I am not a fan of Unstable, nor are many people I talk to. Here are some common false answers they give requarding the RB swaps which mislead people on the whole thing. The RB swap is easy.....almost as easy as the SR20.....so here's their Q & A from their website and my response to their answers. I have done the swap more than once and know from experience what is involved with the RB engines.....here goes...I'll be looking for a response from someone from UNSTABLE-HYBRIDS if they care to stop lying to the public.
:assassin
Q: I'm interested in an RB25DET install, what kind of final price
tag are we talking about? For engine, install, tune, all parts, etc.
A: Ball park figure is $8000 turn key drive it off. We're working out details.
$8000? You've gotta be kidding right? Being that there is no custom fabrication needed to put the engine in, it's a direct bolt in, and the clips cost you what? $1800 after shipping?
Q: What is the rev limit on the rb20?
A: Right around 8000.
Really, the actual rev limiter on 5-speeds is 7200.....right around 7k, not 8.
Q: My question is, is the RB20DET worth the money.
A: Absolutely.
Too bad this engine has lower potential than any other RB engine and less torque than the SR20DET, the SR20DET swap would be far better for the money.
Q: Also, did you guys have to make the new intake for the RB20 that you have pictures of?
A: It was necessary to have a clean install, and simplifies the plumbing when a front-mount intercooler is used. It also makes plug access easier. Before, you were 1.5-2 hours from ever seeing a spark plug, now, 5 minutes.
Really, I love your guys BS....takes me 10 minutes MAX to get to my spark plugs and I have a RB25DET with stock intake manifold....you guys must work slow, no wonder you charge such outrageous prices. And it's not necessary....they do also make FMIC kits for the 20 and 25 series engines, so it don't make anything easier being how the 26 manifold requires custom or 26 piping which is made for two turbos and a 80-100mm intake plenum opening.
Q: Will local US Nissan dealers do engine work on the RB engine?
A: No, they've never heard of it or ever seen one before.
Wrong again. Nissan mechanics may not have heard about the engine before here in the states, but they will work on it being that they can cross reference things like the oil filter, spark plugs, clutch, and ignition systems to the 300ZX N/A. Other than that, it is just any other inline six...has cams and a timing belt like any other engine...why wouldn't they work on it? They used an inline 6 back in the Datsuns....
Q: I just have a question about the manifold you have fitted up to your 240sx w/ the rb20. Is this an aftermarket companies manifold, or is it a custom fabricated manifold?
A: That is a custom fabricated piece we built.
One true thing, but, it's half stock intake manifold and the rest a muffler like pipe attached to the top of it.
Q: After doing your RB engine swap, how did the 240sx handle compared to stock (better, worse, same)?
A: Just like stock.
Being that you would have used the R33 subframe in the swap, the engine sits higher in the chassis, causing an uneven balance on the front end. It is more top heavy which hinders performance.
Q: Did you have to upgrade the cooling? Would stock radiators and intercoolers be efficient enough to handle the rb engine's cooling needs?
A: Stock R32 radiator was plenty sufficient. We used a front mount intercooler.
Too bad the stock R32 Radiator is too tall to fit into the S13 240SX engine bay without modification to the hood huh?
Q: I like the body style of the 95-98 body style for the 240sx, but I am looking for time slips around very low 13's to mid to high twelve's and I also like the idea of a skyline motor, which or what would be the cheapest route to achieve that goal?
A: Cheapest route using a skyline motor? RB20DET upgraded turbo bigger injectors reprogrammed ECU LSD That would get you in to the 12s.
This is true of the RB25DET series engines. RB20DET's even with a larger turbo will not hit those numbers without more boost. RB20DET's don't respond as well to upgrades as the rest of the RB engines. They come stock with 220hp and less torque than the SR20....so, could you do a 12 in a RB20DET? Sure if you pump the boost to 20psi and add slicks...
So anyone who has asked anything of UNSTABLE-HYBRIDS, remember this, you can't believe everything you read. Big companies are out there just to make money and to sell you something you don't know that you don't need....such as their "custom engine and tranny mounts." They take advantage of you who do not know the swap or what is involved so they can take your hard earned money for you to get what you want.
Night
:assassin
Q: I'm interested in an RB25DET install, what kind of final price
tag are we talking about? For engine, install, tune, all parts, etc.
A: Ball park figure is $8000 turn key drive it off. We're working out details.
$8000? You've gotta be kidding right? Being that there is no custom fabrication needed to put the engine in, it's a direct bolt in, and the clips cost you what? $1800 after shipping?
Q: What is the rev limit on the rb20?
A: Right around 8000.
Really, the actual rev limiter on 5-speeds is 7200.....right around 7k, not 8.
Q: My question is, is the RB20DET worth the money.
A: Absolutely.
Too bad this engine has lower potential than any other RB engine and less torque than the SR20DET, the SR20DET swap would be far better for the money.
Q: Also, did you guys have to make the new intake for the RB20 that you have pictures of?
A: It was necessary to have a clean install, and simplifies the plumbing when a front-mount intercooler is used. It also makes plug access easier. Before, you were 1.5-2 hours from ever seeing a spark plug, now, 5 minutes.
Really, I love your guys BS....takes me 10 minutes MAX to get to my spark plugs and I have a RB25DET with stock intake manifold....you guys must work slow, no wonder you charge such outrageous prices. And it's not necessary....they do also make FMIC kits for the 20 and 25 series engines, so it don't make anything easier being how the 26 manifold requires custom or 26 piping which is made for two turbos and a 80-100mm intake plenum opening.
Q: Will local US Nissan dealers do engine work on the RB engine?
A: No, they've never heard of it or ever seen one before.
Wrong again. Nissan mechanics may not have heard about the engine before here in the states, but they will work on it being that they can cross reference things like the oil filter, spark plugs, clutch, and ignition systems to the 300ZX N/A. Other than that, it is just any other inline six...has cams and a timing belt like any other engine...why wouldn't they work on it? They used an inline 6 back in the Datsuns....
Q: I just have a question about the manifold you have fitted up to your 240sx w/ the rb20. Is this an aftermarket companies manifold, or is it a custom fabricated manifold?
A: That is a custom fabricated piece we built.
One true thing, but, it's half stock intake manifold and the rest a muffler like pipe attached to the top of it.
Q: After doing your RB engine swap, how did the 240sx handle compared to stock (better, worse, same)?
A: Just like stock.
Being that you would have used the R33 subframe in the swap, the engine sits higher in the chassis, causing an uneven balance on the front end. It is more top heavy which hinders performance.
Q: Did you have to upgrade the cooling? Would stock radiators and intercoolers be efficient enough to handle the rb engine's cooling needs?
A: Stock R32 radiator was plenty sufficient. We used a front mount intercooler.
Too bad the stock R32 Radiator is too tall to fit into the S13 240SX engine bay without modification to the hood huh?
Q: I like the body style of the 95-98 body style for the 240sx, but I am looking for time slips around very low 13's to mid to high twelve's and I also like the idea of a skyline motor, which or what would be the cheapest route to achieve that goal?
A: Cheapest route using a skyline motor? RB20DET upgraded turbo bigger injectors reprogrammed ECU LSD That would get you in to the 12s.
This is true of the RB25DET series engines. RB20DET's even with a larger turbo will not hit those numbers without more boost. RB20DET's don't respond as well to upgrades as the rest of the RB engines. They come stock with 220hp and less torque than the SR20....so, could you do a 12 in a RB20DET? Sure if you pump the boost to 20psi and add slicks...
So anyone who has asked anything of UNSTABLE-HYBRIDS, remember this, you can't believe everything you read. Big companies are out there just to make money and to sell you something you don't know that you don't need....such as their "custom engine and tranny mounts." They take advantage of you who do not know the swap or what is involved so they can take your hard earned money for you to get what you want.
Night