b_kennedy

Hello. Can anyone tell me what is the actual difference between a vernier and a standard pulley and if they are worth upgrading. thanks

NUTS RuS

iTrader: (35)

A Vernier pulley wheel is effectivly an inner and outer wheel, which can be finely rotated and then locked up to give accurate timing .

Standard wheels can only ever get to the nearest tooth.

If you have specced cams that need a fine tune then a vernier will help acheive that result.

b_kennedy

i see. thanks fella. I got one just wandered if worth fitting.

NUTS RuS

iTrader: (35)

If everything is standard then you wont really get a lot of gain from it apart from it being lighter.

To help others here's mine on the 16v engine



The black bit in the centre is effectivly 1 wheel, and the blue bit the second. There are marks and pointers located on both to help you set the degrees.

b_kennedy

well its a zvh so must be a must lol

MJC

They are a very worth while mod chap especially on the CVH head and once modified can gain some good results

b_kennedy

wicked. I'll have a go then

RST Ski

il have it if u dont want it

swerv

as long as they are set up with all the right equipment then they are well worth it, got one on Mine running std head and cam .

Rick

cvh's are v sensitive to cam timing, and cams are never ground that accuratly, so if ur tuning an engine it's a must.

b_kennedy

Rick
Love the motor in the sig fella.

I think I gonna give it a go. Seems a good and most probably a sensible mod for power.

RST Ski
If I cant get it right you can take it off my hands fella