Ive heard arguments from every side for alonnnng time. I just bought a 90 240sx shell and a new rebuilt DOHC KA with full intentions of having it boosted in the next 3 months. I have 2 friends 1 who had with a boosted KA and one with the SR (they have both sold their cars). The KA has lasted and outstanding amount of time and runs like brand new to this day. The SR lasted for a bit and then had a "knocking problem" and was replaced with another SR and sold. The SR ran a low 14 to high 13. the KA was running flat 13s.... What im getting at is the KA is reliable apposed to a JDM "low mi" SR.... honestly how in the hell do u know if its low mi or a bunch of bs? I really don't trust swaps with engines that never were released in the US (a version was released in the sentra in a FWD but non turbo). They can show you the picture of an Odometer of like 30k. But they could ship you one easily with over 100k and on top of that has not run in over a year, meaning u may have to spend more in a rebuilt or re manufactured motor. Also u can easily spend over 5k buying and installing the motor instead of just building the KA.

A little more Technical:

SR20:

Provides 205 HP at factory setting of 7 PSI

Can only handle up to 280hp reliably on stock internals.

KA24:

220+ HP boosted and very reliable

Up to 300hp on the same bolt ons you would do on a SR20 without having to do any internal work and paying for the swap.

Can handle 15psi of boost safety on stock internals.

 

Oh my.... here we go

 

can of shit is what you just opened

do what you want.

 

Ok maybe a dumb question but i dont know much about nissan, but why no rb swaps?? Expensive?

 

gtfo.

do what ever you want if you even do anything

 

lol....oh no. I have had them both.

Is all on the tune and how well you take care of your motor. Who the hell told you sr internals are only good for 280hp? wrong.

Talk to people who have done both swaps and they will tell you that each motor runs different.

 

weeeeeeeeeeeeeeeeeeeeeeeellllll.....


there are alot of different types of sr's
s13 205whp STOCK
5 speed
t-25
220-240 with fmic, dp, safc and the boost turned up


s14 220 whp stock
5 speed
t-28
230-250 with fmic, dp, safc and the boost turned up


s15 220 whp stock
6 speed
t28 bb
varible cam
300whp with with fmic, dp, safc and the boost turned up


s15-na 200whp stock!!! na!!
6 speed, itb's, 9k rev limit and lots of other goodies



sr's do fine up to 400whp, and have made 600+ whp on a stock block


im not going into the kat side of things, because thats not my shit.

but fully built ones are sick as shit

 

have the Rebuilt KA right now.

 

expensive as hell, hard to get parts, expensive, heavy.......hard to do ect ect ect...

 

then the smart thing would be gimme the ka. and go jump on the wagon