Blasphemy101's Turbo 24v Build Thread

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Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Mon Jul 06, 2015 6:24 pm

As some of you guys might know, I recently did some serious damage to the bottom end of my M20. It seems to have been related to oil pressure, or maybe even starvation. I don't plan on trying to figure it out any further until I actually have the motor out of the car.

I decided this was as good of a time as any to upgrade to a better platform. Enter the M5x series of motors. I don't believe the S50 or S52 motors provide enough extra performance to justify the "///M tax" I've experienced locally. All the S50/52 motors I've seen locally have been priced $2000-4000, which just seems crazy.

I originally looked for an M52B28, but I wasn't able to find one in any kind of reasonable condition. I wound up finding a M50TUB25 with some extra goodies for a pretty good price, so I went for it. Sure, it's older and has less displacement than the M52B28, but it still has VANOS. That has to count for something, right...?

It isn't pretty (yet), but here it is:
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It came with a 5-speed ZF transmission, which supposedly houses a UUC lightweight flywheel/M5 clutch combo. I haven't pulled them apart to verify this yet, but the flywheel is blue...

I also have 2 ECUs. One is a silver-label 413, and another is a red-label with eBay and Stock chips. Supposedly the eBay chip actually works - 7000rpm limit, EWS delete, etc. I don't think I will need it though, once I step up to some kind of turbo-ready EMS.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby ten2doyle102 » Mon Jul 06, 2015 8:32 pm

Same engine I am running as well. Mine has held up pretty well to the abuse I deal it. LOL! If you want the add a few "m" goodies to it, you could s50 cams and s52 injectors for a little more oomph. That's what I am I running and will eventually get the Turner chip to optimize the setup.

Hopefully everything goes well for you!
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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Mon Jul 06, 2015 8:56 pm

ten2doyle102 wrote:Same engine I am running as well. Mine has held up pretty well to the abuse I deal it. LOL! If you want the add a few "m" goodies to it, you could s50 cams and s52 injectors for a little more oomph. That's what I am I running and will eventually get the Turner chip to optimize the setup.

Hopefully everything goes well for you!


Thanks for the good wishes. This will get the vroom-psh treatment and maybe some S50 cams, if I can find an affordable set. Reliable 300-350whp is the goal.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby Ryki » Mon Jul 06, 2015 10:31 pm

Sounds like a great plan! You'll be able to add another link to your sig, lol.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby M20_fever » Tue Jul 07, 2015 3:01 am

jeeze, Sometimes I feel like I've got the last M20 powered E30 on the planet.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby Ryki » Tue Jul 07, 2015 3:38 am

Nope, my 325is is all original! At least until I get a dogleg 260 and a ITB'd M20 >.>
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Re: Blasphemy101's Turbo 24v Build Thread

Postby ten2doyle102 » Tue Jul 07, 2015 3:55 am

Lol tony! I would have stayed with an m42 or m20, but this m50 came cheap!!!

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Re: Blasphemy101's Turbo 24v Build Thread

Postby Ryki » Tue Jul 07, 2015 7:07 am

You probably got it for a lot less than you can get a M42 for these days, all the 02 projects are taking em!
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Re: Blasphemy101's Turbo 24v Build Thread

Postby Yoshi » Tue Jul 07, 2015 11:41 am

I feel like more people cling to the M42 than the M20 lol. Old tech tony!
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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Tue Jul 07, 2015 1:13 pm

It was a matter of availability for me. I have always thought dropping in an M30 and building a period-correct 911 fighter would be cool.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby M20_fever » Tue Jul 07, 2015 2:00 pm

In like 20 year my m20 will be worth billions.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Tue Jul 07, 2015 5:00 pm

M20_fever wrote:In like 20 year my m20 will be worth billions.


That's the spirit!

Wait, your M20 isn't original ^.^
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Re: Blasphemy101's Turbo 24v Build Thread

Postby 87e30 » Tue Jul 07, 2015 6:35 pm

M20_fever wrote:jeeze, Sometimes I feel like I've got the last M20 powered E30 on the planet.


Hey, 3 out of my 4 e30's are m20 powered! At least until I can find a cheap LS1 and take the m20b27 out of the black 87 2 door.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby Ryki » Wed Jul 08, 2015 12:31 am

I'd considered a E30 Touring with a M30 but I think I'll be getting a Euro E28. I need something to boost though.... What kind of plans do you have to rebuild the engine? New seals and studs along with some cams maybe?
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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Wed Jul 08, 2015 4:25 am

Ryki wrote:I'd considered a E30 Touring with a M30 but I think I'll be getting a Euro E28. I need something to boost though.... What kind of plans do you have to rebuild the engine? New seals and studs along with some cams maybe?


I'm hoping to do most of the exterior seals on the engine. I would also like to check the rod/main bearings for any abnormal/excessive wear. The VANOS is supposedly good, and that's easy enough to work on once the car is up and running.

I'm looking at either having the head/block refinished for a thicker-than-stock MLS gasket, but I'm leaning towards o-ringing the block to run an OEM gasket and keep the high compression ratio. I'm leaning towards a low-boost, fast spool setup, and keeping the compression ratio will allow me to reach my goals at lower boost levels and improve things outside of boost. From what I've read, 10 PSI is the absolute limit for a stock motor. I believe that should be achievable with ARPs and o-rings.

I'll definitely be using ARPs to hold the head down.

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