Glenn Trunnell wrote:
> Hey everone,
>
> I think that I've got the annoying miss in my '79 narrowed down to a weak
> valve spring. I've done the test where you hold a dollar bill over the
> tail pipe and it snaps up against the pipe. I had a valve job done about
> 300 miles ago but unfortunately didn't replace the springs. The
> compression is good on all cylinders so I don't believe that I have a
> burned exhaust valve, I also tried increasing the clearance on the rockers
> with no benefit. I have been told that you can replace the springs without
> removing the head provided that you use an air compressor to keep the
> valves seated while you remove the keepers and springs. Is there a valve
> spring tool that will allow you to compress the springs while the head is
> on the block? Has anyone ever tried this? Any advice will be greatly
> appreciated.
>
> Thanks as always,
> Glenn
Glenn
I've heard of valve spring compressors that use the
intake manifold bolts as a fulcrum and do not require
the removal of the head but I think these were for
small block Chevys although I see no reason why you couldn't
fabricate something that would work on a four cylinder.Basically
it was just a lever to compress the spring. It's
probably 15 yrs since I heard of these tools but they might still be
available from a specialty tool supply i.e. Snap-On
Hope this helps
Chris Taylor
75 Spitfire
Burlington, Ontario
PS I will be in touch about the frame.
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