NISMODUDE1988
04-10-2007, 06:00 AM
Ok here it is. Im thinking we need 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.
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
-$$$$$
-$$$$$
-r32 crank coller issue (kills motor)
-need for rb25 tranny
-hard to find r33 motors
-impossible to find r34 motors
-did we mention $$$$$?
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
-$$$$$
-$$$$$
-r32 crank coller issue (kills motor)
-need for rb25 tranny
-hard to find r33 motors
-impossible to find r34 motors
-did we mention $$$$$?