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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Thu, Aug-15-2019, 09:19:46 PM   #1
GrillMaster
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Default Radiator - Stock Dimensions and Bigger Core?

Hello All,

I have no more room to spare and I want to get a radiator with the stock dimensions (23.6" x 33.1" x 4.3") and better cooling. It is really the 4.3 that I can not go over, however, I want better cooling so I need a bigger core INSIDE the radiator.

Any quick suggestions, or even a good resource to find one? Thank you all.

-Phil
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Old Thu, Aug-15-2019, 09:42:19 PM   #2
Nate047
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Default Re: Radiator - Stock Dimensions and Bigger Core?

Z3M rad is a 3-core, direct fit OEM option. I'm also pretty sure Zionsville has options that are OEM fit, with a higher price.
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Old Thu, Aug-15-2019, 09:55:08 PM   #3
GrillMaster
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Default Re: Radiator - Stock Dimensions and Bigger Core?

Thank you! That sounds like a great swap. I have an S50 supercharged app and that pulley is too close with the electric fan on the back of the radiator. I will let you know. Thanks again!
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Old Thu, Aug-15-2019, 10:43:22 PM   #4
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Default Re: Radiator - Stock Dimensions and Bigger Core?

Also depends on what electric fan you are running, the number of ribs on the crank pulley and the diameter of the crank pulley. The spa mid level is 2.625 thick at the motor and much less at the circumference. I ran one years ago with the Z3 S54M radiator and an 8 rib 6.00” crank pulley while the car was supercharged. I moved the radiator forward about 3/8” little by making new L shaped upper brackets and grinding out the lower ones.
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Discussing Radiator - Stock Dimensions and Bigger Core? in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)