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The upgrade is to the big reds, yellows, or whatever color you want from the 993 Turbo and put the non S front calipers on the rear. Any other brake upgrades for our cars will not produce better braking when you consider the cost, and I'll state you won't get much better over this, even when you consider the additional cost.
Our cars weigh less than the 993 cars, and the M030 turbo S brakes with proper pads and rotors will outbreak most cars delivered to date with similar HP. If your car has ABS, keeping things part of the Porsche parts bin within bolt on configuration is best.
I've never felt I've needed more braking when I've used the best that Porsche had to offer to bolt up to my car. Porsche puts as much engineering into their braking systems as they do into the suspension and motors.
Most of the cars I've driven with similar HP as mine didn't have as good braking ability as my 89 951. We are fortunate that our cars allow some of the best brakes from the Porsche braking parts bin. We can bolt up great upgraded parts and allow the factory ABS to work as originally designed.
What you will notice is that when you upgrade the caliper size, the ABS comes on much later as better brakes lock up much later, as you need less pedal pressure when slowing down. Bigger pistons, larger calipers, and larger tires allow less ABS intrusion when loading up on the brakes. Less heat build is the paramount reason to upgrade.
Nice fit
Any suggestion where to get 993tt rotors?
Depending where you live [ha, just noticed you are in Slovenia!] either Sunset in Beaverton, OR or Delaware Porsche Parts are the two dealers I use.
Unless you plan to use aluminum hats [ugh, also noticed you have the Kokeln hats. FWIW I tried those with 993TT rotors and had horrible vibration. Replaced that setup with the 3.6 Turbo rotors and have never had an issue. I still have the 993TT rotors with less than 2000 miles. Would be happy to sell them to you but shipping might be excessive] with the 993TT rotors I don't think you want them as they have a different offset than the vented 911 C2 3.6 Turbo rotors, which are P/Ns 965-351-045-00 and 965-351-046-00. The last set I bought from Sunset in September 2020 were $203.04 each. If you order $450 plus in parts thru the end of May and use discount code LOVEMOM10 you can save 10% at Sunset.
Anyway, maybe someone else can use the discount code to save some money at Sunset.
Thanks! How much for your 993tt rotors? Kokeln hats seem pretty quality parts, anybody else had issues with them?
Sorry, I was mistaken about the mileage. Checked my records and they have 8,130 miles. I can get them out of storage and post a picture. If you don't need the iron hats and only the bolts, both would fit in one Porsche box. New prices at Sunset are $256 left, $252 right. You can have this pair for $150 if they look good to you.
Not sure what the issue was with the Kokeln hats, but as I recall they did not fit in the rotors as tightly as the iron hats, so they may not have been exactly centered. Could also be a thermal expansion issue. The Lindsey hats are shaped differently as I recall.
Nice fit
Any suggestion where to get 993tt rotors?
Just as an FYI... the socket head bolts to attach the calipers to the spindles need to be 928 GTS or 993 TT length as stock 951S, M12x70 are too short because the calipers are not as tall. I originally used the 928 GTS, 900-067-268-02, M12x80 ($8.32 each at Sunset). The 993 TT uses 999-067-042-09, M12x77 ($4.42 each).
Just as an FYI... the socket head bolts to attach the calipers to the spindles need to be 928 GTS or 993 TT length as stock 951S, M12x70 are too short because the calipers are not as tall. I originally used the 928 GTS, 900-067-268-02, M12x80 ($8.32 each at Sunset). The 993 TT uses 999-067-042-09, M12x77 ($4.42 each).
The bolts that were used for spacers are spot on, hex head, probably oem 993tt..
You can always get some affordable custom hats/rotors made up by Coleman racing. They'll make whatever size you need and not expensive.
I wanted to go off the chart with 8 piston vw phaeton calipers and custom hats+bigass rotors, but it's challenging, expensive and homologation and papirology for street/MOT would be a real PITA so I'll try to go under the radar with stock porsche bin parts as much as possible. I just hope these hats will work and won't shake as tom's did.
I did a lot of searching and found this procedure to balance the rotors with hats of choice before using them.
Yeah, those are the same markings / connections as on my '89.
Thanks. Since the pistons are same on big and medium brembos, this should work as intended I guess. I'll also use 4 channel mk60 abs/asc so this should be fun.
The bolts that were used for spacers are spot on, hex head, probably oem 993tt..
Ah, yes I can see the bolt head just protruding from the spindle in that picture. I think my GTS bolts stick out a few mm more.
That BMW site has good info on truing the rotors, which may have been my problem. I still have the Kokeln hats, same as Goran's in hard anodized finish... thought I sold them years ago... if anyone needs a pair :-)
BTW, I have 8-piston Audi RS4 calipers on my 2003 A4. They work great and were a direct bolt-on. Rear brakes are B7 S4. HUGE improvement from the very weak stock setup.
05-21-2021, 10:55 AM
