New cam for GU engine

[skattrd]

I’ve aquired a spare cam from a mk1 GTi (DX engine) and was wondering if it would be suitable to put in the Jetta (1.8 GU engine with weber 32/34).

It was given to me with some other stuff and the guy reckoned it would be a good upgrade for the standard one fitted to the Jetta but I’m unsure as to wether it would be worthwhile fitting with the standard gearing.

Any thoughts?
Chris

[Chris S]

The DX motor has solid cam followers while the GU has hydraulic ones, and most tuning companies have different cams listed for the two motors,

see here http://techtonicstuning.com/showcategories.asp?catid=29

and here http://techtonicstuning.com/camsspecs.asp

My friend Edwin also says that the DX cam wont be any good on a hydraulic cam follower motor,

Edwin at his office

And playing in Syncro number 815

[no such user]

They fit and work but are very bad idea for a daily driver, solid lifter cam’s generally have more agressive lift ramps and hold the valve open for longer than the hydro equivalent but the lobe tip on a hydro cam is ground to turn the tappet in it’s bore but this is not so with a solid lifter cam, so it will trash the tappets relativly quick.

but if your racing in a class where you have to use standard engines and parts it’s a usefull trick to gain a bit more.

the camshaft from a PB enigne ( post 86 gti hydro tappets ) will drop in with no problems and give a small gain

[skattrd]

Thanks for the replies guys, it looks like none of the left over bits from my rocco will fit the Jetta; ah well I’ll keep my eyes open for a cheap PB cam then.

[no such user]

i’ve got an AGG camshaft here, it’ll fit but you would have to check how it compares to

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