Head volume

[Addissimo]

Does anybody have access to the head volumes for the m50 and s50 engines. I think they're the same head casting, but i'm not positive.

I need the "combustion chamber" volume of the head to calculate CR of my 3.1.

Thanks
-Addis

[Ferret]

I havn't seen the combustion chamber volume published anywhere, but it can be calculated if you know the original bore, stroke, head gasket thickness and compression ratio.

Avner.

[02stu]

If your just measureing the volume of the head you can use the same method people use when they modify a compostion chamber. Use a peice of plexiglass with a hole in the middle and lay it over the bottom of the head, with the head upside down. Then use a syringe and see how much water it takes to fill the combustion chamber.

[325Projectz]

Thats old school style right there.

BMW has to have it published somewhere. Call a piston company, I'm sure they could tell you.

[joshh]

http://forums.corner-carvers.com/archive/index.php/t-18311.html

Here's how to do it with the plexiglass. Looks pretty simple but you still don't have the S50 volume....

[Addissimo]

http://forums.corner-carvers.com/arc...p/t-18311.html

Here's how to do it with the plexiglass. Looks pretty simple but you still don't have the S50 volume....

thanks for the website...

I was in hope that I wouldn't have to do it... but I might as well, damnit. I'll let you know what I find.

-Addis

[02stu]

Calling a piston company is a good idea, thats probley your best bet.

[joshh]

Woh woh, I can call my head rebuilder. He might know. I'll get back here tomorrow about it.