I get it...

[KATwo40]

Yep. We just turned out an SR20DET swapped 240 from the shop and I can now say, I totally understand the infatuation with these motors.

Don't get me wrong, I love my KA-T and all that jazz, but the SR is really incredibly fun to drive! It seemed like it didn't ever want to stop revving and pulled the same from 3500 all the way to 7500. It felt like it had more, but we didn't push it (don't wanna blow up customer cars lol).

So, props to all the SR guys. I might have to seriously consider selling my built KA...

[AmoebAssassin]

[AmoebAssassin]

If the car is in gear, and they move opposite directions, and you don't really have to push hard to get them to move, you have an open diff.

If the car is in gear, and the move opposite directions, but they're really hard to turn by hand, you have a VLSD

If the car is in neutral and they move opposite directions, or the same direction at vastly different speeds, you have an open diff.

If the car is in neutral and they move the same direction at close to the same speed, you have a VLSD.

[Kittychubbs]

Thanx!! Is because I was gunna swap my old diff for a vlsd but when I notice it had the lines i was like no way! so i tried the lift procedure but i just wanted to make sure and the answer is...its open...booo!lol i have to install the vlsd that i have rite now.im gunna start now 900am

[Poor_S13_Driver]

Am i retarded or is there two completely opposite things going on in this thread? KA240 ive always seen you in the KA-T forum and the like but i find it very intresting that you might be switching over. You like it that much better than a built KA.. congrats on your new discovery

[otterman]

Yep. We just turned out an SR20DET swapped 240 from the shop and I can now say, I totally understand the infatuation with these motors.

Don't get me wrong, I love my KA-T and all that jazz, but the SR is really incredibly fun to drive! It seemed like it didn't ever want to stop revving and pulled the same from 3500 all the way to 7500. It felt like it had more, but we didn't push it (don't wanna blow up customer cars lol).

So, props to all the SR guys. I might have to seriously consider selling my built KA...

Post this at Ka-t.org.... then get murdered

lol jk

Was the engine stock when you did the swap?

[KATwo40]

Yeah, it was a stock redtop.

It does have a couple things I'm not fond of, particularly the skinny water pipe under the CAS. That's kinda gay. There's plenty of room for a big pipe.

But it sure is a fun little motor.

The customer had another shop doing the swap, but it didn't run and the wiring was atrocious (and I mean that as seriously as one could possibly mean it). We straightened it out, slapped on a few goodies (NEO, Profec B, etc.) and rocked on with it.

Here are some pics.

[KATwo40]

Am i retarded or is there two completely opposite things going on in this thread?

Dude, I was thinkin' the exact same thing! I kept double checking my post and the title.

KA240 ive always seen you in the KA-T forum and the like but i find it very intresting that you might be switching over. You like it that much better than a built KA.. congrats on your new discovery

Not quite sure that I'm absolutely going to switch. I mean, damn, I just spent nearly $3k building this KA. You can bet your arse I'm gonna rip some tires, make some nasty 60' launches and and beat up on a few of the local muscle cars for a while.

I would have to consider the overall cost. My KA can make over 400whp with stock S13 cams (which it currently has). The redtop would need new cams to break much over ~330whp. There's one major offset in cost. Additionally, I'd need to have all the little added tidbits, such as yet another downpipe fab, another aftermarket manifold (or custom fab) and the list goes on.

So, I'll probably just rock the KA until I get tired of the car, blow the motor (hope that doesn't happen!) or some other catastrophic event that would warrant another engine and/or car. Maybe in the future I'll do an S14 with a blacktop.

The reason for my post was mainly to come out and openly say, "Yep, it's a pretty fun little motor!"

[Poor_S13_Driver]

I know i double checked it 10x and was like umm..... I also keep forgetting your KA is built, and i agree to stick with that since all the work thats done to it. Ive been a KA guy since i joined the forums a few years ago, but that SR keeps showing me new ways to love it lol, and this kinda stuff only pushes me more in that direction They just seem so fun to play with

[Kittychubbs]

haha sorry guys, my bad!!!

[Deadrodent]

Yeah, I was KA-T all the way until i actually drove a sr. It's not just the added power, it was the 100 pounds that was lost in the front that added to the fun. the car drove like a different beast - lighter on it's feet, and quick.

[Kittychubbs]

really! last time i drove an Sr240 was like 2 years ago.I have a full bolt o kit for my KA .... u givin me doubts!!! lolI personally would go for blacktop SR but they are gettin quite pricey in SoCal again!!

[KATwo40]

If you already have the full bolt-on kit, then you may as well just use it. Keep in mind, the only way I could rock an SR is to modify it to handle 500whp (my KA is built for 550). So, the stock turbo and mani, intake mani, cams and injectors would have to instantly fly out the window.

[Deadrodent]

ur making 550 whp? daaaaamn

[Kittychubbs]

Might as well huh!dammmmn!! 550! I look up to you. whats the boostPs:Hey i ended up on the Vlsd swap in 4 hours!

[Poor_S13_Driver]

500HP is just ridiculous. Thats not my cup of tea though. The "fastest" car ive ever driven is my buddys 06' GTI with the triptronic paddle shifter. I thoguht that was "fast" Ive never driven a boosted 240, but I would imagine a solid 300HP would make me giggle everyday. Its just a matter of deciding which route i want to take.

[Deadrodent]

well do you want added power along with better handling? or just brute force to destroy other cars with? people always think it's just the added power of the sr20 that drives people towards the swap. for me it was the better weight distribution and handling....going on a freeway ramp or a mountain chicane has a whole new feeling now...and i'm on stock boost! handling ftw!!

[otterman]

If you already have the full bolt-on kit, then you may as well just use it. Keep in mind, the only way I could rock an SR is to modify it to handle 500whp (my KA is built for 550). So, the stock turbo and mani, intake mani, cams and injectors would have to instantly fly out the window.

I wouldn't trust the bottom end past 400ish either.

[AmoebAssassin]

A local shop ( http://www.hybridynamics.com )has made 570whp reliably on a stock bottom end SR, and has made 450whp or so on stock cams. There's some food for thought.

[otterman]

A local shop ( http://www.hybridynamics.com )has made 570whp reliably on a stock bottom end SR, and has made 450whp or so on stock cams. There's some food for thought.

Really 570? Wow. Do you know what set up they used? I wonder if rebuilt the bottom end or actually used the internals that came with the motor.

[KATwo40]

I'm not currently making 550, but the engine is built for it...I'm parked at about 300ish, but I'll be retuning for 400whp in the next couple weeks.

As for the SR making 450whp on stock cams...Everything I've read says the head/cams go sonic at around the 330whp mark. Some have been able to squeeze out 350whp, but that's about it. AFter that, they gotta do port work and/or cams.

[ILikeMy240sx]

I'm not currently making 550, but the engine is built for it...I'm parked at about 300ish, but I'll be retuning for 400whp in the next couple weeks.

As for the SR making 450whp on stock cams...Everything I've read says the head/cams go sonic at around the 330whp mark. Some have been able to squeeze out 350whp, but that's about it. AFter that, they gotta do port work and/or cams.

You, sir, are correct. SRs on stock cams have dramatic torque drop after about 5500 RPM. You pretty much need bigger cams (lift and duration) to make big power, I dont care if you have a gigantic turbo, you need the cams to let your motor breathe. If you want to go more than 330 RWMP you really need cams PERIOD. You cant expect to make more than 350 if you are on stock cams and stock valve train. If you also upgrade valve springs and retainers (you pretty much need to with anything more than 11mm lift) then you can rev it more with aftermarket cams to get more power at higher RPM.

Oh and you also need an aftermarket intake manifold to gain more torque up top.

[AmoebAssassin]

Really? My buddy made 400+ whp on a stock head SR. He's pretty trustworthy and I'm sure he could provide a dyno slip if i asked.