3.2L m20 Stroker 11.5:1 CR

[SA E30]

Wikkid what crank u running ?

I'm running M52B28... nice solid 2.9lt

[Calvin Tan]

Wikkid what crank u running ?

I'm running M52B28... nice solid 2.9lt

I'm running a MST Wisemann 3.0 stroker kit imported from Germany about 6 years ago. He is the ex-chief engineer of Alpina. I have lots of pics at www.geocities.com/calvintan_e30

[SA E30]

What intake maifold is that ? never seen one... u got one seriously clean E30 there... not to mention the M3.

What power u making ?

I'm made 157kw and 290nm.

I still need to sort out my management (gonna run Domingos) and then get rid of the AFM... and that rubbish. Also wanna work my head, cause it's stock other than the 288cam and port and polish.

[Calvin Tan]

What intake maifold is that ? never seen one... u got one seriously clean E30 there... not to mention the M3.

What power u making ?

I'm made 157kw and 290nm.

I still need to sort out my management (gonna run Domingos) and then get rid of the AFM... and that rubbish. Also wanna work my head, cause it's stock other than the 288cam and port and polish.

It is Dbilas Dynamic six throttle, also imported from Germany.

I made 212rwhp at 5800rpm and 274nm at 5000rpm with 3.64LSD. All this dyno are did before the six throttle. I haven't got any time to do a dyno again. I'm using SMT5i piggy back for the engine management + Superchip with new 7200 rev limit.

Below is the MAF conversion I draw for you and anyone of you is going for this conversion. You will notice there is a air intake temp sensor. Yes, I removed it from the old AFM. Hope it help. This is a big improvement over the AFM.

[SA E30]

Did u find any difference with the throttles ? I've been thinking of doing this aswell... just with M3 throttles... it apparently helps big time with top end power ?

Thanks for the MAF diagram, but I plan to run without a MAF, and let the Management do all the metering.

I'm guessing it's true that u need to have the car re tuned to read the signal from the MAF ?

[Calvin Tan]

Did u find any difference with the throttles ? I've been thinking of doing this aswell... just with M3 throttles... it apparently helps big time with top end power ?

Thanks for the MAF diagram, but I plan to run without a MAF, and let the Management do all the metering.

I'm guessing it's true that u need to have the car re tuned to read the signal from the MAF ?

If you are not using MAF, then you must have the MAP sensor. I have tried to use Japs MAP sensor, but the load signal was reverse. So no choice have to use MAF. Yes, the DBilas thing really improved the power especially high end.

[screamingbmwe30]

jordan is metric mechanic is full of shit?

[SA E30]

Did u find any difference with the throttles ? I've been thinking of doing this aswell... just with M3 throttles... it apparently helps big time with top end power ?

Thanks for the MAF diagram, but I plan to run without a MAF, and let the Management do all the metering.

I'm guessing it's true that u need to have the car re tuned to read the signal from the MAF ?

If you are not using MAF, then you must have the MAP sensor. I have tried to use Japs MAP sensor, but the load signal was reverse. So no choice have to use MAF. Yes, the DBilas thing really improved the power especially high end.

Oh ok, cool but we don't have the problem here, got a mate running GoTech Pro (engine management) and his is running really well... sans MAF/AFM.

The cool thing about that engine management is that it has launch contorol :D

[Calvin Tan]

Did u find any difference with the throttles ? I've been thinking of doing this aswell... just with M3 throttles... it apparently helps big time with top end power ?

Thanks for the MAF diagram, but I plan to run without a MAF, and let the Management do all the metering.

I'm guessing it's true that u need to have the car re tuned to read the signal from the MAF ?

If you are not using MAF, then you must have the MAP sensor. I have tried to use Japs MAP sensor, but the load signal was reverse. So no choice have to use MAF. Yes, the DBilas thing really improved the power especially high end.

Oh ok, cool but we don't have the problem here, got a mate running GoTech Pro (engine management) and his is running really well... sans MAF/AFM.

The cool thing about that engine management is that it has launch contorol :D

His must be a stand alone engine management. You can't do that with a piggy-back if I'm not mistaken. Could you please check with him if he is using 'MAP' sensor (Not MAF). ;)

[SA E30]

I'm actually 100% sure that he is using a MAP sensor, the idle control valve is also gone...

[Calvin Tan]

I'm actually 100% sure that he is using a MAP sensor, the idle control valve is also gone...

piggy-back or stand alone?

[SA E30]

Stand Alone... he's running a Go Tech Pro MFI.

[Calvin Tan]

Stand Alone... he's running a Go Tech Pro MFI.

Earlier I said stand alone system can do it, piggy-back can't.

[whakiewes]

Calvin,

I noticed one thing about your M50 build. The pistons your listed are actually US Spec 3.2L pistons, not euro. There are several differences in the pistons, so if you plan on using a euro crank which I am not sure is even possible, you need to use euro pistons or custom. The pistons you have have the engine code, S52B32 listed on it, as well as the dishing and the compression at 10.5P. The US crank is 89.6mm vs. the Euro at 91mm. Just something I noticed on your pictures reading this thread.

Another point of confusion I see is WHY do people still build M20's? The cost to build one to achieve say 230hp is way outweighed by just building/buying an S50/M50. I would say most of you have 2k easy in you M20's, if not a lot more. You can get an S50 most any day of the week for 2-3k. You would have same, if not more power, and proven reliability. On top of that, the torque from the dual cam, and possibly VANOS engine is by far more than that of the M20. There is a reason why BMW started making the M50!

[Jordan]

CI would say most of you have 2k easy in you M20's, if not a lot more. You can get an S50 most any day of the week for 2-3k. You would have same, if not more power

See, this is where your ignorance shines the brightest.

You aren't going to find a GOOD S50/S52 for 2-3k Anything in that price range is ragged on and high miles. 3-5k for a good engine /w accessories.

The add the tons of assorted parts needed to install in e30 chasis. $1k or so.
Add OBDI conversion for S52 motors. $1k or so.

I've done many of these swaps in the 4 and a half months I've been working at TSA. Most of them come out to right around $12k.