Blasphemy101's Turbo 24v Build Thread

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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Mon Aug 10, 2015 9:23 pm

So I've ordered some parts... In the meantime, my block turned blue!

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Re: Blasphemy101's Turbo 24v Build Thread

Postby 87e30 » Mon Aug 10, 2015 11:38 pm

It just magically turned blue, huh? Had nothing to do with that can of spray paint sitting on top of it? lol
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Re: Blasphemy101's Turbo 24v Build Thread

Postby Yoshi » Tue Aug 11, 2015 12:04 am

Things no one will ever see! lol
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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Tue Aug 11, 2015 6:24 am

Yeah... I got a little aggressive with my cleaning and took a good portion of the original paint off. It started to flash rust like crazy, so this was my solution. I love the color, but the paint job is terrible, so it might not stay. But like Yoshi said, stuff no one will ever see, especially on a 24v.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby Yoshi » Tue Aug 11, 2015 11:17 am

The heat of the motor will keep it from rusting too much :)
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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Sun Aug 16, 2015 7:51 pm

So I've run into a little bit of a financial hickup. My other project decided to eat its motor last week, so I will not be able to make any money from it. The profit from that project was intended to go into this turbo build, but since that isn't happening, I'm going to have to reconsider my options.

After finally getting my hands on the M42 pistons, I believe they are a viable option. However, I have learned some things along the way that are not common knowledge across the predominant E30 forums. I'll create a post containing my measurements and complete thoughts on using M42 pistons for a low-compression M5x build. Unfortunately, it's looking like I can't afford everything that goes into transferring those pistons into another motor (wrist pins, bushings, bearings, piston rings, etc).

My remaining options are to keep the stock compression, as you guys have suggested, or lower the compression with an MLS gasket. It seems like I am back where I started... I will likely go the stock compression route, since that was my original intention. With a small turbo and low boost, I think I should be able to produce 300whp and a large powerband that will be great for my purposes. After tearing down the M50, I can see that a headgasket replacement to step up to the MLS gasket in the future would not be out of the question. The head is actually easier to remove than the one on the M20.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby Yoshi » Mon Aug 17, 2015 12:50 am

ah that's not so bad man. It'll be ok.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Mon Aug 17, 2015 6:02 am

Yoshi wrote:ah that's not so bad man. It'll be ok.


Yeah, I'm not too worried about it. It's not like it puts me in dire straights financially, it just cut out a big chunk of my budget for this project. I'm also trying to stay away from the possibility of failure with the M42 pistons, considering I will not be able to do serious engine work for a while after this project is done. I graduate in December, and where I'll end up is still kind of up in the air.

I will snap some more pictures of the bores to get your opinions on whether or not I should hone the cylinders. I'm trying to gauge if it is worth the price of the rod bolts and tool. All of the rod bearings are tight by feel, and the one I removed looks fine, but I'm going to plastigage it to see where they're at as well. If I wind up replacing the rod bearings, I may as well do the hone.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Mon Aug 17, 2015 6:12 am

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Some parts arrived, by the way :)

UUC Flywheel friction surface, which I bought during their free-shipping period last weekend, and Condor Speed Shop M5x swap mounts. I think I've mentioned before, the CSS stuff seems kind of pricey for what they are (lathed UHMW), but they're a good product, and I'm not going to find the time to measure everything, order stock material, and DIY it any time soon...

According to Rob at UUC, the friction surface does not need to be balanced. I imagine it's just laser-cut or something from flat stock, so the material should be very consistent and not upset the balance.

Onto another matter. What are your thoughts on using a different clutch disc with the M5 pressure-plate? The GripForce company that makes those FX-Racing clutch kits everyone seems to run on their turbo E36s sells their clutch discs separately at pretty affordable prices ($50-75). Obviously, the clutch wouldn't hold as much torque as if it was paired with a higher load pressure plate, but the change in friction surface would certainly increase capacity some. I'm just not sure how much...

[EDIT] Looks like UUC recommends the stock M5 clutch up to 350hp. They say it could survive 400 ft-lb in a street E30, but life will probably be reduced with sticky track tires and lots of hard driving. Granted, I'm pretty gentle on my driveline for all the auto-x I do.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby Yoshi » Mon Aug 17, 2015 11:12 am

I had fx racing for a bit on one of my builds. Worked fine but I wouldn't put it on anything with over 250whp. Just didn't seem solid. But that's my ramblings and no real facts lol.

Also, those are motor mounts? They look very... symmetrical? I had this convo with IE about their stupid swap mounts. The M50 mount arms are at a different angle than the E30 subframe. AKG now makes angled bushings to make up for it. Everything fits great now. I mean... maybe it works? I'm such a debbie downer.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Mon Aug 17, 2015 6:04 pm

Yoshi wrote:I had fx racing for a bit on one of my builds. Worked fine but I wouldn't put it on anything with over 250whp. Just didn't seem solid. But that's my ramblings and no real facts lol.


Like I said, the E36 turbo guys seem happy with it. From looking at their site, it looks like they just use some Sachs pressure plate, and I'm not convinced they change the pressure plate between the kits. I would only be using the disc itself, though. I'll have to do some research on how people have faired doing it this way. I'll probably wind up just running the M5 disc, but if I find out anything to the contrary, it's cheap "power insurance."

Yoshi wrote:Also, those are motor mounts? They look very... symmetrical? I had this convo with IE about their stupid swap mounts. The M50 mount arms are at a different angle than the E30 subframe. AKG now makes angled bushings to make up for it. Everything fits great now. I mean... maybe it works? I'm such a debbie downer.


They are indeed motor mounts, and they have an angle to them. I didn't even notice it until your post.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Mon Aug 17, 2015 6:22 pm

This is my current list for my parts order. Anything that jumps out at you guys as missing?

Dipstick O-Ring
Head Gasket
Oil Filter Gasket
Oil Pan Gasket
Oil Pickup Gasket
Rear Main Seal
Rod Bearing Set*
Rod Bolts*
Thermostat Gasket
Water Pump O-Ring

*Indicates items that may be removed from list, depending on condition
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Re: Blasphemy101's Turbo 24v Build Thread

Postby Yoshi » Mon Aug 17, 2015 9:19 pm

intake and exhaust gaskets?
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Re: Blasphemy101's Turbo 24v Build Thread

Postby blasphemy101 » Tue Aug 18, 2015 12:29 am

For some reason, I thought intake manifold gaskets were reusable. Oh well, added to the list.

The exhaust manifold gasket will come with the turbo manifold.
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Re: Blasphemy101's Turbo 24v Build Thread

Postby Yoshi » Tue Aug 18, 2015 10:59 am

well you CAN. I never trust POs. I'll reuse after I buy the first new set lol.
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