Can anyone tell me what CR will i get from dropping an SR16VE N1 head on an SR20VE bottom end??

The N1 head is shaved 1mm compared to the sr16ve. N1 is 11.8:1 compared to sr16ve is 11:1, The sr20ve is 10.3:1 CR standard.

What size head gasket is on a standard SR20VE and sr16ve? Will a different size gasket make much difference in CR.

Thinner or thicker?!!

Using a thinner gasket will raise your compression. The thicker gasket will do exactly the opposite.

SR16/20VE (N1 including)
11044-1N500 Cylinder gasket
14035-1N500 Intake gasket
14036-1N500 Exhaust gasket

P12/T30 SR20VE/VET
11044-8H600 Cylinder gasket
14035-8H600 Intake gasket
14036-AW000 Exhaust gasket
14036-8H600 T30 SR20VET Exhaust Gasket (seems to be cheaper than the others)

If I'm not mistaken stock gaskets are 1,6mm.

Ive done a search and find that cometic do head gaskets but i cant seem to find the part that i want. Do they do about .6mm thick gaskets for the sr20ve?

Ya i think sock thickness is 1.6mm, is it safe to go with thinner gasket than stock i was think about 1mm thinner??

Is this the right part, says sr20de VVL ***.

http://cgi.ebay.com/ebaymotors/COMETIC-HEAD-GASKET-91-96-NISSAN-SR20DE-SR20DET-W-VVL_W0QQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247 QQcategoryZ33665QQihZ014QQitemZ330236897489QQrdZ1Q QsspagenameZWD1V

Thickness is .76mm

It's too thin!!!
You don't need to spend money on a upgraded gasket unless you're going turbo.
Use the stock or the 20V one. It's better to be safe than explode...;)

Well the whole idea of getting a thinner gasket is to Raise the CR. How thin can i go stying safe? Considering stock is 1.6mm, how about 1mm? what kind of difference will .6mm make to CR?

Your compression will either way be raised due to the saved N1 head, the longer SR20 rods and the pistons you decide to keep stock or alter. Don't mess with a thinner gasket.

Sometimes facts is better than words...
http://i189.photobucket.com/albums/z174/N1inSight/N1/IMG_5049.jpg
http://i189.photobucket.com/albums/z174/N1inSight/N1/IMG_5051.jpg
http://i189.photobucket.com/albums/z174/N1inSight/N1/IMG_5052.jpg
http://i189.photobucket.com/albums/z174/N1inSight/N1/IMG_5054.jpg
http://i189.photobucket.com/albums/z174/N1inSight/N1/IMG_5055.jpg

How knows the thicker of the VET gasket? i need to get down the CR :rolleyes:

Well the whole idea of getting a thinner gasket is to Raise the CR. How thin can i go stying safe? Considering stock is 1.6mm, how about 1mm? what kind of difference will .6mm make to CR?

As far as I know, a stock head gasket is 1.2 mm, not 1.6 mm. To get half of a point increase in compression ratio, you would have to decrease to from a 1.2 mm gasket to a .8 mm. Honeslty, for reliability I would not go below a 1 mm gasket.

Have you considered flat milling your VE head .040" to mimic the N1 head instead? This would give you the increase in compression ratio you're looking for by decreasing the total combustion chamber volume.

would milling the head be bad if you wanted to run n1 cams at +5 -5?
Heard there were very tight clearances

As far as I know, a stock head gasket is 1.2 mm, not 1.6 mm. To get half of a point increase in compression ratio, you would have to decrease to from a 1.2 mm gasket to a .8 mm. Honeslty, for reliability I would not go below a 1 mm gasket.

Have you considered flat milling your VE head .040" to mimic the N1 head instead? This would give you the increase in compression ratio you're looking for by decreasing the total combustion chamber volume.

Thanks for the info on the stock head gasket. Im already bolting an N1 head on to the bottom SR20VE so i dont know would it be safe to shave head again.

When you half a point do you mean 0.5 or 0.05?!

@ Out of sight, is that a standard VE gasket?

Yeah man it's the standard ve gasket. Check the part number.

If your using a genuine N1 head (or a stock VE head shaved 1mm), do not use anything thinner than a stock head gasket. Reason being that you will lower the head too much, upsetting your cam timing and increasing the level of slack in the timing chain. For this reason you should also use an N1 tensioner as it is a bit longer.

Thanks. Will be using N1 tensioner. Just gonna use sr20ve botton end with stock ve gasket and N1 head, should give me about 11:1.

Thanks for everyones help

what will the CR be if i use DE block, GTiR pistons, and VE head?

thanks.