Hot Chocolate Superleggera!

[CoreyZ]

SEVERAL HOURS LATER

[2mAn]

this thread needs updates

[CoreyZ]

I'm a bad person who doesn't post

[CoreyZ]

https://www.youtube.com/watch?v=QWTB62H8vHM

[CoreyZ]

[MyE30]

is this the thing?

[CoreyZ]

A front brake thing. Gotta get these fucking asshole wheel bearings out to start on the rears.

[CoreyZ]

[CoreyZ]

[CoreyZ]

Walking for my graduation this coming Saturday, getting an award for my contributions to the university. Got to do some great research for the Navy and made a lot of great contacts along the way. Soon I'll be able to actually call myself an engineer :D

1900x1080 or get out

Made some progress on the brown car, FINALLY.

M50b25tu pistons (just a vanos M50) in an M52b28 with b28 rods and crank.



Rough measurement of piston to deck of stock M52b28 pistons


Same with M50b25tu pistons



e: Better CR calcs

You can use deck height, piston compression height, head gasket thickness, and cylinder head volume to calculate compression, but I can't find decent measurements. The height of the piston at top of stroke should be 209.55mm, but the deck height for an M52b28 block I saw was 208.XXmm. Not the case as you can see.


Compression ratio = 10.2:1 = swept volume + (Cyl. head volume, HG volume, clearance volume, ect) : (Cyl. head volume, HG volume, clearance volume, ect)

10.2 = (465.5cc + X ) / ( X ) where X is the sum of those hard to measure volumes.

9.2*X = 465.5cc. X ~= 50.598cc.

If those compression heights are accurate (seems reasonable) the reduction in volume is 4.045cc.

50.598-4.045 = 46.552cc

(465.5cc + 46.552cc) / ( 46.552cc ) = 10.99 CR

I didn't measure CH and we're going by BMW's CR, so there still could be issues. Still pretty decent for very little $$ spent!




My brother brought home Thor's Hammer so I could finally bust the crank pulley nut off. Took the rest of the block apart.




Not too bad...





:barf:



Chem-dip to the rescue.

[2mAn]

Bring this car to LA when you move out.

[CoreyZ]

That's the plan, if I end up out there. Things are still prone to change :D

[CoreyZ]

lol

[2mAn]

I'm on tapatalk but that looks like it says 275!?!?

[CoreyZ]

Yep! Z4 hubs on stock e30 TAs. +5mm effectively I think?

There's still room inboard for more tire lol.