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dkbautosports.com
 
962porsche's Avatar
 
Join Date: Feb 2009
Location: branford ct
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finely got it done









after being sick and in and out of the hospital this summer i finely got the BMW E30 done for the customer to get to the track test day. the test day went great with out any problems at all . i have to do more chassis setup with a shock and spring change to the rear .
i swapped in a BMW M50 motor moved the firewall , motor,trans and driver back in the chassis 10.25" and dropped the motor down 1.75" in the chassis . the front of the motor now sits at the front axle center line . this moved all the weight between the axles with little to no over hung weight to speak of . the car scales in at 2134 LBS wet with out a driver .
the car is raced in SCCA class ITEZ the body is so banged up from the 5 past chump events it has been in .
over the winter break i will deal with the wiring and a few other detail things . but the car is good to go for the next few events before the season is over .
Old 10-11-2017, 11:26 AM
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Wow. A lot of work went in to this. Looks great. Thanks for sharing.
Old 10-12-2017, 08:35 AM
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Cool! This is similar to my build of a e30 M3. But....I went 4 cyl 1.8 ltr turbo!

e30 M342t Evolution
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1989 BMW M3 M42 1.8 Turbo Race Car
Old 10-12-2017, 09:40 AM
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Glad you are feeling better - that car looks like fun.
Old 10-13-2017, 11:43 AM
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Quote:
Originally Posted by Damon in STL View Post
Cool! This is similar to my build of a e30 M3. But....I went 4 cyl 1.8 ltr turbo!

e30 M342t Evolution
nice build
Old 10-16-2017, 04:24 AM
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the reason i cut the hole center tunnel out all as one piece with the peddle mounts was not to have to fabricate new mountings for the trans , center driver shaft baring mount , and peddles .
i would have liked to move every thing back in the chassis .75" this would have made it a 100% perfect 50/50 balance . the reason why i couldn't was the rear seat pan is in the way . the car owner and i did not want to install a fuel cell . there is no good place to install a cell in the car . the stock fuel tank sits low and infront of the rear axle line and there would be no easy way to replace it in that area .
i did run into the same problems with a standard M50 swap into the E30 chassis as the brake booster hit the intake . i used a prosche brake booster and master and that saved me some room so even though i did have to roll the motor to the right more it only had to be rolled about 8 degrees .
we are taking the car up to palmer motorsports park for another test day tomorrow .
this will be our 3rd test day for the car and so far not any problems . a rear shock and spring change did fix the handling .
Old 10-16-2017, 04:48 AM
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Wow, looks like a lot of work, but awesome!
Old 10-16-2017, 06:22 AM
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we took the car to the test day at palmer yesterday every thing was going great the car was turning some very very good lap times and is fast as hell . the car owner went out in it for the 3rd run of the day and came back into the pits after 2 3rds of the run with the car not shifting . couldn't find any gears but 3rd gear .
turns out the bimmerworld short shift kit has a bolt that holds a part of the shift linkage together snapped off . what a POS kit that is !
this kit is new and in no way should it break a bolt off . they should weld the thing or maybe use a high class of bolts .
bimmerworld will send us a new kit and we will go do another test and tune day with SCDA at lime rock on the 28th .
Old 10-18-2017, 02:40 AM
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Bummer on the bolt snapping. It is no fun when a low cost part causes missed track time!

I had the same issue with the fuel tank location during my build. I actually cut out the rear seat support area thinking I'd make a fuel cell work there. With the available sizes aftermarket sizes, it would have to be mounted pretty high to clear the drive shaft. I ended up going back to the stock tank configuration.

What trans is in this car?
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Old 10-18-2017, 09:30 AM
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we used the stock e30 trans from the car and a rear diff from a e30 convertible for the LSD .

the stock fuel tank is ok . we don't like that when it gets down to 1/8 tank of so the fuel pickup doesn't pick up the fuel in corners . i'm going to take another new fuel tank and cut some of the top out of it to gain access to the inside and make a baffle then pack the rest with fuel cell foam .
this will do two things . the 1st keep fuel around the pickup and 2nd the foam to stop 6.3 LBS a Gal. of fuel sloshing back and forth.
this will make the car feel more stable . you can feel the difference if you just take a fuel tank and put a few Gal's of fuel in it holding it in your hands and tip the tank back and forth .
i did do the rear camber adjusters for the rear control arms last season when we were doing the chump events .
Old 10-18-2017, 04:02 PM
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