no, real steel for example show a budget street roller set at £30.55 with 3 keyways on the crank sprocket and a billet street roller set roller set at £93.23 with 9 keyways. they're not 'true' roller sets but it's not a race car so they're both just fine and allow advancing/retarding the cam timing. also both cloyes sets so decent quality.I would disagree with that Neil , most aftermarket timing sets aren't adjustable unless you start spending silly money on them, nearly everything under £100 has no adjustment in it. As you say though the only way to know for sure is to pull the timing cover.
sounds like a lot of the simple stuff has been checked mate. still compression and vacuum to check first though. you can remove the timing cover with the sump in situ, but you'd need to replace the rubber timing cover to sump seal with silicon for reassembly just like when using silicon at the front and back of an inlet manifold instead of the rubber/cork gaskets. i've done this several times in the past and never had a leak.It's a chevy so the sump would have to come off to get the timing cover off - so quite a big job to check. I'd not bother and look at the simpler stuff first.
Thanks for the advice, I hope to have a pushrod and rocker arm to put the engine back together with soon. (someone has offered to send them to me, and I'm waiting to hear the postage costs)It's a chevy so the sump would have to come off to get the timing cover off - so quite a big job to check. I'd not bother and look at the simpler stuff first.
I didnt measure it with a rev gun (forgotten what it is called) we just did it by ear....Good news on the increase in power, you might still need to adjust the carburettor to get more power, which may mean you can get more advance without pinking. Do you know what the timing is now you have backed it off to avoid pinking?