I'm thinking about getting an SR20det from an S15

[mmm240]

Tell me why I should and shouldn't?I read that it makes 250hp at 10lbs of boost along with VVT. SO it's the most powerful of the SR20s. Comes with a six-speed, which sounds awesome. Had a helical rear diff (i'll have to speak with the shop and find out how much they can get that for). They were produced from 1999-2002 (lower miles), cause I know that I won't be finding and S13/14 with low miles anymore.So is all the above worth the extra price?I think I will be happy with the power. I don't need to go crazy fast. The main thing for me is that it will most likely have the least mileage of the SR20s, so it should be the most reliable. The added power is a close second. There is tons of support for the motor, so If I do want more a couple grand in bolt ons will get me past 300hp. It all sounds good to me.And I will have a reputable shop do the install.

[Hijacker]

If you don't plan on modding the motor much, an S15 is good bang for buck. However, even the upgraded parts on an S15 motor get replaced if you want more power than 300. Yu could seriously get past 300 for much less on an S13 or S14 motor (including motor cost) than you could with an S15

Some people say the 6 speed is weak, because the gears are cut thinner to fit in the same gearbox housing. I can't confirm that claim as the only 6 speed I've dealt with is still being installed in a friend's car.

You will need the diff. No ifs ands or buts. The speed sensor is housed in the diff carrier, so there's no getting around thinking you'll need it.

[mmm240]

You will need the diff. No ifs ands or buts. The speed sensor is housed in the diff carrier, so there's no getting around thinking you'll need it.

You're right,I forgot even about needing the shafts for the diff too. Kinda throws drifting out the window. I would like to be able to do all types of racing and daily drive. Maybe I will look for an S14 motor, I think they come with 230hp, so no big deal.

[Hijacker]

If you want to swap the heli diff for a clutch type, do it. You can resell the heli for a decent price. I think the S15 output shafts are different from S13/S14 vlsd and open diff output shafts though.

[RCCC_DRiFteR]

A friend of ours who is out in Japan as a scholar was tellin us. That alot of the Japanese street drifters with s15's. When they do build their motor alot of them use an s13/s14 motor to build up. Because of the VVT on the s15, it makes the motor alot harder to be put back together correctly without having some form of problems. But locally here in Sac, I dont know him personally. But there is a kid running around with an s15 SR, and its his daily driver

[mmm240]

If you want to swap the heli diff for a clutch type, do it. You can resell the heli for a decent price. I think the S15 output shafts are different from S13/S14 vlsd and open diff output shafts though.

I'm not sure I understood earlier. So all I need the diff for is the speed sensor? I could have that speed sensor bunged (if you will) into another differential? Like I can still swap differentials if I wanted too and not run into any problems? Ideally I would like to have the helical for autocross and road racing, but a welded diff for drifting.

[idahotuner]

cause I know that I won't be finding and S13/14 with low miles anymore.

thisisnt true. my sr only has 40,xxx miles on it. the block was supper clean, no sleeve wear. pistons cam clean o ntop with jsut a rag. to wipe them off.

[1unar3clipse]

cause I know that I won't be finding and S13/14 with low miles anymore.

I paid less than most people pay to get 4 new tires for my s13 Redtop (didn't have coil-packs or ECU) Just finished pulling it apart two weekends ago for rebuild but the seller told me the motor hadn't been used since importation (lack of funds mid project) upon opening it up it was so clean my Mechanic told me it was probably less than 60k miles (woot! too bad I'm rebuilding for more power)Ended up sourcing an SR trans from KAMO (friend and nico member) for free.

Just look around and have cash ready before you shop around, although an s15 motor would be teh secks I'm sticking with my Redtop.

[Hijacker]

I'm not sure I understood earlier. So all I need the diff for is the speed sensor? I could have that speed sensor bunged (if you will) into another differential? Like I can still swap differentials if I wanted too and not run into any problems? Ideally I would like to have the helical for autocross and road racing, but a welded diff for drifting.

All you need is the carrier. You can put any kind of diff you want inside the carrier

[mmm240]

Thanks you!

[karmakaze]

A friend of ours who is out in Japan as a scholar was tellin us. That alot of the Japanese street drifters with s15's. When they do build their motor alot of them use an s13/s14 motor to build up. Because of the VVT on the s15, it makes the motor alot harder to be put back together correctly without having some form of problems. But locally here in Sac, I dont know him personally. But there is a kid running around with an s15 SR, and its his daily driver

thats a bunch of bull****.

there is hardly any difference between the s14 and s15 motors and they both have the same VTC system which is not hard to work with AT ALL. you don't have to use aftermarket or s13 pulleys either.

[RCCC_DRiFteR]

So you personally have the skills to put an s15 motor back together by yourself with no worries of having some sort of problem?? I figure most everyone here works on there own car, but I wouldn't consider myself at a professional mechanic level. Unless, how long hvae you been working on cars??

[karmakaze]

So you personally have the skills to put an s15 motor back together by yourself with no worries of having some sort of problem?? I figure most everyone here works on there own car, but I wouldn't consider myself at a professional mechanic level. Unless, how long hvae you been working on cars??

yes, i do have the skills. thanks for asking. i have 2 s14 builds under by belt. as well as a crap load of other vehicles i have worked on.

it is the same as a s14. only difference is the transmission and speed sensor.

if you can build an s13 then you can build an s15. there is not anything hard about it. you just have the vtc unit bolted with the crank pulley bolt to the intake cam.

all i am saying, is that whoever told you that about the s15 is a tard.

[mmm240]

Your debate must be why I am considering a CA18 now

[RCCC_DRiFteR]

Your debate must be why I am considering a CA18 now

LoL sorry. But I understand what your saying, i was unaware that you did do alot of your own work karma

[bgsr240]

Your debate must be why I am considering a CA18 now

That would be the biggest mistake of your life. Those motors are old technology and junk.

[Hijacker]

And so is this thread. Old that is.

[bgsr240]