JDM Honda Civic EP3R Jackson Racing Supercharger Questions and Hesitations

[Lukezen27]

Hey Guys

OK, so I'm keen on going Supercharger this time round after turbocharging my last two Civic EG5's
Time for a change.

Convenience and easy of installation is a massive draw card but need some things cleared up before purchasing that's confusing and concerning me..

I've read all the (JRSC) FAQ (http://www.ephatch.com/forum/showthread.php?47192-Jackson-Racing-Supercharger-%28JRSC%29-FAQ.) but that doesn't really help in my case..

Firstly, I'm guessing the installations very easy compared to my last turbo installs?

So the first problem I have is my that my tuner won't touch my car if I buy the JRSC kit..
Reason being, None of the EP3 supercharged in Sydney Australia haven't had any good numbers or results!

Now I believe the problem is we are not getting the correct kits or configuration for the Australian EP3R which are in fact Jap spec TYPE-Rs imported from Japan.

My guess is the kits can't handle the more powerful higher reving version hence the bad power figures.

Stock
Engine K20A
Power 215HP
Redline 8500RPM
Helical LSD

And so on http://www.j-garage.com/honda/civic/04spec.htm

I've been in touch we some other guys in the US who specialize in EP3/DC5 and apparently modding the DC5 kit to fit the JDM EP3's the answer?

Any advise what be great

Thanks

[lbk02si]

They probably got bad results bc boosting such a high compression motor like the k20a isn't a good idea.

[Lukezen27]

They probably got bad results bc boosting such a high compression motor like the k20a isn't a good idea.

All my motors are high comp boost :_

[eurosteez]

comptech has got a supercharger for the k20 that has an intercooler:mtongue:

damn jrsc designed with no intercooler:mcry: not good for high compression

[lldiesel386ll]

comptech has got a supercharger for the k20 that has an intercooler:mtongue:

damn jrsc designed with no intercooler:mcry: not good for high compression

link? :shrug:

neither comptech or jackson racing had designs that implemented any sort of intercooling that went into mass production for either the rsx or ep3 platforms. there are groups that made aftercoolers for the rsx spec jrsc and ctsc's though :thumbu:

[Lukezen27]

comptech has got a supercharger for the k20 that has an intercooler:mtongue:

damn jrsc designed with no intercooler:mcry: not good for high compression

Oh dam, thats crap

got a link to the comptech ?

[Jharobikesr2]

You can always pick up the JRSC; upgrade to the DC5 mani, and go to mercracing.net they specialize in custom making after coolers for the JRSC, talk with Jose.

[04EP3Hatch]

i would just use a ep3 specific kit with the k20a3 crank pulley and the 3.8 blower pulley running a 14gallon per hour methanol nozzle on a quality meth kit. that on a K20A with supporting mods is welllllllllll over 300whp

[02CivicSI-VTEC]

if you want to make the best out of the supercharger setup for your EPR i would suggest this setup. I've ran the ep3 jrsc kit with many differents setup from ep3 crank to k24 with different bp.

ep3 blower kit
2.5 idler pulley from JR
since your crank is the type R you will need a 3.0 blower pulley in order to hit 8-9 psi
run a 650-750cc injector and you're fine.
with this setup u should be at 290-300whp

[eurosteez]

Oh dam, thats crap

got a link to the comptech ?


oops my bad...i was thinkin this kit had an intercooler...it doesnt

http://www.autocarparts.com/part/1542/3/

[Lukezen27]

if you want to make the best out of the supercharger setup for your EPR i would suggest this setup. I've ran the ep3 jrsc kit with many differents setup from ep3 crank to k24 with different bp.

ep3 blower kit
2.5 idler pulley from JR
since your crank is the type R you will need a 3.0 blower pulley in order to hit 8-9 psi
run a 650-750cc injector and you're fine.
with this setup u should be at 290-300whp

Thanks for that :)

I'm hoping to hit 11's

My mates currently running 13.9 with just catback

[Jharobikesr2]

Anyone know what size belt you would need for the JRSC to fit on to the k20a motor?

Isn't it something like 62 or 62.2" with the 3.7" pulley and the a3 CP?

[Lukezen27]

Anyone know what size belt you would need for the JRSC to fit on to the k20a motor?

Isn't it something like 62 or 62.2" with the 3.7" pulley and the a3 CP?

Yeah!!

Do I need to know this?

:)

[Jharobikesr2]

i'm asking lol..

[04EP3Hatch]

Yeah!!

Do I need to know this?

:)

yes you do sir! i would most definately run the k20a3 crank pulley on your engine with the 3.8" blower pulley. at my 7700rpm redline i was hitting 7.8 psi, and at your 8500 you'd prolly see close to 9 which is not to much and not to little. just perfect :) throw in some water meth activated by kpro and your over the 300whp mrk

[HondaFreak]

Easy.
Get the a3 kit. Bolts up no issues. Next, 2004 k20a2 exhaust cam. That gives you the same lift but a shorter duration to keep the boost in the motor. 750cc rc injectors, kpro and your done.
I'm putting 272whp 180wtq at 8800 on a 4.0" pulley at 6.5 psi
You don't need meth if you keep the boost low.

Christian

[04EP3Hatch]

damn you have like the same numbers im gunning for

[Lukezen27]

Easy.
Get the a3 kit. Bolts up no issues. Next, 2004 k20a2 exhaust cam. That gives you the same lift but a shorter duration to keep the boost in the motor. 750cc rc injectors, kpro and your done.
I'm putting 272whp 180wtq at 8800 on a 4.0" pulley at 6.5 psi
You don't need meth if you keep the boost low.

Christian

How would this go but without changing the 2004 k20a2 exhaust cam?

My target is only 250whp to keep the temps down on track..

[04EP3Hatch]

How would this go but without changing the 2004 k20a2 exhaust cam?

My target is only 250whp to keep the temps down on track..

well dude the 4.0 pulley will keep your temps down anyway, what type of track duty we talking here? auto-x? drag?

[Lukezen27]

well dude the 4.0 pulley will keep your temps down anyway, what type of track duty we talking here? auto-x? drag?

I normally drag but hoping for some track early next year
I still getting my head round SC tech, so the 4.0 pulley is the internal one inside the SC?

[04EP3Hatch]

I normally drag but hoping for some track early next year
I still getting my head round SC tech, so the 4.0 pulley is the internal one inside the SC?

noooo, the 4.0 is on the outside of the blower, your serpentine belt runs around it

[Lukezen27]

noooo, the 4.0 is on the outside of the blower, your serpentine belt runs around it

So why would that keeps temps down?

[rsamd]

Just get the rsx 02-04 s/c kit, some 650cc or so and a 3.4'' pulley. K20a are perfect for supercharging. with some good i/h/e mods you can hit ~300whp with the 7psi pulley. :up:

[Lukezen27]

Just get the rsx 02-04 s/c kit, some 650cc or so and a 3.4'' pulley. K20a are perfect for supercharging. with some good i/h/e mods you can hit ~300whp with the 7psi pulley. :up:

Yeah that's the kit I've been looking at but its a lot more money lol

what's the main difference between the rsx 02-04 and the cheaper SI kit?

[neoamd]

Yeah that's the kit I've been looking at but its a lot more money lol

what's the main difference between the rsx 02-04 and the cheaper SI kit?

1. Follow this link and sign up: http://forums.clubrsx.com/register.php

2. Scroll down to the supercharger section and read: http://forums.clubrsx.com/forumdisplay.php?f=139

3. Profit

[neoamd]

The EP3 specific kit will fit the car with no cutting etc. The RSX kit will fit buy may require some cutting.

If I were you go with the RSX specific kit and then you can install a water to air aftercooler setup from Jmercado (He is a boss).

I'd love to swap to the RSX JRSC manifold, bypass valve assembly, inlet, etc so I could run the aftercooler on the shitty K20A3 motor we get here in the states. I have a dry N20 kit just sitting at the house begging to be installed but I'd rather not scatter this motors internals every where just yet, need the FD to be drive able first.

Get the RSX Kit and read every thread in this post: http://forums.clubrsx.com/showthread.php?t=497654

[Lukezen27]

The EP3 specific kit will fit the car with no cutting etc. The RSX kit will fit buy may require some cutting.

If I were you go with the RSX specific kit and then you can install a water to air aftercooler setup from Jmercado (He is a boss).

I'd love to swap to the RSX JRSC manifold, bypass valve assembly, inlet, etc so I could run the aftercooler on the shitty K20A3 motor we get here in the states. I have a dry N20 kit just sitting at the house begging to be installed but I'd rather not scatter this motors internals every where just yet, need the FD to be drive able first.

Get the RSX Kit and read every thread in this post: http://forums.clubrsx.com/showthread.php?t=497654

I've been told the best opt for my EP is the DC5 kits moding for the EP3

[eurosteez]

So why would that keeps temps down?

ideal gas law...less boost = less heat

[neoamd]

That is what I said, go with the RSX kit. :facepalm:

[Lukezen27]

The EP3 specific kit will fit the car with no cutting etc. The RSX kit will fit buy may require some cutting.

If I were you go with the RSX specific kit and then you can install a water to air aftercooler setup from Jmercado (He is a boss).

I'd love to swap to the RSX JRSC manifold, bypass valve assembly, inlet, etc so I could run the aftercooler on the shitty K20A3 motor we get here in the states. I have a dry N20 kit just sitting at the house begging to be installed but I'd rather not scatter this motors internals every where just yet, need the FD to be drive able first.

Get the RSX Kit and read every thread in this post: http://forums.clubrsx.com/showthread.php?t=497654

Good read even if a lot of the photos are now missing lol

So RSX Kit looks like its using a differenet blower to the DC5 or IS kits

[Ba82Ep3]

Use the EP charger and 3.8 SC pulley with a modded OEM belt tensioner and a k24z (Newer Accord or "skeletor") crank pulley. Swap out your MAP sensor with an upgraded sensor of your choice. You will be guaranteed 10psi at 8krpm on your k20a... and it will run just fine on 92 octane fuel after tuning.

Anything smaller than a 3.8 SC pulley with the JRSC tensioner WILL slip at high RPM's as the belt stretches.

If you want a good selection of belt size/length, you need to look at the 8-10 rib belts... and cut off the extra ribs you do not need.

If you do decide to go the above route... i have a Hondata KPro KAL that works as a solid basemap id be willing to pass on (VTEC switchpoint, not window, at 4500rpm).

[K20A EP3]

Proof to that ^

[03Si757]

Proof to that ^

Talk about proof in the pudding... Thing is nasty