Well, it finally happened today... ahhhh And I have to say the engine is quite nice. The car is a '93 coupe with a redtop 3" downpipe, N1 dual exhaust, JIC coil-overs, BOV, boost controller, etc..... So I have to say I was impressed at the possibilities of my car! I still haven't decided if I want the sr or the ca, but either way it's gonna be a while..... The owner of the car didn't quite impress me as much. Claimed a lot of things that were in contradiction with what I've learned on this site and others, such as: The stock block can handle 25-30psi boost, no problem. He currently runs between 8 and 15psi. He says if he gets a T28 he should be running high 12's...... I didn't argue with him; it's his car. But besides that, I have experienced the joy of an SR!! I'm sure all of you that have as well will know my excitement.....

 

I belive the SR can handle that much psi, but that is REALLY pushing it. Sum shops have done that but i wouldnt do that daily driving. And SR's are good engines Id rather get a CA though...just kus its a bit differnt and i love to have sumthing not a lot of people have

 

i know 22 is doable and the t-28 can max out at around 20 psi, can definately push 12 EASY with some good tires

 

Ken who works at Enjukuracing.com had the s13 SR and ran mid 12's with his stock t25. He had all the basic SR swap parts...fmic,exhuast, down pipe, boost controller, clutch, flywheel and all. Its right on the website. Then he threw on the enjuku racing turbo upgrade kit (only 3k$) and made 398hp on stock internals and fuel. My buddy has a t56 I believe he just put on his s13 SR and is runnin 14 street on high octane. 20+ psi for track and race gas and stock 370 injectors, he still runs rich and is leaned out across the map..... but he is glad he still has plenty of fuel, lol. The 2 ft flame that shoots out when he shifts or lets of the gas =D.

Robbie

 

Just a hint, dont run ur turbo past its efficiency. T28 is GOOD for 18psi, yea u can hit 20, but should it?

Robbie

 

MY friend justin has a RHD S14 (hints his liences plates) and i got to ride in his car with him and lets just say that is when i decided to get a SR20DET i love the pull and the results if seeing the speedo climb like there is no tomarrow. Plus it was a great ride cuz as we were ride people would look like what the **** that guy is driving on the other side of the car.

 

Wow, you guys seem pretty confident in this. I'm still a little skeptical, but that's just me.... Maybe it was the 13-15psi efficiency of the stock turbo that had me thinking the block couldn't take more. I'm still not sure about running at 25-35psi with just a bigger turbo. Especially on a daily driver... But if so, that's awsome! So what's this talk I hear about a CA having such a stronger bottom end with the iron block? Do you have to run like 40-50psi to take advantage of that or something?

Also, are those 12sec ET's without an LSD? I would think that could hurt you a bit on the launch....

 

im more then sure they have a LSD..It would help u a lot.

 

Sounds like you just get your info from the boards, lol. Well I live this everyday and work with these motors and what not. Cast iron is good because........... its cast iron, Same reason as why the cast iron turbo exhuast manifold is better, its stronger. No you dont have to run 40psi which Ive NEVER scene run on a 1.8L, street specially lol. The SR is aluminum which of corse if lighter but not as strong. So some say you MUST sleeve it at about 400hp..... My friend Manning tuned a 450hp s13 SR with a T3/T4, he blew the stock head gasket, thast all...... The guy with the T56 has more than just the turbo upgrade, hes got all the basic bolt ons and the hks piggy back system, so he is able to tune his car alot easier right there on the board and like I said he is leaned out and still runs rich on the 370 injectors. And as for the stock t25 on the s13 SR, the motor can take way more boost than 16psi. That turbo wont go farther than that but they dont throw a t4 on just any motor, they gotta look at emissions and what not. Plus you dont see many cars period that come with anything bigger than a T3. Even the RB25DET comes with a T25...
and you see people puttin mad psi to the RB with like a T66 =D

Robbie

 

damn your easily amused. i was pissed the **** off when i drove my friend's 180 with red top, boy sr lacks some torque, it's alright but not what i'm used to.

my rx-7 didn't have torque either but stock it hit harder than the sr in top end. stock turbo for rx-7 is like a t3/t4 and i know the sr had a t25.

i've driven 10 sec civics and 11 sec integras, ridding in a NSX, supras, turbo camrys, supercharged integra, super mr2, just about turbo anything, even 600hp mustangs. so don't be pissed off at me, i'm just too use to everything. turbo KA is way to go! got to love them torque.

stock rx-7 engine can handle about 30 psi stock.

and another thing, if you plan to boost alot, ditch the t25 u boost more than 15-16psi it'll just shoot up heat and will suck big time!

-mike

o yeah, i went to the weekend drags, i seen this black 180 sr powered, hit low-12s with intake, exhaust, boost controller, and minor things, and slicks. not too bad i say.

 

NO motor cept for a few are gonna be hard hitting stock. I mean they can put down 15psi stock to the SR but there is no way it would pass any emmissions...anywhere really, to much fuel. I test drove a turbo supra for fun once, I was disapointed a little bit, but you have to look at teh motors potential and parts. There are alot of parts for not alot of money for the SR, its a easy swap to do, not alot of time, easy motor to work on. Same with the CA. But yea get rid of the T25 for higher boost. Also look at the RB25det and the RB20det, you would think for being in a japanease super car it would run better than 14's... I was a bit surprized when we put a RB25DET into my buddies Zouki, he ran a 14 flat. But again its thepotential of that motor, 600hp on stock internals =D, tune it right and push more than that.

Robbie

 

i have a friend with a lt1 motor basically stock, just upp'd heads (camaro engine) 5.7L pumping 700+ hp and also my friend's v6 turbo buick does 13s stock, and his friend has a 700hp 9 sec buick gnx stock internals, i'm not trying discourage people but yeah just saying.

 

Well evil, I do get my info from these boards and others, plus online articles, magazine articles, and talking with people who have the engine and information about it. I still don't understand why cast iron is better because it's stronger, when you make the point that the aluminum block is no weakling in itself. And I realize (now) the engine can take more boost than 15psi, but it's pointless with the stock turbo. I just didn't see how a bigger turbo alone would lower his ET's almost a second, since I'm pretty sure he told me his time was high to mid 13's. I can see with an lsd and some slicks and proper engine management to go along with the turbo.

And time, you gotta understand I'm used to (dare I say it) Honda's where the torque is way low. At least the SR has close to even torque/hp (stock at least). I've ridden in some muscle cars too, including a cobra kit car which is pretty sweet. But try to put those on an autocross course and look at the times. Handling AND power is more important to me; but that's just my opinion.

So, yea, I was mistaken about a couple issues and I still don't understand the appeal of the ca18 if it's stock internals offer no benefit over the sr's which is what I'm hearing here, but I'll keep searchin.

 

i call BS on this one man. first off i had a pristine 86 GN. stock the GN came with 240 in 86 and 245 horsepower in 87. it came already pushing 15 psi of boost and loves to knock when you raise it. anything above must be run on race gas and above 22 or so you need alcohol injection. the gnx which if true your friend has effectivly destroyed as there were only 500 made, had 275 horsepower and varied little from the GN. the GNX pushed 18 psi and had a chassis stiffening brace behind the rear diff, plus a couple little doo dads and whatsists here and there little badges those spiffy fender vents etc. the stock internals will only hold up to about 550 horses which will plant one into the 11's. so i highly doubt that your friend has a gnx (which go for around $48,000 because of the rarity) that has 700 "+" horse power.
please post a dyno or track times. also what number GNX is it? they are all numbered since it was a limited production run.

also i fail to see how an lt1, which at its peak never made more than 350 hp gained over 350 horse power from a head swap.?? at max the most someone could get it maybe 70 horse power MAYBE. and what is this lt-1 in? how many CC heads and what type of heads are they? they must be some bad *** heads cause in my nova i didnt get even close to a 350 horse power boost, damn i should have him tune my car.

so yeah are we agree'd BS?

for more info on the GN please visit http://www.gnttype.org and learn a thing or two.

 

just upgrading the turbo alone can give you more horsepower because as you start to boost a smaller turbo, IE the t-25, you start to boost it past it's efficiency range. as you push it past its efficiency range it starts to heat the charged air more and more. and since 14 psi is really pushing that little snail shell the air get extremely hot. and when the same amount of boost is made with a bigger turbo it doesnt have to spin as fast, doesnt heat the air as much, and therefore creates a denser colder charge which gives youmore horsepower.