Kent cam question

[Gaz1300SR]

I have a kent cam I want to get fitted on my 1.3SR, it's an ast2 cam.

My question is should I fit the cam with a vernier pulley or not bother? My local garage told me there is no point fitting the cam on it's own.

Is this true?

[Stuart]

9.5/10 times I've seen an AST2 fitted and fettled with on the dyno with a vernier it winds up on '0' which matches the OEM pulley.

You only 'NEED' an adjustable cam sprocket if you have solid lifters and a silly cam to get the timing dialled in just right.

[mowgli]

does your local garage supply kent cams & pulleys by any chance???

people managed fine for years before verniers started to be sold

[Gaz1300SR]

does your local garage supply kent cams & pulleys by any chance???

people managed fine for years before verniers started to be sold

Haha! To be fair they don't and I think he was giving advice on cams in general.

Thanks for the advice Stuart. I'll just get the cam slapped in then.

[Gaz1300SR]

What if I was fitting twin 40s, would that make a difference as to whether I would need/benefit for a vernier?

[mowgli]

not really.
has it had any head work done?

[garyc]

It may help if you have the block decked and 2mm off your head as you end up with retarded or advanced cam timing depending where you set the belt.

[Gaz1300SR]

No not had any head work done. Just want the cam and crabs on. Nothing else.

[Stuart]

Dans 1.6 8V ran std cam timing on a vernier.... ;)

[mowgli]

am i right in thinking that these cams are made from stock cam blanks anyway? so the basic timing is done from the factory reference points anyway.

verniers are useful when much more serious mods have been done, and i reckon on a twin cam setup, they will be much more use.

[Stuart]

correct, they are based on factory 110 or 116 deg timing....

[Gaz1300SR]

That's interesting, so why would they be better on a twin cam engine? Just wondering really.

[mowgli]

with a twin cam setup, you can alter the inlet/exhaust timing seperately.

by altering the overlap etc, you get a lot more leeway on your tuning, you can make more torque or more top end.

a classic example of this is the 306 gti-6.. it was built with one objective, to be a winning production saloon racer... now this class is really quite limited on mods... the inlet cam pulley had 2 timing positions, road & race.. by the simple job of retiming the inlet pulley, you could release about 25 more hp.

[Gaz1300SR]

That's impressive, 25hp without major work! Thanks for the info.