oem injectors enough for a vf35?
Hi everyone
Im enquiring for a friend of mine who is getting a vf35 for a classic sti v4. Would an adjustable fuel reg and standard 440cc injectors be enough for a vf35 with supporting mods?? he is going to run 1.6 bar is that boost okay or whats the max boost they can take? Thanks Mark |
Yeah the 440's should be fine but would defo need the fuel regulator changing just don't buy a cheap Ebay special as they seem to have a lot of SARD fakes about
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What power are you aiming for, as you will max the 440s @ about 340bhp even with an adjustable FPR.
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He is hoping to get 340-350bhp, he has 740cc injectors thats are not fitted but they are too high cc for around 350bhp?
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Originally Posted by banny sti
(Post 9733139)
What power are you aiming for, as you will max the 440s @ about 340bhp even with an adjustable FPR.
tosh,,, lol :p all joking aside im running 340bhp on 440's, standard FPR and have plenty of head room on them :thumb: o p.s. standrd uk turbo 2.0 engine |
Would stick with the 440s and get what you can out of them :)
Maxxed my 440s when I had the vf23 on the car and was at most running 330bhp |
What turbo do you have and what boost is it at, Tidgy?
Thanks for the reply Banny |
oops thought i put that, my bad, vf34, hang on i'll dig out graphs (why did i put that in a post im still writing?), pretty sure its not as high as 1.6 though. indeed about 1.4 by the eye
http://i14.photobucket.com/albums/a3...ods/wheels.jpg http://i14.photobucket.com/albums/a3...o mods/fly.jpg |
Originally Posted by Tidgy
(Post 9733171)
oops thought i put that, my bad, vf34, hang on i'll dig out graphs (why did i put that in a post im still writing?), pretty sure its not as high as 1.6 though. indeed about 1.4 by the eye
http://i14.photobucket.com/albums/a3...ods/wheels.jpg http://i14.photobucket.com/albums/a3...o mods/fly.jpg Mark |
As said, keep your 440s... but add a decent adj. FPR (Fuelab all the way!) prior to mapping.
That way the base pressure can be upped a tad if needed, and you should get to the 340bhp odd (assuming everything else is okay etc,) |
Just one question for my own setup, would 550cc injectors and adjustable fuel reg be enough for a td05-18g hybrid?
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Easy.
550s with an adj FPR should be good for a min of 390bhp. 18g is good for 340-380; with 350-360 being a typical figure... |
I made 326hp on my VF23 with 440's & it still had 25% headroom.
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Thanks for the replys
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whats the max boost the standard dump valve can take? Can it handle 1.6-1.7 bar? I hope to keep the original one, car is a version 4 sti.
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Theoretically, any boost level, as it's in equilibrium when on boost (it's why it remains closed).
It's mainly its construction that could be a problem e.g.the fact that it's plastic, etc. But, also, its physical size could be a problem - dependent on power level and therefore volume of air being forced through it when it opens, etc. But were talking high really high power here... |
Would it be best to get a forge recirc one?
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I would, personally.
All metal, decent diaphragm/springs etc. You won't leave anything to chance with one of those... ;) |
Thanks Joz
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A VERY knowledgeable chap up here was running 390bhp on an AF 20G on 440's....they are plenty for a VF35....
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440s should be just about enough for a VF35 (although I had 550s): 35s usually max out at around 340ish bhp, this can be achieved at 1.4 bar (well it was on my UK MY99).
They will take running without a DV, but wouldn't suggest doing that on a car running a maf based ECU. |
im using vf35 with 550cc and not at 100% but other things like airflow sensor started to max out and i got just under 330 im sure that 440s wud of done the same but been running flat out at 100% on a uk 2ltr turbo
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