Rb26 Itb's And Plenum On To Rb25 Or Rb20

[darrinspencer]

I found this inlet manifold adaptor to fit Rb26 inlet plenum and ITB's on the Rb25's plus they do a Rb20 version

At first I thought they did the old cut and weld option onto a rb25 inlet runners, but it is different

Then I thought they had done a cut and weld onto a rb25 greddy style inlet manifold, but no

I think they have made up a new casting with mounting plates to bolt the ITB's onto and have made a remote seperate IAC box. It does away with the rb26 injector section of the inlet.

The attached pic's are are R34 Rb25det version.

Having a close look at the adpator it looks the same a greddy style manifold around the injectors ports and mounts. The flange onto the ITB's looks to be a 1 piece casting, ie not welded onto the runners.

Also the reason I think it is not a greddy style manifold is the angle of the radiator hose connection.

It is square like a factory manifold and not at a angle like the greddy.

The main negative problems with either the Blitz style adaptor plate is the angle of the injectors and the cut and shunt to stock manifold is the different runner spacing and angles.

With this version they seem to have solved those issues, I can not see any problems or disadvantage with this design

Cost is not cheap at approx $700-750 plus post form Japan etc.

Does not include the rb26 setup, so add $300-400.

Your thoughts??

I have Neo rb25det with greddy style manifold already, but would luv ITB's with VCT

Edited August 3, 2011 by darrinspencer

[dori34]

mate that is a good find!

same price what i paid for my CPC plenum too......

how come the iac mount only was one opening where stock has two with a divider piece in the middle?

(or is 1 all thats needed)

[rad100]

got a link to the place who sells the adaptor?

might ditch my plazmaman for this setup.

[dori34]

^ dude, try CPC plenums.

[darrinspencer]

^ dude, try CPC plenums.

Why

They don't do one with ITB's???

[dori34]

Why

They don't do one with ITB's???

well he did go plazmaman so might be another option for him if he wants to fit injectors without issue

but yes, ITB would be the ideal setup.

[Simon-S14]

any more info on these??

[R31Nismoid]

Thats about $200-$300 cheaper than the Blitz one that was discontinued.

So if it fits decently then $700 isn't a bad price for the adaptor

[Johnny_B]

where do i find more information? and purchase one of these manifolds?

[Simon-S14]

Thats about $200-$300 cheaper than the Blitz one that was discontinued.

So if it fits decently then $700 isn't a bad price for the adaptor

thats what i was thinking

[darrinspencer]

I found them on Yahoo. I think it will be close to $950-1000 landed

http://www.importmonster.com.au/view?url=http://page6.auctions.yahoo.co.jp/jp/auction/f101401033&thumb=http://f6.auctions.c.yimg.jp/img321.auctions.yahoo.co.jp/users/2/4/5/6/assemble2006-thumb-1297139207470101.jpg&title=RB25 NEO6 GTR KIT

As mentioned, they do a Rb20, R33 Rb25 and R34 Neo kit.

No mention on the company who makes them

They look similar quality to the other cheap chinese greddy styles manifolds.

They only cost approx $150 wholesale price in china for example.

Might try and find the supplier/manufacture as I have a few contacts and inport some parts from china now.

I currently run the greddy style copy on my Neo with gt3076r

I am very keen to try one of these out and do back to back test.

It won't be be for at least to 6-8 weeks thuo.

I can't really see any negatives with this setup?

Anyone have any idea's??

Edited August 8, 2011 by darrinspencer

[rad100]

i havent found a kit that lets you retain vct.

[darrinspencer]

i havent found a kit that lets you retain vct.

Not sure what you mean there?

I have VCT on my Neo with greddy copy manifold

[rad100]

i mean when you run the rb26 ITB's it apprently eliminates the vct.

[darrinspencer]

i mean when you run the rb26 ITB's it apprently eliminates the vct.

I think that would happen when you use the full Rb26 intake with injector section and an adaptor plate as it would foul the VCT solnoid>

This kit is cast the same way, ie rad hose connection as the Rb25 manifold so it will clear the VCT. win win.

I have just email Aaron at IM to see if he can contact the seller and find out more info.

[rad100]

good lad, will be watching this closely.

[Johnny_B]

i found these on yahoo yesterday also after posting my comment.

although i could only find kits for rb20 and neo rb25

my rb25 is a s2 r33 engine.

definitely do more research into where the manifold is made, im eager to purchase asap

[XRATED]

Shurely it would be cheaper to buy a copy greddy manifold, chop the runners off, weld on a rb26 itb flange???

1k is pretty exxy to get itb on your 25?

[Chi100188]

I have the blitz adapter plates on my car and still retain the vct

[Raysboostin]

any more info on it darrin??