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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 Sat, Aug-14-2010, 05:23:16 PM   #11
KBuva06
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what type of chopper is it
is your tail # 166M3???
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Old Sat, Aug-14-2010, 09:17:11 PM   #12
Richardsperry
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Originally Posted by Supered Ehm View Post
engine work too (i.e. thicker headgasket, rods, rings)




It's even worse with ZKWs...
Nope stock internals.

Makes no difference what headlight you have. The aftercooler is behind the sc head.
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Old Sat, Aug-14-2010, 09:29:46 PM   #13
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Nope stock internals.

Makes no difference what headlight you have. The aftercooler is behind the sc head.
So you're saying you can safely run more than 5-6 psi on stock internals??? That would make me very uneasy. I know two people (one who turboed and one who s/c) and were pushing between 10-15 psi and both ended up blowing their engines (one the headgasket and the other bent a rod).
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Old Sun, Aug-15-2010, 12:10:53 AM   #14
Richardsperry
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It's pretty safe up to 9 psi (that's what I'm running, 3.33" sc pulley, 38#/hr injectors, 3.5" hfm, Aquamist 1S, and a AA tune.) With a good tune and alcohol/water injection. They blew out a hg because they were boosting more than 9. 10-15 is just stupid.
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Old Sun, Aug-15-2010, 01:07:50 AM   #15
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Originally Posted by Richardsperry View Post
It's pretty safe up to 9 psi (that's what I'm running, 3.33" sc pulley, 38#/hr injectors, 3.5" hfm, Aquamist 1S, and a AA tune.) With a good tune and alcohol/water injection. They blew out a hg because they were boosting more than 9. 10-15 is just stupid.
what kind rwhp do you put down with that setup?
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Old Sun, Aug-15-2010, 02:14:11 AM   #16
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Just over 300 on a DynoDynamics. Probably about 320 on a Dynojet.
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Old Sun, Aug-15-2010, 02:52:47 AM   #17
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Originally Posted by Supered Ehm View Post
So you're saying you can safely run more than 5-6 psi on stock internals??? That would make me very uneasy. I know two people (one who turboed and one who s/c) and were pushing between 10-15 psi and both ended up blowing their engines (one the headgasket and the other bent a rod).
With a centri SC, you can easily run 10-12 psi (370-425 whp) on OE HG and internals - IF you are charge-cooled and running a proper tune. 10-12 psi is pretty much standard issue for your basic charge-cooled stage 2 SC kit.

The rods are generally good up to at least 550 wheel.
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Old Sun, Aug-15-2010, 03:40:50 AM   #18
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With a centri SC, you can easily run 10-12 psi (370-425 whp) on OE HG and internals - IF you are charge-cooled and running a proper tune. 10-12 psi is pretty much standard issue for your basic charge-cooled stage 2 SC kit.

The rods are generally good up to at least 550 wheel.
Wow didn't know that...so I could run a stage 2 setup without having to do engine work?
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Old Sun, Aug-15-2010, 11:58:17 AM   #19
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AA sells stage II supercharger kits running 12-13 psi for use with the stock headgasket. The centrifugal supercharger makes very little midrange boost so the cylinder pressure is not so dangerous. With a stage II turbo, all 12-13 psi would be there in the midrange so a thicker HG to reduce compression (or lower CR pistons) is used. As stated above, people have used stock rods in 600 rwhp engines making over 500 lbs rwtq.
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Old Sun, Aug-15-2010, 12:03:59 PM   #20
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Originally Posted by Supered Ehm View Post
engine work too (i.e. thicker headgasket, rods, rings)
I used a 0.098 HG to reduce CR from 10.5:1 to about 9.8:1. Again, stock pistons, rings and rods are find. I have since changed to a turbo for more power. I changed the HG from the 0.098 to a 0.140 to drop CR to about 8.9:1 for the turbo since full boost will arrive by 4000 rpm instead of only at redline with the centrifugal supercharger.
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Discussing E36 VF Kit, Vortech Charger, Intercooler kit coming! 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)