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| Vf28/vf35 Differences? | |
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| Tweet Topic Started: Jul 10 2008, 10:53 AM (379 Views) | |
| LJ | Jul 10 2008, 10:53 AM Post #1 |
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going to start mods on my other scoob and have come accross a VF35 for sale, just wanted to know what power these are good for etc compared to the VF28 which i was originally going for. :rolleyes: |
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| impreza94 | Jul 10 2008, 12:24 PM Post #2 |
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Rick GTR
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Here you go buddy all the info on the vf turbo's, hope it helps VF22 This turbo has the highest output potential of all of the IHI VF series turbos and is the best choice for those who are looking for loads of top end power. The top end power however, does not come without a cost. The VF22 spools significantly slower than the rest of the IHI models due to the larger P20 exhaust housing and is much less suited for daily driving than some of the other models. Although the largest VF series turbo, the VF22 is not quite optimal for stroked engines or those who wish to run more than 20PSI of boost. VF23 This turbo is considered a great all-around turbo. Like the VF22 it utilizes the largest P20 exhaust housing. This housing is mated with a smaller compressor housing of the of the VF24. This turbo is considered optimal in applications with range from mild to slightly wild. It does not have the same top end power of the VF22, but spools up significantly quicker. VF24 This turbo shares its compressor housing with the VF23 however, this housing is mated with a smaller (P18) exhaust side. The smaller characteristics of this turbo allow it to provide ample bottom end power and quick spool. This turbo is very popular for Imprezas with automatic transmissions and Group N rally cars. VF28 This turbo came standard on the STi Version 5. In terms of overall size, it is smaller than the VF22, VF30 and VF34, and about same size as the VF23. VF29 This Turbo is nearly identical to the VF24, with the same compressor and exhaust housings. However the compressor wheel in the VF29 is has been changed slightly. The changes made to the compressor wheel in this model are generally viewed as improvements, and as such this unit is typically chosen over the VF24. VF30 The VF30 is commonly considered the best bang for the buck turbo in the IHI VF series line. A relatively new model the VF30 features the same exhaust housing as the VF24 but a larger compressor side similar to the VF22. The combination of these two parts results in increased output potential without the lag associated with the VF22. Although it doesn't offer the top end supremacy of the VF22, the VF30 is a great compromise between these unit and the quicker spooling models. VF34 The VF34 is nearly identical to the VF30, with the same exhaust housing and compressor. However the VF34 goes back to the ball bearing design, and in doing so achieves full boost approximately 500RPM sooner than the comparable VF30. The VF34 is the most recent IHI design and as such costs slightly more than its counterpart. Top end performance and maximum output are identical to the 30. VF35 The VF35 has identical internals as the VF30 and it uses divided thrust bearings. However, the exhaust housing is a P15 which means this turbo will have fantastic spool characteristics. This turbo is standard on the new WRX Type RA. LIMITED SUPPLY. VF36 Roller bearing version of the twin scroll VF37, also has a titanium turbine and shaft for even quicker spool. Same compressor housing as VF30/34, however twin scroll P25 exhaust housing provides slightly better top end output due to reduced exhaust pulse interference. This turbo is good for 400HP and used on JDM STI Spec C from 2003 onwards. VF37 (thrust bearing) Enter the age of twin scroll IHI turbos. Same compressor housing as VF30/34, however has a new twin scroll P25 exhaust housing that provides slightly better top end output due to reduced exhaust pulse interference. Twin scroll also provides better spool up for improved low down response over the VF30/34. This turbo is good for 400HP and used on JDM STI from 2003 onwards. VF38 Twin scroll turbo with titanium turbine and shaft. Smaller compressor housing than VF36/VF37 provides tremendous spool up capabilities but less top end than VF36/37. The spool capabilities of this turbo are demonstrated on the JDM Legacy GT, which reaches peak torque at 2400RPM. VF39 Single scroll turbo used on USDM STI and latest 2.5L STIs released internationally. Smaller than VF30/VF34. VF42 Exclusive turbo to the S203/S204 models, this features a twin scroll design with a slightly larger compressor than the VF36/37 turbos and different turbine design (more blades). The VF42 is a roller-bearing turbo and is likely of similar size to the VF22 turbo, but with twin scroll exhaust housing for faster spool and superior top end performance due to reduced exhaust pulse interference. PE 1818 The 1818 supposedly comes on boost extremely fast...which make it great for road racing or aggressive driving (remember to be responsible :^). The 1818 maxes out somewhere between 350-375 hp. PE 1820 The 1820 is larger than the 1818 and is capable of running more boost, but at the expense of more turbo lag. Expect it not attain full boost until you have passed 4000 rpm. However, it can be tuned to 400+ hp. IHI & Garret Turbo Specs Model Type Compressor Inlet Diameter Compressor Housing Nominal Turbine Housing Turbine Approx A/R Compressor Wheel Blades Turbine Wheel Blades Waste Gate Actuator Turbine Casting ID & Batch VF22 Roller Bearing 48.5 A 9.4 PZ20-H 94001 0.71 5 11 C395 H, H4 VF 23 Roller Bearing 46.7 B 9.4 PZ20-H 94001 0.71 6 11 C395 8psi TBA VF 24 Roller Bearing 46.7 B 9.4 PZ18-H 94001 0.63 6 11 C418 8psi H, S4, 66 VF 30 Bronze Bearing 47.9 C 9.4 PZ18-H 94001 0.63 6 11 C484 H, S4, IC F55 VF 34 Roller Bearing Garrett 400 Ball Bearing 53 - - Outlet Dia 51.5 - 7 9 11 psi Garrett 450-500 Ball Bearing 53 Outlet Dia 46.9 - 7 10 14 psi Turbo Type ----------- Approx flow @ pressure Stock Turbo ---------- 360 CFM at 14.7 PSI IHI VF 25 ------------- 370 CFM at 14.7 PSI IHI VF 26 ------------- 390 CFM at 14.7 PSI T3 60 trim ----------- 400 CFM at 14.7 PSI IHI VF 27 ------------- 400 CFM at 14.7 PSI IHI VF 24/28/29 ----- 410 CFM at 14.7 PSI ========= 422 CFM max flow for a 2 Liter at .85 VE pressure ratio 2.0 (14.7 PSI) 7000 RPM ======= IHI VF 23 ------------- 423 CFM at 14.7 PSI FP STOCK HYBRID -- 430 CFM at 14.7 PSI IHI VF-30 ------------- 435 CFM at 14.7 PSI SR 30 ----------------- 435 CFM at 14.7 PSI IHI VF-22 ------------ 440 CFM at 14.7 PSI T04E 40 trim -------- 460 CFM at 14.7 PSI ========= 464 CFM max flow for a 2.2 Liter at .85 VE pressure ratio 2.0 (14.7 PSI) 7000 rpm ======= PE1818 -------------- 490 CFM at 14.7 PSI Small 16G ------------ 505 CFM at 14.7 PSI ION Spec (stg 0) --- 525 CFM at 14.7 PSI ========= 526 CFM max flow for a 2.5 Liter at .85 VE pressure ratio 2.0 (14.7 PSI) 7000 RPM ======= Large 16G ----------- 550 CFM at 14.7 PSI SR 40 ----------------- 595 CFM at 14.7 PSI 18G ------------------- 600 CFM at 14.7 PSI PE 1820 -------------- 630 CFM at 14.7 PSI 20G ------------------ 650 CFM at 14.7 PSI SR 50 ---------------- 710 CFM at 14.7 PSI GT-30 ---------------- 725 CFM at 14.7 PSI 60-1 ----------------- 725 CFM at 14.7 PSI GT-35R -------------- 820 CFM at 14.7 PSI T72 ------------------ 920 CFM at 14.7 PSI <--- Note you would have to spin a 2.0 L engine at about 14,000 rpm to flow this much air. IHI VF 25 ----------- 395 CFM at 18 PSI IHI VF 26 ----------- 400 CFM at 18 PSI T3 60 trim ---------- 410 CFM at 20 PSI IHI VF 27 ----------- 420 CFM at 18 PSI IHI VF 24/28/29 -- 425 CFM at 18 PSI IHI VF 23 ----------- 430 CFM at 18 PSI IHI VF-30 ----------- 460 CFM at 18.0 PSI AVO 320HP -------- 465 CFM at 17.5 PSI T04E 40 trim ------ 465 CFM at 22 PSI FP STOCK HYBRID- 490 CFM at 18.0 PSI IHI VF-22 ---------- 490 CFM at 18.0 PSI SR 30 --------------- 490 CFM at 22 PSI Small 16G ---------- 490 CFM at 22 PSI ION Spec (stg 0) - 500 CFM at 19 PSI PE1818 ------------ 515 CFM at 22 PSI Large 16G --------- 520 CFM at 22 PSI ========= 526 CFM max flow for a 2 Liter at .85 VE pressure ratio 2.5 (22 PSI) 7000 rpm ======= ========= 578 CFM max flow for a 2.2 Liter at .85 VE pressure ratio 2.5 (22 PSI) 7000 rpm ======= HKS GT2835 ------- 580 CFM at 22 PSI 400 hp MRT 400 ------------ 580 CFM at 16 PSI AVO 400HP -------- 580 CFM at 17.5 PSI MRT 450 ------------ 650 CFM at 19 PSI AVO 450HP -------- 650 CFM at 20.0 PSI SR 40 ---------------- 650 CFM at 22 PSI ========= 658 CFM max flow for a 2.5 Liter at .85 VE pressure ratio 2.5 (22 PSI) 7000 rpm ======= HKS GT3037 ------ 670 CFM at 22 PSI 460 hp PE 1820 ----------- 680 CFM at 22 PSI 20G ---------------- 695 CFM at 20.0 PSI HKS GT3040 ----- 710 CFM at 22 PSI 490 hp AVO 500HP ------ 770 CFM at 22 PSI SR 50 ------------- 770 CFM at 22 PSI GT-30 ------------- 790 CFM at 22 PSI 60-1 --------------- 800 CFM at 22 PSI HKS GT3240 ----- 830 CFM at 22 PSI 570 hp GT-35R ----------- 880 CFM at 22 PSI T72 --------------- 1000 CFM at 22 PSI <--- note you would have to run a 2.0 L engine at >40 PSI boost to flow this much air Conversions used where there was control over conversion factors: 1 HP approx equals 1.45 CFM 1 CFM approx equals 0.0745 lb of air/min 0.108 Lb/min approx equals 1 hp 1 Meter cubed/sec = 35.314 CFS = 2118.867 CFM 1 KG/sec = 132 lbs/min approx equals 1771.812 CFM power coversions: 1 PS = 0.9859 HP = 75 Kgf m/sec 1.3405 HP = 1 KW 1 HP = 746 watts |
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| RA Jay | Jul 10 2008, 04:42 PM Post #3 |
4 Have Gone But Never Forgotten.
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If your car has a TD05 16G then i wouldnt bother changing it for either, the 16G can run upto 350bhp with similar torque with supporting mods....but your gearbox will probably give up a long way before that. |
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1995 WRX - 318bhp/300ftlb - SOLD - 2005 2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007 1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008 1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009 1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009 | |
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| LJ | Jul 10 2008, 05:03 PM Post #4 |
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no me other one has td04 hence the upgrade! have come accross a VF34 (IHI), will that fit my car? (MY00) |
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| RA Jay | Jul 10 2008, 05:09 PM Post #5 |
4 Have Gone But Never Forgotten.
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I didnt read the post right didnt realise you were talking about the other one.... Id go for the VF35, but your also need bigger injectors to fuel it, if your feeling really flush you could also fit an STI version 7/8 intercooler. There was a VF35 on scoobynet yesterday for £175 which is bloody cheap they usually go for 250-300 |
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1995 WRX - 318bhp/300ftlb - SOLD - 2005 2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007 1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008 1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009 1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009 | |
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| LJ | Jul 10 2008, 05:14 PM Post #6 |
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Unregistered
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already got 440 injectors on the way do you know if that turbo is still for sale or got a link?
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| RA Jay | Jul 10 2008, 05:30 PM Post #7 |
4 Have Gone But Never Forgotten.
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Its been sold. |
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1995 WRX - 318bhp/300ftlb - SOLD - 2005 2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007 1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008 1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009 1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009 | |
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| LJ | Jul 10 2008, 05:50 PM Post #8 |
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blast! found this one for £300 though :rolleyes: clicky |
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| LegacyTurbo | Jul 10 2008, 05:53 PM Post #9 |
y0
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if you've found a vf34 buy that, they are one of the best turbos out there imo for the power us boys are usually aiming for. if not buy a cheapo td05 and get it converted to front entry, cheap as chips
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[GK-customfield]Lewis[customfield-GK] Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD ![]() EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost) | |
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| LJ | Jul 10 2008, 05:59 PM Post #10 |
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yea found a vf34 thats done 6000 miles for £350 :rolleyes: |
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| RA Jay | Jul 10 2008, 06:23 PM Post #11 |
4 Have Gone But Never Forgotten.
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Im sure the turbo info above is wrong....it was the VF34 that came on the spec c ( V7) and not the VF35..... As Lewis says the 34 is a better turbo being roller bearing, it will have more puff at the top end but wont spool quite as quickly. |
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1995 WRX - 318bhp/300ftlb - SOLD - 2005 2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007 1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008 1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009 1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009 | |
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| LJ | Jul 10 2008, 06:25 PM Post #12 |
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ok, how does the vf28 compare to the 34 as been offered a 28 now aswell :lol: |
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| RA Jay | Jul 10 2008, 06:34 PM Post #13 |
4 Have Gone But Never Forgotten.
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A quick spooling turbo used on the V5 sti...power wise 320-340ish |
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1995 WRX - 318bhp/300ftlb - SOLD - 2005 2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007 1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008 1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009 1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009 | |
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| LJ | Jul 10 2008, 06:37 PM Post #14 |
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final question :lol: what would ya go for vf28 or vf34? |
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| RA Jay | Jul 10 2008, 06:57 PM Post #15 |
4 Have Gone But Never Forgotten.
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VF34 its a newer and better turbo |
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1995 WRX - 318bhp/300ftlb - SOLD - 2005 2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007 1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008 1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009 1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009 | |
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| LegacyTurbo | Jul 10 2008, 07:04 PM Post #16 |
y0
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yeah, but converting a td05 is the cheapest option
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[GK-customfield]Lewis[customfield-GK] Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD ![]() EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost) | |
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| RA Jay | Jul 10 2008, 07:09 PM Post #17 |
4 Have Gone But Never Forgotten.
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This is Luke, Lewis....he's loaded so cheaper doesnt come into it........well he must be loaded modding 2 scoobs.... :lol: |
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1995 WRX - 318bhp/300ftlb - SOLD - 2005 2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007 1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008 1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009 1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009 | |
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| RA Jay | Jul 10 2008, 07:12 PM Post #18 |
4 Have Gone But Never Forgotten.
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To perfectly honest with you Luke.....with what you have spent and intending to spend on 2 scoobs you could of bought an STI...forged engine,stronger box,turbo,brakes,intercooler the BETTER list is endless.. But each to their own i suppose.....you ask any scooby owner...."mod my wrx or buy an sti" 10 out of 10 will say buy an sti. |
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1995 WRX - 318bhp/300ftlb - SOLD - 2005 2001 WRX Bugeye - 235bhp/230ftlb - SOLD - 2007 1996 WRX Type RA - 282bhp/285ftlb - SOLD - 2008 1997 STI Type RA - 350bhp/320ftlb - SOLD - 2009 1991 Nissan Pulsar GTiR - 286bhp/280ftlb - SOLD - 2009 | |
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| LJ | Jul 10 2008, 07:14 PM Post #19 |
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trust me i would but i would get ass raped by insurance companies!!!!!!!!!!!!!!!!!!! you forget how much i already pay! :lol: im glad it halves when i renew it in october :rolleyes:
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| LegacyTurbo | Jul 10 2008, 07:14 PM Post #20 |
y0
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lol, yeah why have you got two?? |
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[GK-customfield]Lewis[customfield-GK] Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD ![]() EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost) | |
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| LJ | Jul 10 2008, 07:15 PM Post #21 |
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:lol: i prefer to buy new or the 'actual' thing so i wouldnt go down the route of turning a td05 into one, it just wouldnt satisfy me, im strange like that :lol: |
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| LJ | Jul 10 2008, 07:17 PM Post #22 |
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well im turning the new one into more of a track day car but my main reason was that i cant be modding the car i use for work everyday so bought two :ph43r: :lol: plus i prefer the look of the facelift, looks more aggresive IMO :ph43r: |
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| LegacyTurbo | Jul 10 2008, 07:19 PM Post #23 |
y0
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cool hopefully the leggy will see the track one day!!!
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[GK-customfield]Lewis[customfield-GK] Starlet GT 1.3 forged engine, tdo4 turbo @ 1.25bar = 252bhp = SOLD ![]() EDIT: Charade GTxx 993cc three cylinder turbo, 173bhp @ 1.4bar (should hit 200bhp with a larger throttle body, removing stupid high lift cams and a bit more boost) | |
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| agent003 | Jul 11 2008, 12:48 AM Post #24 |
Doesn't have a home to go to!
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:lol: I think Luke is just a greedy bugger
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| LJ | Jul 11 2008, 07:51 AM Post #25 |
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do you know if that turbo is still for sale or got a link? 

8:14 PM Jul 11