b18c head

[fatboyz39]

got most of that already minus the block and ecu.. hoping i can run the jdm p30 rom fine.

the bit i wanted clarified was the rods... naturally with internet posts theres misguided info.

the rod part, my researc lead me to believe that:
- Rods are weak and can't handle 8krpm+
OR
- like the crvtec b20 frank, it was the rod bolts that was holding it back due to the 1.54 R/S ratio that made the oem ones bend...

so which is it? i need to replace rods or just the bolts?

i don't mind not being able to rev past 8krpm as the purpose for this is lowend power anyway...

will look for tu88ys thread in the meantime... thanks

best is to get a tunable ecu, crome hondata.

change the rod bolts. stock rods can handle 8500 rpm.

The LS rods are the same as B20 rods. Change the rod bearings to the ITR ones. Add headstuds if budget permits.

[barefootbonzai]

I've also heard that the b18c2 head works better then the b18cr head for worked engines - IE , engines with work done to the block.. and cams etc for the head.

Is this correct?

No it's not correct.

Only time a b18c2 head is gonna perform better than an ITR head is if it has been ported right which cost $$.

[aramiK]

No it's not correct.

Only time a b18c2 head is gonna perform better than an ITR head is if it has been ported right which cost $$.

Really? Hmm, so what was all that other talk in this thread about the advantages of the b18c2 head?

Highjacking topic now but, if I'm building a high power b18c build, should I look into getting the type R head and doing the cams for that etc?

Someone told me the b18c2 provides much higher compression etc?

[fatboyz39]

Really? Hmm, so what was all that other talk in this thread about the advantages of the b18c2 head?

Highjacking topic now but, if I'm building a high power b18c build, should I look into getting the type R head and doing the cams for that etc?

Someone told me the b18c2 provides much higher compression etc?

Yeah slapping a P72 head will raise the comp 0.7 ?

[aramiK]

I have no idea? I'm asking not telling...

Just looooking for adviceeeeeeeeeeee yooooooooooooo!

[dsp26]

I have no idea? I'm asking not telling...

Just looooking for adviceeeeeeeeeeee yooooooooooooo!

lol... he was telling.. the "?" at the end of his post was a typo... love t3h internetz

[fatboyz39]

im not sure how much comp it'll raise. either 0.7 or 1.7

[aramiK]

Ok so dose that mean for overall use if your going to be port/polishing, cams, springs etc etc the head will be better for P72 or P3 XD

[dudeling7]

pretty sure its to do with the different size and shape of the quench pads on the two different heads. a gsr/b18c2 head will raise the compression slightly because of this characteristic.

[aramiK]

But does that make it a BETTER head to work? ???

[string]

pretty sure its to do with the different size and shape of the quench pads on the two different heads. a gsr/b18c2 head will raise the compression slightly because of this characteristic.

The GSR head raises compression due to the small combustion chamber volume. The quench pads exist due to the shape of the combustion chamber and other than reducing the head plane CC area, has no bearing on CC volume.

[fatboyz39]

Worked Pr3 vs a worked P72 = Worked Pr3 wins.