Engine vibrations at high rev
#1
Engine vibrations at high rev
Here is my story.
Changed my S5 engine with an S4 short block streeport. I was doing my break in procedures. Everything was super fine until I arrived at the step of 5500 rpm. The engine shackes and I felt it under my seats (tranny suports). Then, just by revving it on neutral, small vibrations began around 4000-4500 rpm...
I've talk to people and they suggest it is the flywheel. I've put an S4 flywheel on my shortblock, but I bought from a guy that told me it was an S4. Didn't check the number on it, but I thought it was ok cause it was different from my previous S5 flywheel. Could it be a turbo flywheel ???
I want to know everything I have to check before I pull the tranny down... any suggestions that could cause the vibrations at high revs ? Already bought a S4 flywheel (326). For now, the rest of the car is completely stock except for an high flow cat.
Thanks
Changed my S5 engine with an S4 short block streeport. I was doing my break in procedures. Everything was super fine until I arrived at the step of 5500 rpm. The engine shackes and I felt it under my seats (tranny suports). Then, just by revving it on neutral, small vibrations began around 4000-4500 rpm...
I've talk to people and they suggest it is the flywheel. I've put an S4 flywheel on my shortblock, but I bought from a guy that told me it was an S4. Didn't check the number on it, but I thought it was ok cause it was different from my previous S5 flywheel. Could it be a turbo flywheel ???
I want to know everything I have to check before I pull the tranny down... any suggestions that could cause the vibrations at high revs ? Already bought a S4 flywheel (326). For now, the rest of the car is completely stock except for an high flow cat.
Thanks
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zuesskroph
2nd Generation Specific (1986-1992)
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08-13-15 06:05 PM