Brake Upgrade Success! Options

[Eddie914]

Thanks for all the helpful advice I received from everyone on the board!

I recently purchased a '71 914/6 2.7. The car was a 1.7 converted by the PO. Pretty rough but with a bunch of nice parts.

The original 914 rear brakes were seized solidly. A friend donated a set of freshly rebuilt of '79 911SC rear brakes (thanks Harry!) which upon initial inspection did not fit!

The 5 lug conversion to the original rear hubs stretched the metal enough that the outer diameter of the hub was greater than the inner diameter of the 911SC brake rotor. A little grinding fixed that ... but then there was minimal clearance (like 0.001") between the friction surface of the rotor and the caliper mounting tab on the swingarm. A 5mm wheel spacer between the hub and rotor provided nearly perfect spacing. Adding a 0.050" washer between the 911SC caliper and the 914 mounting brackets centered the calipers perfect.

Ate Super Blue Brake Fluid and Porterfield R4 brake pads finished off the installation. The rubber brake lines were also swelled shut so a set of Stainless Steel braided brake lines were installed at the same time. I have not had a chance to get the pads bedded in and all the air out of the lines but initial impressions are pretty good. When I get the car licensed, I'll be able to drive more than just around the neighborhood!

Now the $39 question ... The 914 now has 911SC calipers and rotors front and rear, with matched Porterfield R4 pads. Should I remove and/or replace the stock brake proportioning valve? The car will primarily be a track car but will be street legal (sort of) and oc

Thanks Again!

Eddie

'71 914 2.7

[914werke]

Here Here! Welcome. I am in sort of the same boat Eddie but since I plan on just using S-calipers on the front, recently picked up a "T" from fellow lister James Adams. Now waiting for some dry roads to do some testing.