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Posted by: project-914 Jul 21 2010, 01:52 PM

I have looked all over only to find a few threads

I have learned that the regulator restricts pressure to the rear as to eliminate rear lock ups

what if I upgrade to a 911 front and a 19mm MC... then is a "T" fitting appropriate? who does the calculations here, I need info and brake balance and hopefully not a regulator!

thanks,

JOhnny

Posted by: Tom_T Jul 21 2010, 02:07 PM

The 914-6's had as OE essentially the 5-lug 911 front end & brakes F&R with the 19mm MC & still used the same regulator in the back as for the 914-4 4-lug brakes & 17mm MC - so it should work just fine with your OE regulator IMHO.

I'm changing to a 19mm MC on my 73 2L as part of the resto - with the stock brakes, & will keep the stock regulator.

Send a PM or email to Eric Shea at PMB (member vendor on here) & let him know what you're trying to accomplish & he can help you, as he's the real "914 brake guru"!

http://www.pmbperformance.com/calipers.html

Posted by: SLITS Jul 21 2010, 05:31 PM

Two six conversions using "T"s ... haven't locked up the rears yet ... "S" calipers upfront and stock /4 rears.

Oh well ... and the pressure settings were different with the /6, but a stock /4 will work. RTM.

Posted by: hydroliftin Jul 21 2010, 06:06 PM

I think this thread with much input from Eric Shea is the only one you need to read:
http://www.914world.com/bbs2/index.php?act=ST&f=2&t=104464

Pay particular attention to the attachment Eric provides to a Alfa Romeo technical bulletin and the graph of how brake preassures are affected by the regulator. I think one might conclude that it is a good thing to retain the regulator even in the stituation you describe.