# How to rebuild ka24de on a 240sx 95
**URL:** https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243
**Category:** SON240sx Automotive
**Created:** [January 26, 2005, 6:18am UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243 "2005-01-26T06:18:24Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@redpotatoes](https://forums.speedlife.net/u/redpotatoes)
#### Post date: [January 26, 2005, 6:18am UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/1 "2005-01-26T06:18:24Z")
Hi all,
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Not sure if anyone did that but I am planning on doind a complete rebuild of a ka24de next winter. What I mean when I say a complete rebuilt is that I am going to change(upgrade), clean components from my engine. I won't go KA-T in a near futur nor SR20, I simply want a clean, mean engine that will go near ~180-200hp. I am pretty sure that it's reachable without to much trouble. I only need some tip & tricks for the rebuilds: where to start what to do first, best parts to replace, things like that. I have some good reference for some of the things I want to do but not all. Fell free to tell me some advice and what you think. Thx
```
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### Author:  [@GT1](https://forums.speedlife.net/u/GT1)
#### Post date: [January 26, 2005, 6:36am UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/2 "2005-01-26T06:36:58Z")
is that a whp gain or bhp gain?
either way… not such an easy task… theres been tons of disscusion regarding this topic and as well i suggest you check out [www.ka-t.org](http://www.ka-t.org) for more info.
it will give you info on how to prep the car for when you go kat while still getting decent power off an NA setup for now.
GT
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### Author:  [@s14\_2Nv](https://forums.speedlife.net/u/s14_2Nv)
#### Post date: [January 26, 2005, 7:07am UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/3 "2005-01-26T07:07:14Z")
Greg, I don’t think this needs to be locked yet as I’m sure there will be others with the same question.
If a lot of good info is brought up in this thread we I will move it over to FAQ and How to section.
As Greg said, [www.ka-t.org](http://www.ka-t.org) is a good reference if you plan on turboing your car in the future.
If not, some basics you would want to do are:
head gasket and bolts
check motor mounts
timing chain
high comp pistons if going n/a
rods if you plan on high hp
piston rings
port and polish
wrist pins
main bearings
upgraded cams
etc.
I’m sure I’m missing a few things… anyways, people can add to it.
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### Author:  [@redpotatoes](https://forums.speedlife.net/u/redpotatoes)
#### Post date: [January 26, 2005, 7:43am UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/4 "2005-01-26T07:43:57Z")
~180-200hp, not whp. I will for sure get gaskets. If any other ideas, post them. high compression piston would be around what price ? I have search the forum on rebulding the KA and found some things but I would want a complete how to that can be used be others also because I am sure I am not the only one thinking of doing this.Thx
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### Author:  [@redpotatoes](https://forums.speedlife.net/u/redpotatoes)
#### Post date: [January 26, 2005, 8:27am UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/5 "2005-01-26T08:27:27Z")
I found this and I was woudering if it could be a good investement. I f you have others places that I can go look at for complete rebuild kits, post it thx.
[http://www.importperformanceparts.net/imports/pek-nissan.html](http://www.importperformanceparts.net/imports/pek-nissan.html)
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### Author:  [@Cal](https://forums.speedlife.net/u/Cal)
#### Post date: [January 26, 2005, 8:32am UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/6 "2005-01-26T08:32:02Z")
that is a great company, very helpful customer service and pretty quick delivery of parts.
I ordered my sr pistons from them and they just came in today. They have some great deals!
Along with the things phil has mentioned you may also consider shaving the head and adding a big gead gasket, i have heard good things from honda owners who have doen this.
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### Author:  [@redpotatoes](https://forums.speedlife.net/u/redpotatoes)
#### Post date: [January 26, 2005, 8:59am UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/7 "2005-01-26T08:59:06Z")
[http://www.importperformanceparts.net/imports/pek-nissan.html](http://www.importperformanceparts.net/imports/pek-nissan.html)
Do you guys know what can I gain (hp) with a kit similar has this one ?
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### Author:  [@Cal](https://forums.speedlife.net/u/Cal)
#### Post date: [January 26, 2005, 9:15am UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/8 "2005-01-26T09:15:43Z")
depends on the size of the piston and compression
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### Author:  [@s14\_2Nv](https://forums.speedlife.net/u/s14_2Nv)
#### Post date: [January 26, 2005, 9:37am UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/9 "2005-01-26T09:37:12Z")
Right now you probably have less than stock hp depending on the condition of your engine, so it will bring you closer to stock hp, if you want n/a power gains I would recommend the 10.5 to 1 comp. pistons since they would yield the best results.
I can’t give you an exact figure since I will be going with lower compression pistons when I rebuild my ka…
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### Author:  [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)
#### Post date: [January 26, 2005, 12:24pm UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/10 "2005-01-26T12:24:33Z")
Just convert your car to Desil and Run 16:1 Pistons…
Kidding, but honestly your best bet is if you want to stick N/A and rebuild the KA (lol that rhymed) get:
Port and Polish,
.5mm Over Bore and Hone the Block,
High compression forged pistos and rods,
Agressive Cams,
ARP Head and Main Studs,
[http://attila.sdsu.edu/~mmikse/domains/ka24de/arp/arpka24de.htm](http://attila.sdsu.edu/~mmikse/domains/ka24de/arp/arpka24de.htm)
HP Valves and Valve Springs,
[http://attila.sdsu.edu/~mmikse/domains/ka24de/valves/valves.htm](http://attila.sdsu.edu/~mmikse/domains/ka24de/valves/valves.htm)
[http://attila.sdsu.edu/~mmikse/domains/ka24de/springs/springsretainers.htm](http://attila.sdsu.edu/~mmikse/domains/ka24de/springs/springsretainers.htm)
And a full Gasket Set.
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### Author:  [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)
#### Post date: [January 26, 2005, 12:26pm UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/11 "2005-01-26T12:26:20Z")
10.5:1 in a KA will be most efficient for N/A
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### Author:  [@Dumped\_GSR](https://forums.speedlife.net/u/Dumped_GSR)
#### Post date: [January 26, 2005, 1:02pm UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/12 "2005-01-26T13:02:58Z")
ARP Main Studs: #202-5401 --------------- $130.00cdn
ARP Head Studs: #202-4206 --------------- $200.00cdn
$330.00 cdn
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### Author:  [@mr200](https://forums.speedlife.net/u/mr200)
#### Post date: [February 3, 2005, 12:22pm UTC](https://forums.speedlife.net/t/how-to-rebuild-ka24de-on-a-240sx-95/83243/13 "2005-02-03T12:22:41Z")
I would have the entire rotating assembly balanced, and for assembly have it brought to zero deck. If you decide to with a small overbore (recommended) have the machine shop bore to the piston. Some places will bore to spec, which will hurt the motor. Basically they would caluclate the bore of the KA, and just go 0.020 over that number. If they take a micrometer measurement of the actual piston, you will get a much better seal.
I would also recommend Import Performance Parts. I’ve dealt with them in the past, and know other people who also have good things to say.
With cams … in all honesty, I’d look into regrinds. Colt Cams in Langley can probably help you out. [http://www.coltcams.com](http://www.coltcams.com) The cams I’ve seen for the KA aren’t very aggressive at all, and ludicrously expensive.
You’re still looking for almost 50hp over stock. Out of an NA 4 cylinder, that’s a pretty tall order, especially if you want to keep it emissions-legal.
An ECU upgrade would definitely be on the order. Something with more aggressive timing and fuel, rev limiter and speed cut disabled.
JWT has one, but I’ve heard a lot of negative things about JWT from Z32 guys. I’m not going to say I agree with them, it’s just hearsay.
If you discard emissions control … you’ll be almost to that number with an exhaust and intake LOL