my 24v build, slightly different than the norm. Now with dyno numbers!

[2mAn]

just got word that my pistons have arrived! i dont know what to say anymore haha...

also found this link to help with the OBD1 conversion, figured Id leave it here in case anyone else wants to do the same.

http://m3forum.net/m3forum/showthread.php?t=130494

[2mAn]

block is almost complete. one hurdle after another, but its almost done...

pistons by 2mAn

piston_plus_rod by 2mAn

block_almost_assembled by 2mAn

I should finally be moving the block back to KD Motorsports next tuesday and then its time for final assembly

[Mr.SWISS]

Hope the head bolts hold torque when you bolt the head back on!!

[2mAn]

the mechanic I bought the motor from is installing timecerts (sp?) before we put it all back together

[slammin.e28]

the mechanic I bought the motor from is installing timecerts (sp?) before we put it all back together

Good move.

I'm going to watch this. I'm gearing up to build an M52 sometime.

[2mAn]

finally all done from the machine shop and now its at KD Motorsports. Kevin should be installing the timecerts and installing the head soon. Im hoping he does it before the weekend so I can go there on Saturday and start installing shit on the block. but here is some true money shots...

the head you've already seen, but now its out of my bedroom and at the shop with everything else...

cylinderhead ready to go1 by 2mAn

cylinderhead ready to go2 by 2mAn

and now the block. Im a big fan of freshness like this
block finished1 by 2mAn

block finished2 by 2mAn

block finished3 by 2mAn

he also cleaned up the other parts...

clean parts1 by 2mAn

I think the motor must have been converted to OBD1 already because I saw this conversion piece for sale from TMS. glad I didnt buy it.

clean parts2 by 2mAn

I also got my G260 flywheel shaved and ready. Machine Shop said it weighs 14lbs. I am happy with it. Was also balanced with the factory Sachs clutch/ pressure plate. The clutch might not handle the power, but we'll find out. Didnt want to deviate too much from OEM stuff. I can always upgrade later.

machined flywheel1 by 2mAn

machined flywheel2 by 2mAn

I've got about two weeks to get the long block assembled and installed into my E30. Moving from Seattle to Orange County and want to take the car with me. I can have the wiring completed down there, if not then I will be leaving it up in Seattle and have KD Motorsports finish it all for me, but then I have to drive 1200 miles with a fresh motor and I dont think thats a smart move.

I also picked up another brand new C101. I bought the round one thinking my 84 had already been converted but I found that it just had an adapter, so I bought an early C101 since I want it to be plug and play. No soldering, just freshly crimped OEM goodness. fun stuff!!

c101s by 2mAn

I cant wait to be driving this thing, should be so much fun

[nrubenstein]

FYI, the M54B30 failure mode is actually shearing off the oil pump gear. Not unwinding the nut.

[2mAn]

guys, I have ZERO interest in the M54, this is my M52 build. Take all that shit somewhere else, please...

[JCarp90]

I like shiny bottom ends.

[Mr.SWISS]

guys, I have ZERO interest in the M54, this is my M52 build. Take all that shit somewhere else, please...

You are building an M52 "TU" which is essentially an M54 without forged crank and some update bits.

Had you gone with an M52B28 or an S52B32 your budget would be thanking you and so would your right foot. And you factor out that crappy aluminium block that hates getting hot and despises harmonics.

[Coyote_ar]

No actually thats a regular alu M52. same block as the Euro M52s.
You cant tell its not a M52TU/M54, because the head is the same of regular M52s, and not the reverse flow from the otherones.

References to M54, became irrelevant when he decided to stay at 2.8L.

Oh, and BTW, the alu block is not crappy at all. You just need to run the proper thermostat. When BMW started using alu blocks, they also chose to raise the operating temperature of the engines, to improve emissions. This makes the engines more prone to overheating and warping. And even then, its the head and not the block that gets most of the damage. Aluminium has a better thermal conductivity, so it stays cooler easier than iron blocks. It just need the coolant at a proper temp. Change that thermostat from the original 105c, to 85c, and you wont have temp issues again.

The only real weak point in the alu blocks, its the threads for the head bolts. Studs there is a must.

Even the issue with the nikasil liners can be solved by using steel liners like the later M52TU or M54 (allthough in this case since its from a Z3, it should have the alusil liners so that should be fine).

[wazzu70]

No actually thats a regular alu M52. same block as the Euro M52s.
You cant tell its not a M52TU/M54, because the head is the same of regular M52s, and not the reverse flow from the otherones.

References to M54, became irrelevant when he decided to stay at 2.8L.

Oh, and BTW, the alu block is not crappy at all. You just need to run the proper thermostat. When BMW started using alu blocks, they also chose to raise the operating temperature of the engines, to improve emissions. This makes the engines more prone to overheating and warping. And even then, its the head and not the block that gets most of the damage. Aluminium has a better thermal conductivity, so it stays cooler easier than iron blocks. It just need the coolant at a proper temp. Change that thermostat from the original 105c, to 85c, and you wont have temp issues again.

The only real weak point in the alu blocks, its the threads for the head bolts. Studs there is a must.

Even the issue with the nikasil liners can be solved by using steel liners like the later M52TU or M54 (allthough in this case since its from a Z3, it should have the alusil liners so that should be fine).

Truth.

I hate when people spread bogus info on the aluminum blocks. Most negativity is based on if the blocks were exactly the same with one being aluminum and one being iron. This is not the case. The aluminum blocks have a lot more reinforcement webbing than the iron blocks. They also have the tie-ins from the mains to the outer edge of the block. These act like a main girdle to reinforce the bottom end.

[2mAn]

Truth.

I hate when people spread bogus info on the aluminum blocks. Most negativity is based on if the blocks were exactly the same with one being aluminum and one being iron. This is not the case. The aluminum blocks have a lot more reinforcement webbing than the iron blocks. They also have the tie-ins from the mains to the outer edge of the block. These act like a main girdle to reinforce the bottom end.

I saw those and thought it was just something that the 24v motors have. I think you can see it in some of the pics of the bottom end

[Mr.SWISS]

No actually thats a regular alu M52. same block as the Euro M52s.

Ahh I see, The rare 97 Z3 2.8 block.

[wazzu70]

I saw those and thought it was just something that the 24v motors have. I think you can see it in some of the pics of the bottom end

Not all 24v blocks have those reinforcements.

Is the KD motorsports shop you are mentioning Mr. Doyle? I don't know what he calls his shop...but the initials are correct :)