Does anyone thinks its possible to do a RB26DETT conversion to a 240sx? Has anyone ever heard of this, i mean transmission, awd, and all. It sounds crazy but it would be awsome.
nismo_1
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G
yes, go to FreshAlloy.com and find a member by the name of "osofast240" check his profile click his link for his site and ull see it.
The RB26DETT uses the same block as the RB25DET. A lot of people think firewall modification will be needed to fit an RB26DETT, but the RB25 can get in there without a problem, so why not the 26?
For RWD you will have to use the RB25DET Transmission. You will have to convert to single turbo because of the steering column, a few other things as well....
People have swapped RB25's in a day, I think people overreact when they hear about the 26... it can be done, and not THAT difficult....
For RWD you will have to use the RB25DET Transmission. You will have to convert to single turbo because of the steering column, a few other things as well....
People have swapped RB25's in a day, I think people overreact when they hear about the 26... it can be done, and not THAT difficult....
Number one, turbos don't use headers, they use manifolds. Number two - Running a TT setup ina 240SX would require modifications to the steering assembly as the steering rod would not be able to go through a downpipe. Number three - going twin turbo wouldn't be the best or easiest way. Single turbo would be better as it is used in most of custom race cars.NIF said:nope twin turbo, just custom headers, intake pipes, and intercooler pipes but otherwise its pretty straight forwardoh one other thing is that you will also need the rb25 oil pan and pick-up
As far as doing the AWD conversion, it is possible. The Skyline and 240SX use almost the same suspension setup minus the 5 lug hubs. You would need to switch to the Skyline Suspension in order to do the swap correctly, and you would want to get the matching rear end so that you have equally geared differentials.
As far as having to go with a RWD tranny, that's a fallacy. You can remove a chip in the RB26DETT that allows only the rear to spin. you can also disconnect the driveline shaft for the front differential if you choose to which will allow the transmission to run RWD.
The RB25 and RB26 are virtually the same engine internally. They both have the same sized pistons and same block, but the RB26 has a longer stroke which ups displacement and lowers your compression ratio. The RB26 head also has a better spring/valve combo than the RB25 head does. The RB25 head springs are rated at 39 pounds from what I heard last. It would make more sense to do the head conversion on a RB25DET with intake manifold, and would probably be less costly in the long run, but just my two cents.
Night
NightXCZ77 said:
O.K. so I guess the CART car that I work on doesn't have headers ? untrue the reason for the custom headers is so that I don't have to modify the steering. You can use the rwd tranny as I have personally ridden in a gts with the rb26 I'll post more later but I must go to work at the race shop. But it seems to me night that yet again you are spreading untrue rumors, please don't.
Ok, big deal about the headers part, everyone debates about that, its common, and NOT a rumor or an untrue rumor at that. On everyday turbocharged cars, the exhaust tubing that goes from the head to the turbo is known as the turbo manifold, and Nissan also refers to them as "turbo manifolds" if you try to order this part from them. It depends what you are working on, in your case a CART. Please don't say he is lying because he never said that you CAN'T use the RB25 tranny on the RB26. He was just defending that you CAN use AWD in the 240 with the RB26. Now I understand why Night has so much frustration over the people who make RB swaps sound harder then they really are...
Keep the flames to a simmer...
Keep the flames to a simmer...
No, the 2.5 and 2.6 share blocks, which is why many people in japan and australia with 2.5's swap out for a 2.6 head for better flow and compression(2.6 head wont fit on a 2.0). What was said earlier is correct by another poster, they are essentially the same block with different heads and crankshafts (longer stroke).
I didn't say the 25 tranny couldn't be used, I said it was false that it had to be used. It is very true, I do not like all these rumors about what has to be done because it scares people away from doing these swaps. The only way to have an actual "header" on a Skyline engine is to go with one that is naturally aspirated, such as the RB25DE or RB20DE, but, the RB26 never came naturally aspirated. And Itzgen is correct about the manifolds, they are called turbo manifolds, they connect to a downpipe, the turbos are also mounted on an exhaust manifold. Please don't speak rumors about these swaps....not you Itzgen, everyone elseItzGenX said:Ok, big deal about the headers part, everyone debates about that, its common, and NOT a rumor or an untrue rumor at that. On everyday turbocharged cars, the exhaust tubing that goes from the head to the turbo is known as the turbo manifold, and Nissan also refers to them as "turbo manifolds" if you try to order this part from them. It depends what you are working on, in your case a CART. Please don't say he is lying because he never said that you CAN'T use the RB25 tranny on the RB26. He was just defending that you CAN use AWD in the 240 with the RB26. Now I understand why Night has so much frustration over the people who make RB swaps sound harder then they really are...
Keep the flames to a simmer...
Night
AWD 240's would be bad ass, that will probably be my next project if I don't do it sooner on my current car. The only thing I am wary of is the extra 175 pounds that would be on my front end. With the correct reductions and weight transfers you could probably pull off an even 50/50 weight distribution which wouldn't be too bad.... If anyone has pictures of the RB26DETT swap in a 240SX that they did themselves, please post them. As for me, I'm just converting my 25. I am throwing the RB26 head and intake manifold, fuel rail, injectors, etc... on with a metal headgasket so that I can boost like crazy.
Night
If anyone has pictures of the RB26DETT swap in a 240SX that they did themselves, please post them. As for me, I'm just converting my 25. I am throwing the RB26 head and intake manifold, fuel rail, injectors, etc... on with a metal headgasket so that I can boost like crazy.Night
G
the HKS 180 has an rb28!
thats fuckin awesome!
also, i think its RWD, look at the front tires if you dont beleive me
thats fuckin awesome!
also, i think its RWD, look at the front tires if you dont beleive me
Night,
My previous post might have been worded a little strong. I appologize. Yet it seems all of the posts of yours that I've read have been defamatory in nature. The header/manifold issues is splitting hairs, I typically refer to a welded tubular piece as a header. I also missread you comment on the tranny, all appolgies. But I do wonder about one thing why would you want to A: have all of the extra weight and B: increase parasitic loss in the driveline?
Now allow me to touch on why I'm doing the swap I'm doing.
My intention is to develop a kit for the installation of the rb series motors however anyone would want it. The initial install will be twin turbo with the rear drive tranny. I personally don't think the 2.6L has enough displacement to support twin turbo's, but if one of our customers wants twinies well thats what I'll give them. Soon after the install is complete I will convert to single turbo, not for power reasons as much as developing the header for such an install, this will also provide a pattern for the 2.5L and 2.0L. Once that is done I will be installing one of our Microtec systems along with quite a few other goodies from our catalog (including our intake, intercooler, etc.). This car/project is the test mule for a lot of neat things we will be offering here in the states. One word of caution though before you try to go awd. Take a long look at both front suspension set ups and check out the differences, while they are indeed similar they also vary in some important aspects. Furthermore while driveline parts are pretty forgiving animals the dynamics of suspension requires such finness that I feel (opinioin) the awd swap would never be completely correct.
Tahnks,
Dan Rushing
Sub-Zero Performance
My previous post might have been worded a little strong. I appologize. Yet it seems all of the posts of yours that I've read have been defamatory in nature. The header/manifold issues is splitting hairs, I typically refer to a welded tubular piece as a header. I also missread you comment on the tranny, all appolgies. But I do wonder about one thing why would you want to A: have all of the extra weight and B: increase parasitic loss in the driveline?
Now allow me to touch on why I'm doing the swap I'm doing.
My intention is to develop a kit for the installation of the rb series motors however anyone would want it. The initial install will be twin turbo with the rear drive tranny. I personally don't think the 2.6L has enough displacement to support twin turbo's, but if one of our customers wants twinies well thats what I'll give them. Soon after the install is complete I will convert to single turbo, not for power reasons as much as developing the header for such an install, this will also provide a pattern for the 2.5L and 2.0L. Once that is done I will be installing one of our Microtec systems along with quite a few other goodies from our catalog (including our intake, intercooler, etc.). This car/project is the test mule for a lot of neat things we will be offering here in the states. One word of caution though before you try to go awd. Take a long look at both front suspension set ups and check out the differences, while they are indeed similar they also vary in some important aspects. Furthermore while driveline parts are pretty forgiving animals the dynamics of suspension requires such finness that I feel (opinioin) the awd swap would never be completely correct.
Tahnks,
Dan Rushing
Sub-Zero Performance
Oneline
Its would'nt be impossible to do such a conversion, I have seen some real difficult propositions come to fruitation, some ran well some cost others their life. Yeah do it but carefully plan plan plan it out properly,and then plan again. Its not all that bolts up or look the same that you can say YEAH I can do that too. Things such as balance, metallurgy, braking, suspension, are amongst some of the things to be considered when doing this rb26/240sx swap. I have been involved in a few conversions myself and have found that it was not how I thought it should work the way is worked.
I have some pic's here of a monster rb25det that I had a hand in wiring up the electromotive TEC III but unable to load any of them. It was a real beautiful job, you guys would love it.
Its would'nt be impossible to do such a conversion, I have seen some real difficult propositions come to fruitation, some ran well some cost others their life. Yeah do it but carefully plan plan plan it out properly,and then plan again. Its not all that bolts up or look the same that you can say YEAH I can do that too. Things such as balance, metallurgy, braking, suspension, are amongst some of the things to be considered when doing this rb26/240sx swap. I have been involved in a few conversions myself and have found that it was not how I thought it should work the way is worked.
I have some pic's here of a monster rb25det that I had a hand in wiring up the electromotive TEC III but unable to load any of them. It was a real beautiful job, you guys would love it.
NIF - you are correct, the AWD does add quite a bit of weight, about 175-200 pounds with axles, possibly a little more. This, however, would be insignificant to those wanting to go balls to the walls with that engine. If you were running 500 HP, it really wouldn't matter too much and you could get an awesome launch in a drag. I personally would do the conversion for fun, just to have for the track if I wanted to use it. The RWD is a better setup in the 240's only because it is easier. The suspensions share many similarities and you can bolt the Skyline front suspension on without too much hassle.
As far as my posts being defamatory, I would have to dispute that statement and say that they are not defamatory, they are informative. As far as Unstable-Hybrids post goes, I wrote what I had to say, many responded, then they did as well. We all made our points and I finished with a strong point that has not yet been written back to by Unstable. Defamatory is only if you are saying something that isn't true about another to bring his persona down. It is not, however, when you are calling on a company based on a mis-representation of information. And, as far as the car community is concerned, if it connects to a turbo - it's a manifold, if it's naturally aspirated - it uses a header. Use whatever methods you wish to call a manifold a header, but it will always remain a manifold.
Night
As far as my posts being defamatory, I would have to dispute that statement and say that they are not defamatory, they are informative. As far as Unstable-Hybrids post goes, I wrote what I had to say, many responded, then they did as well. We all made our points and I finished with a strong point that has not yet been written back to by Unstable. Defamatory is only if you are saying something that isn't true about another to bring his persona down. It is not, however, when you are calling on a company based on a mis-representation of information. And, as far as the car community is concerned, if it connects to a turbo - it's a manifold, if it's naturally aspirated - it uses a header. Use whatever methods you wish to call a manifold a header, but it will always remain a manifold.
Night
So are you the end all say all for the automotive community? The racing/automotive community I work in calls them headers, but again lets not spit hairs. Neither is incorrect.
Yes 175-200lbs is significant thats about 5% of your total weight plus a good bit of that has to be turned by the motor which is less power to the ground. I tell you what go ahead and try to "bolt-up" the skyline suspension. You won't I guess you didn't go look closely at both of them.
Defamatory is any comment made to disredit be it true or untrue. Look it up. But its suspicious when you in the ssame thread say that unstable overcharges and spreads untruths then just happen to mention that you too have a business. Beyond that when asked you won't even disclose your name or you businesses name. I guess I question you tactics, and business ethics. Lets have no further interaction. But go ahead and have the last say so you can feel better.
Neither is incorrect.Yes 175-200lbs is significant thats about 5% of your total weight plus a good bit of that has to be turned by the motor which is less power to the ground.
I tell you what go ahead and try to "bolt-up" the skyline suspension. You won't I guess you didn't go look closely at both of them. Defamatory is any comment made to disredit be it true or untrue. Look it up. But its suspicious when you in the ssame thread say that unstable overcharges and spreads untruths then just happen to mention that you too have a business. Beyond that when asked you won't even disclose your name or you businesses name. I guess I question you tactics, and business ethics. Lets have no further interaction. But go ahead and have the last say so you can feel better.
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