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Upon further inspection today we found 3 broken poly locks in our roller rockers! We are going to replace them all in the morning, and readjust the lifters to .18 all the way around. Between the fixed locks, the brand new distributor, new plugs gapped to 35, and a new set of plug wires.. I hope we have this issue fixed. I will report Saturday night after the races.
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Last edited by HRGraphics; 07-17-2014, 09:03 PM. -
When you say "broken poly lock" how was it broken? Where was it broken? Did it break the stud?Personally, I think you have a head gasket problem.BUCKLE UP NOW, YA HEAR?
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Number 2, 6 and 7 were broken down the base, split towards the hex. We believe having them set at .22 had too much play and wiggled loose and ended up breaking from wearing themselves out. Studs were fine. Sound accurate?Originally posted by let-r-eat View PostLast edited by HRGraphics; 07-18-2014, 09:02 AM.Comment
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Check for valve spring coil bind.Gator EngineeringComment
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No something does not sound correct .004 more gap in valve clearance will not break poly locks. Take a compression test. Look everything over real well. Talk to your motor builder, tell him what you have found. I would check the push rods on those cylinders roll them on s smooth straight surface ( glass or a counter top ), are they bent any? If they are have valve and pistons touched? Bent valve? How is the time to check, you do not want to hurt a good motor. You have done great to find this problem, look farther! Make sure everything else is OK with then valve train, could this be a result of something else going on , or going to happen. Might want o talk to your motor builder before you race this weekend. Just my thoughts, just do not want see anybody hurt their motor. MikeComment
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Sounds like electrical to me. Make sure you have sufficient engine grounds, also try unhooking the tach. I have seen this happen on rare occasions. Also, may want to try by-passing the battery shut-off switch, and/or replacing your ignition toggle switch, another commonly over-looked thing. If electrical system checks all good, I would do a cylinder leak-down test, way, way better than a compression test. Good luck!Last edited by dirtplay18; 07-18-2014, 11:26 AM.Comment
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Engine ran decently for about 6 laps in the heat race, still smoked until lap 7, then we put on a real smoke show. She gone. LolComment
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Oh well, that's a part of racing and the reason they make backup engines.Originally posted by HRGraphics View PostComment
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Just some oil pan vent holesOriginally posted by HRGraphics View Post
But in all seriousness, that really stinks. Hope you get up and going again!#72W U.M.P Stock CarComment
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For sure, looking for that racers edge! Lol. We were expecting it to go soon with the issues we are having. It let us know it was about to go with a he'll of a rackett. There's water throughout the entire block and under the valve covers we are tearing it apart now. We have a engine almost ready to drop in if these heads check out good again.Originally posted by 72Dubya View PostJust some oil pan vent holes
But in all seriousness, that really stinks. Hope you get up and going again!Comment
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Hate to see that, better luck with the new bullet...MikeComment
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I would check the coil bind on those heads before I ran them again. May just transfer the problem even if its a new cam.Originally posted by HRGraphics View PostGator EngineeringComment
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Everything below the intake is junked! That's okay though we will be back out Saturday even stronger, I appreciate the help men!Originally posted by DaveBauerSS6 View PostComment
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For anyone curious what happened. 5 lifters and push rods are totally gone. Pieces of scrap are lifters, chaos went down inside of this engine. LolComment
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just a thought, Weak valve springs. Valve sucked open, it piston and boomComment
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