I believe this is a yesbigblak06 wrote:do rb25 and rb26 you the same motor mount kit
I believe this is a yesbigblak06 wrote:do rb25 and rb26 you the same motor mount kit
sorry but there different. i know this from seeing it myself. my freind has rb25det swap(mckinney mounts) in his s13 coupe and his mounts are completely different to my RB26 mckinney mounts. now the tophat garbage mounts are suppose to have all 3 rb mounting points but the mounts are real poor qualitly from what ive seen.Kalypso wrote:
I believe this is a yes
not a problem, im glad he got the right answer....HxC_Nismo wrote:
sorry but there different.
kalypso i got a question for you, can you get on AIM for a sec?Kalypso wrote:
not a problem, im glad he got the right answer....
any answer on my original post above?
you should be slapped for question number 32fast4urass wrote:1. R34 engines are easy to find on ebay but cost around $8,000
2. can you put HICAS on a regular 240sx
3. how would i make a 240sx all wheel drive
Very nice bro, you broke that down very well. I have a S14 rb25 with upgraded turbo and aem ems and some other stuff, and i love it. I made 447hp and 400 ft lbs at 23 psi. I would love to have more power but it is a monster and sounds awesome.krayton wrote:Ok here it is. Im thinking we make a faq comparing all the engines. Now we know the rb26 is top, and the rb20 is bottom. Lets just shoot some info out on all the engines to help other people decide on engines. Also lets leave price out of comparing engine to engine cause that always turns into the deciding factor anyways. Everyone shoot there feelings or good info on a specific engine. I can edit it in to make it easier. try not to get in arguments. if you disagree just say so. no need to make a fuss about it. Mod is gonna be strict on this one to make it clean. damn right i am. if this turns into a flame fest ill lock it and we will never discuss this topic again -Kamin
*this is just trying to make things a little easier for other people
General
Pros
-its an RB! from a skyline!-closest thing to a real skyline-I-6 potential-the awesome sound.
Cons
-Yes, it is more weight, around 150lbs more for a rb25 swap. the weight isnt important tho, its the weight shift. it really depends on engine/transmission and how you mount it (i.e. crossmember or aftermarket mounts), but realistically your looking at 2-3% overall weight shift. if you look at the numbers in a 3000lb car thats only a 60-90lb shift forward. just to put that in perspective, 12 gallons of gas weighs roughly 100lbs so there is more of a shift between a full and empty tank, than a RB swap. IT DOES NOT DESTROY THE WEIGHT BALANCE OF THE CAR
-Parts are still rare and expensive, but things are starting to come over-mounts or crossmember swap required
RB20
Pros
-cheap-skyline engine (?)-WD-racing was saw near 400hp with his-easy swap-free revving up to 8k is possible on stock valve train-excelent gas mileage off boost (it is a 2l after all)-can make good power with minimal mods.-sensors interchange with lots of usdm cars
Cons
-SR is easier with same potential (for your lower goal people). out of the box both will make near the same power, and upgrade easily to near the same numbers. -cheap turbo (ceramic wheel)-"weaker" tranny, nearly the same as KA/SR trans-akward intake manifold- its getting old 89-93 production years-high mileage engines need proper mantinence ie timing belts and water pumps- tiny injectors (270cc)-intake manifold flange is diffrent from rb25 (greddy manfold does not bolt on)-some rb20's can have the same problem as the early rb26 engines with the crank collar issue
RB25
Pros
-good potential (500+ on stock internals)-VVT-strong tranny (also include this when you price rb25s)
Cons
-expensive clips (when you get that strong tranny)-becoming rare and expensive parts-weak pistons ring lands-not full glory as rb26 -another lame turbo, but better than the RB20's-factory hp overrated (easily achieved with basic swap upgrades though)-side feed injectors (hard to find)-akward intake manifold-custom driveshaft required (unless you use RB20 tranny?)
RB26
Pros
-the GODZILLA of RBs-most potential of all-twin turbo stock-upwards of 300+ out the door-bullet proof
Cons
-$$$$$-$$$$$-r32 crank coller issue (kills motor)-need for rb25 tranny-hard to find r33 motors-impossible to find r34 motors-did we mention $$$$$?
RB30det hybrid
Using the higher displacement 3 L block from the RB30 engine mated to the RB25 or RB26 head can yield a very powerful engine. Here's a thread with details. zerothread?id=188136
For Specs on engines and good info also check:- http://www.meggala.com/nissanrb3css.htm
Biggest con... price of a RB26 will be cheaper to purchase than trying to mate a RB26 to a RB25. The end results would not justify the cost associated with the head swap. Best route to go on the RB25 block is with a R34 NEO RB25 Head.S13_RB25 wrote:Ok what I was wondering, looking off of the rb30 hybird, was that can a rb26 head fit a rb25 block?? If so what are the pros and the cons?
. Well does the neo head flow in more air then the rb25 head it self or the valve train is better on the neo compared to the rb25.Coolwhip wrote:
Biggest con... price of a RB26 will be cheaper to purchase than trying to mate a RB26 to a RB25. The end results would not justify the cost associated with the head swap. Best route to go on the RB25 block is with a R34 NEO RB25 Head.
Ohh I forgot lol the RB25 neo has VVT. But just to make sure does that give the rb low to mid range torque right??S13_RB25 wrote:. Well does the neo head flow in more air then the rb25 head it self or the valve train is better on the neo compared to the rb25.
Orthank wrote:RB25DET series 1
Ceramic POS Turbo like the RB20
Side feed injectors like SR20
RB25DET series 2
Plastic compressor wheel turbo
Different CAM angles and sensor
RB25DET NEO
NEO head with ome GT-R head internals (solid lifters)
different combustion chamber size
IN EX CAMs are different sizes 236°in, 232°ex
IN EX NVCS (r33 is only IN)
Traction control
Improved coil packs
Largest stock RB turbo
MT ECU is expensive and rare as hell due to different wiring loom compared to all other RB engines
Top feed injectors same as Z33 Z34 (370cc)
Highest power (STOCK) of all RB single turbo engines
Practically every head component is unique to this engine therefore sourcing parts can be a b****
Internals as in the shafts and gears and forks and synchros and stuff. The RB20 tranny is a KA tranny is an SR tranny, just different bellhousings - IIRC. The RB25 trans (same as Z32 n/a) is massive by comparison and can withstand alot more power. So it's weak by comparison, and weak for high power purposes.Trini94 wrote:when u say the rb20 tranny is weak do u mean the internals (clutch flywheel and pressure plate) or is it something else?