This may have been posted before but I'm new and I searched and couldn't find anything.

Basically, I will likely be using the sr20det engine, but I am still considering the rb20det and rb25det engines. I was wondering if people who have 300+ hp on there 240's could tell me what they have done.

I know that the rb25det engine costs a lot more than both other engines, and cost IS an issue here, I'm definately willing to spend about 4 grand under the hood, maybe a little more.

If I go with the rb25 engine will I have to invest quite a bit more money to increase it to 300 or are the mods fairly simple?

If Im going to go with the sr20 or rb20, will i need a bigger turbo set up to pull 300hp at the wheels?

Basically just looking for some pointers with this one, and looking for the cheapest easiest way to pull 300+ hp to the wheels.

 

For 300 hp sr20:

Sr20motor
T28 BB Turbo
FMIC
Metal Headgasket
550cc Injectors
Piggyback Fuel System
BOV
3in. Turbo back Exhaust
Boost Controller
Z32 Fuel Filter
Walbro 255 Fuel Pump
Tuning

On about 16-17psi you should be right around 300hp, of course using a better turbo will be a lot easier but im trying to keep this cost effective..

Other Recommendations:

Good Clutch
Better Wastegate
Mandrel Exaust Manifold
Z32 Maf
LSD

As for the KA, Spence will chime in soon lol

 

^ yeah thats sounds like an awesome set-up, its not that hard to obtain
just make sure you have good supporting mods.
Dont try to boost high on a stock T25 (BRIAN WIDIKER^^^^)

 

i never ran 16psi on my t25

 

Doesn't a T25 start blowing hot air at 14PSI.... Sounds like detonation to me.

 

The stock turbo is a T25 right? and your saying a T28 would be a good mod?

 

I believe RB20's and SR's come the a stock T25.

 

yea stock is t25, t28 is good for a couple more psi and its ball bearing so it spools better...yes i do not recommend running a t25 past 14ish psi..i did run above that and it did hold the boost, but i did blow the turbo..yes i knew it was going to happen..i needed a reason to upgrade

 

If i remember correctly, the S13 SR came with t25, s14 SR came with t28, s15 SR came with t28 ball bearing

 

of the 3, obviously the S15 T28 was best due to its sizing trim and ball bearings. Its an awesome turbo for a mildly agressive set-up.

(teh hot bagger's turbo was spitting oil like a camel boosting at 14lbs)

 

rb26 stock is 304hp at the wheels with the awd disengaged

 

only the bb s15 turbo is going to get you to 300hp reliably. personally i would just get an ls1 if you want that much power reliably. lighter than a ka and 350hp n/a easily. 400hp with some cams and full exhaust. if you want a 4 cyl or an rb i would suggest a build or atleast rebuild for that kind of power. It's not going to be able to be done on a tight budget, i think you need to reconsider. but out of the choices ls1 seems the most logical

 

s14 t28 and s15 t28 are both ball bearing...the s15 is slightly larger and can boost up to 20ish psi while the s14 is only good to about 16ish..

 

You sure the s14 was ball bearing too? The almighty wikipedia begs to differ

http://en.wikipedia.org/wiki/Nissan_SR20DET

 

no the s14 t28 is not ball bearing. it also has a smaller compressor housing iirc