KA24DE rebuild for low boost

Old 02-10-2005, 06:35 PM
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KA24DE rebuild for low boost

hey whats up all, i got a 96 SE and after thorough research on turboing the KA, ive decided thats what im gonna do. compression test today revealed that cylinder 4 is only squeezin about 125 psi out. i kno it should be around 175. anyways...now i need to get new pistons cuz my rings are done on that cylinder. I was wondering, do i NEED to get cams and valves, springs, retainers? or can I just get some new pistons since im only lookin for about 6-7 psi and 230 hp or so. Im pretty sure the stock forged rods will hold up under that. Also, most of the forged pistons i see are oversized so i would need a bore? is there anyway around this so i dont have to strip it down to the block?
Im thinkin wiseco pistons, better head gasket, new timing chain......stage 1 boostdesign kit. thanks yall
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Old 02-11-2005, 06:51 PM
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dude just get the boost desnig rebuild kit stock bore pistons pins gaskets and rod+main bearing very important 1k not bad im getting it my self
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Old 02-12-2005, 08:13 AM
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yo i just talked to a guy i know that has a turbo altima (KA24) and he said dont go cheap on the rods. also, are you sure they have stock bore pistons? im still gonna need to sned the block to a machine shop right, since the 9 yr. old pistons are so broken in to the cylinder...
damn this is lookin more expensive everyday.....
1,000 - boost designs rebuild kit
700- pauter rods
~2500- BD turbo kit
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Old 02-12-2005, 12:31 PM
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the timing chain should be fine. i don't think they have to ever be replaced.

hence the word chain
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Old 02-12-2005, 05:19 PM
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well stock rods hold up to 400hp just buy new oem ones. ka rods are really beffy beffier than sr
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Old 02-12-2005, 05:41 PM
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for low boos thee is no reason to rebuild unless you have a bad turbo then just buy a new KA for around $200
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Old 02-12-2005, 10:18 PM
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yeah...i was thinkin, what about just replacing the piston rings?? http://www.ka24development.com/turbo...tml.......this guy didnt seem to have oto much trouble doin it, and doesnt requre removing the engine. waht do u think? again im only look for 250 hp or so and 6-7 psi of boost.
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Old 03-13-2005, 04:50 AM
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he replaces the rings without pullin the motor??? tell me how he did it the link was dead for me... i wanna know so i can do it when i need to put new rings in my next 240
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Old 03-14-2005, 04:03 PM
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hey keep me up to date

I am interested to hear how it goes. I'd like to see if I could get 200 to 300 HP out of the KA especially since it only has 53,000 miles on it. I am anxious to hear how your project goes even though I am sure it will be a long process.
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Old 03-15-2005, 06:08 PM
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Originally posted by wikd240
he replaces the rings without pullin the motor??? tell me how he did it the link was dead for me... i wanna know so i can do it when i need to put new rings in my next 240
Pull the head, oil pan, crank, rods and pistons. you have to hone by hand w/ drill but no pullin o' the block
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Old 03-20-2005, 01:47 AM
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Originally posted by KAsingleC
Pull the head, oil pan, crank, rods and pistons. you have to hone by hand w/ drill but no pullin o' the block
wow! YOU CAN NOT REPLACE RINGS THAT WAY OR RODS/BEARINGS.. AND WONT BE ABLE TO DROP A CRANK OUT THAT WAY WIHTOUT RMOVING THE REAR CRANK CASE. TRUST ME I ASKED SO MANY PEOPLE IF I COULD DO MY BLOCK THAT WAY. wikd24d is one of the people i have asked, spacedog0o1 is another... pulling the block will be much faster and easier on you to replace your rings.
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Old 03-20-2005, 01:49 AM
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Originally posted by cfin3
yeah...i was thinkin, what about just replacing the piston rings?? http://www.ka24development.com/turbo...tml.......this guy didnt seem to have oto much trouble doin it, and doesnt requre removing the engine. waht do u think? again im only look for 250 hp or so and 6-7 psi of boost.
don't waste your time trying to replace ur rings without pulling the block out. I learned from people and you will too. just pull it and get it over with.
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Old 03-20-2005, 01:48 PM
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yeah my compression is fine, about 180 or above across the board. i re-checked it a few weeks ago, it mustve been a faulty gauge whcih i suspected cuz the car runs fine. anyways, i got my 370 SR injectors and a JWT ecu on the way that i got for 400 bucks. now just waitin for sum $ for the kit
also just installed a turbo-back exhaust on my firneds wrx...wow that thing is nice
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Old 05-16-2007, 12:03 PM
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6 or 7 psi can only really get you about 225whp...stock 9.5:1 compression can handle 10psi as long as you have a good tune on it....IT'S ALL ABOUT THA TUNE
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Old 05-16-2007, 01:16 PM
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Let us know the specs, parts and how much it cost when you're done with everything - I'm curious to know!
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