MTFCA Forum

The TT rear axel is out and apart. Every one of the bolts holding the differential together were finger tight and spinning in the carrier. Luckily there were cotter pins holding them in. Also found that one of the inner bearings had more slop than a pig pin. The part numbers on them crossed over to a new sealed bearing offered by SKF easily obtained on eBay. Going by the spec sheet on the SKF website it should be a nice upgrade. Funny thing is I had to do some of that math they teach you in school that you say you’ll “never use again”. I was wrong..... With that being said, and assuming my rusty math is correct, as long as I keep the axel temp under 250°F and the truck under 498 mph I’ll be set!

Do you have the low or high speed gears? Now is the time to put high speed gears in if you don’t have them. They have six teeth on the worm gear.

If you get a TT at 498 MPH and it's not as it's launching off a cliff, I want video!!

I always had a dream of putting a jet engine in the back of a TT and taking it to Bonneville... But that may be crazy!

Or is it?... heh heh heh...

Since going to the high speed gears, building and balancing the engine/transmission,
and adding the overdrive, I've been able to cruise at the speed of light.

Erik Barrett wrote: ↑

Fri May 08, 2020 12:52 am

Do you have the low or high speed gears? Now is the time to put high speed gears in if you don’t have them. They have six teeth on the worm gear.

I found a nice set of 5:1 gears to replace the 7:1. It’s one of the things that made me split the axel. Good thing I did.