M30 Turbo engine build

[DirtyDozen]

very nice

[grsmonkey]

What compression ratio with the pistons and b35 head?

[e30 gangsta]

Otis, the total seal rings, is there a particular reason why you went with the top ring instead of the secondary ring? Is there any kind of particular benefit in chosing the top ring over the secondary ring, when using those total seal rings?

[the imitator]

Right on!! My m90 block is sitting on the side, I totally have the intentions in punching it out further as you did. Any personal tips or tricks to file fitting rings?

Thanks man, you're a major contributor to the m30 crowd.

[kamotors]

whats your opinion on the "race" bearings? worth the extra money? I'm still deciding between OEM of those for my build.

[Good & Tight]

yay

did you use oem bottom end bearings or those "race" coated ones that places like vac sell.

OEM bearings for the mains and I have clevite rod bearings.

[MPLFoster]

Proper work.

Sub'd

[kamotors]

yay

did you use oem bottom end bearings or those "race" coated ones that places like vac sell.

[LJ851]

Oh, Yes !

[e30m3s54turbo]

Sub'd!

[kronus]

this will be a beast.

the counterweight balance drilling on M30 cranks has always baffled me.

[Good & Tight]

Alright, I'm finally starting to out together a built M30 engine. So might as well document the whole deal. I've had the parts for 5 years and if your asking why so long, well the junk yard engine hasn't blown up yet.!

Here's the laundry list:
M90 block-line honed-bored-decked
B35 Head
Cam to be determined
86mm B35 crank
94mm JE pistons w/total seal gapless top rings
PPM 144mm rods
Custom Twin Scroll manifold by me and intake
Borg Warner SX300 91/79

Here's me after priming the block.


ARP Main studs, FYI when installing main studs the mains need to be checked for roundness as more clamping load can make them out of round. Thanks to John from WOT "Forcedfirebird" for teaching me this as the mains needed a line hone.
Thanks John..!!!
As a side note, the block was line honed with the stock bolts but needed it again with the ARP's.








Crank in place, studs torqued and thrust bearing seated.



I'll add pics as it progresses. Next on the list is to file fit the rings.