VW Golf 1.8t 4motion - 500bhp
Discussion
This project began from humble roots and quickly became attached to me. I've now owned the car a few years and during my ownership things broke - as one might expect - but it's as good an excuse as any to justify upgrading bits.
Suffice to say I never had a clear plan for this project, which consequently meant my R&D was very much a case of pushing things until something broke, then upgrading it. The car is a 4motion variant which is attached to a 1.8t; it was last dyno'd in 2015 where it made 500bhp with 27 pounds of boost (gt3071r .63) with water/methanol injection. Anyway I thought I'd share some pictures of the Golf:
Suffice to say I never had a clear plan for this project, which consequently meant my R&D was very much a case of pushing things until something broke, then upgrading it. The car is a 4motion variant which is attached to a 1.8t; it was last dyno'd in 2015 where it made 500bhp with 27 pounds of boost (gt3071r .63) with water/methanol injection. Anyway I thought I'd share some pictures of the Golf:
Yea it does surprise quite a lot of cars/bikes, but as its been my daily driver for the past few years I've very quickly got used to it - to the point where I can't feel it boost anymore.
All the welding (intake, charge pipes and exhaust was made to the same standard by Solid fabrication)
The engine has been reliable throughout, that is despite all the standard components used (Pistons, valvetrain, valves, crankshaft). I've installed Integrated engineering connecting rods, Integrated engineering camshafts and ARP fasteners. Then it's just the usual bolt on mods and the big turbo. The turbo setup is a Garrett gt3071r (56 trim) supplied from Owen Developments with the metal bearing cage upgrade, Tial .63 v-band turbine housing and a t04e compressor housing with 4" inlet. The turbo manifold is supplied by TSR (made by Nortech), the wastegate is a Tial Mv-r 44 and the whole exhaust system was custom made by Solid fabrications. The car is mapped by Badger5 racing and the power is transferred through a custom sintered twin plate clutch setup, billet clutch basket and billet 3kg steel flywheel - courtesy of a good friend.
I've currently got Bilstein b16 pss9 coilovers, Compbrake solid top mounts, USRT tubular wishbones, 034 Motorsport solid subframe bushings, solid steering rack bushings, S3 steering rack and all the usual goodies. The brake calipers are 6 piston calipers taken from the front of a Porsche Cayenne. I wasn't keen on slamming the car, as its my daily drive I expect it to be useable amongst other reasons.
All the welding (intake, charge pipes and exhaust was made to the same standard by Solid fabrication)
The engine has been reliable throughout, that is despite all the standard components used (Pistons, valvetrain, valves, crankshaft). I've installed Integrated engineering connecting rods, Integrated engineering camshafts and ARP fasteners. Then it's just the usual bolt on mods and the big turbo. The turbo setup is a Garrett gt3071r (56 trim) supplied from Owen Developments with the metal bearing cage upgrade, Tial .63 v-band turbine housing and a t04e compressor housing with 4" inlet. The turbo manifold is supplied by TSR (made by Nortech), the wastegate is a Tial Mv-r 44 and the whole exhaust system was custom made by Solid fabrications. The car is mapped by Badger5 racing and the power is transferred through a custom sintered twin plate clutch setup, billet clutch basket and billet 3kg steel flywheel - courtesy of a good friend.
I've currently got Bilstein b16 pss9 coilovers, Compbrake solid top mounts, USRT tubular wishbones, 034 Motorsport solid subframe bushings, solid steering rack bushings, S3 steering rack and all the usual goodies. The brake calipers are 6 piston calipers taken from the front of a Porsche Cayenne. I wasn't keen on slamming the car, as its my daily drive I expect it to be useable amongst other reasons.
Edited by Melm0th on Wednesday 29th June 12:09
That's right, gtx range uses a billet compressor wheel and holds the promise of a larger powerband than the equivalent gt series.
I've not had to modify the haldex in any way and it appears to be coping really well with no sign of letting up.
There's very little lag; it makes 225bhp by 4500rpm and 420bhp by 6000rpm. I use the car on a daily basis; for commuting to/from work and food shopping and it feels fine.
I've not had to modify the haldex in any way and it appears to be coping really well with no sign of letting up.
There's very little lag; it makes 225bhp by 4500rpm and 420bhp by 6000rpm. I use the car on a daily basis; for commuting to/from work and food shopping and it feels fine.
Caddyshack said:
I expect the 4 mo subframes would just bolt in, I may be wrong but the shell is prob not very different so you could easily get the mounting points for the subframes in there.
The chassis is very different from the rear seat backwards and so the rear subframe/beam are not interchangeable, the 4motion variant has independent rear suspension, while the front wheel drive variant sports a solid rear beam, they have different fuel tanks as well, so a conversion of a fwd variant to 4wd (haldex) will involve quite a lot of cutting and welding.That was why I opted to start with a 4motion chassis and swap the 1.8t over - far easier and quicker.
I opted for the street cams, as it offered the promise of close to OEM idle and it offers the best powerband for my setup.
While the latter is true, the same could not be said about the idle quality; it sounds rather lumpy - so much so it initially triggered misfire detection on the standard ecu.
While the latter is true, the same could not be said about the idle quality; it sounds rather lumpy - so much so it initially triggered misfire detection on the standard ecu.
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