I have a b18c5 in my ITR with jun stage 3 cams. I want to put some b16b high dome pistons in it. Will the valves hit the pistons, because of the height? Can somebody help me? And also will a need to change the injectors to larger ones?

 

i am gonna be running CTR pistons in my B18c5 with cams 310cc injectors valve trains. blah blah

as far as i know. u should be OKAY.. have to tune it good.
i am not sure about clearance to valves clay test? could help

do some seraching tho.

 

Yep...I'm going to agree with claying the engine if you or your tuner is unsure. Definately better than replacing the whole motor.

The stock injectors are fine.

 

I think it will be close but watching your rev range might help...rod stretch is a bitch at 9500 rpms...and also cam timing...Ill ask C-speed to chime in on this one...but its always good to clay a motor if you're not sure.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Haleiwa-Brando &raquo;</TD></TR><TR><TD CLASS="quote">Yep...I'm going to agree with claying the engine if you or your tuner is unsure. Definately better than replacing the whole motor.

The stock injectors are fine.</TD></TR></TABLE>


It has been done many times in the past:

itr longblock with ctr pistons and jun 3 cams and upgraded valvesprings + retainers.

Make sure you clay the motor and degree those cams. You may have 2deg plus or minus from zero, according to JUN USA.


-hth

 

just a question about claying the engine, when tighting down the top would the head gasket set. and a head gasket should always be replaced when taking the top off? right?

 

CTR pistons + JUN3 cams will not have piston to valve contact. However, like stated above, you should clay the motor to find out how much cam angle you can put in to it before you have valve to valve contact, however with the high dome pistons, you may encounter piston to valve contact before you have valve to valve.

I believe JUN states maximum cam angle overlap is 6degs (ie. +3in/-3ex = total 6deg). With high dome pistons, you may only be able to get away with +/-2 degs in either direction on each cam before piston to valve contact.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">
just a question about claying the engine, when tighting down the top would the head gasket set. and a head gasket should always be replaced when taking the top off? right?
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As for the headgasket during a clay test - use an OLD gasket.

 

well yes that would make sense thank you