CTR pistons into B18C7 ITR engine

[euGeR]

This seems like an interesting mod, for the price.

1. Is it true that CTR pistons will give more compression over JDM ITR pistons in a B18C7?

2. If Pistons + rings were purchased, what is the process of getting them installed? a straight exchange or is there any other type of work required?

3. If compression was raised, is aftermarket EMS absolutely necessary? or can Stock computer re-adjust?

4. What would be the speculative bump in compression/gain/ change in torque curve?

(assuming standard ITR cams)

[Jim80y]

I've been reading about this too, but apparently if using these with fairly agressive cams there could be piston/valve clearance issues because of the domed top of the piston. Compression with these on a stock B18C7 is somewhere around 12.2-12.5:1 .

[euGeR]

ahhaha yeah I saw your interest in the FS section
So on stock CAMS should be no probs, but if using anything above a SPEC B - issues.

Wouldn't be much to gain on stock CAMS would there....

[Jim80y]

Not too sure to tell you the truth. Could be some sort of gain but would be most beneficial with some sort of aftermarket programmable engine management.

Keep your mits off the CTR pistons

j/k

[type one]

CTR pistons for $550... i think you could get a set of spoon balanced jdm pistons for less.... if that's all your after...

[Weq]

If u are after a set of pistons and going to the trouble of installing them, defaintly get something stronger and forged. It wont cost u much more, and support more power. Oh yeah, while ur at it, new rods wont go atray

[crx2gen]

Yeah. At the end of the day they are 'just' (and I say that with some caution ) standard pistons.

[wynode]

I'm not sure about getting forgies on an NA setup. There are some bad points about getting forgies Weq

[McChook]

I'm not sure about getting forgies on an NA setup. There are some bad points about getting forgies Weq

Please elaborate

[wynode]

I'm not sure about getting forgies on an NA setup. There are some bad points about getting forgies Weq

Please elaborate

Elsewhere........make a thread and i'll reply.

[euGeR]

I'm not sure about getting forgies on an NA setup. There are some bad points about getting forgies Weq

I don't mind I'd like to know to.

As far as I know, ITR/CTR/toda pistons are forged - providing better strengths for High RPM/compression applications, but then, I am only a hobbyist not an engine builder, so feel free to comment.

[wynode]

Ohh........I didn't know they were forged.....my bad.

But the comment was in relation to Forged pistons requiring to be warmed up, using a bit more oil when cold and also being a bit noisy because of the large piston to bore clearance when cold.