VW 8v engine question

Can't rev as high.

Thanks Conor - I don't expect you to have hard figures to hand but I'm thinking this is a feature of hydraulic tappets versus solid ones

The question really should've been in two parts...

1. The camshaft in question is specified for a solid tappets engine - if fitted with hydraulic tappets is this likely to cause mechanical fouling anywhere?

1. If no fouling, then will the camshaft still yield a power improvement, or is it likely to be substantially reduced if using hydraulic tappets?

My fuzzy-headed best guess is that the cam may be designed to exploit high end rev potential that would be unreachable with hydraulic tappets - though still show the same improvement to that point. It's described as fast road (ie. mild improvement) with I think a duration of 270deg.

Also: VW apparently changed the cam profile from 1988 on (Mk2 Scirocco 1.8 GT2) by which point all of the cars had hydraulic tappets. Anyone know why they changed the profile, and to what extent?

-- Ken Davidson DocDelete

This from TSR...

"Hi Ken, if it's a 102 it will only fit a solid head, hydraulic and solid cams are not interchangeable. The hydraulic cam from a '85 on Gti would fit and gain you a few bhp."

-- Ken Davidson DocDelete