HeikDiesel

Been aware of the Rotrex kit for awhile, just really didn't want to stomach the price tag when I feel I could do a pretty nice turbo kit for that much. I guess my concerns would still be for IAT's and belt slip. Looks like some guys are pulling 18psi out of the C38 with very little belt slip. I wonder what IAT's look like. Mine usually run 35* above ambient when just cruzing around.

JRCivic1

I don't think I am experiencing any belt slip. I know Motorvations has installed/tuned a whole bunch of the Rotrex based systems and belt slip is extremely uncommon. IAT's are 25-30 degrees above ambient during steady-state driving... and drop rapidly under full throttle acceleration. Under hood temps are WAY cooler than any turbo car ever dreamed of. The power delivery is very linear...

I am VERY satisfied with what I have now. I may be able to make more power with a turbo kit for the same money, but I wouldn't change a thing.

HeikDiesel

See that's my problem. Under even a partial load like pulling a decent hill (Colorado) or acceleration from a stop light my IAT's go crazy. When I pull a mountain pass at 75mph for several miles, it's not uncommon for me to see 200+ degrees even with the LHT intercooler

xchipx

Hey guys, so after reading through this thread would I be right in saying that on a gsr running gsr intake cam, itr exh cam , possibly around +2 and -1 respectively, is a good combo and cam config even to this day?

Okay now this isnt a JRSC but thought it would be good to share with you. Maybe some of you have played with toyotas supercharger on your b series? Heres mine, hopefully to be fitted soon...
It bolts in place of the aircon compressor, and uses its belt and tensioner.

First pic is my sc, second pic is of it fitted to someone elses car.

xchipx

People use the crv crank pulley to overdrive the jrsc, however does anyone know if the diametre of the aircon part of the crv pulley (or any other honda pulley for that matter) is different across different models ? My sc will be running off of the aircon belt you see.

JRCivic1

For a "B" series engine, the CRV crank pulley has the largest diameter A/C (aircon as you stated) belt groove... this will turn your Toyota blower the fastest thus making the most boost. Going SMALLER from this, as in LESS boost than the CRV crank pulley, would be the following order: Integra LS/RS/GS (B18B), Integra GSR (USDM B18C1 or CDM/EDM B18C3/4), B16A, Integra Type R (USDM B18C5 or JDM B18C Spec R).

Black R

That's pretty cool, but needs an intercooler IMO.

~sp33~

Yeah an intercooler would fit great on there.

HeikDiesel

That's a pretty cool setup. I would venture to bet you would get a ton of belt slip from a single drive belt on an overdriven supercharger. Keep us posted how it does.

+1 on the intercooler.

redsidriver

Hey guys selling a b16 jrsc kit pretty complete . Only problem is the Teflon is gone from the rotors not sure why I was running methanol injection for a little bit .Engine blew and this why I removed it .Made 205 whp on stock engine Other then that's it seems fine to me unknown mileage been sitting for about 4 years . Message me if interested. Located near Dallas texas

redsidriver

jsr815

Is any one running a 4bar map? And is it necessary

~sp33~

I ran 11psi fine on the factory MAP, and it was still reading accurately. I've heard the limit is around 10-12psi, but can only vouch for up to 11.

Black R

That's interesting.

What heat exchanger and pump are you using?

Have you thought of using water injection as well?

HeikDiesel

I use a PWR radiator in the place of the A/C condenser. I have a feeling if I was able to restrict water flow or add a thermostat to where it spent more time in the radiator to actually heat transfer better I would get better results. As far as meth/water injection it doesn't really bother me too bad. With E85 my IAT's should never really be an issue, it just is something that bothers me that I know I should be able to make better if you know what I mean.

cadwiese

i have a question...
i just got my jrsc dyno tuned and i feel the numbers may be a little low.
b18b stock engine
arp head studs
arp connecting rod bolts
4-1 big tube header
test pipe
3" exhaust and straight through exhaust
hondata intake manifold gasket
550cc grams injectors
255lph grams fuel pump
short ram intake
mvn stepper pulley
crv crank pulley
devils own water/alcohol kit (spraying at 7psi)
tuned on a hondata v3

the car put down 172 hp and 150 torque @ 10.5 psi to the wheels on a dynojet dyno.
it was tuned in Vallejo ca and the outside temp was about 85-90
my intake temps were around 130 and the tuner didnt want to push the temps after that

am i wrong for thinking these number seem low???

ty in advance

HeikDiesel

For a stock internal LS on pump gas those are pretty reasonable numbers

~sp33~

Do those temps seem high considering you're running meth injection? How do you read intake temperatures with meth injection installed? Do you have to rely on exhaust temps?

Black R

personally I would be quite disappointed.

Go 14 psi!

cadwiese

well i dont want to push the stock engine too much but do you think going to 14psi is too much?

what about an aftermarket cam?

Black R

I'm sorry, I don't know a lot about the non-vtec heads - do you have the "better" one?

It's all going to boil down to how much you want to spend, and how much power you want to make.

Next up would be smaller blower pulley / better flowing head / bigger throttle body / cams + supporting valvetrain.

Maybe also try a different tuner if you're not happy with the current one?

How does the car feel?

cadwiese

the car feels great and drives normal. there really isnt a better head that i know of and i guess ill start looking into building a head with bigger valves and better springs to support upgraded cams. after that i would start to look into the lht intercooler and heat exchanger set-up

mr. Grind

Unfortunately..the air flow capacity of these toyota superchargers are that of a m45 or less. We have tons of them here.

HeikDiesel

Never had an LS but all the people from team integra with a JRSC on a b18 non-vtec had trouble making power.

Black R

^ I guess it's the low compression?

There were several local guys making somewhere around 280whp on stock block LS motors - they would run up to 17psi turbo.