wannabefaster

The Turbo S spindles are purported to be stronger than 87 spindles. My question is where's the beef?.... They both take the same bearings, so i assume the actual spindle size is the same.

Peter

Dave E

I bought an 89 recently and moved my cool brake kit from my 86t to the 89. The spindles on the 89 were much larger and I had to enlarge the backing plate of the cooling kit to get them to fit over the spindles. I thought I read somewhere on the list that the change occurred with the 87 model year though.

belz

It is my understanding that the 87-89 spindles are the same.
The 86 spindles are slightly smaller as evidenced by the different wheel bearings ...

Matt Sheppard

Yes, M030 spindles are more sturdy than reg. ones. Here is how I understand it:

'86 spinles: Uses a hub unit that bolts to the rotor just like the 944NA (same part #?). The spindle itself was thae same as a NA

'87-'88 spindles: Uses the brake rotor as the hub and the spindle is redesigned (different part #) to take more stress and to accomidate ABS if optioned.

M030 spindles (Turbo S and '89 Turbo): Larger and provides the radial 3 1/2" bolt center that allows the S4 brakes or Big Reds to bolt on w/ out adapters. Pricey; usually $500 a set if and when you can find them, that's just the spindles.

Am I right here?