Re: [T3] engine/carb questions

[David Yaghoubian <goob@adelphia.net>]

At 05:48 PM 9/11/2005, you wrote:
> To even guess at your jetting
> needs, I expect we'll need to hear what size valves you're running and
> whether you've ported the heads and exhaust. I imagine you've switched to
> dual-port heads, right?

Dual-port, but I have no idea what size valves or anything about the
porting. I'll ask the engine builder tomorrow when I drop by to pick up a
few larger sets of main jets. He's got his own ideas about re-jetting (he
thinks best to try 160s next, then back down if too rich) but I wanted to
pose the question here as well (for obvious reasons! ;)

> => is 7.5 btdc the
> correct setting
> Maybe, but probably not. You'll have to determine the full advance of
> your particular distributor. Manufacturing tolerances on the 009 are
> quite loose. I'd recommend you buy or borrow a timing light with an
> advance adjustment, which will make this job easy as
> pie.

I've always wanted an advance timing light, so this was my excuse.
:)  The manual that came with it sucks, so I'm still unclear as to
the procedure if I don't have a sure reference point (of 7.5btdc, or
whatever) to begin with. Could somebody explain the procedure for setting
the advance at max 32? I assume you set the wheel on the light at 32, and
then get the engine up to the speed at which the advance is farthest
(around 3500rpm) but what line/mark am I looking to adjust to at that
point? TDC? 7.5? Sorry for the surely newbie question but I'm only
familiar with the cheaper non-advance lights.

Thanks!

Dave Y.
68 Square




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