I have a b16 block with standard bore CTR pistons. The block will be mated with a b16 head that has no milling done to it. I'm wondering if it would be safe to run a high compression head gasket to get a little more compression out of my setup. I know I should have the motor clayed to be extra sure. I have no idea how much that will cost me. So, two questions: stock or high compression head gasket? and How much does it cost to have a motor clayed?

 

i ran one with a spoon 2 pc headgasket.....b16a, pct's on stock p30 rods. toda b's with lots of timing in the head....no clearance issues at all.

 

sounds good....i don't think i will....but better safe than sorry...

 

take your old stock HG and make it 2 layer, clay the motor yourself and then make your decision.

 

interesting....how do you clay the motor? never done it or seen it done b4

 

http://www.c-speedracing.com/h...y.php

 

Thanks!

 

wat if u don't clay the motor would it still be safe to just to put the pistons in and leave everything else stock? and what would be the most u could prolly rev on stock rods with ctr pistons?

 

the mugen 1 layer head gasket,w/ ctr pistons is a fine combo,no valve clearence issues,thats my own personel setup,and on stock rods i rev 9500,max for my piece of mine,

 

ok cool thanks

 

so you guys are basically concluding that using CTR pistons in a B16a doesnt require any additional headwork? Im wanting to use CTR pistons in my B16, so I figured I would ask.

 

no head work,a simple surface shave about .002th is fine,and if you wanna get serious,just do a angle job and port the head

 

i didn't have any head work on mine. the only thing i had to do is have the rods and the inside of the piston shaved a little bit for the pistons to fit with the pr3 rod. otherwise they are sexy

 

so there is no octane issues with this set up? CTR piston with stock PR3 rods, pretty much stock motor? What is the comp. ratio being that this is a b16 block and not the ctr block (b18 destroked to a 1.6)

 

Ohhh nevermind I found further down in my search. Thanks though!

 

ctr's in a b16 is 10.8 cr
so no you wont have any issues with not having high enough octane gas

 

Would I even have to shave the rods and pistons if i used say gsr or itr rods with the ctr pistons in a b16?? Why is the shaving necessary?

 

I just finished up installing CTR pistons with factory PR3 rods in a jdm b16a.. We used a OEM 3 layer head gasket with this particular motor but there is no clearance problems at all. We did however add a new set of ARP rod bolts to extend the strength and if you haven't had the CTR's pressed onto the oem rods that are in the block, you'll have to have a machine shop mill off 1.5mm's on each side of the rod (3mm total) so it'll fit into the CTR's piston journal properly.. Also I'd advice you putting in a new set of rod bearings and main bearings (if you removed the crank) as well as the main seal once you put the motor back together... CTR's in a B16 should bump compression up to 11:1...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by erics99si &raquo;</TD></TR><TR><TD CLASS="quote"> and if you haven't had the CTR's pressed onto the oem rods that are in the block, you'll have to have a machine shop mill off 1.5mm's on each side of the rod (3mm total) so it'll fit into the CTR's piston journal properly.</TD></TR></TABLE>

So if i use the stock b16 rods ill be ok? What about ctr rods or itr rods?

 

it should work but you want to be safe than sorry

gsr rods
type r rods
eagle rods
rev rods
cp rods i think they make one

here are some examples...

 

nevermind


Modified by likaciv at 7:25 AM 3/23/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 12secDC &raquo;</TD></TR><TR><TD CLASS="quote">it should work but you want to be safe than sorry

gsr rods
type r rods
eagle rods
rev rods
cp rods i think they make one

here are some examples... </TD></TR></TABLE>

Your factory B16 rods will work, though you'll have to have a machine shop mill 1.5mm off each side that connects to the piston.. the stock rods are plenty strong enough, though if you're planning to rev higher than the stock RPM limit, I'd suggest buying a set of ARP Rod Bolts and you'll be good to go.... they'll take 9500 R's all day long...

Not sure if you'd have to mill the GSR, EAGLE, REV RODS, etc.. or not... I'd assume that you would have to mill the GSR rods, prolly not on the Type R rod, and I have no clue on the aftermarket rods...

 

Using this WICKED calculator... http://www.c-speedracing.com/h...c.php

Did I mention this is the best thing invented EVER?

You can see that just dropping in CTR pistons into the B16 will give you:

-OEM 3 layer gasket, 10.8:1 compression
-2 layer gasket, 11.1:1 compression
-1 layer gasket, 11.5:1 compression

Hmmm, I was thinking of getting a B18B block with the PR3 pistons I have now to get the 11.6:1 compression..... But if I can achieve this with the CTR pistons and a thinner head gasket safely on the B16 and keep the good Rod/strock ratio.....I will do this.

I mean, I would feel a lot safer with the B16 block revving up to 9500rpm then with the B18 block.

??

 

I have Eagle H-beam rods w/ CTR pistons. My problem is the eagle rod will not fit in the CTR piston. Then the eagle rods have a full floating wrist pin and the CTR piston have a pressed fit wrist pin. I know i have to mill the rods or pistons so they'll fit. But not sure because the rods is a full floating wrist pin and the CTR piston is a pressed wrist pin!