DatZunfan Posted July 5, 2006 Share Posted July 5, 2006 Hello Everyone, My Name is Nick and i have not posted much on the boards, but i have been watching and reading a little... I have a L28et with full wiring harness and ecu and so on. Howerever i don't believe i want to build it as the head seems to limit the motor. This said, i am looking for a state-side motor that i can build and put down some Higher numbers out of (350-400 range). The motors i have in mind are: KA24de which i would turbo 4g63t i like the idea of a SR20det as well but it seems that the ka is just as good of a motor if not better for a boosted application. Not to mention that parts for the SR are a little difficult and PRICEY to come by. I have the most experience with the 4g63t motors as my friends and I have built a couple of them and run them everyday (at least they do). The parts are easy to get and abundant. Apparently the 4g63t idea has been discused alot and noone has ever come up with a YES or NO it can or can not be done. Th problems seem to the the TB which u can buy a manifold to fix and the trans which u can make and fix with a starion and a Mighty Max trans. The Problems i am wondering about are the Motor mount issues...IS THIS SWAP WORTH IT? What do you think? I was wondering if anyone has opinions in this matter? Does anyone know if this swap has been done for sure? Thank You, Nick Quote Link to comment Share on other sites More sharing options...
SR240Z Posted July 5, 2006 Share Posted July 5, 2006 all parts for the sr20 are readily available most all the time and definitely not too expensive for what you get to start out with. Im a little bias so i say SR20DET Quote Link to comment Share on other sites More sharing options...
DatZunfan Posted July 5, 2006 Author Share Posted July 5, 2006 Look at the torque numbers between the sr20 and the ka24de though...http://www.drifting.com/forums/showthread.php?t=2427 O, and just a btw, I love what you have done with your car and the (i am assuming) customers cars you have on your site...brings a single tear to my eye... Quote Link to comment Share on other sites More sharing options...
SR240Z Posted July 5, 2006 Share Posted July 5, 2006 thats an odd dyno, ive never seen that low of torque numbers for an sr20 with only 350whp, when we were at that level we had about 340 ft. tq to the wheels and 360whp. They should have used the same exact spec turbos to make a more figurative dyno sheet for both and would have been a better comparison rather than a ballbearing gt30/35 and a standard t3/t4. Either both should be on the ballbearing turbo or both running a same spec t3/t4. Quote Link to comment Share on other sites More sharing options...
DatZunfan Posted July 6, 2006 Author Share Posted July 6, 2006 i agree, they should have used the same turbo's on both setups. Other then numbers though. The main reason for my choosing the ka24de is the price. I can pick a whole car up locally for about 500 wrecked but with a good drivetrain and all of the wiring and misc. parts i might need. I will probably end up building the bottom end and having mild headwork done, some cams and such. However i believe i can build a 350-400 horse KA for in the 1500 range (no turbo or intercooler or injectors or stand-alone). As I have a local machine shop that i can buy wholesale forged internals from DIRT CHEAP, name brand stuff too. We build enough 4g's to have a pretty solid backround in where to find CHEAP but good products as far as and IC's and so on... What do you think? Thanks, Nick Quote Link to comment Share on other sites More sharing options...
SR240Z Posted July 6, 2006 Share Posted July 6, 2006 if you can do it for cheap and as long as the block and head are built for the power, GO FOR IT DUDE!!!!!! Quote Link to comment Share on other sites More sharing options...
Sparks280zt Posted July 6, 2006 Share Posted July 6, 2006 i say ka24det for the same reason as you, price. Where in NC are u? Quote Link to comment Share on other sites More sharing options...
mtcookson Posted July 7, 2006 Share Posted July 7, 2006 I vote KA24DET. More low to midrange torque Lots of power Cheap to modify Cheap to replace Tons of them out there Reliable The SR20DET is definitely a nice motor... but I'm more of a low end power person. I don't want to rev it to hell to make power and get going. Granted its very light weight... I would still stick with a KA24DET. The 4G63... its a Mitsubishi... The 4G63's are definitely proven to be able to make power but Mitsubishi has such a terrible reliability record that I'd have a hard time dumping a bunch of money into something that's likely going to give you a hard time. That's just me though. Quote Link to comment Share on other sites More sharing options...
Shift Posted July 7, 2006 Share Posted July 7, 2006 I vote going KA-T. Recommend lowering compression ratios a little with new internals and also recommend using anything other than the stock engine computer. Quote Link to comment Share on other sites More sharing options...
Guest ericw Posted July 7, 2006 Share Posted July 7, 2006 what are you gonna do with your l28et? i say KA for price like most of the others Quote Link to comment Share on other sites More sharing options...
SR240Z Posted July 7, 2006 Share Posted July 7, 2006 The SR20DET is definitely a nice motor... but I'm more of a low end power person. I don't want to rev it to hell to make power and get going. Granted its very light weight... I would still stick with a KA24DET. Rev it to hell? Redline is only 7500rpm and the KA is stock redline at like 6500rpm i think. I would think people would prefer an extra 1k rpm of power. You could always build a 2.2L SR20 Non stroker. Quote Link to comment Share on other sites More sharing options...
Shift Posted July 7, 2006 Share Posted July 7, 2006 Rev it to hell? Redline is only 7500rpm and the KA is stock redline at like 6500rpm i think. I would think people would prefer an extra 1k rpm of power. You could always build a 2.2L SR20 Non stroker. I would like an extra 1k rpm . Were there sr20de (no turbo) engines in a FR layout? I've heard of a project to convert a SR20DE fro a infinity G20 (FWD) to RWD, but never really saw any details. You think getting a SR20DET and swapping the internals with those from a G20 to convert to NA would work? Quote Link to comment Share on other sites More sharing options...
SR240Z Posted July 7, 2006 Share Posted July 7, 2006 yea the silvias as well did come with an sr20de rwd NA version, in the s13, s14 and s15 versions. Quote Link to comment Share on other sites More sharing options...
mtcookson Posted July 7, 2006 Share Posted July 7, 2006 Rev it to hell? Redline is only 7500rpm and the KA is stock redline at like 6500rpm i think. I would think people would prefer an extra 1k rpm of power. You could always build a 2.2L SR20 Non stroker. Take that dyno comparison of the KA-T and SR-T above. Look at the 4,000 rpm point. The KA-T is right around its peak torque and the SR is making about as much as a stock Honda. You have to rev the SR to make your power, even if it only revs to 7,500 rpm. The extra 1,000 rpm is not an extra 1,000 rpm of power. The power is shifted forward another 1,000 rpm so all that means is there's more time under the power band that you have to accelerate. That KA-T makes over 250 lb. ft. torque from roughly 3,400 rpm to 6,800 rpm. That SR makes slightly over 250 torque from roughly 5,000 rpm to just about 7,500 rpm. KA-T - 250++ torque for 3,100 rpm ST20 - 250+ torque for 2,500 rpm Horsepower? Edit... now that I look at that SR20 dyno some more... its completely screwed up. The HP/TQ crossover point isn't at 5,252 where it should be and the numbers are all misaligned. Anyways... that doesn't really change the point I'm trying to make that going by the above, that KA-T is clearly more power but does it quicker and doesn't require the revs. Most should know that the higher you rev an engine... the harder it is to keep it together, which is the beauty of forced induction. No need for high revs since all of your power can be available lower in the rev range. Granted that 7,500 rpm isn't all that high but the above still remains. Quote Link to comment Share on other sites More sharing options...
DatZunfan Posted July 7, 2006 Author Share Posted July 7, 2006 I vote going KA-T. Recommend lowering compression ratios a little with new internals and also recommend using anything other than the stock engine computer. I plan on a full stand alone of course, which one though i have not decided...as far as the compression ratio. I like 9:1 it's what we have had the best luck at and what i will build mine at. The DSM trash loves 9:1 granted it is an entirely different motor but i think it's a good round number. what are you gonna do with your l28et? i say KA for price like most of the others Sell it most likely interested? I have the full motor, wiring harness, ECU, all the accessories and so on... Anyway I like the lower rpm torque that the KA's seem to throw down. Now granted that dyno was not a good comparison, i think that the ka's have more bottom-end balls then the SR's. But i don't know for sure having not built either, let-alone both. Rev it to hell? Redline is only 7500rpm and the KA is stock redline at like 6500rpm i think. I would think people would prefer an extra 1k rpm of power. You could always build a 2.2L SR20 Non stroker. I want the extra 1k, but i would rather balance a KA to get mine, that's all. Nick Quote Link to comment Share on other sites More sharing options...
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