Careful when mentioning my name and weighing in - fat Asian guys could take offense...<G>
Oil temps sound about right - my 16v (with a smallish Mocal cooler) are in the 270 range after a 30-45 minute session with Mobil 1 5W-30 oil. I agree with Josh - so long as you're using a synthetic oil, oil temps, are less critical. My coolant temps sky-rocket on the track though and I can't figure out why - I have a replacement radiator to install but haven't had a chance to do that yet (or even race in 2012 but that's another issue). I don't have any experience with Mintex other than an old set of Metal-Munchers that deliminated and another set of Red Box(?) that lasted 15 minutes before going the way of the dinosaurs. The GLi has 10.1s, IIRC. The GTI has 9.4s and I'm running Hawk HT-10s on my GTi because they work in a higher temperature range than the Blue. For the GLi, Hawk produces the DTC-30. I don't have experience with them but have heard they are excellent. We run 20 lap races which are 30-45 min in length - with the Blue pads, I'd encounter fading about half-way thru a race - the HT-10s have a similar feel from start to finish which helps build confidence although I still hold that the brakes are on the car in front of me ;) Chad - your idea of using an aggressive front pad combined with a lesser rear pad is fine. I've been doing that for years and find that the best rear pads are the Auto Zone "$19.99" (or cheaper) junk organic pads. Granted, your GLi has more weight in the rear than my GTi, the reality is that the vast majority of the weight in these cars is over the front wheels - under heavy braking, the suspension unloads the rear and the wheels lock up, even with heavy front springs to control the dive. I've tried everything short of re-plumbing the brake lines for a manual proportioning valve and it's just part of driving an FWD car. I have a competitor whose comment was "I NEVER look for your brake lights but when I see tyre smoke, I KNOW you're braking". When my crew guy, Brian, started racing (in my car), I watched him in a few turns - he'd ask "How'd it look? I was braking like mad". My initial reply was "You're not braking hard enough - no smoke". Forgive my ignorance - I've read so many threads, many of them on VWVortex which has certainly lowered my IQ to "vegatative" - is your GLi a street car or a track toy? If it's not a frequently used car, I'd suggest removing the front brake backing plates to enhance air flow. See how that works along with better pads - you may want to build ducts but there's not much room to work with since the car is FWD. My car had ducts but they "fell off" a few years ago and they never were rebuilt. When they were functional, I was using Blue pads so they were helpful but after the change to HT-10 and no ducts, I don't know that they're mandatory. Matthew (crawling back under my rock) >________________________________ > From: "[email protected]" <[email protected]> >To: Chad Rebuck <[email protected]>; a2-16v <[email protected]> >Sent: Sunday, June 24, 2012 8:09 PM >Subject: Re: [a2-16v-list] Oil temp / brakes at the track > >I wouldn't be so worried with the oil temps as long as you're using synthetic >oil. > >Real track pads make all the difference in the world. The gli is a fairly >light car, so you don't need a super aggressive pad choice. Maybe Matt yip >can weigh in there. I used hawk dtc70's in my ls1 944, but those would be >total overkill for you... > >Sent from my HTC on the Now Network from Sprint! > >----- Reply message ----- >From: "Chad Rebuck" <[email protected]> >Date: Sun, Jun 24, 2012 12:40 pm >Subject: [a2-16v-list] Oil temp / brakes at the track >To: "a2-16v" <[email protected]> > >I took my 16v turbo Jetta to the track yesterday and saw oil temps >around 280 nearing the end of the 15 - 20 min sessions. I'm running a >full synthetic and also have an external oil cooler. On the highway >the temps are about 200 just for reference. My brakes were feeling a >bit weak nearing the end of each session and my stomach was feeling >uneasy so it was no problem for me to take a break when oil temps got >this high. > >I put about 100 miles on the car at the track and 1/2 the front pads >are gone. Brakes are stock except for stainless lines, ate super blue >fluid, and minted redbox pads. I may try a set of track pads and new >rotors just for track use next time to see if they grab better when >hot. Any suggestions on pads to use? I was planning on only swapping >front pads/rotors at the track next time (leaving the rear alone). Is >that a problem? > >What oil temp is too high? I could go with a bigger oil cooler if >necessary but the coolant temp was between 1/2 and 3/4 on the gauge >already so maybe I'd need to beef up the coolant capability too if I >wanted to stay on the track longer each session. >_______________________________________________ >a2-16v-list mailing list >[email protected] >http://mail.a2-16v.com/mailman/listinfo/a2-16v-list >_______________________________________________ >a2-16v-list mailing list >[email protected] >http://mail.a2-16v.com/mailman/listinfo/a2-16v-list > > > _______________________________________________ a2-16v-list mailing list [email protected] http://mail.a2-16v.com/mailman/listinfo/a2-16v-list
