Does anyone know anything about these Summit Coni-Seal Master Cylinders? They say they are for 81-85 RX-7's but I thought rear disk brake & GSL-SEs had different master cylinders?

http://store.summitracing.com/partde...5&autoview=sku

 

Am I correct in my assumption of the master cylinders being different from GSL-SE to regular? This is a good price on a master cylinder but I don't want it not to work.

 

I don't recall if there is a difference between the SE, GSL disc and S/GS drum masters or not. In the link to the online FSMs is a parts fiche. You might take a gander there. I suspect the difference may lie in the proportioning valve, but don't hold me to it. I do know the pp is different between the drum and disc brakes. When I swapped to the disc rearend, I didn't change either the master of the pp valve and have not noticed any braking deficiencies.

 

There is a difference but Im not sure where. On one all 3 ports are the same, but on I think drum brake ones, the rear port has a big fitting installed on the outlet. Im not sure but that might be where the residual pressure valve is located. On the summit picture you can clearly see it.

 

You guys are awesome, thanks!