Anyone can make Rb26 manifolds fit RB25 or 20!

[fito]

I post this because I was reading another post (that whent very bad) about this , and there is a general misconception on this. First ! No they don't fit perfectly, BUT it is SUPER easy to make it fit. You only have to take out two or three studs from the RB25 head to make the twins fit. We just did it on my brother's car. A friends is doing the down pipes and as soon as it comes back I'll post pictures.

[Imissmyturbo]

What was done on the intake side since the crossover pipe would be in the way of the outlet pipe for the twins?

[Nameless EJ6]

Just curious, but what was his reasoning for wanting a twin turbo setup?

Can't wait to see the pictures. That'll be very cool if it indeed works well.

[gawdzilla]

whats the easiest way to go the other way? Twin on rb26 to single conversion? i'm considering this as an option, but can't find any decent rb26 manifolds w/o them being over $2k.

[Nameless EJ6]

I've also been wondering the same thing. Maybe there's a way to use the RB25 manifold and redesign the flange... although I'm not sure what kind of power the manifold will support, but I ahve a feeling that won't be a good idea.

It might even be worth it to make a one off manifold.. considering you could buy a decent tig welder for under 2k..

Or maybe I'll just stick with twins.. :P

[gawdzilla]

haha.. well i keep seeing HK$ manifolds appearring on ebay, just no 26 manifolds for some reason other than the ssautochrome stuff. im also leaning towards sticking with the twins. yet to make my final decision.

[goofynick6]

If I had an rb26, I'd do those twin turbos on that best motoring video where Tsuchiyo and Orido testdrive the Skyline and they're flipping out about how fast and how responsive it is..haha.Nick

[gawdzilla]

haha, those are the HKS GT2530s. not cheap, but they are direct bolt ons.

[yellow_jacket]

by leaving some studs completely off I would worry about the flanges warping.

[WDRacing]

Atleast the flanges warping...Leaving studs removed is ignorant. Especially when you say two or three. The manifold won't seal correctly, yeilding a possible fire hazard. The manifold could and probably will warp.

If you want to run twins, just send the gaskets off to JGS and have a set of mani's made. Then you can use T25's, T3's or whatever turbo's you want.

I'd stick with the single.

[BoostFab]

stay tune guys, i'm making manifolds for the 20 & 25...so expect some sneak preview soon.

[gawdzilla]

stay tune guys, i'm making manifolds for the 20 & 25...so expect some sneak preview soon.

how about an rb26 single turbo manifold?

i'm really torn as to what to do w/ my turbo situation right now... after seeing a few not so promising dyno results (http://www.uniqueautosports.com/dyno.htm) of the r34 n1 turbos, im having 2nd thoughts about keeping the twins.

basically all i have is 1 aftermarket turbo, 2 hks dump tubes (stock bolt-on to gtr so they will only fit N1, gt2510, gt2530, gt2540, gt-rs, gt-ss, and maybe some apexi/greddy bits). I'm willing to go single if I can find a good manifold for a DECENT price. best non-ssautocrap one i see is 2.4k from full-race opinions/guidance appreciated, thanks!

[CKs240sxNC]

Is the rb25 and rb26 mani's the same length? as far as from left to right i mean..If so you might be able to fab the two together, take the bracket from a rb26 and weld it on the rb25, just an idea, dont know if it would work , id have to see both of them and compare sizing...

[fito]

IGNORANT!? SO Iam an ignorant guy that has worked on four different 240's, that has a RB25 with 600hp@wheels and inthe prosess of building a Rb26 with N1 turbos. O YES IAM IGNORANT! M@r@n.

You'guys will see how is done when I take the pics. This setup has been used for two year on my friend's Rb20 with 400hp with no LEAKS (but I gess Iam an ignorant) and there exactly two studs to be removed.

We are using Twin turbo setup because you can get the same amount of HP with better responce and on the intake were are using Greddy intake manifold.

Excuse me for going back on the ignorant issue, but what the F+ck you drive? How do you call ignorant, something you haven't even seen?

[gawdzilla]

hey fito, how much wheel hp are you guys hoping to make with the rb26 w/ n1s? i'm still shopping for turbos/manifolds

[fito]

Well, the N1's are basically garrett gt28r turbos. These turbos are rated @ 280hp max each, wich makes 560hpmax. I plan on taking it to 500hp with a superb spool-up, Mine's R34 style! yeah rigth!

[BoostFab]

how about an rb26 single turbo manifold?

the rb26's will also in be in the to do list.

[WDRacing]

Excuse me for going back on the ignorant issue, but what the F+ck you drive? How do you call ignorant, something you haven't even seen?

I lived in Asia for 6 years dude. I owned 2 Skylines while I was over there. SO you can eat a d!ck with your attitude.

You can take your "IN MY OPINION" Ignorant idea's of leaving studs out and ask any other mechanic if they think its a good idea. Drop by a pro drag event and see what the crew cheifs think of it, Drop a line to UTI and see if they think its a good idea.

I'm sorry if I ruffled your feathers man, but if I feel somthing is ignorant then I'm going to say so. I've also built many RB series motors. I've been a helicopter mechanic in the USAF for 12 years. I have more certifications then you can wag a stick at. So I think my opinion is fairly valid to say the least. I just don't want any of the NICO members to think its ok to not install criticle parts just to make somthing fit.

Loosen up, don't be such a cry baby just cause somone wasn't all googoo cause you have a nice car. There will always be someone faster and better.

WD

[Nameless EJ6]

I just want to see pictures.

[yellow_jacket]

IGNORANT!? SO Iam an ignorant guy that has worked on four different 240's, that has a RB25 with 600hp@wheels and inthe prosess of building a Rb26 with N1 turbos. O YES IAM IGNORANT! M@r@n.

You'guys will see how is done when I take the pics. This setup has been used for two year on my friend's Rb20 with 400hp with no LEAKS (but I gess Iam an ignorant) and there exactly two studs to be removed.

Excuse me for going back on the ignorant issue, but what the F+ck you drive? How do you call ignorant, something you haven't even seen?

What anyone drives has nothing to do with improper installation and bad practice. As far as you having worked on 4 240's, wow that number is HUGE!

I worked as a Tech for 5 years and I am a Mechanical Engineer. Guess what, I've worked on more cars than I can even come close to remembering, built more race motors than I can remember, and I can back all of this up with theory. So your little I've worked on 4 240's doesn't mean anything to me. I would suggest that you take the advice of people who know more than you and don't throw a tempertauntrums when you're obviously not right.

[fito]

So lived in Asia wooohooo... SO! I gess that makes you a professional!

Anyways, I jumped because calling me an ignorant for something you haven't even seen and I haven't given the complete explanation waiting for pics; That's ignorant. @ssholes, talk first , then look for information.

Anyone with something inside there head would know that this is a fix for something it doesn't fit. So it's not going to perfect. When you see the pics you'll see that there is a bolt that go's were one of the studs go that hold's the flange, so there will be no warping, This is wy I jumped! because your calling ignorant something that was done using your same (I lived in Asia and owned two skylines ) knowlege!

People like you and (who ever gave you a candle in this burial) Yellow Jacket make alot of people no waset there time posting info for fellow RB owners. I posted this info since someone was asking about this setup and everyone said it could not be done , and it CAN be done.

Yellow jacket: I ask what he drive and now I ask YOU because you guys are so technicaly educated, that you must have great machines. I have seen this so many times before, guys that criticize others ideas or work but they have NOTHING!. I was not bodered by your commentary: (by leaving some studs completely off I would worry about the flanges warping.) because that is the correct way of delivering the messege not calling me ignorant.

After saying all this and feeling better I am droping this and not comment anymore on the issue. I'll try and take the pic now, before I get on a plane to Orlando today to see the "battle of the imports". peace.

[WDRacing]

So lived in Asia wooohooo... SO! I gess that makes you a professional!

Anyways, I jumped because calling me an ignorant for something you haven't even seen and I haven't given the complete explanation waiting for pics; That's ignorant. @ssholes, talk first , then look for information.

Anyone with something inside there head would know that this is a fix for something it doesn't fit. So it's not going to perfect. When you see the pics you'll see that there is a bolt that go's were one of the studs go that hold's the flange, so there will be no warping, This is wy I jumped! because your calling ignorant something that was done using your same (I lived in Asia and owned two skylines ) knowlege!

People like you and (who ever gave you a candle in this burial) Yellow Jacket make alot of people no waset there time posting info for fellow RB owners. I posted this info since someone was asking about this setup and everyone said it could not be done , and it CAN be done.

Yellow jacket: I ask what he drive and now I ask YOU because you guys are so technicaly educated, that you must have great machines. I have seen this so many times before, guys that criticize others ideas or work but they have NOTHING!. I was not bodered by your commentary: (by leaving some studs completely off I would worry about the flanges warping.) because that is the correct way of delivering the messege not calling me ignorant.

After saying all this and feeling better I am droping this and not comment anymore on the issue. I'll try and take the pic now, before I get on a plane to Orlando today to see the "battle of the imports". peace.

Do me a favor, your post is a bunch of garbled thoughts typed very badly and in a hurry. I can't tell what parts are directed at me and which ones aren't.

I only mentioned I lived in Asia and owned two Skylines because you asked what I drove. Therefore insinuating I had no RB knowledge. I have worked on RB's for 4 years straight while I lived on Okinawa. Not just the two I owned.

In your original post, you just said you left out some 2-3 studs to make things fit. You didn't mention any bolts added or anything else for that matter. Is this your way of helping NICO and fellow RB owners? If it is, you can stop, and you won't be missed. This forum has a bunch of experienced mechanics who own RB's already. Not to mention a few dedicated Nissan Techs who can be asked just about any question you can dream up. So get off your soap box kid.

If you don't want to post anymore here or in this thread, thats your choice. I can't say it'll bother me. I like to have the last word anyway. Have a safe flight.

WD

[yellow_jacket]

You think I don't have anything to drive? I've got an RB25 and a SR. I guess if you want to go outside of Nissans, I've also got a Prelude with a built motor. So trust me, I am in no way envious of you and in no way does owning cars equate to knowledge or good practice.

As far as why people don't like your post. Its very easy, you posted incorrect information for everyone to search the boards and find. Now in retrospect you are coming back and trying to say that you didn't leave thing unbolted and then telling us that we didn't look for the information. You stated what you did, we told you what was wrong with it.

Have a nice life.