ok guys here it is proof

Post by **HaveBlue** » Tue Oct 28, 2003 8:55 pm

those are not adjustable. they are permanently set.

Post by **dabum** » Tue Oct 28, 2003 8:55 pm

i could of sworen JWT made adjustable cam timing

Post by **HaveBlue** » Tue Oct 28, 2003 8:55 pm

well poo-poo on me. your right. they do make adjustable cam gears for the dohc. the cams themselves are not adjustable though.

Post by **dabum** » Tue Oct 28, 2003 8:55 pm

i was gonna say cuz i just went on the website.. ya they make adjustable cam gears, ah well its still a good idea nd saves u a hell of alot of werk nd money.. depends how far u want to get into the n/a tunning i guess..

Post by **Importroller** » Tue Oct 28, 2003 8:55 pm

HaveBlue wrote:what cam tuning? does anyone make adjustable cams for the ka24de?Since both the sohc and dohc make about the same power having a single cam is not a hinderance to performance.

I know this is a lil old, but the SOHC only makes 140hp at the crank, and the DOHC is 155hp

Post by **HaveBlue** » Tue Oct 28, 2003 8:55 pm

yep. except that it depends on what condition your engine is in, how well tuned it is etc.In this case since we are messing with entire engine setups the variances in the individual motors will outweigh and differences in stock performance.In theory a high comp DOHC motor should make more power but I bet if you build one sohc and one dohc the difference will be insignificant.

Post by **Importroller** » Tue Oct 28, 2003 8:55 pm

i posted this question in the altima section too, but would this possibly work for us FWD KADE owners by swapping in the KAE piston heads in the motor?

Post by **deviousKA** » Tue Oct 28, 2003 8:55 pm

HaveBlue wrote:if you buy high comp pistons you have to pull the motor and take apart the whole bottom end to put it in. if you swap on the sohc head, you just unbolt the head, get a new head gasket, do some mods and bolt it on. plus its cheaper: people are GIVING AWAY sohc heads. I dont see many people giving away high comp pistons.

You mean DOHC head right? E=65cc DE=45cc combustion chambers, an E head swap will never give higher compression.

Yes s13/altima, ka24e pistons in your fwd ka24de will give you 11:1 compression.

Oh and everyone, btw: If your putting ka24e pistons in your ka24de with the de rods, be sure to get the 240sx/stanza pistons only. These are full floating 21mm pins with retainers, same as ka24de. Ka24e truck engines have press fit pistons with no retaining clips and different pin tolerance (will not work without truck rods).

Post by **HaveBlue** » Tue Oct 28, 2003 8:55 pm

umm, yes.

nothing to see here, move along....

Post by **Rob97kingcabpu** » Tue Oct 28, 2003 8:55 pm

Okay, apart from the original guy on this post (gee, been so long since he's been here, I forgot his name.... oh yeah, Smug510), has ANYONE else ACTUALLY done this swap? As much as I'd like to buy into it, I'm not convinced this will work real well. I't looks good in theory, not too much mechanical work involved, but how will it run? Yes, I've seen the videos... real dark pics of someones hand reving up an engine that sounds like it is idleing around 2000 rpm and very rough at that. I'm not building a race car here, and want something that is going to be a streetable, daily driver. Will this thing idle? Will it melt pistons at high rpm? Will my gas mileage be in the single digits? Will the DOHC intake manifold fit under my hood? Will the stock DOHC exhaust manifold bolt up to my exhaust pipe? Does anyone else think about these things? Anyway, back to the orignal question; has anyone actually built one of these?

Post by **smug510** » Tue Oct 28, 2003 8:55 pm

Rob97kingcabpu wrote:Okay, apart from the original guy on this post (gee, been so long since he's been here, I forgot his name.... oh yeah, Smug510), has ANYONE else ACTUALLY done this swap? As much as I'd like to buy into it, I'm not convinced this will work real well. I't looks good in theory, not too much mechanical work involved, but how will it run? Yes, I've seen the videos... real dark pics of someones hand reving up an engine that sounds like it is idleing around 2000 rpm and very rough at that. I'm not building a race car here, and want something that is going to be a streetable, daily driver. Will this thing idle? Will it melt pistons at high rpm? Will my gas mileage be in the single digits? Will the DOHC intake manifold fit under my hood? Will the stock DOHC exhaust manifold bolt up to my exhaust pipe? Does anyone else think about these things? Anyway, back to the orignal question; has anyone actually built one of these?

wow , you would think you could have derived all of your awnsers out of 6 pages! , first off i did this stupid swap in a datsun 510 not a 240 , so your question will the dohc intake manifold clear your hood....really now the damn intake manifold doesent even pass the valve cover , and those videos were my car on race fuel and 370 injectors and open header , 11.7:1 tends to sound a little raspy open header , and really the only reason i did this stupid swap is to prove all the know it alls with like 2000 posts telling me its impossible , these guys are suposed to be ka specialist , hahaha what a joke , i learned more about ka's i one year than most people on this board, ive turboed a ka nitrous , high comp , well the its really easy to deside if you want to do the swap , if you dont think it will work DONT DO IT . easy huh , oh ya just for the record with sr20det injectors and race fuel this thing ran like a bat outa hell , so im done with the ka's my avatar is my new motor .

Post by **irax** » Tue Oct 28, 2003 8:55 pm

since your new motor is a SR how much you willing to sell your old KA motor ?that is if still in running condition? or if your willing to sell it...

Post by **cory2081** » Tue Oct 28, 2003 8:55 pm

All I want to know is, just how fast was it?? I'm in the process of building a DE, N/A setup for now, may spray it later or add some boost. I'm just curious as to how yours ran with the high compression and all.

Post by **Rob97kingcabpu** » Tue Oct 28, 2003 8:55 pm

smug510 wrote:wow , you would think you could have derived all of your awnsers out of 6 pages! , first off i did this stupid swap in a datsun 510 not a 240 , so your question will the dohc intake manifold clear your hood....really now the damn intake manifold doesent even pass the valve cover , and those videos were my car on race fuel and 370 injectors and open header , 11.7:1 tends to sound a little raspy open header , and really the only reason i did this stupid swap is to prove all the know it alls with like 2000 posts telling me its impossible , these guys are suposed to be ka specialist , hahaha what a joke , i learned more about ka's i one year than most people on this board, ive turboed a ka nitrous , high comp , well the its really easy to deside if you want to do the swap , if you dont think it will work DONT DO IT . easy huh , oh ya just for the record with sr20det injectors and race fuel this thing ran like a bat outa hell , so im done with the ka's my avatar is my new motor .

Dude, chill out. What you did with this swap is great, and many props to you for even trying. It is guys like you that are willing to try new stuff that will make it better for all of us, so for sure, thank you. As for the answers to my questions though, yeah, I did read all six pages, and no, not one of the questions I asked were answered there.1. Does it idle?2. What kind of mileage?3. Will it melt pistons (high c/r without careful engine management may work for a short time, but for how long?)?4. Does the exhaust fit? Okay, you answered this one in your reply. You are not using a 240.Point is, it was a great experiment, and you proved that it can be done. What I want to know though is how practical is it? I would assume most people on this forum arn't building race cars, so these are important factors to consider for a daily driver. I sure as hell ain't gonna try it if it won't idle, gives lousy mileage, and is gonna die a horrible death within a month or two.

Post by **smug510** » Tue Oct 28, 2003 8:55 pm

im sorry these are just things that i think would be common sense , does it idle , yes it uses all factory components i didnt use anything that didnt come stock on a 240 exept the injectors , but those are dropin , your gas milege will of coarse be a little worse but nothing in the single digits , thats just silly , nothing will melt as long as proper fuel is provided hence the sr injectors are 370's as to the ka's 270's and i belive the exaust will work b/c a dohc was offered in the same body style as the sohc , and where im from our race cars are our daily drivers , if you cant drive the car everyday its a waste of a car

Post by **smug510** » Tue Oct 28, 2003 8:55 pm

irax wrote:since your new motor is a SR how much you willing to sell your old KA motor ?that is if still in running condition? or if your willing to sell it...

i am trying to sell it but i threw it together so fast i overlooked some things like the cond of the rings and the cond of the valve seals so it smokes alot and i didnt want to take the time to find out which one , but its a complete motor and complete i mean the only thing missing is the header ( sold ) and injectors ,but i will include stock injectors, it comes with the ecu wirirng harness intake manifold head complete starter alternator coil distributor tranny ( 5 speed ), i will sell the whole thing for 450 shipped to wherever you are , e-mail me at [email protected] if you are interested

Post by **irax** » Tue Oct 28, 2003 8:55 pm

drop in for 240's or since the wirering harness and ecu was made for the 510 i just need to rewire everything and use a tuned 240 ecu ? ill think about it, but if i win some money in vegas ill drop you a line and pick up that motor ;-)

Post by **hotboy_intrigue** » Tue Oct 28, 2003 8:55 pm

email sent

Post by **SR20VET** » Tue Oct 28, 2003 8:55 pm

goomba240 wrote:I got the pistons out of a November 89 car. No one knows the month(if there is one) that it changed?? I guess im gonna have to check for clearence problems now...

IIRC the switch happened mid feb '89. I'm one of the unlucky bastards who got a low-comp feb '89 engine.:rolleyes

Post by **SR20VET** » Tue Oct 28, 2003 8:55 pm

dabum wrote:nah dont do that if u put the sohc head on ur block ya your going to get higher compression but at the same time your cam timing is going to be crap becuz your going to be usin the sohc cam and your intake/exhaust tunning? The cams arent seperate and u cant tune each cam seperately on advance and retard all u can do is advance intake and exhaust as the same degrees which will b shetty cause they are on the same cam.

If you put a single cam head on a dual cam engine you'd have lower compression not higher. You're taking the larger combustion chamber of the single cam and combining it with the deeper dish of the dual cam pistons. Hence lower compression.

Post by **better_than_sx** » Tue Oct 28, 2003 8:55 pm

Quote »IIRC the switch happened mid feb '89. I'm one of the unlucky bastards who got a low-comp feb '89 engine.[/quote] probly stupid q but--how can u tell?--vin #?

Post by **SR20VET** » Tue Oct 28, 2003 8:55 pm

No temp sensor. I didn't know the number to look for so I never bothered to verify that. I'd love to be proved wrong in this case but from what I can see it's a 8.6:1 motor.

Also now that I'm finally done reading this thread I have a few questions for you frankenstein guys. I'm currently swapping a '97 dual cam into one of my '89s for my daily driver. When thats done I'm taking the other '89 off the road and I wanted to build something completely different, and see what kind of power I can make N/A, then turbo it later if I'm not satisfied.

Here is the run down on what I was thinking of. I've just started to research this in hte last 2 days and info is pretty hard to come by so any pointers on alternative parts, or issues to look out for would be great.

I want to use the SOHC block I pulled, run a Z20 crank (fully counterweighted) and rods with 90.5mm (.060 overbore) KA pistons possibly higer compression but thats up in the air. Swap on a DOHC head, and run some cams lobed for high RPM power. This will be strictly a track car (not re-registering it) so streetability is not an issue. It will see mostly auto-x duty, with the occasional track day at Lime Rock, and mabey a drift even here and there.

What is needed to make this crank fit? Devious did you ever get these made? What kind of RPM increase can I expect from this setup? Again I'm only a couple of days into the Nissan hybrid scene, so I'm sure there is a lot I'm missing. Thanks for any advice.

Post by **eddiec** » Tue Oct 28, 2003 8:55 pm

look inside the drivers door to locate the build sticker. should say when mm/yy when manufactured.

Post by **better_than_sx** » Tue Oct 28, 2003 8:55 pm

nice--I have a november of 88

Post by **better_than_sx** » Tue Oct 28, 2003 8:55 pm

is ther any way you can tell by looking at numbers on the engine?--because i have another engine in it now--the old one is seized

Post by **SR20VET** » Tue Oct 28, 2003 8:55 pm

demcj wrote:i have no idea on the month, but all sohc engines that fall on/after serial number ka24-012039 have the lower compression.

-demetrius

Post by **better_than_sx** » Tue Oct 28, 2003 8:55 pm

thanx--and sorry:pface

Post by **sonorous986** » Fri Sep 03, 2004 8:51 am

so would this DE head to E block swap be possible on FWD KAs?

Post by **w1ngzer0** » Fri Sep 03, 2004 3:35 pm

blarg. Other then the full head and timing chain kit from the dohc what else do i need?

Post by **sonorous986** » Fri Sep 03, 2004 6:07 pm

i understand we need the ECU and distributor from the DOHC too right?

i should go down to the junker and grab a DOHC head from a first gen altima and go play with it.

ok guys here it is proof

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