Rrc intake manifold

[ep3demon]

HAS anybody put one of these successfully into their ep, just read an older article in import tuner or one of those magazines where the fg made 250 whp utilizing the rrc manifold over the rbc. also please input what tb you used they stated they can be mondified to accept a cable link tb so i know its not just for dbw systems. anyways any info would b greatly appreciated.

[urthworm]

Ive got one on my ep.. I have a k20a swap. I used the tsx thermal spacer instead of notching the manifold for the idle air control valve, then a Karcepts adaptor, then the oem gasket followed by the stock throttle body. The radiator support has to be cut or sculpted with a rubber hammer (careful now.. if this isnt done right the hood will sit a lil off) for it to fit.
http://i37.photobucket.com/albums/e74/vwright01/Picture218.jpg

the scratches arent from hammering it.. its from past engine pulls and what not. But you can see the few dimples from beating on it.

http://i37.photobucket.com/albums/e74/vwright01/Picture220.jpg

[Slip_Angle]

Where did you get the TSX thermal spacer?

[AKEP]

k24a2/k20z3 hondata intake manifold gasket^^ same price as k20 Hondata IMG - it has more gasket on the side of it for the coolant passage.
that and the throttle body adapter can be bought through karcepts, along with the oem gaskets.

you can notch the bolt holes on the ends of the rad support, rather than beat/sculpt the middle of the support. you elongate the holes on the end so you can move the rad support forward, and you just have to elongate the notch area behind the hood latch so the hood pin still fits. looks much cleaner and theres less material removed.

[Slip_Angle]

k24a2/k20z3 hondata intake manifold gasket^^ same price as k20 Hondata IMG - it has more gasket on the side of it for the coolant passage.
that and the throttle body adapter can be bought through karcepts, along with the oem gaskets.

you can notch the bolt holes on the ends of the rad support, rather than beat/sculpt the middle of the support. you elongate the holes on the end so you can move the rad support forward, and you just have to elongate the notch area behind the hood latch so the hood pin still fits. looks much cleaner and theres less material removed.

Oh, I see. I thought he was talking about a spacer for the TB. I have the Hondata IMG.

So, I have the Karcepts adapter on my RBB manifold. Would that work with the RRC? It seems to me the RRC needs a notch or something for the IACV? Could I modify mine? Also, is the TB opening the same?

[AKEP]

http://www.karcepts.com/shop/product.php?id_product=4

according to their website, if you have the karcepts tb adapter on the RBB, it should work with the rrc/rbc.

just to be clear, if you dont take off the coolant port on the rrc/rbc, you need the tsx/k20z3 IMG (not sure if you have it installed yet)

i dont have my idle bypass/thermal bypass either, i don't have my rbc installed yet either so i dont know about the IAC. assuming karcepts website is true, you should be good there.

[talonXracer]

The RRC mani will show even greater losses down low on the EP3's K20A3 than the RBC shows and with absolutely no additional gains up top in comparison.


And if they stated they seen 250whp on a K20Z3 with only the mani swap, then I have this bridge for sale, low useage.......LOL

[Slip_Angle]

http://www.karcepts.com/shop/product.php?id_product=4

according to their website, if you have the karcepts tb adapter on the RBB, it should work with the rrc/rbc.

just to be clear, if you dont take off the coolant port on the rrc/rbc, you need the tsx/k20z3 IMG (not sure if you have it installed yet)

i dont have my idle bypass/thermal bypass either, i don't have my rbc installed yet either so i dont know about the IAC. assuming karcepts website is true, you should be good there.

I still have the RBB IMG gasket with coolant port so no modifications required there... How much does the RBC stick past the radiator support? I'm curious because I heard the RRC is slightly shorter than the RBC so maybe I won't need to work the rad support?

Also, it looks like my Karcepts adapter will work but I need to put a small notch in it for the RRC and IACV.

[AKEP]

get a dremel. like talon said, theres no gains on the A3, you need a "better" engine. or boost.





































http://www.kinggraphics.com/images/306.jpg

[Slip_Angle]

Not sure if you're thinking I have a k20a3? My setup below. Question is how the RRC will change things.

2004 K24a2
2006 K24a2 cams
RBB Manifold
3" custom CAI
KRRH
2.5" Custom Exhaust
50*VTC
LSD

[AKEP]

k good. some guys here have seen 220-230 whp w/ an rbc manifold.

i also just read that the k24a2 can run all 50* of the vtc. just not at high rpm. (i too have the 50* vtc, but im not tuned yet.)

[talonXracer]

I would expect substantial losses down low and in the midrange and mediocre gains up top with your setup and a RRC mani. The karcepts adaptor can be EASILY "notched' to feed the idle air.

[Slip_Angle]

I would expect substantial losses down low and in the midrange and mediocre gains up top with your setup and a RRC mani. The karcepts adaptor can be EASILY "notched' to feed the idle air.

Oh ya? Are you thinking that because it's a k24 and the stroke factor? Everything I've seen so far says that's true but with the 04 cams. With the 06 cams they are much better and can use the high flow of the RRC/RBC.

I also have a PRC manifold in my tickle trunk!

[Siborg]

Here's the work I did on HUR1CNE's RRC. It took a bit of time to trim it, but it turned out nice, PAX tuned it yesterday and it felt good :mwink:.


http://i302.photobucket.com/albums/nn116/siborg-ep/ed09dc2d.jpg
http://i302.photobucket.com/albums/nn116/siborg-ep/0a3b95bc.jpg

[AKEP]

very nice

[talonXracer]

Oh ya? Are you thinking that because it's a k24 and the stroke factor? Everything I've seen so far says that's true but with the 04 cams. With the 06 cams they are much better and can use the high flow of the RRC/RBC.

I also have a PRC manifold in my tickle trunk!

Missed the 06' cams part, the 06 cams still will just make use of the RRC in the mid range, nothing down low. But seeing the long stroke already produces a bit more torque already over a K20, the low end would be very drivable. The mid range should be impressive as VTEC comes in.

[Slip_Angle]

Here's the work I did on HUR1CNE's RRC. It took a bit of time to trim it, but it turned out nice, PAX tuned it yesterday and it felt good :mwink:.


Got some more pictures from further back? looks great! What did you trim and how much? What engine cover is that on the RRC?


Missed the 06' cams part, the 06 cams still will just make use of the RRC in the mid range, nothing down low. But seeing the long stroke already produces a bit more torque already over a K20, the low end would be very drivable. The mid range should be impressive as VTEC comes in.

Makes sense to me. I should have it tomorrow and will likely install it this weekend.

[Ba82Ep3]

http://i37.photobucket.com/albums/e74/vwright01/Picture220.jpg

You removed the FPD and used that as your fuel inlet? Nice lil trick. Do you happen to remember the thread or type of fitting you used?

[Slip_Angle]

Got the RRC installed, however I need some assistance. the K24a2 fuel rail doesn't work because the connector to the fuel line is right in the path of the throttle body cable. the EP3 fuel rail seems to be at the wrong angle and the injectors are under pressure when I tighten the bolts down. I see you've used the EP3 fuel rail but didn't you have issues with the angle of the injectors?

[talonXracer]

You will need to add or subract spacers to get everything sitting flush, washers work fine. I would also get two studs and put them into the mani's rail bosses. This makes lining everything up and retaining spacers/washers a piece of cake.

[Slip_Angle]

You will need to add or subract spacers to get everything sitting flush

Oddly the holes for the EP3 fuel rail just wouldn't pass the bolts so I drilled them out. it fits good now and I have the right spacers (thanks) but now the fuel rail doesn't fit where it connects to the fuel line because the Intake Air Bypass control valve is too close to it...

[talonXracer]

Then the RRC fits the same as a RBC. Both have a different spacing than the PRB/PRC/RBB mani's for the rail bosses.

[Slip_Angle]

Here's a pic of the problem. As you can see the fuel rail nozzle is right against the air bypass control valve. Not understanding why as urthworm doesn't seem to have that issue. Could it be different injectors? Mine are the stock k24a2 310's...

http://i55.tinypic.com/2ufd253.jpg

[talonXracer]

I do know a few of the K24's have a different fuel line profile. About all you can do is GENTLY bend the fuel line towards the rad at the rail end and towards the rear on the end of the line, shallow "S" bend it so the end of the line shoots the gap between the TB and the AAV.

[Slip_Angle]

I do know a few of the K24's have a different fuel line profile. About all you can do is GENTLY bend the fuel line towards the rad at the rail end and towards the rear on the end of the line, shallow "S" bend it so the end of the line shoots the gap between the TB and the AAV.

Ok, will do. Thanks for the help.

[Ba82Ep3]

Got the RRC installed...

Would you mind posting up a list of everything you needed to complete the install? The pix are great too... please dont hesitate to post em up. I can get an RRC, but dunno if the price is fair...

[Slip_Angle]

Ok, got the fuel rail done and the car is running. The manifold vacuum line? is hitting my hood -- see pic. More bending?
http://i54.tinypic.com/2zrn8e0.jpg

[talonXracer]

More bending is required,

I ALWAYS remove that vacuum nipple, and then drill and tap it for a low profile AN fitting.

http://i54.photobucket.com/albums/g96/talonxracer/IMG_0491.jpg

http://i54.photobucket.com/albums/g96/talonxracer/RBCnitrous003.jpg

http://i54.photobucket.com/albums/g96/talonxracer/RBCinstall003.jpg