Ok hopefully this wasn't already covered as i didn't do a good enough research on this. But i want peoples opinions or advice who have built a motor mainly for a JRSC setup. At the moment i am running a JRSC kit , stock in my DB8. I really like the torque and this sounds crazy but i drive my car year round..... that means WINTER!! lol through winter blizzards and to snowboard! I love being Supercharged its definitely the way to go for a street car! But at the moment i am in high school and in position of getting rid of it because when i got my car it was already Supercharged but with the FMU and it caused alot of problems, im leaving clouds of smoke behind my car so im getting rid of it and using that money or whatever to start building a motor for another JRSC and do it the right way! How would you build a motor to withstand the JRSC and make some power?? like piston wise and compression ratios??? thanks guys!! hope rmcdaniels will chime in !

 

I assume its still the 1.8L vtec motor in it? If so, just forged pistons/rods (I'd recommend wiseco/eagle) and good bearings (oem or acl, whatever gives you the right clearances) will handle as much power as almost any SC you'll find can make.

The best way to make SC power would be an Endyne-modified JRSC, a good header & exhaust, along with an LHT (?) aftercooler.

With a stock piston/rod rebuild, it will be fine for 210-250 you'll get from a stock JRSC, depending on what pulley you use.

 

so its pointless to change the ratio up then correct? i was checking out rmcdaniels jrsc setup, it is insane! i would love to some how make around 250+ , but yeah i still have the stock b18c1 in the gsr.

 

Leave the motor stock.

 

My 12:1 setup was actually a bit too high, we were knock limited on pump gas running 8 PSI of boost, but my 11:1 setup worked much better. For a street car I'd keep it around 10-10.5:1. John at LHT has built a lot more supercharged setups than I have and that's the advice that he gave to me as well. We had a minor fueling problem and wrecked the pistons, but before I tore it down it worked pretty well.

 

Thanks Roger.

I always recomend you keep the compression around 10 - 10.5 to 1 ratio. A GSR intake and Type R exhaust cam has always proved itself alwell as cam gears with OEM quality.
I have still found the Kamakazi header ( for the money) to produce the best overall gains. Replace the peper gasket with a copper one and change the bolts to grade 8 and torque to 45ft lbs. A good 2.5" mandrel bent exhaust as all you need for upto 300whp.
After 8psi the intake temps are going to make it hard to add any kind of timing to make power, I have to plug our intercooler at this point as well as a ported "S" tube with a larger thottle body.
The Intake tube needs to be as larger as possible and short without drawing in too much hot air. ie. Route the filter near the head light with some kind of heat shield.

We are supercharging a Type R motor right now with all above which we shall dyno then add 45-50 shot of NOS. We shall show the results for those who may be interested.

 

im very interested in seeing that type r motor performe with that nos shot. Im assuming its running stock compression ratio and LHT intercooler?

 

I'm interested in a type-R motor
JDM Type-R w/ what things should i upgrade to run a 10 psi pulley on JRSC w/ water injection?
Or do you recommend me sending out the manifold to get it modified for Intercooler.
Crome tune etc
LMK
side note: i'm in canada so i'd have to send my stuff down to the states to get this all modified if i need too