What size combustion chambers do stock E7s have?

stangboy

Founding Member

Aug 31, 1999

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New Orleans, LA

Apr 13, 2004

#1

• Apr 13, 2004

• #1

I'm trying to figure out if I'm going to have higher compression when I install my AFRs or will it be the same? So, I'm figuring if stock heads have bigger combustion chambers than 61cc then I should expect more compression when I install my AFRs.

BTW, does anybody have any idea what my compression will be when I install my AFRs w/ 61cc chambers? Oh yeah, my shortblock is stock. I'm just gonna be putting in new bearings and rings.

 

Rootus

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Feb 8, 2003

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Apr 13, 2004

#2

• Apr 13, 2004

• #2

I think the stock E7's have 64cc chambers. I wouldn't expect much of a bump in CR, probably still in the low 9's.

 

95snoozer

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Dec 14, 2002

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#3

• Apr 13, 2004

• #3

9.3 ish

 

GTJake

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Apr 13, 2004

#4

• Apr 13, 2004

• #4

I you're putting in new bearings and rings you might as well get some pistons with valve reliefs big enough for those 185's. Then you can run a big enough cam to keep up with them.

Jake

 

stangboy

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#5

• Apr 13, 2004

• #5

GTJake said:

I you're putting in new bearings and rings you might as well get some pistons with valve reliefs big enough for those 185's. Then you can run a big enough cam to keep up with them.

Jake

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i don't have enough money for pistons. Rings only cost like $20 or $30 and bearings cost about the same. Pistons cost in the neighborhood of $300-$400 for some forged ones. I don't have that kinda of extra money.