929 master cylinder upgrade problem?
 

So got around to installing this 929 master cylinder on my reman brake booster and i noticed that once tightened down it would not sit flush. Removed and re tightened and still the same, made sure the 0-ring etc was good. Anybody have any ideas?https://cimg7.ibsrv.net/gimg/www.rx7...03df2e33e5.jpg

May need to measure the depth of the hole in the brake booster and measure that end of the brake master. Could also help to compare it to the stock master if you still have it around.

I've never done this process, but I've never heard of anyone running into this problem. It has to be some sort of basic mechanical problem - either that master is too long or it's binding up somewhere.

Dale

Yea when i go out tom i will have to compare the both of them. Thanks for the help

i dont think so as i do not have the pedal installed and per the fsm you only adjust it per the MC

When I installed my 929 master the banjo bolt would not fit flush and leaked. Even using two new washers did not help.
I went to a brake shop and replace the fitting with a normal brake fitting and the problem was solved.

I finished a 929 brake cylinder upgrade a few months ago. I repainted my old brake booster. From your picture, it looks like your remanufactured booster is warped with the left side bolt area pulled out some and the right side more depressed. This would throw it off and would also change the inner booster rod space. You would need special tool, which I have, to readjust the inner rod to right distance.
Mike

thanks for the heads up. Hopefully wont have to do that due to this being a chip motorsports unit.

Thanks for the info mike. Where did you pick the tool up from? How much? Ill most likely swing by my local mazda dealer soon. Ill pop the MC off and check my booser with a straight edge and level.

I bought mine from a specialty brake supplier a while back and I don't remember the name. Summit Racing sells one that is the same. It is the Baer Brakes Master Cylinder Pushrod Length Gauges. It is a little expensive for a single time use though at around $50.
Mike

thanks for all the info, very helpful. im gonna see if i can measure it with some calipers i have first.