Originally Posted by andy733
how do you stop the diffs from leaking? have tried the longer screws and they still leak,also have found that the screw strip very easily as well
I tried longer screws but found that just tightening them more just bows the cap and leaks like crazy.
Have a look at it side on, you will see if it is bowed so as the other posting said NOT to tight, not to lose, like Goldielocks said just right. And even is important too.
I use titanium screws from 3 racing I think 10 mm long.
Also check for mold dags, small imperfections in the end of the main housing just a small piec of a dag will cause a leak. I like to gently sand the end of the diff housing with 1200 wet and dry. Get a good flat surface and a clean pece of 1200 and just a sand it until you see that the whole face is nice and flat.
I also use some flange sealer, it's like silastic but much thinner and does not realy dry like silastic. Put a smal amount on two fingers then wipe a clean gasket between your fingers, just a smear of sealer nice and even. Since I build them this way no more leaks. A bit of over kill ? Yes, but that's how I roll. ( BANG, BANG )
Take care not to spill silicon every where.
But drilling out the screw holes is a good idea too. Just use the right size dril don't make the hole any bigger you just want any trapped silicon and air out and so you don't stop the screw from being able to do up tight.
The - B upgrade only makes the rear diff stronger on the side the brake spline is on. But do check the markings one the diff caps make sue the D and the B cap are on the right housing.
And they use longer screws in the later kits I think.
Hope this helps.
Have fun this is a great car.
All I have to do is drive to the capability of this great car and I might do all right.