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Old 11-11-2015, 12:45 PM   #106
jon volk
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Default Re: Turbo LS E36 M3

Just slap gm mls gaskets, Chinese head studs, cam and PAC 1218 springs in. All of which are getting reused from the old motor.
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Old 11-24-2015, 04:17 PM   #107
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Default Re: Turbo LS E36 M3

Suspicions confirmed. Looks like it was just making too much steam for the gen iii rods. Piston number two seems to have had enough side load on it to bind in the bore and the bottom of the piston came apart on the down stroke. All other pistons are perfect. No cracks or chips in the rings/ ring lands from detonation. All the rods seem to have at least some bend to them.

So far it looks like the cam is going to be OK.



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95 M3, forged L33, 7675 CEA, TH400/Gear Vendors
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Old 11-27-2015, 03:07 PM   #108
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Default Re: Turbo LS E36 M3

Sitting around watching car videos at the in laws made me realize that turning shit down isn't in my vocabulary. Looks like I'm going to do forged rods and pistons in the aluminum block. For the cost, it's a worthy investment. I plan on keeping the car for quite a while.

24+ psi here we come.
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95 M3, forged L33, 7675 CEA, TH400/Gear Vendors
[email protected] on pump gas at 3530lbs
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Old 11-27-2015, 03:11 PM   #109
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Default Re: Turbo LS E36 M3

Quote:
Originally Posted by jon volk View Post
Sitting around watching car videos at the in laws made me realize that turning shit down isn't in my vocabulary. Looks like I'm going to do forged rods and pistons in the aluminum block. For the cost, it's a worthy investment. I plan on keeping the car for quite a while.

24+ psi here we come.
Jon,

Sucks about the rods, but I am looking forward to more progress.

Andrew
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Old 11-27-2015, 03:57 PM   #110
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Default Re: Turbo LS E36 M3

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Originally Posted by jon volk View Post
Sitting around watching car videos at the in laws made me realize that turning shit down isn't in my vocabulary. Looks like I'm going to do forged rods and pistons in the aluminum block. For the cost, it's a worthy investment. I plan on keeping the car for quite a while.

24+ psi here we come.
What rods/pistons are you going with?
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Old 11-27-2015, 04:00 PM   #111
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Default Re: Turbo LS E36 M3

Probably Wisecos and K1 rods. By the time a set of eagles are resized they'd likely come in about the same price.
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95 M3, forged L33, 7675 CEA, TH400/Gear Vendors
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Old 11-28-2015, 12:05 PM   #112
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Default Re: Turbo LS E36 M3

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Probably Wisecos and K1 rods. By the time a set of eagles are resized they'd likely come in about the same price.
I am really curious to see how this goes. One my future car build list is some sort of land yacht. I am thinking either a 70 Impala or a 69-72 Grand Prix. The idea is to build a max effort 5.3L with smallish turbos that can take 20psi at 2000-2500 RPM and be done by 5500rpm.

From what I understand it's that kind of low RPM, high cylinder pressure scenario that can be brutal on the rotating assembly. I'd love to hear your thoughts on that...

Andrew
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Old 12-11-2015, 09:42 AM   #113
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Default Re: Turbo LS E36 M3

What an awesome build. Hope to see you at the poconos this coming spring!
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Old 12-11-2015, 09:57 AM   #114
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Default Re: Turbo LS E36 M3

I'm hoping to be out there. I'm glad I missed out on the fall event. I would bent the rods and oiled down the track there instead of I95.

As for building a low rpm torque monster, I think you'd need a serious rotating assembly. The below is a good read on rpm vs boost on stock parts. It makes sense that mine got pretty neat up as I was making highway pulls from 3500, whereas a drag car setup gets up on the converter and hangs 5500-6500 in most of these high boost deals.

https://www.yellowbullet.com/forum/sh...d.php?t=448953
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Old 12-21-2015, 09:44 PM   #115
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I'm actually doing same type of build
But I started with Bare ls2 block, eagle crank, Manley rods with upgraded bolts, wiseco pistons etc
Slapping an f1 procharger on it
Should be around 800whp
Also putting an 8.8 rear in it
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Old 12-23-2015, 04:15 PM   #116
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Default Re: Turbo LS E36 M3

Nice. Look into the e32 diff. It's way less work and has proven to hold 1000+ and 8 second passes.
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95 M3, forged L33, 7675 CEA, TH400/Gear Vendors
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Old 12-24-2015, 09:13 PM   #117
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Actually already have the 8.8 In the bow subframe all finished
Just gotta get axles made and the rear is a wrap
I'll start my own build thread
Trying to see who stuffs a big tire under the back, might try a semi mini tub to fit. 26x11.50x17 tire in the back
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Old 12-25-2015, 05:43 PM   #118
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Default Re: Turbo LS E36 M3

Quote:
Originally Posted by jon volk View Post
I'm hoping to be out there. I'm glad I missed out on the fall event. I would bent the rods and oiled down the track there instead of I95.

As for building a low rpm torque monster, I think you'd need a serious rotating assembly. The below is a good read on rpm vs boost on stock parts. It makes sense that mine got pretty neat up as I was making highway pulls from 3500, whereas a drag car setup gets up on the converter and hangs 5500-6500 in most of these high boost deals.

https://www.yellowbullet.com/forum/sh...d.php?t=448953
Jon,

Thanks for the link. I think I have come across it before.

Surely with the proper rods and pistons a low end torque monster can be made to live. Look at various OEM turbo engines. They all have a torque curve that looks like a dining room table. This is because they use small turbos that run out of steam at the high end. If their rotating assemblies can last, why not a well thought out aftermarket assembly, like the one you are going to put together?

Look at the torque curve of the LTG:

http://www.chevrolet.com/performance...35017_66935003

That's a little 2.0L making 20psi. It's making 250lb/ft at 2000RPM. Just a simple calculation to a 5.3L would put at around 660lb/ft at 2000RPM. I understand there are a ton of different variables, but you get the idea.

Here is a BW MatchBot combo that I was playing around with:

MatchBot

That's using a pair of EFR 6258s...

Thoughts?

Andrew
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Old 01-31-2016, 04:10 PM   #119
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Default Re: Turbo LS E36 M3

Jon,

Any updates?

Andrew
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Old 01-31-2016, 04:52 PM   #120
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Default Re: Turbo LS E36 M3

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Jon,

Any updates?

Andrew
I was actually just about to post one.

Holidays are over and the customer car I was working on is gone, so I'm back onto the M3.

Finished up the cylinder heads. Just cleaned up the surfaces with a white roloc disc, installed new valve seals and swapped in the PAC 1218 springs from the old motor.






Cleaned up the block a bit as well. Pistons should be here Wednesday, then it's off to the machine shop for a bore/hone.



Patched up the oil pan





Since the plug and play harness was installed then I added the rest of the connections, it wasn't as neat as I would have liked. Stripped the loom off, redid a few things, and added in the wiring for the transmission oil sprayer pump. Recovered it and then wrapped it with self fusing silicone tape. Still need to finish it as I underestimated how much I would need.










Bonus pic, the reason I wasn't working on my shitbox

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92 325i Mtech, 4.8 LS, th400.

95 M3, forged L33, 7675 CEA, TH400/Gear Vendors
[email protected] on pump gas at 3530lbs

Last edited by jon volk; 01-31-2016 at 04:55 PM.
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