engine rebuild gone wrong
Thread Starter
Intermediate
Joined: Mar 2002
Posts: 41
Likes: 0
From: rosamond ca
engine rebuild gone wrong
Need help I rebuilt the engine and now there is a wierd metallic tingy sound comming from the drivers side, it sounds like the valve train but i have had everything checked even went as far as to put a seccond set of new lifters in, no change. the sound is always there but some days it's loud other days not, tried valve adjustment and it gets better but after a day or two it's back, any ideas? :cry
Le Mans Master
Joined: Oct 1999
Posts: 9,713
Likes: 3
From: Sachse Texas
Cruise-In I Veteran
Cruise-In II Veteran
Re: engine rebuild gone wrong (91project)
Are you sure there is planty of piston to valve clearance? I know several guys that rebuilt, then had piston to valve clearance problems. One guy found imprints in his pistons where the valves had been hitting. How many miles are on it? If you have a lot, then it is probably something else.
Did you change cranks (stroker)? Tell us about the rebuild...
If you did a stroker, I have heard of some people not nothing their pan and getting some noise from the crank hitting the windage tray or the pan itself.
It is pretty hard to guess what it is based on a tinny sound. I have had a lot of tinny sounds out of my setups in the past. They can be caused by many things.
Did you change cranks (stroker)? Tell us about the rebuild...
If you did a stroker, I have heard of some people not nothing their pan and getting some noise from the crank hitting the windage tray or the pan itself.
It is pretty hard to guess what it is based on a tinny sound. I have had a lot of tinny sounds out of my setups in the past. They can be caused by many things.
Thread Starter
Intermediate
Joined: Mar 2002
Posts: 41
Likes: 0
From: rosamond ca
Re: engine rebuild gone wrong (robert kirk)
Thanks for the inputs, no it wasn't a stroker, valve springs are new, valves are new, crank is new. sound seems to be comming from number 5 cylinder all the rest are fine. driving me crazy
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: engine rebuild gone wrong (91project)
A friend of mine had a terrible sound that we couldn't find. It sounded just exactly like a valve ticking because the rocker arm was too loose. We tried everything, lifters, rocker arms, everything.
Finally we just pulled the heads off and found the problem. Somehow his valve seat had come out and it was traveling up and down with the valve! Luckily it was falling back into place each time and thus the piston didn't hit the valve, but that could have easily destroyed that piston had it not fallen into place so perfectly.
Finally we just pulled the heads off and found the problem. Somehow his valve seat had come out and it was traveling up and down with the valve! Luckily it was falling back into place each time and thus the piston didn't hit the valve, but that could have easily destroyed that piston had it not fallen into place so perfectly.
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Burning Brakes
Joined: Feb 2000
Posts: 1,206
Likes: 0
From: USA USA
Cruise-In II Veteran
Re: engine rebuild gone wrong (Nathan Plemons)
Totally different engine,but my Briggs and Stratton did the same thing!
I hope its not your seat. The seat was egg shaping the head and causing
NO COMPRESSION on that side of the engine. Check compression first on a couple of cylinders and see what you get.
Matt
I hope its not your seat. The seat was egg shaping the head and causing
NO COMPRESSION on that side of the engine. Check compression first on a couple of cylinders and see what you get.
Matt
Race Director
Joined: Aug 2002
Posts: 13,356
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From: tucson AZ
St. Jude Donor '04 & '05
Re: engine rebuild gone wrong (No Go)
I agree with No Go....did you check for blown gasket in your headers????
Just a simple thought.....If you do finally figure it out please enlighten us..
thanks
:smash:
Just a simple thought.....If you do finally figure it out please enlighten us..
thanks
:smash:
