JRSC charge air temp - Honda Prelude Forum

emeraldlion · 03-04-2009, 07:32 PM

I don't undertand why there isn't more info on intercoolers for the sc. Is that something that makes this an unreasonable? I saw a post where girlnlude had mentioned it briefly but didn't see anything else. Also, are there any other manufacturers of lower temp fan switches/thermostats and high pressure radiator caps besides mugen?

Tee-Dot · 03-04-2009, 07:38 PM

Where would you put an intercooler in association w/ the JRSC???

You can't put one inline w/ the intake hose before the tb, and you can't put one between the blower and the intake manifold.

emeraldlion · 03-04-2009, 07:52 PM

I suppose that's my question. Why couldn't you fab one into the intake piping? I'm assuming the reason it wouldn't work is because it wouldn't lower the charge temp that much. Another question for the gurus. I've seen the setups running larger 550cc injectors to provide better fueling. If you're going to be tuning anyways would larger injectors hurt? Say if I could get used 750cc precision injectors.

Tee-Dot · 03-04-2009, 07:58 PM

For one thing, intercoolers are there to lower the temperature of the air after it's been compressed. Adding an intercooler before the tb wouldn't make any sense because the air is already at it's ambient temperature. For a moment, though, say you are adding an intercooler before the tb. The amount of tubing, sharp turns, and overall constrictiveness would completely destroy the amount of airflow reaching the blower.

emeraldlion · 03-04-2009, 08:05 PM

OKay I get that. I also found a thread that answered the injector question. I have an SH so I was figuring e-manage ultimate to tune and keep atts. I only want to run the 6lb as long as my engine will last. Sharkcohen has recommended 550ccinjectors, but I read that the greddy piggyback systems won't allow for anything over 150% of stock. Is there any way around this?71dsp has some rdx 430cc's for a niceprice, but I want to safeguard this system as well as possible.

Tee-Dot · 03-04-2009, 08:07 PM

I'm just here for the intercooler questions.

emeraldlion · 03-04-2009, 08:25 PM

Lol thanks blacklude for clearing that up for me. AFter doing a little more eading on honda-tech. It looks like people are porting and coating the charger rotors to reduce heattransfer/buildup as well as injecting methanol. If you ran e85 and were only running a stock system and 6lb pulley I'm assuming that would go a long way in reducing detonation. Also for the tuning people,does the e-manage ultimate provide safeguards like the J&S so that you wouldn't have to have both systems?

geramy · 03-06-2009, 09:49 PM

You can get some 440 injectors or some DSM 450s and a resistor box and tune with the emanage ultimate. I dont know if they would be big enough to run e85 or if the ultimate is even capable of tuning using e85.

I am running 1000cc injectors, and e85. I am also running a ported blower and 14lbs of boost. there are ways around just about anything if you want to spend the money

you could build a custom intake manifold with a water to air intercooler. It would take some time and money but would be an awesome project. A few people have started this in the past for the prelude i have never seen one completed. There is one available for the B series JRSCs but that is a completely different setup.

I will probably be looking into this in the future, I will be in Iraq for a year and will have nothing else to spend my money on so I might have one made.... if it turns out good it might be for sale in the future.

G

EGPrelude · 03-07-2009, 04:43 AM

E-manage Ultimate would allow you to safely run 6psi and keep atts. Though, many have been quoted saying that atts shuts off at about 250whp, I have personally seen that at 230-240, the atts light comes on even on straight line pulls.

The emanage ultimate does not have J&S safeguards at all. In regards to injectors, you should definitely be fine with 440-450CC injectors. It would definitely be adequate fueling.

The reason you run as small of an injector as possible is for idling reasons. Once you get too large, the variation in size makes it much more difficult to control good idle. As far as the greddy being able to control 150% of the injectors (and I believe this only applies to the BLUE, NOT the ULTIMATE), you would only take that into consideration if you are applying fuel injector corrections in the greddy software. The fuel injector correction allows you to load the stock injectors size and the increased injector size and allows the greddy unit to compensate for the addiational size. What I have found is that this does not work very effectively at all. Thus, if you were to just tune on a blank slate, and tune with no injector correction, you can tune on any size injectors.

emeraldlion · 03-08-2009, 07:11 AM

Thanks guys, that was some enlightening info. Geramy, I would love to say I have an endless supply of money to do different things, but I try to spread it around as evenly as possible, so most of my purchases stay in produced pieces so they aren't terribly expensive. I'm still not convinced that I want FI on my stock block for the obvious longitivity issues. NA just does not produce the power for the money with the h22a. I will definitely keep all of this in mind though.