Okay Brain-Trust, I have noticed a fairly pronounced vibration at 2500 RPM's which is worse the faster I am going. The vibration is only present when the engine is under power with a load on it (in gear). I thought it was the rear differential as the pinion flange had play in it. Had my local shop rebuild the rear diff with a Cruiser Outfitter rebuild kit. Vibration persists after the repair. The engine generally runs fairly smooth, but there are some hesitations in accelerations at certain points which I was chocking up to vacuum leaks, bad fuel flow, carb issues, or other areas which may need attention at some point. Stock 2F w/ Smog - 4 Spd - 31" Tires on 2" OME Lift
Thoughts on what this vibration could be:
1. Engine Mounts - Cracked or maybe damaged? When I hit a certain harmonic the engine is vibrating in the mounts?
2. Bad Cylinder - Getting a misfire or have a dead sparkplug in one of the cylinders maybe?
3. Weird Harmonics - Something where the right engine RPM creates a harmonic I will never be able to track or fix?
4. Something in the Knuckles - I redid the knuckles myself with Cruiser Outfitter kits and some very detailed YouTube videos. Torqued to spec and checked pre-load. Not sure what if anything could have gone wrong to cause this issue. This just the first major project (other than the lift) I tackled myself.
5. YOUR GUESS GOES HERE....
Thoughts on what this vibration could be:
1. Engine Mounts - Cracked or maybe damaged? When I hit a certain harmonic the engine is vibrating in the mounts?
2. Bad Cylinder - Getting a misfire or have a dead sparkplug in one of the cylinders maybe?
3. Weird Harmonics - Something where the right engine RPM creates a harmonic I will never be able to track or fix?
4. Something in the Knuckles - I redid the knuckles myself with Cruiser Outfitter kits and some very detailed YouTube videos. Torqued to spec and checked pre-load. Not sure what if anything could have gone wrong to cause this issue. This just the first major project (other than the lift) I tackled myself.
5. YOUR GUESS GOES HERE....