 Valve collision problem |
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| thomasotten |
 Jun 30 2018, 08:03 PM
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#1
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Senior Member  Group: Members Posts: 1,572 Joined: 16-November 03 From: San Antonio, Texas Member No.: 1,349  |
I am having a bit of a problem with my latest 2 liter build. Basically, valves are colliding with pistons after warm up during break in. A valve got stuck and the pushrod actually fell off the rocker.
The heads were redon by RIMCO. After the problem happened, I pulled the heads, and there was clear indication of valve collision, and I had a valve stuck open. The head with a problem was sent back to RIMCO. Reinstalled. What happened this time is the engine start up from cold, runs fine. But then I can hear the taping of collision again. The taping is accompanied by a chirping sound that sounds like something is dragging. I think it must be the valves dragging and closing too slow. I have a deck height of .065. This is essentially a stock build, stock camshaft, etc. Any ideas? Is this perhaps a valve stem lubrication issue? |
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| thomasotten |
Jul 1 2018, 05:11 PM
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#2
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Senior Member Group: Members Posts: 1,572 Joined: 16-November 03 From: San Antonio, Texas Member No.: 1,349 |
Brass shaving found mid stem
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Posts in this topic
thomasotten Valve collision problem Jun 30 2018, 08:03 PM
thelogo
I am having a bit of a problem with my latest 2 l... Jun 30 2018, 09:58 PM
Mueller
I thought if the valve gets stuck or struck th... Jul 1 2018, 10:50 AM euro911 Deck height at the top of the barrels is one thing... Jul 1 2018, 04:29 AM bdstone914
I am having a bit of a problem with my latest 2 l... Jul 1 2018, 07:35 AM thomasotten Basically a stock build. But with 96mm
Pistons w... Jul 1 2018, 07:48 AM thomasotten Stuck intake valve Jul 1 2018, 07:49 AM Mark Henry
Stuck intake valve
I often see this when a seat... Jul 1 2018, 08:35 AM Mark Henry
Stuck intake valve
I often see this when a sea... Jul 1 2018, 09:30 AM Bartlett 914 Once the valve is bent, it is going to stick. Mayb... Jul 1 2018, 08:20 AM Mark Henry Possible causes:
Guides not sized/reamed/honed c... Jul 1 2018, 08:31 AM r_towle pistons put in upside down? Jul 1 2018, 10:52 AM thomasotten Photo of the stuck valve. When this happened to
... Jul 1 2018, 11:21 AM thelogo
Photo of the stuck valve. When this happened to ... Jul 1 2018, 02:50 PM sixnotfour top end oiling problem ?? no lube Jul 1 2018, 12:17 PM Mark Henry I'd check the clearance of the guides, most sh... Jul 1 2018, 02:33 PM Mark Henry Maybe you should get your injectors checked/cleane... Jul 1 2018, 02:36 PM thomasotten
Maybe you should get your injectors checked/clean... Jul 1 2018, 04:26 PM thomasotten So, after sitting on the workbench for a few hours... Jul 1 2018, 05:01 PM rgalla9146 Most likely issue is the guides are too tight. Jul 1 2018, 05:05 PM thomasotten It is hard to make a good photo of this, but looki... Jul 1 2018, 05:18 PM Elliot Cannon Next time, send them here. :D http://www.europe... Jul 1 2018, 05:21 PM bulitt They used the wrong size reamer ?
Roll that valve ... Jul 1 2018, 06:14 PM Mark Henry Hard to see, but definitely tight and a poor job. ... Jul 1 2018, 07:41 PM reharvey I had this exact same problem once and it was the ... Jul 2 2018, 06:13 AM thomasotten I won't be posting more about this until I hav... Jul 17 2018, 10:42 AM |
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