sr20det or ka24de

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
Nathan
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Joined: Fri Mar 07, 2003 6:43 am

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I have found that for a given horsepower, between the KA, SR, and CA...its relatively similar prices once you break 300hp or so. Oh, and before ANYONE thinks a KA-T is cheap, a fully built KA-T will cost you every bit of 6-7000 to get running right with every little part you'll need, clutch, exhaust, ic, turbo, engine, machine work, fuel management etc.


usdm_180sx
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J-Spec Tuner wrote:The SR is a pretty rough engine if you compare it to a CA or RB series motor, and you cant factualize that the KA will have more torque or the SR internals are ALWAYS good till 400hp.

This is my main problem with these threads, everyone trys to make everything a fact (myself included), when there are just too many variables to have something always hold true.


Ahh yes, did you read the part where I asked how much money do you wanna spend???

NV_JSmith
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Cyberkreig wrote:i'm not calling you a liar, so please read my posts as conversation not argument.

I have trouble beleiving that the ka pulls 230rwhp at 7psi. this would mean that the greddy and turbo XS kits advertise underrated HP numbers. Even supposing for a moment that KAt to4b & 7psi does make 230rwhp. or around 270crank HP, this is right at the very limit of a 370cc fuel system. Remembering that fuel systems are limited by HP not psi. Any of the SR's with the boost turned up can match this. YES 230 @7 is better than 230 @ 14 BUT my point is simply that $3000 spent on an sr or $3000 spent on a turbo kit puts you in teh same neighborhood Hp wise.


that greddy kit doesn't include the intercooler, thats where the loss of hp is

NV_JSmith
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O and i know somewhere to get the same thing for 2k, pm me if yer interested

Onizuka
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Car: 91 Nissan S13 coupe SR20DET
89 Nissan S14 hatch SR20DE

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S14SRPilot wrote:Ahh yes, did you read the part where I asked how much money do you wanna spend???


Yeah yeah, sorry i wasnt picking you specifically or anything, sorry if it sounded like i was attacking you :D

Onizuka
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89 Nissan S14 hatch SR20DE

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Also, a S13 SR20 with a $600-800 ($100-300 used) Bolt on turbo upgrade (FP BigT28, S14 T28, S15 T28) will easily make over 230-240 at the wheels on the stock fuel system and is capable of 300+ horsepower at the wheels.

Motor + Turbo + fuel pump + Boost controler = Total cost$2500 + $100-800 + $89 + $100 = $2789-3489 for 240hp at the wheels

Very comparible with the KAT in cost and resultant HP

NV_JSmith
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how bout 2k custom work for bout 310hp on my KA with a 15psi boost, changed some internals, but wellllllll worth it.

NV_JSmith
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thats rear wheel hp

Onizuka
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89 Nissan S14 hatch SR20DE

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Dude, interal work = money, you cant just leave it out of the cost figure. Is 310hp your arse dyno figure or do you really have a dyno chart?

Also, $2000 for that kind of work is not availible to 98% of people here. Hell there are people that can get SR's for $1500, but i dont include them in my argument because its not the norm.

NV_JSmith
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Well i can get pretty much bolt on turbo kits for the KA for about $2,000US that will put the KA up to about 210-230, with the fuel managment systems. can you say hot damn, message me if your interested.

Cyberkreig
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Pm is disabled on nico.

what is this some sort of advertisement? I certainly hope that nico has read enough "you get what you pay for" & "i got ripped off" threads to knwo you dont send some guy on a message board $2000.. especially someone that is obviously new to the board.

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C-Kwik
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Cyberkreig wrote:i'm not calling you a liar, so please read my posts as conversation not argument.

I have trouble beleiving that the ka pulls 230rwhp at 7psi. this would mean that the greddy and turbo XS kits advertise underrated HP numbers. Even supposing for a moment that KAt to4b & 7psi does make 230rwhp. or around 270crank HP, this is right at the very limit of a 370cc fuel system. Remembering that fuel systems are limited by HP not psi. Any of the SR's with the boost turned up can match this. YES 230 @7 is better than 230 @ 14 BUT my point is simply that $3000 spent on an sr or $3000 spent on a turbo kit puts you in the same neighborhood Hp wise.


This is a debate so of course it's not personal. :)

Ask around on any of these kits that have been around a while(FMAX, XS, NSport) they all pull about 230 HP at 7 psi. I have an XS dyno chart that shows 226 HP at 6.75 psi. I personally pulled 210 at 6.5 psi with a boost leak. I haven't dyno'd since I fixed the problem, but there was a definite and significant increase in power when I did.

Secondly, according to JWT, the 370 cc injectors are limited to 260 RWHP, not crank HP. And that's just a boost controller or wastegate spring away.

Onizuka
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89 Nissan S14 hatch SR20DE

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Just to be safe I wouldnt run 260 to the ground on 370cc injectors, KA or SR.

Cyberkreig
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C-Kwik wrote:This is a debate so of course it's not personal. :)


cool some people get testy.

Well if you are right about the HP ratings then that certainly puts the KA in the lead in the HP vs. Cost department at this stage.

So. approximately equal money spent. One car has an SR one car has a KAT. both cars have the same MAF & Fuel barriers. The KA has the advantage of a better turbo.

When you look at it like this it makes these debates seem silly. At this point most pro-sr people go to the reliablity argument. about how many miles a KA may have. I dont personaly belive in this argument. Mileage /=/ wear. and 90% of SR owners have no idea to know the mileage of their 'newer' motor.

I personaly do not know what the dangerous HP level on a KA is so i'm not going to speak to that issue either. Its easy to blow any motor with too much boost, poor tuning, poor maintence, or random faults in the metal.

The only other SR pluses i would point out are; the CURRENT state of the aftermarket provides Sr's with a much wider selection of parts ( tho often at an extreamly inflated cost). There is also the avantage of having a 'factory' turbo that comes pre tuned.. this is only really useful if you dont plan to mod heavily. But i personaly think that most sr buyers end up floundering in the 200-250hp range. ANd dont forget the Jdm cool factor :cool:

Lets face it.. we all would have saved money if we built a Nova


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