Big Reds
11-09-2004, 06:27 PM
#31
Rennlist Member
i would think thats more than possible. heck, in my old 84, at 200 at the wheels , i was calling out 115mph on video on our first trips to thunderhill. thats a stock car and a straight that is about 1/2 as long as turn 2-3 at Road America. take a look at your rpms next time just before you slam on the brakes (#3 marker, right?) and let us know. i bet you are 5700rpm in 4th!!! (in a 84 gear box)maybe 6k in a 79 gear box in 4th
200hp, nice?? what do you have now???
mk
200hp, nice?? what do you have now???
mk
Originally Posted by Hacker-Pschorr
Mark - I'll let you know how much power it takes to reach 130mph into turn 3 - so far I'm not even close. Then again, having 200hp would be nice.......next year.
11-09-2004, 07:20 PM
#32
Rennlist Member
"how" you brake, how often and what amount of energy are you trying ti dissapate are the key factors in determining your braking needs. Also important is feel under threshold braking...on the verge of ABS engagement. Larger swept areas and brake torque will allow better modulation at these limits.
In general, novices at the track will toast the brakes a few times before learning how to "use" the brakes... I have seen, and been in 928s, where the driver overheated the system and caused a brake failure....but that is a driver issue, not a brake issue.
DEVEK Cup level brake kits come with calipers, factory rotors, brake lines, brake pads, all machining, bolts, washers,sensors, etc for all four corners. Is it worth it for everyday driving...I doubt it...but if racing is your thing, and you are not a "pro"...some extra braking is not a bad thing!
Best deal is the big red/GTS front upgrade kit.....this would be my minimum for a 928 supercar!
BTW, those of you who have braking problems on the street, check to see if your rotors are on correctly....left on left, right on right. Otherwise, the airflow is reversed and cooling is lost.
Marc
DEVEK
In general, novices at the track will toast the brakes a few times before learning how to "use" the brakes... I have seen, and been in 928s, where the driver overheated the system and caused a brake failure....but that is a driver issue, not a brake issue.
DEVEK Cup level brake kits come with calipers, factory rotors, brake lines, brake pads, all machining, bolts, washers,sensors, etc for all four corners. Is it worth it for everyday driving...I doubt it...but if racing is your thing, and you are not a "pro"...some extra braking is not a bad thing!
Best deal is the big red/GTS front upgrade kit.....this would be my minimum for a 928 supercar!
BTW, those of you who have braking problems on the street, check to see if your rotors are on correctly....left on left, right on right. Otherwise, the airflow is reversed and cooling is lost.
Marc
DEVEK
11-09-2004, 08:06 PM
#33
Addict
Rennlist Member
Rennlist Member
I think it's a relative bargain to upgrade 928S4 brakes to 993TT's. To upgrade other cars (Audi, BMW, Corvette, NSX) from their brake setups to Porsche big reds costs $2500 for fronts alone and $5k for fronts and rears. Plus with our cars, you can sell the S4 front calipers to 944 guys looking to upgrade to 944 turbo S specs.
Yes, you may never use big reds to their full capacity, even at the track. Big reds can still be useful though, because on the street, it's important pimp your ride.
I learned this any many other things from MTV. PBS sucks in comparison.
Rich - Yep, there are several track days available at Laguna & Sears in December. I'm going to try and make at least 4-5 of them.
Yes, you may never use big reds to their full capacity, even at the track. Big reds can still be useful though, because on the street, it's important pimp your ride.
I learned this any many other things from MTV. PBS sucks in comparison.Rich - Yep, there are several track days available at Laguna & Sears in December. I'm going to try and make at least 4-5 of them.
11-09-2004, 08:09 PM
#34
Rennlist Member
Absolutely! and I agree after driving a car with the big brakes, how nice it feels, you can almost be "careless". and, in a race condition, you can modulate a little better as well. So, this is a nice feeling to have, probably as it is also nice to have all the extra HP of a stroker or supercharger even though most dont use that. (but i would bet most can, at least a little more often)
But, i think its always better to spend the cash to go faster (driver and engine) and then, with the extra cash, step up to those big brakes!!
Mk
But, i think its always better to spend the cash to go faster (driver and engine) and then, with the extra cash, step up to those big brakes!!
Mk
Originally Posted by marc@DEVEK
"how" you brake, how often and what amount of energy are you trying ti dissapate are the key factors in determining your braking needs. Also important is feel under threshold braking...on the verge of ABS engagement. Larger swept areas and brake torque will allow better modulation at these limits.
In general, novices at the track will toast the brakes a few times before learning how to "use" the brakes... I have seen, and been in 928s, where the driver overheated the system and caused a brake failure....but that is a driver issue, not a brake issue.
DEVEK Cup level brake kits come with calipers, factory rotors, brake lines, brake pads, all machining, bolts, washers,sensors, etc for all four corners. Is it worth it for everyday driving...I doubt it...but if racing is your thing, and you are not a "pro"...some extra braking is not a bad thing!
Best deal is the big red/GTS front upgrade kit.....this would be my minimum for a 928 supercar!
BTW, those of you who have braking problems on the street, check to see if your rotors are on correctly....left on left, right on right. Otherwise, the airflow is reversed and cooling is lost.
Marc
DEVEK
In general, novices at the track will toast the brakes a few times before learning how to "use" the brakes... I have seen, and been in 928s, where the driver overheated the system and caused a brake failure....but that is a driver issue, not a brake issue.
DEVEK Cup level brake kits come with calipers, factory rotors, brake lines, brake pads, all machining, bolts, washers,sensors, etc for all four corners. Is it worth it for everyday driving...I doubt it...but if racing is your thing, and you are not a "pro"...some extra braking is not a bad thing!
Best deal is the big red/GTS front upgrade kit.....this would be my minimum for a 928 supercar!
BTW, those of you who have braking problems on the street, check to see if your rotors are on correctly....left on left, right on right. Otherwise, the airflow is reversed and cooling is lost.
Marc
DEVEK
11-09-2004, 08:39 PM
#35
Addict
Rennlist Member
Rennlist
Site Sponsor
Rennlist Member
Rennlist
Site Sponsor
"In general, novices at the track will toast the brakes a few times before learning how to "use" the brakes" ...""how" you brake" . Perhaps both topics are worthy of more elaboration ? It is one thing to state that they do it wrong but farmore beneficial state how to do it right.
11-09-2004, 10:03 PM
#36
Burning Brakes
Now that you bring a SC into the picture, I would do the front GTS/Big Red change. I modded my 951 with a bunch of extra power and took it to the track with essentially stock brakes. That was very hard on them, and me as the driver. I think Mark K makes a great point about having to repeatedly scrub off extra speed. That is precisely why I upgraded my 928 brakes before the car ever hit the track. I feel like it was about best $1000 I ever spent on the car.
Now if you never plan to put it on the track, I would swing the other way and say it probably isn't worth the money. I really like the Eibach/Bilstien suspension upgrade. I think it would be high on my list if I was going to SC my car. I also think that a custom offset set of wheels is a great upgrade. Jim B makes a very good point about the grip of the tires being a limiting factor. I spent a bunch on wheels to get a 255 section front tire on the car. That is three sizes up from stock and it makes a huge difference. See....now I am starting to ramble about how well I think I set my own car up
When Marc starts mentioning his "928 supercar" I feel like I may be just one step shy....the SC. My ultimate 928 includes the GTS brakes, stiffer suspenders, big wheels and tires and a SC kit. Of course, everytime I drive it I wonder what I would do with MORE power than the car already has 
Now if you never plan to put it on the track, I would swing the other way and say it probably isn't worth the money. I really like the Eibach/Bilstien suspension upgrade. I think it would be high on my list if I was going to SC my car. I also think that a custom offset set of wheels is a great upgrade. Jim B makes a very good point about the grip of the tires being a limiting factor. I spent a bunch on wheels to get a 255 section front tire on the car. That is three sizes up from stock and it makes a huge difference. See....now I am starting to ramble about how well I think I set my own car up
When Marc starts mentioning his "928 supercar" I feel like I may be just one step shy....the SC. My ultimate 928 includes the GTS brakes, stiffer suspenders, big wheels and tires and a SC kit. Of course, everytime I drive it I wonder what I would do with MORE power than the car already has