GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: deanpompey on 10 June 2009, 16:25
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hey guys, my big plans for the mk2's new lump have been put on hold for few months at least so gonna chuck few bits i have lying around on until i can do the engine conv.
Am just wondering what kind of power figures i can expect from my 1.8 driver lump with the following mods:
Weber carb
k&n filter
GTI head
GTI cam
GTI exhaust manifold and downpipe
Full Stainless exhaust
bosch super 4 plugs
KN 10mm quad core leads
a rough idea anyone please?
cheers
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From that spec I would expect to see around the 105 - 110bhp mark as that's pretty much GTI spec but with a carb not injection.
You'll get the best out of it by having the carb set up on a rolling road.
Nick
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good good, that'll do for a few months :cool:
cheers
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I reckon about 110-115, depending on the engine health I guess and as Horney said, how well the carb is set up.
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well the engine had a full rebuild about 2k ago, and the donor head was rebuilt about 5k ago, so should be no problems there!
and will be set up properly on r/r so fingers crossed!
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Lol, the leads and plugs will get you nothing unless your existing ones are knackered, the rest, IF PROPERLY set up on a rolling road (££££) may get you some extra but Id dissagree with a genuine 110-115 at the flywheel.
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My thinking was an 8v gti is 112 standard, but on top of the standard gti engine he's got a well set up carb (not sure if this is better or worse than injection in terms of power?), he' got the k&n and the stainless system on his side.
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well..... iv seen r/r printouts of 10bhp gain just from a well set up weber and stainless, so 20/25bhp gain with a better cam, k&n filter, better flowing head and better flowing exhaust manifold seems reasonable to me?
i may be wrong, but around gti power was what i was expecting,is no major drama if not, so long as i notice the difference! lol
oh, and not that it'll add any power as such but will be fitting a shaved hedgehog too, so hopefully get better throttle response too
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he rest, IF PROPERLY set up on a rolling road (££££) may get you some extra but Id dissagree with a genuine 110-115 at the flywheel.
Having fitted a good GTI head to a GU, with a Weber and then only tuned it in and driven it back to back with GTIs and had other people drive it and compared it to GTIs I don't think the power figures are unreasonable, provided the motor is in good health.
GU does = ~90bhp so you're not asking much to take it to 110bhp, with a bigger set of valves and free-er breathing manifolds.
Don't forget to trim the inlet manifold heater down to about 1cm of 'spikes' - by my reckoning that makes an appreciable difference, too.
But then what do I know, I'm just some internet hero? :huh:
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lol
thats what i meant by fitting a shaved hedgehog mate, that is the manifold preheater.
glad the majority think gti power is reasonable, am gutted iv had to put my engine conv on hold, but had a few finanacial probs pop up at the last minute, wont take me long to clear em, but gonna do what i can in the meantime as have my sights firmly set on a bit more power!
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a 1.8 motor with PB head ,carb inlet with pre heater and k jet dizzy will make 110 ish bhp a 1600 will make near as dammit the same max bhp torque differs tho. loose the spikes and it vastly inproves airflow though the manifold people have seen upto 125 bhp whitch is pritty much what a keen gti makes
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sweet. that should keep me entertained for all of about 10 mins then, until i want more power lol