alpines
[Top] [All Lists]

Valve trouble?

To: alpines@autox.team.net
Subject: Valve trouble?
From: Joe Robson <absjmr@bath.ac.uk>
Date: Tue, 17 Apr 2001 19:50:29 +0100 (BST)
Hi all,

My Alpine SIV is gradually being sorted out, last year was a new Holbay
bottom end which is still being run in, the latest expense was to have the
twin 40s balanced and properly jetted on a rolling road. I picked it up
and the guy mentioned that the valve clearances on 2 and 3 cylinders
needed setting up properly, and the new 4 branch exhaust manifold needed
correctly facing up to the head, but the carbs were now properly jetted
and balanced. I drove it away and was happy with the increase in
driveablity and power, especially when the second chokes on the carbs
open up. However, gradually over the next 100 miles the car ran worst and
worst, getting hot, backfiring, using a HELL of a lot of fuel, down on
power, generally very rough. I thought I would try and get it the 150
miles south to my home in London as it wasn't too bad at the higher revs
and sort it from there.

After only about 10 miles the car got quite hot (100 degrees) and
spluttered to a stall at about 70 mph. I called the rescue service and
they came out to find that the distributor was loose and had span way out
- which explained a lot. The guy set it as well as he could on the
roadside, and we set off again, 5 miles later the same thing, he checked
the points - fine, plugs - fine, condenser - fine, but yet still it would
drive for a while then get hot, backfire and stall when given any incline.
Eventually I got towed and the car is now outside my home in London.

Could this be down to teh valves? burned out? or still a timing thing? (if
so what should the correct set up be if it is running a Holbay head with
twin 40 Webers?), anything else simple to check?

I need to get the head all sorted out before our British summer time
(about a week long) is all disappeared, could anyone recommend a
specialist garage to take it along to? Hopefully not too far away from
London.

Also I would like to convert to electronic ignition, thoughts?
recommendations? anything? anyone?

Thanks in advance

Joe

1964 Alpine
1969 Stiletto
1978 Davrian

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