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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Tracking, Autocrossing, Dragstrip, Driving Techniques > RRT/getBMWparts.com Koni Challenge ST 328i Build Thread



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      04-27-2009, 09:14 PM   #45
bayerischeperformance
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Originally Posted by bmwbadboy View Post
I'd be going to Jersey to watch but got to make a run to Va Tech on Sunday.
I was just curious to see how the e90 would do compared to my spec e30. Good Luck next weekend.
This will be our second trip up to Jersey, last year we had our C-mod car up there.

what kind of times are you running?
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      04-27-2009, 09:17 PM   #46
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      04-27-2009, 09:21 PM   #47
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was timing getting pulled? sorry for the detailed questions, it is REALLY hard for me to find tech on E90 328 that is used at the track....
not to that point. Temps were around 250 if i remember. The sweet spot is right around 200ish or so..

FYI Instead of spending the time to make fitting to for the oil cooler to run up to we got a 335 oil filter housing with fittings on it for the oil cooler. along with a 535 oil cooler since they have a oil cooler that has the surface area almost as large as the radiator. Which is important in the grand am aspects due to ducting restrictions and penalties
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      04-27-2009, 10:30 PM   #48
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not to that point. Temps were around 250 if i remember. The sweet spot is right around 200ish or so..

FYI Instead of spending the time to make fitting to for the oil cooler to run up to we got a 335 oil filter housing with fittings on it for the oil cooler. along with a 535 oil cooler since they have a oil cooler that has the surface area almost as large as the radiator. Which is important in the grand am aspects due to ducting restrictions and penalties
I'll be there to watch...probably Sunday only. (Or what day is best to see the car up close and personal?)
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      04-28-2009, 12:46 PM   #49
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Our race is on Saturday though the car will be out all weekend if you want to take a look at it.
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      05-03-2009, 10:18 AM   #50
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First race was a great success! After Michael qualified the car 19th in ST, he and Barry picked up 7 spots during the race to finish 12th. The #21 328i was the highest placing BMW in ST and ran flawlessly, no mechanical issues at all. What people say about Koni is absolutely true - the car definitely needs some body work now

I will make a new thread about the race weekend shortly, complete with pics and more details about the whole experience.

the fall-line GS e92 m3



Our ST car off in the distance

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      05-03-2009, 02:13 PM   #51
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http://www.e90post.com/forums/showthread.php?t=258098
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      05-04-2009, 12:54 PM   #52
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Did you guys have to do any oil pickup/pan modifications? Since it's a wet sump system, do you have any concerns about oil starvation during sustained high-G turns?
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      05-04-2009, 03:30 PM   #53
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Did you guys have to do any oil pickup/pan modifications? Since it's a wet sump system, do you have any concerns about oil starvation during sustained high-G turns?
so stupid question.... since you run r tires and modified suspension, wouldn't you have uncovered this issue already if it existed? mechanical grip would be similar between your car and the car in this thread?
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      05-04-2009, 03:57 PM   #54
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so stupid question.... since you run r tires and modified suspension, wouldn't you have uncovered this issue already if it existed? mechanical grip would be similar between your car and the car in this thread?
No, I wouldn't. I don't have an oil pressure gauge.

And if there is enough starvation to cause long term issues, but not enough to create immediate problems, I wouldn't uncover anything until later on.
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      05-04-2009, 07:25 PM   #55
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I looked at the oil pan for this car and bmw literally put no baffling in it. We are currently making a custom baffle system to avoid starvation issues
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      05-04-2009, 07:27 PM   #56
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Well once you get it fabbed, I'll be in line to buy one!
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      05-04-2009, 09:03 PM   #57
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Well once you get it fabbed, I'll be in line to buy one!
I've got a 335 oil pan on the way as well to see what the differences are and if they have any baffling
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      05-13-2009, 12:36 PM   #58
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So apparently sometime between one of our practices and the race part of the front strut broke completely stopping it from rebounding correctly and not
Valving correctly. Pretty much making the car ride on the spring alone on that side, making the car very bouncy and harder to handle.

That plus a few little bent rear suspension components slowed us down.

Also we were able to get the rear subframe out of the car in about 20-30 minutes no problems. We will probably add that to our list of things to do after each race and clean things up each time
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      06-01-2009, 11:03 AM   #59
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      06-01-2009, 08:10 PM   #60
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Originally Posted by bayerischeperformance View Post
First race was a great success! After Michael qualified the car 19th in ST, he and Barry picked up 7 spots during the race to finish 12th. The #21 328i was the highest placing BMW in ST and ran flawlessly, no mechanical issues at all. What people say about Koni is absolutely true - the car definitely needs some body work now

I will make a new thread about the race weekend shortly, complete with pics and more details about the whole experience.

the fall-line GS e92 m3



Our ST car off in the distance
Which track is this?
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      06-02-2009, 09:18 AM   #61
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Which track is this?
New Jersey Motorsports Park thunder track



Had an interesting test night at Summit Point last night. Brought the dog, went to register came back and she had locked herself in the truck she had also rolled the window down a little so one of the guys got a coat hanger in to unlock it.

Aside from that testing went really well in prep for Watkins Glen this weekend. Cooling issues have been ironed out and we are getting the suspension tuning better tailored to our needs.
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      06-02-2009, 09:41 AM   #62
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Thanks for posting this. It's always fun to watch these come to life.

Now all we need is for you to start running a 128i in ST as well (blasphemy, I know).
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      06-02-2009, 11:21 AM   #63
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How did you fix the cooling issues? Bigger radiator? Better oil... thing? haha.
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      06-02-2009, 12:24 PM   #64
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New Jersey Motorsports Park thunder track



Had an interesting test night at Summit Point last night. Brought the dog, went to register came back and she had locked herself in the truck she had also rolled the window down a little so one of the guys got a coat hanger in to unlock it.

Aside from that testing went really well in prep for Watkins Glen this weekend. Cooling issues have been ironed out and we are getting the suspension tuning better tailored to our needs.
Awesome, I thought so. I was out on Lightning all this weekend, but Thunderbolt is definitely my favorite. Maybe I'll catch you guys over there some time!
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      06-03-2009, 07:26 PM   #65
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Thanks for posting this. It's always fun to watch these come to life.

Now all we need is for you to start running a 128i in ST as well (blasphemy, I know).
im sure it will happen if someone wants to

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How did you fix the cooling issues? Bigger radiator? Better oil... thing? haha.
We started with running a 535 oil cooler. Plain and simple reason for that is ducting, grand am penalizes for it so the 535 oil cooler has a large surface area, i.e. less ducting needed for better cooling. we run Motul 300v actually have a sponsorship with Motul for this season they are giving us all new fluids for each race. We also went with a new radiator and fan. At Jersey we had issues with temps getting way to high when getting to close to the car in front of us. Did testing monday night and with the new radiator and fan found that driving 2 laps behind one of our spec e30 car at its pace right on its bumper didnt make temps spike at all


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Awesome, I thought so. I was out on Lightning all this weekend, but Thunderbolt is definitely my favorite. Maybe I'll catch you guys over there some time!
A friend of mine is going with us to Watkins Glen for the friday race then will be at Thunder for a race on monday. I've been trying to get his motor in the car and ready for his race all week. Hopefully it runs great
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      06-07-2009, 12:22 PM   #66
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Had a good friday at Watkins. Found out early friday morning that we are down around 30whp from pretty much every other car in our class along with more weight and longer gearing.

Down the straights the mini's, civics, and GTI's really show that extra power but we are able to out brake and out drive them in turns getting on the brakes later and on the throttle sooner.

Met a guy who tunes the mini's that was nice enough to hook up his tool to remove our top speed limiter and mess around with timing.

For those of you that are interested and in the MAR we are planning to setup a tuning weekend and have him come to the shop to do regular tunes on any late model bmw and a day full of custom dyno tunes
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