How To: Rb26 Plenum On Rb25

[Kaido_RR]

How To Install Rb26 Plenum (Intake manifold) on an Rb25det

*work in progress*

What is needed:

-Complete Rb26 Intake Manifold (inc fuel-rail, injectors)

-Blitz Adopter Kit or similar

-Intake-side i/c piping

-various hoses (fuel lines, heater hoses, coolent lines)*

-Rb25 and Rb26 Intake manifold gaskets

first set is to completely remove the rb25 intake plenum, i found to make the job easier it was best to remove the throttle body.

now this is what it should look like once you remove the stock plenum

next was a trail fit the 1st adopter plate

next you need to remove the 2 studs; one is far right the other on the far left (i removed them by using a vice-grip)

the stud removed

the next step is IMPORTANT, because the GTR doesn't have the VCT, the VCT solenoidal hits on the 26 plenum

to solve this problem, the water hose section on the rb26 plenum must be chop off and replaced with the 25 water hose section

*Im still waiting for this to be done and will update once i get the plenum back*

[WilYawn]

Any updates?

[Craved]

as above and where can you buy the adapter kits?

[FineLine]

Contact Shanef, He makes them in billet alloy.

[Tave-33]

Also keen for the updates but I was also wondering who shanef is and how do I contact him?

Does anyone kno why there is two seperate plates? I would hav thought one plate with one set of holes to go into the 25 head and one set for the 26 intake would have been enough??

[shanef]

im shanef

reason theres 2 plates that theres 2 separate bolt hole configurations. 1 for the rb26 plenum and 1 for the rb25 head.

[H@ME]

great topic guys should be moved to the D.I.Y section! putting this in my fav's! I'd do it if didnt do the greddy style install

[GTS4WD]

+1 for more updates.

My old man and I are looking into doing this conversion soon as well.

[dkslong]

so which route is cheaper this way cuz I can buy a GTR plenum for like 50.00 bucks or I can buy the greddy kit 800 bucks comes with everything

[dkslong]

http://forums.nicoclub.com/zerothread/307325 some1 has full details and finished here if u need guidence

[dano4127]

so which route is cheaper this way cuz I can buy a GTR plenum for like 50.00 bucks or I can buy the greddy kit 800 bucks comes with everything

If you can get one for 50 bucks with the ITB's I will give you $100 and you just made yourself an easy $50

[dkslong]

If you can get one for 50 bucks with the ITB's I will give you $100 and you just made yourself an easy $50

Try this website I go here lots to look for parts.If I cant find it here then it means I have to go to the junkyard. http://www.slidewizeimports.com/

[Kaido_RR]

so which route is cheaper this way cuz I can buy a GTR plenum for like 50.00 bucks or I can buy the greddy kit 800 bucks comes with everything

buy a greedy kit;

The gtr plenum isn't as cheap as it might seem

you have

Gtr plenum

Gtr fuel rail + gtr injectors + gtr injector plugs + gtr resistance pack

New Intercooler Piping

Adopter kit

GTR throttle cable or make a bracket to mount the gts-t throttle cable on the gtr plenum

GTR plenum gaskets

If you are lucky to find a blitz adopter kit it makes it alittle easier but it is no way a straight forward job, im taking the new out as its going to make it about 10x easier to get the job done.

Also even with the blitz adopter kit you still need to do some welding

(cut and remove the water outlet on the 25 plenum and cut the 26 water outlet off and weld on the 25 outlet)

as above and where can you buy the adapter kits?

i was lucky to find a brand new blitz kit from japan but blitz stop making them in 2005 i think and they are extremely rare to come by.

the difference between the blitz kit and the other ones is the blitz one comes with more than just the adopter plate it comes with adopter for the TPS and ACC value

Also updates have been lacking because i lost interest lol, but i have made the choice to take it to a friends workshop so that i can have the engine remove as it will speed up the job and make it 100% easier.

Hopefully i should have some updates next week

Edited November 11, 2008 by [Michael]

[Craved]

cool cool - theres a blitz kit on ebay right now lol

[Kaido_RR]

cool cool - theres a blitz kit on ebay right now lol

lol just check it out, i don't know how the person pay $1400 for it. as they were 80,000yen brand new and around the same price alittle less (60,000yen - 80,000yen second hand).

If you add up the cost it works out alot cheaper to do the greddy plenum.

$800 for adopter kit

$300-$600 for complete gtr plenum inc fuel rail

$500-$800 for gtr injectors (basing on 600cc size)

gaskets kit $200

Gtr injector plugs $25

Gtr resistor pack $150

Gtr throttle cable ???

Welding $150

Fitting ???

you must have an aftermarket ecu and then of course the cost of retuning

[dkslong]

buy a greedy kit;

The gtr plenum isn't as cheap as it might seem

you have

Gtr plenum

Gtr fuel rail + gtr injectors + gtr injector plugs + gtr resistance pack

New Intercooler Piping

Adopter kit

GTR throttle cable or make a bracket to mount the gts-t throttle cable on the gtr plenum

GTR plenum gaskets

If you are lucky to find a blitz adopter kit it makes it alittle easier but it is no way a straight forward job, im taking the new out as its going to make it about 10x easier to get the job done.

Also even with the blitz adopter kit you still need to do some welding

(cut and remove the water outlet on the 25 plenum and cut the 26 water outlet off and weld on the 25 outlet)

i was lucky to find a brand new blitz kit from japan but blitz stop making them in 2005 i think and they are extremely rare to come by.

the difference between the blitz kit and the other ones is the blitz one comes with more than just the adopter plate it comes with adopter for the TPS and ACC value

Also updates have been lacking because i lost interest lol, but i have made the choice to take it to a friends workshop so that i can have the engine remove as it will speed up the job and make it 100% easier.

Hopefully i should have some updates next week

yea i did more researching at my homboys auto shop injectors are expense.LOl ima do the greddy plenum comes with everything cept the pipe but NP I can buy the pipe from garageoff for like 10 bucks ^^ I LOVE JAPAN so I am lookin at about 850 bucks plus my own time and labor lol

[Adriano]

lol just check it out, i don't know how the person pay $1400 for it. as they were 80,000yen brand new and around the same price alittle less (60,000yen - 80,000yen second hand).

If you add up the cost it works out alot cheaper to do the greddy plenum.

$800 for adopter kit

$300-$600 for complete gtr plenum inc fuel rail

$500-$800 for gtr injectors (basing on 600cc size)

gaskets kit $200

Gtr injector plugs $25

Gtr resistor pack $150

Gtr throttle cable ???

Welding $150

Fitting ???

you must have an aftermarket ecu and then of course the cost of retuning

But by your analogy the greddy kit isnt cheap either,

$1100 for the plenum(they have probably gone up with the dollar)

$200 Q45 throttle body

$100 Gaskets

$??? S13 throttle cable

$800 Upgrade injectors

$??? Fitting

$??? Intercooler piping

ECU and tuning still apply. Althoug you could run either setup on a remapped ecu

[dkslong]

But by your analogy the greddy kit isnt cheap either,

$1100 for the plenum(they have probably gone up with the dollar)

$200 Q45 throttle body

$100 Gaskets

$??? S13 throttle cable

$800 Upgrade injectors

$??? Fitting

$??? Intercooler piping

ECU and tuning still apply. Althoug you could run either setup on a remapped ecu

seems like this guy didnt pay much http://www.skylinesaustralia.com/forums/to...um-t181826.html but this looks like a pain and something expensive for which i dont need now.I will probably finish up basic bolt ons like a high flow cat and dump pipe and headers.If I stil have a skyline lol currently looking at a S15 or a toyota Chaser tour v I might do the swap.AND MY WEBSITE DIEDDDDD READ THERE COMMENT TEARSSSSSS but I can still look on yahoo auctions but its more of a pain to find what I want lol.http://www.slidewizeimports.com/ closing down because of the economy

Edited November 12, 2008 by dkslong

[Kaido_RR]

But by your analogy the greddy kit isnt cheap either,

$1100 for the plenum(they have probably gone up with the dollar)

$200 Q45 throttle body

$100 Gaskets

$??? S13 throttle cable

$800 Upgrade injectors

$??? Fitting

$??? Intercooler piping

ECU and tuning still apply. Althoug you could run either setup on a remapped ecu

china spec greddy plenum $200-$300

adopter to use stock throttle body $50

use old gaskets

use stock cable

use same injectors

trust me it will work out alot cheaper.

(i was quote over $2000 to install the gtr plenum lol)

[Tave-33]

Just wondering if you have any updates on this as I am about to have a go at it myself??

I'm just hoping I can get it to all work alright I just wanna feel that throttle response