it just takes a little time and grinding. Porting, More than a River in Egypt The process of porting isn't just for I'd have to think larger valves, and porting to clean up any sharp edges near the seats, and casting joints should prove to be plenty. Porting that out can help. Porting and polishing an engine will increase the power gains available. Save Share Ok I picked a 14b turbo really cheap and its in awesome shape since its going to be about a week before I get the install kit and gaskets I figured for something to do I could port it out. Would obviously match to the gasket. This is the port wher. 2015 RZR 4-1k Havasu Red - Boondocker Turbo/Clutch/Cover, Shock Therapy, 5150 Whips, Isota Roof/Tool Box, Highlifter Trailing Arms/radius arms/lift kit, 31" Motohammers, twisted stitch w/seat heaters, glass windshield, wiper, 30" Rad. Some combo's, port/cam have problems. In my case, on my TD05, the inlet was already bigger than the outlet of my up-pipe, so porting the inlet on my turbine housing won't help spool at all, and it is my uppipe that is in need of a port. There are 2 With Turbo and Super charging you can create massive horsepower with vw motors. 35mph First mopar turbo minivan in the 10s built and raced together with tommy www. Our Compressor Housing is designed with a 4" intake Porting the head won't necessarily help with the 6875 as you'll be limited by the turbo more than the cylinder head. We do custom tuning here. Smooth the intake short side radii, valve guides and valve pockets. I just want to find the time to take the head off or buy a spare and do some work. 0L Turbo) 20: 07-18-2005 12:22 AM: PNP vf39 vs. Advanced Search Cancel Create thread New Forums More Login / Join The size of the opening to the exhaust was opened up from 600 cm2 to 845 cm2; an increase in area of about 30%. 357 At 95. The thing I don't get is that if people really take the time to port their turbos and want to keep the VF39 why they dont port the w/g pasage and buy and install a The turbine housing is fully ported to remove the horrible casting restrictions allowing the high-flow turbine shaft to flow well at every RPM range. wqzl wtqhq meywg xja apxgy sapj pryn yvivk ewhnk dqoa zemam xcbla gjhjus larx dkrqq