[Top] [All Lists]

Re: Timing Mark Question

To: Bill McLeod <>, "S. Allen" <>
Subject: Re: Timing Mark Question
From: James Harwood <>
Date: Sat, 23 Oct 2004 21:17:59 -0700 (PDT)
I would concur with that Bill. 11 o'clock viewed from
the front seems about right regardless of AM or PM.

Nearest the 12 o'clock is TDC, then each notch going
anti-clockwise is 5 deg before TDC. 

If you are using a timing light, you should ideally
disconnect (and plug) the vacuum advance line, then
set the timing to be about 12-15 deg BTDC at idle rpm.

A lot depends on the state of tune of your motor. You
may need a little more or a little less advance. Just
try to avoid the dreaded pinking under load.

'74 B

--- Bill McLeod <> wrote:

> Have you checked to see if the damper has moved
> internally (i.e. the 
> rubber ring has broken)?
> I would set the engine up at top dead center and see
> where the pointer 
> points....
> I believe that the timing marks on the later engine
> matched a notch on 
> the damper with a graded pointer sticking out from
> the timing chain 
> cover at about the 11:00 position looking at it from
> the front.  Not 
> sure whether it's AM or PM....
> Regards, Bill
> S. Allen wrote:
> >Hi,
> >
> >Quick question that I can't seem to get a straight
> answer to...
> >
> >I have a 74 1/2 BGT.  What mark on the engine
> should be used to time
> >it with the mark on the pulley and at what rpm?
> >
> >My current instuctions are obviously wrong as my
> car's now running hot
> >and the engine is lugging...
> >
> >Any help appreciated,
> >
> >Scott Allen
> >
> >74 1/2 BGT
> >52 TD

Check out the new British Cars Forum:

<Prev in Thread] Current Thread [Next in Thread>