ATTN all JRSC luders - Honda Prelude Forum

Greek Lude · 10-12-2001, 10:57 PM

Hey there JRSC luders. I was wondering if you would be kind enough to help me out. I'm looking into putting on a JRSC. But I have to make out a list of what is needed and what i don't need so if you guys could tell me what's included in the kit plus what else I need to get please feel free to help me out. Also if somthing I have put down is not needed please say so and why.

1) Included in kit: (Are all these items in the kit?)
- SC
- Manifold
- Belts
- Fuel Presure Regulator?????
- MAP Controler?????
- Boost Timming Controller?????
- Fuel Pump????????

2)Do I need the JR Liquid Intercooling system? Have you guys installed it? I assume it's an extra.

3) Other parts I intend to upgrade or add:
- JR VPAC (This is seperate right?)
- MSD 6AL Ignition
- MSD Blaster Coils
- AEM Fuel Rails
- Magnicor 8.5 Wires
- Cold Spark Plugs
- Injectors
- Fuel Filter
- Boost Gauge
- A/F Ratio Gauge
- Fuel Pressure Gauge
- Oil Pressure Gauge

4) Anything else missing?

For now this will all be done on stock headers and exaust. After that I'll get them and do some tunning. Thanx guys for your responses.

iranman · 10-13-2001, 11:02 AM

Looks good to me.

Water injection is a tricky subject. Some really like it, others don't. A search on the F/I integras forum on hostboard.com yields a wide array of answers. There just doesn't seem to be enough facts out there from users with the system installed.

IMO, it looks like overkill on a 6psi setup.

schwett · 10-13-2001, 07:59 PM

all the items in #1 are included. ignition, coil, and wires are not going to make any difference. the gauges are a good idea, esp. fuel pressure and boost/vacuum pressure. the fuel rail won't help you at all unless you want to install an AEM FPR, which you might actually need to idle those larger injectors. i haven't heard of a lot of people going with bigger injectors without some way to adjust the fuel curve, i.e. a vafc, sfc, hondata, etc.

if you do want to get a more "tune-able" and lower pressure fuel system, you'll need a better AFPR (cartech, replaces the jackson racing unit), bigger injectors, and either a VAFC/SFC/Hondata or replacement for your stock FPR and fuel rail or the willingness to drill holes in the stock FPR to get the idle pressure down. as soon as i get around to it, i'm probably going to get bigger injectors (probably just 370s), a cartech FMU (much more adjustable than the jackson piece) and a VAFC.

you may also want to get the cheap hondata head gasket, which is really hard to install after the blower goes on, but allegedly lowers intake air temperature significantly. it can't hurt.

Quote:

Originally posted by Greek Lude
Hey there JRSC luders. I was wondering if you would be kind enough to help me out. I'm looking into putting on a JRSC. But I have to make out a list of what is needed and what i don't need so if you guys could tell me what's included in the kit plus what else I need to get please feel free to help me out. Also if somthing I have put down is not needed please say so and why.

1) Included in kit: (Are all these items in the kit?)
- SC
- Manifold
- Belts
- Fuel Presure Regulator?????
- MAP Controler?????
- Boost Timming Controller?????
- Fuel Pump????????

2)Do I need the JR Liquid Intercooling system? Have you guys installed it? I assume it's an extra.

3) Other parts I intend to upgrade or add:
- JR VPAC (This is seperate right?)
- MSD 6AL Ignition
- MSD Blaster Coils
- AEM Fuel Rails
- Magnicor 8.5 Wires
- Cold Spark Plugs
- Injectors
- Fuel Filter
- Boost Gauge
- A/F Ratio Gauge
- Fuel Pressure Gauge
- Oil Pressure Gauge

4) Anything else missing?

For now this will all be done on stock headers and exaust. After that I'll get them and do some tunning. Thanx guys for your responses.

Greek Lude · 10-13-2001, 09:08 PM

Cool. thanks for the reply guys. Curently I have a VAFC installed. So that's one hurdle passed in regards to larger injectors. But as it seems most of you are using the stock ones and it seems sufficient from what I have read. Also I am looking forward to the usefulness of the VPAC. The idea of giving the proper maps and fual/air ratios without much tunning needed (VAFC) is very appealing. If I stay with stock injectors and install the VPAC does that mean I have to get rid of the VAFC? Can the VAFC, VPAC coexist? Or will this just make a mess of things. Thanks for all your answers. I'm surprised my fellow T.O. Luder Dirty hasn't responded to this yet.
Also do any of you intend on doing any minor internalls? Slight porting of the casts, Pistons? Is it worth it? Will a larger throtle bodu help? I like the idea with the Hondata gasket.

DirtyLude · 10-13-2001, 09:57 PM

I let the JRSC guys handle the JRSC questions unless it's about general tuning.

Water Injection is okay for racing, but it just seems like another thing that can go wrong on a daily driver. You can't tune your car assuming that the water injection is going to be there, since you might not have filled the tank. After about a month of filling that damn tank you'll get tired of it. That and since you can't up the boost pressure yet, the only purpose of the water injection would be to combat detonation. People here have been able to get rid of their detonation with little retarded timing, so otherwise it's useless.

It's only personal opinion, but I can't see the Hondata gasket doing a whole lot. I'd wait until someone gets some before and after datalogs to prove what it does.

Oblivious · 10-14-2001, 12:24 AM

I have to disagree with schwett.

After I added a MSD 6al, I noticed a big improvement in roll-on acceleration and overall smoothness, esepecially at lower rpms. I don't have any before/after data, but it felt much better.

I recommend it to anyone going F.I.

schwett · 10-14-2001, 12:28 AM

interesting - that's contrary to the other word of mouth i've heard on the msd ignition w/jrsc. i'd love to see a dyno!

Quote:

Originally posted by Oblivious
I have to disagree with schwett.

After I added a MSD 6al, I noticed a big improvement in roll-on acceleration and overall smoothness, esepecially at lower rpms. I don't have any before/after data, but it felt much better.

I recommend it to anyone going F.I.

Oblivious · 10-14-2001, 12:39 AM

Only dyno I have is from when my belt was slipping due to a bad power steering casting.
Man, was that disappointing!

schwett · 10-14-2001, 12:43 AM

heh heh heh. i got the bad casting too, despite JRs guarrantees that i got the kit much too late to possibly have the leaky adapter. riiiiiiiiiiiiiiiiight.

Quote:

Originally posted by Oblivious
Only dyno I have is from when my belt was slipping due to a bad power steering casting.
Man, was that disappointing!

Oblivious · 10-14-2001, 12:55 AM

Their early castings suck.
In addition to my bad power steering adapter, my power steering pump bracket was flawed and broke at the elt tension adjuster hole.
Took out a big chunk, threads and all.

iranman · 10-20-2001, 03:52 PM

Quote:

Originally posted by Greek Lude
If I stay with stock injectors and install the VPAC does that mean I have to get rid of the VAFC? Can the VAFC, VPAC coexist? Or will this just make a mess of things.

Will a larger throtle bodu help?

The whole reason behind the tuning of the V-AFC is merely that when you tell the ECU to switch to the VTEC cams earlier, the car is still under the timing and fuel maps for the non-VTEC cams. By adjusting the fuel as necessary (with the V-AFC), you setup your own modified map for the region now under control of the VTEC cams. Most people often take this opportunity to fine tune the fuel maps throughout the RPM range to gain some ponies here and there--it usually involves a slight leaning out at higher rpms.

The VPAC supposedly uses the map for the VTEC cams whenever they are engaged, saving you the trouble of re-doing the fuel maps. It also doesn't retard the timing as much (i.e. modifying the BTC signals) during VTEC.

They can co-exist, as long as you place the V-AFC after the VPAC, where you can do some fine tuning of the fuel maps even further.

A larger bore TB always helps out. More air in (with obviously more fuel) = more power. Just be sure the TB casting on the supercharger is port-matched to whatever size TB you purchase.

Greek Lude · 10-21-2001, 08:45 AM

Thanx once more guys for the prompt resopnsess. It looks as though I'll be doing it. I just want to make sure I've covered all the bases and have the thing running safely and me knowing what's going on at the same time to. This is all new to me. I bet Dirty can't wait for me to call him and give him the green light so he can tinker around with it.