Guess the compression

[Mike]

C14SE head on a E16SE block will result in what CR? How much higher?

[chimp007_uk]

dunno, get a syrienge and measure the volume of water in the 1.4 chamber of the head and see how much in the 1.6... give you a rough idea of increase.

[MC]

Approx 11.3:1

MC

[Adam]

Have you measured that/\ ?

Id say higher than that tbh, the chamber on the 1600 head is very deep compared to a 1400 head.

[MC]

I said approx!

Assuming the piston tops are similar:

Nova GTE 10:1 CR or 1600cc compressed to 160cc

Nova SRi 10:1 CR or 1400cc compressed to 140cc

GTE block and SRi head would be 1580cc (Accounting for 20cc drop in combustion chamber) compressing down to 140cc

1580cc:140cc = 11.286:1

A good rough guide for theoretical engine building.

MC

[lj]

i ran 16v pistons in a 1.6 block with 1.4 se head and had 275+ psi!

[MC]

Compression ratio and compression test are completely different.

You could have a compression ratio of 15:1 but still only read 100psi on a compression test if the piston rings are donald ducked.

Saying that, I would expect that your compression ratio would be silly high with the setup you mention.

MC

[Stuart]

also very much depends on cam spec too....

[MC]

True.

[Stuart]

and to an extent how fast your starter motor spins.

lots and lots of factors in the compresison test vs static CR debate :D

[burgo]

im going to guess 10.844:1 :p

[Mike]

Is that an educated guess Luke? As i could do with knowing so i know what size spacer plate to use lol

[MC]

I told you what the theoretical compression was, what do you want it down too?

MC

[Mike]

Well with the work thats being done to the head now, it should be about 10.5:1

[Adam]

Too high.

If its still being turbo'd.

[Mike]

I know Ad, i want to obtain a standard CR, then add a spacer plate ;)

[Adam]

Ahh right