At the recent Tamworth Hillclimb i suffered for the very first time ever, bad axle tramp when leaving the start line.
I quickly realized that if i left the line with a little less revs ie 4000rpm instead of my usual 5000rpm the car did not tramp.
The car was also popping out of third gear under deceleration which was very frustrating. After the Tamworth event i closly inspected all mounts with the car jacked up in the air and could not find any probs at all. I put the tramp down to a newly resurfaced start area.
I also removed the shifter rod and found it bent like a banana and the bush badly damaged. After replacing the bush and straightening the rod i was ready for Grafton.
First run at Grafton i again suffered bad tramp and for the rest of the weekend had to walk the car of the line ie 1500rpm to avoid tramp.
When i got home last Monday i decided to look under the car while still on the trailer, and spotted a tiny crack in the left hand banana mount. I must have missed it before because i had the car jacked up of the ground with no weight on the wheels.
So Monday i pulled the engine and removed the gearbox mount. The left hand banana mount had a small area were the rubber was coming away from the steel were it bonds. You would never see it unless you were looking for it, the crack is that fine.
After talking to Larry we decided to solid mount the gearbox and Saturday afternoon after work i installed the new gearbox mount then the engine. I also took the time to check all nuts and bolts and fuel lines etc to make sure everything was good.
So today i finshed the engine install and then gave the car a few drag race starts out of the shed. Thankfully all was good with no tramp. One tiny little crack in one mount caused a lot of headache but thats racing hey. A big thankyou to Larry for the solid mount and your advice.
Looking forward to the next event in two weeks which is Cooperbung Hillclimb.
Cheers Col
colin Fahrvergnugen
984 posts · joined Mar 2007 ·
