anyone runing an rb25det on their 240sx.. I want to know Why so many people do not like the swap.. I have seen so many negative coments about the swap does anyone have done it. tha can give their opinion. I know the rb have a lot more torque and capable of 550 to 560 hp on stock internal but what are the disavantages....

 

Do a search or you will get grilled by TR's finest. But Im am not one to grill so basically the RB makes the 240sx nose heavy to start...it adds what some say up to 200+lbs in the front from the motor and tranny being so beefy.

Second, parts are very very hard to come by...for example, its been said that it can take up to 3 months to get a factory waterpump, gasket, etc as most of the parts have to be ordered from Japan.

3rd, the parts are typically 3 times as much as the say, SR parts because of availablity, demand, etc. It can handle a good amount of hp and tq, but so can the SR for example. Taylor at XAT has done 2 I believe and says its hard to drive and if drifting is your cup of tea, forget about it. I had the same questions a while back and we had a good debate on it...do a search and look it up.

XAT will do the swap for you, but its going to cost some cheese. Also, from what I've heard, its somewhat hard to get tuned around these parts because most shops around here dont deal with RB's. So thats another issue altogether.

I think its still a good idea and I plan to do it, but Im going to do my first 240 with a SR then my second S13 or S14 with a RB as a project possibly.

Also, I believe the pistons in the RB25 can handle a good amount of power, but I've read a few places that they arent too good with high hp...but Im not 100% sure.

For the money you spend on a RB, its said that instead of having 4 times as much going wrong, you have 6, and for the money you put into a RB, putting the same amount of money into a SR will give you far better results.

Good luck.

 

well is too late for me to go with an sr because xatracing is working on the rb wright now.. but I see the motor in the car and love the it looks there is big but I am a drifter I just going to 1/4 mile power so I have big plans to rebuilt the internal with forge pistons and add a hks 3040 turbo and see what hapens.. any words on a suspension that can help suport 10kgm in the front...

 

Is that your RB their working on, if not then why would it be too late?...I think Mattback said in a eariler post that Apexi makes a complete Coilover kit. He said it can make anything handle like a champ. Check out this site for info But if you got the money to do a RB, then $$$ might not be an issue for the suspension.Apexi World Damper Kit

 

yeah that is the my rb with the greddy intake manifold on it.. I did not like the stock manifold is too ugly... but I will take a look and see the coil over I am already working hard to earn the money to buy them... I was thinking about the tonabee pro dd have hear anything about them...

 

Pretty much anything Tanabe makes is built pretty well IMO, but I also think they are pretty stiff for daily driving. Or maybe thats just the Tein's. I was checking your car out yesterday, looks pretty good, that football intake is MASSIVE. But it does more than just look pretty, it helps clean up the intercooler piping and allows for better clearance. If your in tampa, then maybe you can let some of us who were/are thinking about a RB swap take a drive to determine the debated issues personally

 

search........................................

 

I am in clearwater but I will be coming to tampa on 7th of march for the meet in dale mabry. I will settle the argument when I drive it for a while...

 

word on the street is stock block sr's are more than capable of 550+ hp with the right tuning *choughscottcoughcough*

 

Ah, but if you want more, there is no replacement for displacement. Well, except that the stock rb25 supposedly only takes about 600 to the wheels. But if you built it, I would have to guess that it would make more hp at a more usable rpm than an equally built sr, even with 700+ hp sr's in Japan.