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Re: Vibration Problem at Higher RPM's. PLEASE HELP [Re: pnypwr] #334671 08/06/09 10:59 PM 08/06/09 10:59 PM
Joined: Jan 2004 Posts: 6,445 Missouri 68KillerBee OP master
68KillerBee OP master Joined: Jan 2004 Posts: 6,445 Missouri	Quote: hmm hows your fan and water pump? drop the belts and give it shot, I jad a 5.0l mustang that would shake out your fillings...water pump sprung a leak, changed it smooth as a babys bottom...step one drop the accessories and try! we did that, still a vibration. with everything attached clutch pressed in or out, driving or just revving up, the vibration appears. with the clutch, pressure plate, d-shaft and trans out there was no vibration at any rpm. put in new clutch, pressure plate, flywheel (refurbished from brewers), rebuilt transmission, new throw out bearing, and the vibration is still there

Re: Vibration Problem at Higher RPM's. PLEASE HELP [Re: 68KillerBee] #334672 08/07/09 11:40 PM 08/07/09 11:40 PM
Joined: Jan 2003 Posts: 512 Niwot, CO Formerly denn... dynorad mopar
dynorad mopar Joined: Jan 2003 Posts: 512 Niwot, CO Formerly denn...	Perhaps I am not understanding your reply. Are you saying you started the engine without the tranny and there is no vibration?

Re: Vibration Problem at Higher RPM's. PLEASE HELP [Re: dynorad] #334673 08/08/09 12:14 AM 08/08/09 12:14 AM
Joined: Jan 2003 Posts: 14,471 renton, Washington ph23vo I Live Here
ph23vo I Live Here Joined: Jan 2003 Posts: 14,471 renton, Washington	it sounds like you may have a big rod 440 and need the external balanced damper... if the vibration is there just revving the engine then its SIMPLY an internal engine balance issue..if it does it driving only and pushing the clutch in doesnt affect it its SIMPLY a trans to rear end issue... i think you are so turned around from screwing with it you are confusing your self..so if its vibrating sitting in the driveway its the engine.. good luck dan

Re: Vibration Problem at Higher RPM's. PLEASE HELP [Re: ph23vo] #334674 08/16/09 01:25 PM 08/16/09 01:25 PM
Joined: Jan 2004 Posts: 6,445 Missouri 68KillerBee OP master
68KillerBee OP master Joined: Jan 2004 Posts: 6,445 Missouri	no confusion here at all (other than why the vibration is present ) yes, we started it with just the flywheel, starter, and bellhousing and there was no vibration at all.- that means it is not in the motor. (save for a balance issue which we've figured out there should not be one. everything should be zero balance) once we put it all back together(minus driveshaft). you can start it and feel the vibration with clutch in or out. putting the driveshaft in and driving it around in gear its still there. we are going to replace the bellhousing next after talking with jamie passon at the nationals. this car used to run fine as is, but the vibration eventually developed and its been downhill since haha

Re: Vibration Problem at Higher RPM's. PLEASE HELP [Re: 68KillerBee] #334675 08/16/09 02:53 PM 08/16/09 02:53 PM
Joined: Apr 2008 Posts: 233 WV,USA W wvmarv enthusiast
wvmarv enthusiast W Joined: Apr 2008 Posts: 233 WV,USA	If you shove the clutch in at vibration speed and you still have the exact same vibration its not in the engine or flywheel. When you shoved in the clutch you disengaged the the engine and flywheel from the trans and drive shaft and rear end, if you still have the vibration its in the trans or drive shaft/rear end. Put the rear end on jack stands with rear wheels off the ground and see if you can duplicate the vibration, if you can't duplicate it on the stands it's not in the drive train. Try the tires and wheels.

Re: Vibration Problem at Higher RPM's. PLEASE HELP [Re: 68KillerBee] #334676 08/16/09 07:58 PM 08/16/09 07:58 PM
Joined: Oct 2007 Posts: 236 Richmond , Virginia C chagjr enthusiast
chagjr enthusiast C Joined: Oct 2007 Posts: 236 Richmond , Virginia	Quote: ok, here is what all has been replaced since the vibration started... new clutch, throw out bearing, resurfaced flywheel, heads reworked, carb rebuilt, new spark plugs, different harmonic balancer, and new motor mounts.... it happens with the clutch in and out but only at higher rpm's. at idle and a little above idle it doesn't vibrate at all. It's a 440 with a 4 speed behind it. could something be screwed up with the cam, crankshaft, or rods and the motor still run normal (at idle)? it's been over 2 years since we've started messing with this and i just wanna go cruisin around with my dad in our 4 speeds please ask any and all questions and i'll answer them as soon as i can. thanks in advance What is higher RPM? (3000, 4000, 5000) F.A.S.T/1969 SUPER BEE/383/AUTO/AVS 11.58 @ 117.98 1.71 60ft mph F.A.S.T Legal 1969 DART SWINGER/340(420CI)/6.52 @ 105.39 1.45 60ft (1/8 mile)10.22 @130.5 (1/4 mile) Harry

Re: Vibration Problem at Higher RPM's. PLEASE HELP [Re: wvmarv] #334677 08/16/09 11:46 PM 08/16/09 11:46 PM
Joined: Jan 2003 Posts: 512 Niwot, CO Formerly denn... dynorad mopar
dynorad mopar Joined: Jan 2003 Posts: 512 Niwot, CO Formerly denn...	I just reread the post start to finish. You had no vibration with the old flywheel but now you have a vibration with the new one. With the clutch in the trans should be decoupled. I think your new flywheel is the culprit. When you get to the point of tearing it apart again get it in the "engine only configuration" with the new flywheel. Check for vibration. If its OK add the clutch and check again.

Re: Vibration Problem at Higher RPM's. PLEASE HELP [Re: dynorad] #334678 08/19/09 05:59 PM 08/19/09 05:59 PM
Joined: Jan 2003 Posts: 14,471 renton, Washington ph23vo I Live Here
ph23vo I Live Here Joined: Jan 2003 Posts: 14,471 renton, Washington	so you started the engine with the bellhousing on so you could bolt a starter on... the flywheel [you are using the same one in teh car now right?] the harmonic balancer must have been on??... but no engine accessories?? ...well it MUST be the PRESSURE PLATE thats the only different piece that has rotational mass! dan

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