 Pulled the heads-pics, Back-up race engine needs work |
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| 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) 
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| groot |
Jun 29 2005, 10:40 AM
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#2
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Dis member Group: Members Posts: 896 Joined: 17-December 03 From: Michigan Member No.: 1,444 |
I just dropped the heads off with a local shop for a refresh. I'll take the cylinders in to him tomorrow to make sure we get a good fit and I'll run it without the top gaskets. The shop also suggested taking a little more out of the sealing groove to bump the compression a bit more, but we need to confirm that will work with these cylinders.
With these improvements, I'll have a bonified back-up engine for the monster Jake's building for me. Joe-the exhaust does look the same, but harder to see because of the carbon deposits. I don't have the history of who, what or when or how on this engine. I'm just happy that it has held together this long. I'll also order some rings once I confirm that I have 94mm cylinders. Thanks for the advice! |
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Posts in this topic
groot Pulled the heads-pics Jun 29 2005, 07:37 AM
groot Cyl #3 and #4 Jun 29 2005, 07:38 AM groot Cyl head #1 and #2 Jun 29 2005, 07:39 AM groot Cyl head #3 and #4 Jun 29 2005, 07:39 AM groot Any thoughts or insights gleened from the conditio... Jun 29 2005, 07:43 AM Brett W Toss the head gaskets. While your in there snatch... Jun 29 2005, 08:02 AM r_towle looks like your mixture is off on one cylinder....... Jun 29 2005, 08:04 AM groot Thanks for the help...
So, you're thinking I ... Jun 29 2005, 08:36 AM Brett W Rings are cheap. Get a set of Hastings rings the... Jun 29 2005, 08:44 AM Thorshammer Kevin,
Good pics.
Starting with the pistons, I ... Jun 29 2005, 09:00 AM Joe Ricard Wow this should win the best thread of the week aw... Jun 29 2005, 09:23 AM
Brett W Hastings list the number as 2C5599. You can run a... Jun 29 2005, 11:42 AM |
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