Results 1 to 9 of 9
Thread: harmaonic vibration
-
06-12-2010 #1
Registered User
- Join Date
- Sep 2009
- Location
- calgary alberta canada
- Posts
- 11
harmaonic vibration
Just rebuilt my 69 chevelle power train from the tranny back new fordgline 18 inch wheels new bearings balenced the drive shaft u joints disk brakes all new and now at 70 mph Ive got this harmonic vibration that I cant figure out any one with this same problem have any solutions.
-
06-12-2010 #2
Registered User
- Join Date
- Jan 2007
- Location
- CT
- Posts
- 782
would help to know what trans / rear gear / rear suspension / driveshaft shaft diam. / Trans mount / body mounts / who's driveshaft / RPM and Gear vibration happens at.
All these variables can create unwanted harmonics.________________
Nick S.
Gold/Gray 1967 Camaro
06-12-2010 #3
Registered User
- Join Date
- Oct 2009
- Location
- Sleepy Hollow,IL
- Posts
- 336
I had a strange vibration but at a certain rpm. New trans, engine and driveshaft. It was the fan clutch.
Last edited by Taman; 06-12-2010 at 07:36 AM. Reason: added
06-12-2010 #4
Registered User
- Join Date
- Sep 2009
- Location
- calgary alberta canada
- Posts
- 11
the tranny is a turbo 400 with a 3500 stall springs are made by quickensuspension with internal air bags rear end is a 12 bolt posi with 355 gears and mozer axcle bearings the driveshaft is stock and was balanced transmount is new stock body mounts are new stock as for rpm mostley at highway speeds above 4000 rpm under 60 mph its smooth. and the fan clutch is new as well.
06-12-2010 #5
Registered User
- Join Date
- Sep 2006
- Location
- Henderson,NV
- Posts
- 2,870
Working angles, more specifically driveline angles. You've made some engine and suspension modifications. You need to dial it back in...
Todd
06-13-2010 #6
Registered User
- Join Date
- Jan 2007
- Location
- CT
- Posts
- 782
there is some good info here for checking your angles.
http://www.drivetrain.com/parts_cata..._problems.html________________
Nick S.
Gold/Gray 1967 Camaro
06-14-2010 #7
-Moderator-
- Join Date
- Apr 2005
- Location
- USA
- Posts
- 4,462
Check your powertrain ( driveline) , driveshaft , and pinion angles..
Jeff Tate
U.S.A.
"The best thing about participating in these events is that you get to hang out with a group of intelligent like minded people who live to achieve things in their lives. You won't find a lazy, mean, or dumb bone in their bodies." Bret Voelkel, RideTech
08-08-2010 #8
Registered User
- Join Date
- Aug 2007
- Location
- Jonesboro, Arkansas
- Posts
- 2,506
I've had this happen as well!!! Although several years ago.
Originally Posted by Taman
Carl Wilson
1968 Camaro - T-56 6 speed - 383 Stroker, 2014 Mustang GT seats. FiTech EFI, Tanks Inc. Tank with Deutschwerks fuel pump.
09-17-2010 #9
Registered User
- Join Date
- Sep 2009
- Location
- calgary alberta canada
- Posts
- 11
Thanks for the info checked the u joints first they looked and felt great but just to be on the safe side I changed both the front and back to a high strenght units and it fixed the problem until I get to the 90 to 100 mph speeds and miss harmonic came back now I going to play with the pinion angles to see if this will get rid of it at warp speed the drive train .com web site is a good site for refrence I keep you posted if this works
Reply With Quote
