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Engine Failure after head and cam install UPDATE 03/28/13

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Old 03-21-2013, 04:57 PM
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Sorry to hear about this, did you snoop around anymore? Did you reuse your stock cam plate? sometimes when its overtorqued they crack and the cam will walk out... I know its a guess but something happend in 20 miles right? that narrows it down a little to something was done wrong or a freak accident happend..
Old 03-21-2013, 05:22 PM
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pull valve covers, plugs, and oil...inspect them all.
Old 03-21-2013, 05:35 PM
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Probably a stupid question, but did you get the car tuned? If not, did you go WOT at all?
Old 03-21-2013, 05:41 PM
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Did you pull valve covers yet? If you dropped a valve it should be obvious to see. Possible you over revved it and kissed a piston? Even though it is new parts they can break. Not often, but a valve head can pop off, springs can break, etc.
Old 03-22-2013, 08:10 AM
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Originally Posted by 1_MEANZ28
You did the work work man or did u take it to a local shop? Vengence ,jd,etc?
I did the work myself, working in a tight budget
Old 03-22-2013, 08:12 AM
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Originally Posted by KevinR
Probably a stupid question, but did you get the car tuned? If not, did you go WOT at all?
Not tuned yet I had a previous tuned as a cam only. but not WOT, always kept the rpms between 1500 and 2500 rpms, I was trying to break it in at least 100 miles before send it to tune
Old 03-22-2013, 10:18 AM
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Originally Posted by ZERO_POLLO
Not tuned yet I had a previous tuned as a cam only. but not WOT, always kept the rpms between 1500 and 2500 rpms, I was trying to break it in at least 100 miles before send it to tune
May I ask what your thought process was here? Running an aftermarket head and cam combo without a proper tune is asking for trouble.
Old 03-22-2013, 10:21 AM
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What exactly were you breaking in?
Old 03-22-2013, 12:01 PM
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Originally Posted by Rare96LT1Formula
May I ask what your thought process was here? Running an aftermarket head and cam combo without a proper tune is asking for trouble.
I ask a local mechaninc and he told that it was fine but not to go WOT.
Old 03-22-2013, 01:37 PM
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def. not "fine" should have had a tune, you had nothing that requires a break in period.
Old 03-22-2013, 01:42 PM
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Originally Posted by ZERO_POLLO
I ask a local mechaninc and he told that it was fine but not to go WOT.
Old 03-22-2013, 02:17 PM
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give the guy a break, im sure most of us have been there. Sounds like something is keeping it from turning tho, check it out! maybe bent a valve or 8?
Old 03-22-2013, 02:23 PM
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You don't suppose that local mechanic was looking for work do you?? Sorry to hear about your problems. Sometimes the budget needs to be stretched so this doesn't happen. Better days ahead!!!
Old 03-22-2013, 02:24 PM
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Originally Posted by tjwashow
give the guy a break, im sure most of us have been there. Sounds like something is keeping it from turning tho, check it out! maybe bent a valve or 8?
no one is giving him a hard time, we are just trying to figure it out.
Old 03-22-2013, 02:38 PM
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Originally Posted by ldyzluvdis06
no one is giving him a hard time, we are just trying to figure it out.
hopefully its not too bad for him. but it sounds no bueno.
Old 03-22-2013, 03:02 PM
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well I learned it the bad way, But I will make it work, any help is appreciated. I will tear it down this weekend and go from there, I'm determined to find the problem and fix it
Old 03-22-2013, 03:18 PM
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You never answered my question I posted earlier, but what cc did you get the heads at?
Old 03-22-2013, 03:27 PM
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I'm sorry but the tune is not going to cause a mechanical failure like this. Many people run untuned fur a while. I also drive a while on a new build just to make sure everything is okay before waisting someone elses time at a dyno session. Also a motor running with a spark plug wire not on is completely different than a motor trying to run with the valve hanging open from a broken valve spring. The first thing that needs to be done is to pull the plugs and look at them closely for clues of the problem cylinder, and then try to turn the motor. Then the valve covers need to come off and the valve train inspected very closely. Check lifter preload and for loose rocker bolts. Also check all the push rods that none are bent. From there the heads may need to come off. Also before the heads come off you can pull the valley cover and look down in there at what cam lobes you can see and look for damage there too. If lifter preload was wrong it could have beat up a cam lobe or lifter. But in all honesty it sounds like some bent valves since it won't start and hard to turn. Good luck and hope this helps.
Old 03-22-2013, 06:30 PM
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Originally Posted by MM98
You never answered my question I posted earlier, but what cc did you get the heads at?
They are 61cc
Old 03-23-2013, 05:19 AM
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Man, im sorry to hear that. Hopefully its something small. Sucks spending all sorts of money on your car only for it to fail soon after


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