I did do a search and it didnt help. I am getting ready to rebuild my KA24E and i need some performance parts and info. I am going to bore as big as possible.(how big is that?). I want to replace pistons (what type?). Then I am going to rebuild the head. (Should I swap to dual overhead, or just stay?) I want to up the rpms and the performance. I want to try to do this on a tighter budget butll ill come up with the money for the recomended. Any info and parts recommendations will be greatly apprecitated. HIgh compression is fine, but i want it driveable and street legal. Nitrous or turbo MAY be in the future. A new clutch will also be done(type?)
Modified by BlackS13SR20DETT at 8:09 PM 7/31/2005
i beg for your help>KA24E rebuild
Re: parts for a sweet KA24E motor (BlackS13SR20DETT)
This seems to be the newbie rebuild thread, so it's just what I'm looking for.
(So you know what I'm starting with: I've rebuilt a 10HP Briggs and stratton air-cooled, carbourated generator motor, but nothing else)
I'm thinking of rebuilding my KA24E to the first overbore (and doing some mods at the same time). I've enquired at the Nissan dealer about a rebuild kit and piston/ring kit. The sales guy said they sell them all the time, but the parts and service guys are away (it's a holiday today).
I talked to my (american muscle car engine in tiny MG shell) car-guy friend about it and he told me I should get something called a "long block rebuild" which is basically an almost complete re-built engine, and I just bring back my old engine to get the core charge refunded.
Is such a thing available for a (240sx) KA24E? In BC, Canada?
If not, what tools do I need to do the rebuild? (I know about socket set, screwdrivers, ring compressor, spring compressor, hone, and I can rent them at Canadian Tire)
(So you know what I'm starting with: I've rebuilt a 10HP Briggs and stratton air-cooled, carbourated generator motor, but nothing else)
I'm thinking of rebuilding my KA24E to the first overbore (and doing some mods at the same time). I've enquired at the Nissan dealer about a rebuild kit and piston/ring kit. The sales guy said they sell them all the time, but the parts and service guys are away (it's a holiday today).
I talked to my (american muscle car engine in tiny MG shell) car-guy friend about it and he told me I should get something called a "long block rebuild" which is basically an almost complete re-built engine, and I just bring back my old engine to get the core charge refunded.
Is such a thing available for a (240sx) KA24E? In BC, Canada?
If not, what tools do I need to do the rebuild? (I know about socket set, screwdrivers, ring compressor, spring compressor, hone, and I can rent them at Canadian Tire)
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Kenrik
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Infiniti G35 Coupe
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Re: parts for a sweet KA24E motor (Nanaimo)
make sure you get Forged Rods with those new pistons check in the KA-T forum for info on the best stuff to rebuild your engine with.
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1991S13
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From what I have seen, I am not sure if anyone bores KA's over .020". I've found .010" and .020" over pistons, but that's about all. Shop around (start with this site's sponsors) and you will find everything from pistons to bearings to gasket sets. The rebuild kit you would get from Nissan would probably be the stock parts, and if you are looking to make more power you should look into forged pistons and pauter rods so it holds up for the long run. Just to throw some brand names around so you get the idea - Arias pistons, Cometic gaskets, ARP fasteners, Crower springs and retainers, Clevite rod and main bearings...Like I said, shop around and you will find them.
You cannot just put a DOHC head on your SOHC block, so you're gonna have to reuse the same head. You can take it to the machine shop and have it ported and polished, get a 3 angle valve job, etc. Then rebuild with all new valves, springs, higher lift/longer duration cams, etc. Upgrading to ARP bolts may be a good idea too so you don't have to worry about the head seperating from the block or anything (don't know if these engines really have that problem, but my uncle's 6 cylinder truck engine did it.)
If you plan on going turbo/nitrous try to stay away from high compression. Come up with a game plan and decide what you are going to do in the future so you don't spend a lot on making NA power, then change your mind a year later and scrap all that for turbo parts.
As far as buying a built KA24E I don't know where you could get one, but it's not hard to find rebuilt KA-DE's. http://www.phatka-t.com sells rebuilt DE's that are basically bulletproof. Don't hesitate to call up Ivan at Phat KA-T to ask questions either - he helped me out and told me about a lot of stuff I didn't know about.
If you are attempting the rebuild you should have a full set of tools because you never know what you might run in to. I think the FSM lists tools you need, so try to find the link to download your own FSM. Air tools will help you out a lot too. I couldn't have changed transmissions without air tools . If you are on a budget, save up for the good stuff, don't just buy the cheapest thing you find. You definately pay for the good stuff, and you will be glad you did. I couldn't enjoy it when I was driving it hard if I used cheap parts because I would always be wondering in the back of my mind if it would hold up this time.
Modified by 1991S13 at 9:00 PM 9/5/2005
You cannot just put a DOHC head on your SOHC block, so you're gonna have to reuse the same head. You can take it to the machine shop and have it ported and polished, get a 3 angle valve job, etc. Then rebuild with all new valves, springs, higher lift/longer duration cams, etc. Upgrading to ARP bolts may be a good idea too so you don't have to worry about the head seperating from the block or anything (don't know if these engines really have that problem, but my uncle's 6 cylinder truck engine did it.)
If you plan on going turbo/nitrous try to stay away from high compression. Come up with a game plan and decide what you are going to do in the future so you don't spend a lot on making NA power, then change your mind a year later and scrap all that for turbo parts.
As far as buying a built KA24E I don't know where you could get one, but it's not hard to find rebuilt KA-DE's. http://www.phatka-t.com sells rebuilt DE's that are basically bulletproof. Don't hesitate to call up Ivan at Phat KA-T to ask questions either - he helped me out and told me about a lot of stuff I didn't know about.
If you are attempting the rebuild you should have a full set of tools because you never know what you might run in to. I think the FSM lists tools you need, so try to find the link to download your own FSM. Air tools will help you out a lot too. I couldn't have changed transmissions without air tools . If you are on a budget, save up for the good stuff, don't just buy the cheapest thing you find. You definately pay for the good stuff, and you will be glad you did. I couldn't enjoy it when I was driving it hard if I used cheap parts because I would always be wondering in the back of my mind if it would hold up this time.
Modified by 1991S13 at 9:00 PM 9/5/2005
Re: parts for a sweet KA24E motor (Kenrik)
Kenrik wrote:make sure you get Forged Rods with those new pistons check in the KA-T forum for info on the best stuff to rebuild your engine with.
Ummm... I was thinking of rebuilding just to bring it to stock health. I've since been convinced that I almost certainly don't need a rebuild. My engine's only got 170,000 Km, has had regular oil changes (always clean as a whistle), and doesn't smoke or have significantly lost power or bad mileage (at least since I got the loose alternator trigger wire fixed).1991S13 wrote: ... you should look into forged pistons and pauter rods so it holds up for the long run. ...
... have it ported and polished, get a 3 angle valve job, etc. Then rebuild with all new valves, springs, higher lift/longer duration cams, etc. ...
As far as buying a built KA24E I don't know where you could get one, but it's not hard to find rebuilt KA-DE's. http://www.phatka-t.com sells rebuilt DE's that are basically bulletproof. ...
For what I use it for (daily driver including regular trips over pseudo-mount-akina) All that really would benefit me is probably an MSD 6A and coil, replacing my crush-bent custom intake with mandrel bent SS , regular maintenance, and better driving technique.
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1991S13
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When I mentioned overbores, forged pistons, machine work and all that I was talking to the first guy who is looking to rebuild for more power. Im sorry, I didn't even go back and check if I answered all your questions. Now that I look at it, he posted that in July so I guess it's kinda useless to reply now lol.
The way I think is if it aint broke dont fix it, so if yours is running that good I would leave it alone. The coil, intake, good driving technique and keeping up with regular maintenance should keep you safe - every oil change I dump some Seafoam in the gas tank to clean the lines, injectors and all that, too.
The way I think is if it aint broke dont fix it, so if yours is running that good I would leave it alone. The coil, intake, good driving technique and keeping up with regular maintenance should keep you safe - every oil change I dump some Seafoam in the gas tank to clean the lines, injectors and all that, too.
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BlackS13SR20DETT
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Re: (1991S13)
[QUOTE=1991S13]When I mentioned overbores, forged pistons, machine work and all that I was talking to the first guy who is looking to rebuild for more power.
thanks for replying. ( ive been waiting for a while) thanks for the advice.
thanks for replying. ( ive been waiting for a while) thanks for the advice.