CR ratio with B35 head?

rs4pro3 · Post by **rs4pro3** » Mar 20, 2005 8:41 PM

What ruffly will the CR ratio end up being with sticking a 89 735i B35 head on a 84 633csi block with the Flat top Pistons?

T_C_D · Post by **T_C_D** » Mar 20, 2005 8:46 PM

8.25:1

rs4pro3 · Post by **rs4pro3** » Mar 20, 2005 8:48 PM

Thank you todd, for questions sake what is it with the 3.4 535i pistons?(those are dished correct)

T_C_D · Post by **T_C_D** » Mar 20, 2005 11:02 PM

7.5:1

rs4pro3 · Post by **rs4pro3** » Mar 21, 2005 6:10 AM

Awsome, Glad I at least have the flat top pistons

I don't have the cost to turbo the engine now. And 8.25:1 is at least streetable

Walt · Post by **Walt** » Mar 21, 2005 1:45 PM

Todd;
What would it be on a B34 block w/ 10:1 pistons, please?

Walt
and can you be a little less verbose?

T_C_D · Post by **T_C_D** » Mar 21, 2005 1:52 PM

9.5:1

You guys seeing the trend here?

dasMafia · Post by **dasMafia** » Mar 21, 2005 1:52 PM

do all the B32s have flat-tops..... I'm not remembering at the moment... say, an 83 533i 5-spd.....

dworthy · Post by **dworthy** » Mar 21, 2005 1:53 PM

The 10:1 would be what I have in the beast..... the euro motor

shifty · Post by **shifty** » Mar 21, 2005 4:41 PM

[QUOTE="TCD"]You guys seeing the trend here?[/QUOTE]

Kind of, but what would be the CR if I put the B35 head on my eta?

rs4pro3 · Post by **rs4pro3** » Mar 21, 2005 5:04 PM

0.0:1

Post by **Shawn D.** » Mar 22, 2005 7:55 AM

[QUOTE="rs4pro3"]0.0:1[/QUOTE]

It would create an absolute vacuum? ~0

rs4pro3 · Post by **rs4pro3** » Mar 22, 2005 8:39 AM

oh ya dang got me there 1.0:1 (or what ever it is) then :p Slap it on Shifty and let us know how it goes

shifty · Post by **shifty** » Mar 22, 2005 6:09 PM

[QUOTE="Shawn D."]It would create an absolute vacuum? ~0 [/QUOTE]

Wouldn't that be kinda like a black hole and suck everything surrounding it into the engine?

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CR ratio with B35 head?