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Weight penalty (archive)

[ Follow Ups ] [ E30 M3 Message Board ] [ Msg. Board FAQ ]

Posted by Austin on February 28, 2001 at 18:54:21:

In Reply to: Re: Modification questions posted by Jeff J. on February 28, 2001 at 18:33:29:

Keep in mind also if you're thinking about big brakes that unless you get some trick aluminum calipers and a 2-pc. rotor with an aluminum hat you're going to add a lot of weight right where you don't want it - unsprung. Are any of the aftermarket 12 or 13" rotor setups out there as light or lighter than the stock brakes? Anyway, something to consider.

As far as exhaust goes, I also recommend Stromung. If you really want the look of DTM tips, go with SuperSprint. As far as performance goes, both TC Kline Racing and Korman recommend the Stromung for street and track. It is just such an excellent exhaust; I couldnít recommend it more.

For camber correction, make sure you at least get offset lower control arm bushings and maybe the BMW camber correcting upper strut tower mounts. If you want even more negative camber, you can go with a good adjustable strut mount.

As far as brakes go, everyone has always said that the stock rotors (with the Evo 3 front rotors) are really the best overall. I am very interested in the Brembo brakes though. Remember, you will need 17 inch wheels to clear the massive caliper and rotor of the Brembo kit.

I have been looking at Korman rebuilds too, and am really starting to think about buying my 2.5L stuff from Turner instead. Korman is just so expensive for what you get (about $8600 for the crummy Stage 1 and $12800 for the Stage 2). Their stage 2 rebuild produces about 240hp, but if you spend like half that much on Turner stuff, you would be pushing more like 280hp. The ERT supercharger is an interesting idea, but it seems most people prefer naturally aspirated E30 M3s. On an engine like the S14, itís probably best to go the N/A route.


I have more than 1 question so here goes

1) exhaust- How many of you have the stromung exhaust? What are your opinions? I have past experience with Borla and was pleased overall but would like to put the best tuned piece on the M3. I have also seen mention of the SSprint and have researched it a bit but am curious to know more. ( I would be interested in Dyno numbers as well as actual street usage)

2) Shock mount/Strut braces relplacement & additions- Which are the best aftermarket and what are the experiences with these? I intend put harder shocks/struts in the car and want to avoid changing the entire assembly every time (I have a complete Dinan rear subframe in the car, from when Dinan still offered it as an assembly)

3) Caster/Camber correction- recomendations please!!

4) larger brake set-up -what do you think of the Brembo kit and please give me opionions about slotted vs cross drilled. Also if anyone has experience with the rotor wear with the aftermarket and give me comparisons to the factory (which I have heard are notorious for warping and not being able to be turned!?!)

I know its alot but I have consentrated on the motor (2.5 stage 1 Kormann) and am looking at the ERT supercharger kit. so I need input on the "other stuff"

Marc
88 M3






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