Throttle Bodies

[Jarred]

yea, my head just exploded.

[twin eng, twin turbs]

Spyros is the man! reading all the posts he has in that thread is awesome. When i built the original atmo 1.9l 8v in Preens mk1 it had 42mm inlet 35mm exhaust valves, schrick 272 cam, porting and polishing, 10.5:1 compression, fully balanced, lightened flywheel, 1 5/8" 4 into 1 tuned lenght extractors 2 1/2" system and running on twin down draught 40mm webbers etc. The list goes on but my point is it was essentially totally worked for a nicely drivable street car but only made a maximum 170bhp. It is not easy to get big numbers from an atmo engine and keep it driveable or do it cheaply. I like webbers and ITB's but for out right power forced induction is the way, keep the revs down to below 8000rpm max and vw's respond very well to psi..

[Sharkie]

I used to run 2 engines on my Mk1. Both 1800 16v, the one with the turbo making close to 400bhp @fly (290kw) and a NA with 2x 45mm Weber SDs making 112kwatw (150bhp) or 130kwatf (175bhp). Enlarged (modified) throttle bodies in both cases.

You have to remember that this was at altitude (1800m above sea level) and included a loss of 18% (NA) and 11% (turbo) from sealevel figures.

The NA was a hoot to drive and used when the turbo motor was undergoing work...... we got swap over down to a couple of hours eventually as the turbo motor needed some work quite frequently.....

Watch the cam chain tensioner pully bolt as we snapped it twice (I still don't know how....) and had to redo the head once and replace it once.....

However notwithstanding a bit of lag down low, nothing touched it when it was on boost. Absolutely crazy and the most fun you can have with your pants on.....

[velly_16v_cab]

If you want honest 200+hp,reliable and driveable just put a 20v turbo in.No opening the engine to do mods,just wind up the wind and enjoy 280 hp at the fly with driveability that my even grandmother can enjoy.I've been down the highly tuned, bad mannered and short lived na's road years ago and while it's fun for a while, driveability is everything these days.

if your talking mk2 or 3 then a VR6 will give you 200bhp all day long

but yes, 20v T is the simple all rounder

[Valver.]

I agree with all that. The early oettinger engines were a 1.6 though. Well i'm pretty sure they were.

You're thinking of the 16s. Oettinger also provided aftermarket tuning packages for all 16vs Though, they were hugely expensive!

[Valver.]

but yes, 20v T is the simple all rounder

My washing machine sounds nicer than a 20v

[Preen59]

My washing machine sounds nicer than a 20v

hahahaha! Amen to that! Talk about done to death!

And the vr6 may give you 200 hp, but the engine weight makes the front of the car very lazy (I don't care what suspension you have, it won't point and hold on the nose like a mk2 or 3 with a 4 cyl in it). Sound good though.

[velly_16v_cab]

My washing machine sounds nicer than a 20v

i cant really argue with that

a 16v on full chat still gives me wood