will a JRSC work well with 12.5:1 compression and jun 3's on pump gas. Just curios and would look into it if you guys think it would work.

 

On pump gas?

Also, you should go with stock cams if you are going to use a JRSC.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nholmes &raquo;</TD></TR><TR><TD CLASS="quote">On pump gas?

Also, you should go with stock cams if you are going to use a JRSC.</TD></TR></TABLE>

why?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr1244 &raquo;</TD></TR><TR><TD CLASS="quote">

why?</TD></TR></TABLE>

Something to do with overlap, IIRC.

 

hehe i'm a big noob specially when it comes to FI

 

It can be done, I ran it for a while but it's a bitch to tune. The blower make instant boost at lower rpms, which means "Ping City"
Anyou will have to go with milder cams.

 

Yep.

 

You would need to reduce intake temps somehow, ie: LHT intercooler for the JRSC.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRVRX &raquo;</TD></TR><TR><TD CLASS="quote">It can be done, I ran it for a while but it's a bitch to tune. The blower make instant boost at lower rpms, which means "Ping City"
Anyou will have to go with milder cams.</TD></TR></TABLE>
What do you mean "ping city"? would a stock CTR intake cam and a stock ITR exhaust cam work well whith that set up?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">You would need to reduce intake temps somehow, ie: LHT intercooler for the JRSC.
</TD></TR></TABLE>
how much is the LHT intercooler?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">You would need to reduce intake temps somehow, ie: LHT intercooler for the JRSC.
</TD></TR></TABLE>

I thought running higher compression with a JRSC helps with IAT temps because the blower doesn't have to spin as fast?

12.5:1 on a JRSC is pushing it. Some have been successful running 11.5:1... but 12.5:1 is pushing it on pump gas, even for NA.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Takumi Fujiwara &raquo;</TD></TR><TR><TD CLASS="quote">

I thought running higher compression with a JRSC helps with IAT temps because the blower doesn't have to spin as fast?

12.5:1 on a JRSC is pushing it. Some have been successful running 11.5:1... but 12.5:1 is pushing it on pump gas, even for NA.</TD></TR></TABLE>


Shouldn't the blower spin just as fast regardless of compression?

I've heard that GSR cam (either Intake or exhaust or both, can't remember the combination) would be better than stock ITR cams. Too much overlap with stock cams.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Fayzeless &raquo;</TD></TR><TR><TD CLASS="quote">will a JRSC work well with 12.5:1 compression and jun 3's on pump gas.</TD></TR></TABLE>

I would not recommend the Jun 3 cams. They are meant for n/a applications and you will lose hp over the stock cams with a JRSC application.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92TypeR &raquo;</TD></TR><TR><TD CLASS="quote">You would need to reduce intake temps somehow, ie: LHT intercooler for the JRSC.</TD></TR></TABLE>

Minor blower work, such as porting the s-tube, also help significantly.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Fayzeless &raquo;</TD></TR><TR><TD CLASS="quote">how much is the LHT intercooler?</TD></TR></TABLE>

The intake manifold is $995 + core, and the heat exchanger is $350.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Takumi Fujiwara &raquo;</TD></TR><TR><TD CLASS="quote">I thought running higher compression with a JRSC helps with IAT temps because the blower doesn't have to spin as fast?</TD></TR></TABLE>

You are incorrect. High compression will not help IAT's; It will, however, increase cylinder temperatures at the end of the compression stroke. What you are thinking of is people with high compression motors running lower boost levels because they are concerned about IAT's, detonation, etc. That being said, it is fine to run high compression with the JRSC-- it just leaves little margin for error in the tune, so make sure you get a known reputable tuner such as Jeff Evans or Jack at P1.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88 rex &raquo;</TD></TR><TR><TD CLASS="quote">Shouldn't the blower spin just as fast regardless of compression?</TD></TR></TABLE>

You are correct.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88 rex &raquo;</TD></TR><TR><TD CLASS="quote">I've heard that GSR cam (either Intake or exhaust or both, can't remember the combination) would be better than stock ITR cams. Too much overlap with stock cams.</TD></TR></TABLE>

This is also true. The best combination is a GSR intake cam with an ITR exhaust cam, along with a set of adjustable cam gears to be adjusted by your tuner.


Cheers and happy boosting.

 

with high compression how much boost do you think I can run with that setup? how much power do you think i could get out of it?