Pulled the heads-pics, Back-up race engine needs work |
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Pulled the heads-pics, Back-up race engine needs work |
groot |
Jun 29 2005, 07:37 AM
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#1
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Dis member Group: Members Posts: 896 Joined: 17-December 03 From: Michigan Member No.: 1,444 |
As some of you know, #1 and #2 cylinders of my back-up race engine are pretty low on compression (110 and 115 psi) compared to #3 and #4 (145 and 150 psi). I squirted a bit of oil in the cylinders and the compression only gained a few psi.
So, I have a little break in the racing and I decided to pull the heads and do whatever valve work is required. Here are some pics. Looks like the intake valves hit the pistons a little bit, maybe on a over-rev during a downshift. Cyl #1 and #2 Attached image(s) |
r_towle |
Jun 29 2005, 08:04 AM
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#2
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Custom Member Group: Members Posts: 24,591 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
looks like your mixture is off on one cylinder....
Darker brown intake valve.. Also to much blow by. Get some rings, hone them out and re seat the new rings...do it like jake does....he goes for at least a full hour at 2500 to break in everything. Rich |
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