Na Ka Faq - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ranisron · 06-12-2006, 07:16 AM

most high comp pistons for the DE is the 10.5 to 1 ratio. However, the E pistons can bump the compression all the way to 11 to 1 (correct me if I am wrong).

10.5 to 1 will run on pump gas no problem, and getting your ECU retuned for high comp application is recommended.

anything above 11:1 is unsafe for the KA (I think).

bouncin_180 · 06-12-2006, 02:06 PM

whats stock compression for a DE ... and where would i be able to get high comp pistons ... mostly i just find the low comp ones ...

tre · 06-12-2006, 05:03 PM

You can walk into any piston maker and they've probably already made high comp pistons for the DE.

If you're feeling good with your milling capabilites. You can pick up SOHC flat top pistons, mill in valve releifs and mill the piston to lower the compression to 11:1

irritatedmax · 06-15-2006, 11:27 PM

the only company i have seen advertise high compression ka pistons is supertech. they have a 10.5:1 set that goes for around $400.

as far as cams go, i have seen people use s13 sohc cams in the de is that beneficial in this case or is jwt the way to go. what is the difference in the lift/duration? as you can tell, i have more questions than answers but i am looking to build an na ka for reliability over turbo/power. i know above 200whp is pretty much impossible but i would like to see someone hit it.

articdragon192 · 06-20-2006, 07:53 PM

Quote:

Originally Posted by irritatedmax

the only company i have seen advertise high compression ka pistons is supertech. they have a 10.5:1 set that goes for around $400.

as far as cams go, i have seen people use s13 sohc cams in the de is that beneficial in this case or is jwt the way to go. what is the difference in the lift/duration? as you can tell, i have more questions than answers but i am looking to build an na ka for reliability over turbo/power. i know above 200whp is pretty much impossible but i would like to see someone hit it.

The SOHC cam doesnt fit the DE.

tre · 06-21-2006, 11:29 AM

Quote:

Originally Posted by irritatedmax

the only company i have seen advertise high compression ka pistons is supertech. they have a 10.5:1 set that goes for around $400.

as far as cams go, i have seen people use s13 sohc cams in the de is that beneficial in this case or is jwt the way to go. what is the difference in the lift/duration? as you can tell, i have more questions than answers but i am looking to build an na ka for reliability over turbo/power. i know above 200whp is pretty much impossible but i would like to see someone hit it.

When i'm done. I'll be over 200whp.

irritatedmax · 06-22-2006, 10:58 AM

Quote:

Originally Posted by tre

When i'm done. I'll be over 200whp.

spread the love, what is your setup? i have a spare ka that i will be building soon and am thinking about just going back to stock for reliability/cost effective but please share your setup. my main concern is that it is my daily driver and i will be entering med school so i need reliability and money will probably get tighter after undergrad.

tre · 06-23-2006, 11:22 AM

You want reliability. I'd just suggest Bolt ones. JWT cams/valve train and call it good.

This is my daily driver but i can catch a ride into work whenever it goes down and i have a spare engine in the garage. I'm doing all this experimentally.

BlueBucket · 07-17-2006, 06:38 PM

Posted this a while back with no response. Figured I'd put it in here this time with hopes of better luck. I was going to do my lifters soon in my 89 KA and I figured I might as well gain some HP since they're gonna take the cam out anyway. Do have an idea what kinda HP I might get with this cam on a stock motor? I asked Summit and they said "there are to many variables to determine such as what header, what intake, what injectors you are using". I told them it was a STOCK motor. How can I make it any more clear!!!!!!!!!!!!
The only thing I have is a cone filter in place of airbox and a 2.5 exhaust.
Here is link, hope you can give a general idea.

http://store.summitracing.com/partde...5&autoview=sku

TURBI · 08-07-2006, 03:11 AM

So what are your n/a ka24 et's?

I did a [email protected] with my 5spd 91' (i/h/e). This was done with an open diff with 3yr old 215/35/18's. I spun the whole 1st gear and over revved 1st to 4th gear (7800rpm/no rev limit/I don't know why) and had a super crappy 2.599 60ft. With an lsd and better driving I should easily do high 14's on street tires.

articdragon192 · 08-07-2006, 12:15 PM

7800 rpms is kinda dangerous on the KA no?

TURBI · 08-07-2006, 02:14 PM

Quote:

Originally Posted by articdragon192

7800 rpms is kinda dangerous on the KA no?

I was waiting for the rev limiter to kick in, but it never did. On neutral the fuel cuts very smoothly at 7800 rpm (tried this only once), unlike my 2001 1.8 sentra which feels like the motor is gonna explode from the rev limiter, or my stock 240 tach is just broken.

ZenkiSilvia · 08-07-2006, 03:29 PM

Any information about the xcessive motorsports intake manifold set up? Good gains? Quality? Any one have it even? =]
Comparitively to ITB's which would yield more bang for the buck?
Thanks.

HKSdrift3r · 08-08-2006, 02:18 PM

As for the ITB's, i'd love to have them but there is no way i can afford or even set up a stand alone fuel management. Ive seen a member from NICO do ITB's but had a plenum in order to use the maf. Ive tried contacting him, but he never responded. Does any one know where I can buy the plenum or instructions as to how to make one??

-thx, George

RephaYAH · 08-21-2006, 04:56 PM

wats fellas newbie here I'm really interested in this itb setup for the kade but wat happened hows the progress goin? anything new?

shayrgob240 · 09-06-2006, 09:35 PM

Quote:

Originally Posted by articdragon192

7800 rpms is kinda dangerous on the KA no?

doesn't make any sense either b/c the power curve decreases at higher RPMS.

ranisron · 09-07-2006, 09:30 PM

7800 is wayyyyyyyyyy too high for a KA... the stock limit is below 7K...

I don't know... KA is a great motor for making torque, and it's definitely not a high rev motor...

TURBI · 09-10-2006, 04:10 AM

So my tach must not be so accurate if the rev limiter should hit before 7000rpm. Also I don't feel any "ka falls flat on it's face after 6000rpm", my motor feels strong all the way to 6800rpm, maybe from the bolt-ons and shaved head.

Anyways, I still wish there was a bolt on centrifugal supercharger kit for the ka24de's. (at least 6psi)

HKSdrift3r · 10-02-2006, 06:40 PM

contact Thomas Knight at boosthead.com. He has made an S/C kit that is freakin' amazing. It uses the Eaton m62 blower. 175lb/tq at 2800 RPMS = teh sex

TurboDaytona · 10-07-2006, 03:54 PM

question, What about building an air box around the ITB's and then run a hose to or bolt the MAF on to the side of the air box? Then all you would need is something like the BIKI Rom setup and some dyno time and I think that would be a pretty good setup.

2nd question, Is the STOCK TB on the KADE actually 42mm? that seems very small to me. it looks more like 60mm. If it is 42mm, Isn't the KA-E 60mm? I know that is good upgrade for the VG30ET

matt4pl · 10-07-2006, 10:57 PM

a plenum for ITB's is a totally custom job. i had one made, but am no longer using it cause i went to standalone. the ITB's definately change the character of hte motor more then the peak power and teh sound is amazing.

PS: if anyone wants the plenum, email me

RoyalFlush · 10-07-2006, 11:01 PM

i know this is probably a stupid question, but i have no idea. are ITB's gonna decrease the life or dependability of your engine? will they last? any info would be great!

TURBI · 10-11-2006, 02:21 PM

Maybe something like this would work. It's a fully built ka24de in a 72' 510 with mikuni side drafts and a t3/t4 turbo set up here on Saipan.

theicecreamdan · 10-12-2006, 11:13 AM

Quote:

Originally Posted by HKSdrift3r

As for the ITB's, i'd love to have them but there is no way i can afford or even set up a stand alone fuel management. Ive seen a member from NICO do ITB's but had a plenum in order to use the maf. Ive tried contacting him, but he never responded. Does any one know where I can buy the plenum or instructions as to how to make one??

-thx, George

e bay

Iceman00 · 10-16-2006, 08:49 PM

Cams decide were the power is made. The KA falls flat on its face because of the mild Stock cams.

BBSilvia · 11-26-2006, 04:00 PM

i just got a 89 240. its lacking power of course, yet i dont want to lose the n/a reliabilty. plus its my first car and my rents dont want me to have a turbo (so no sr) because it will be too fast of a first car. so im thinking about getting a 16 valve ka and swapping it with my 12 valve. then ill do basic bolt ons and ill be done. hoe does this sound?

ms!3 · 11-26-2006, 05:07 PM

lol i have fallin in love with n/a ka's

. once i am closed to being finished and relize that my setup is still to slow and itll cost way to much money to make an na ka faster then ill boost. lol

TurboDaytona · 12-01-2006, 05:25 PM

are there any final results for this yet?

ms!3 · 12-10-2006, 06:55 PM

yea id kinda like to see dyno sheets and more info. where ya at bigvinnie?

tre · 12-18-2006, 12:07 PM

I'm running ona weaker engine atm. But A stand alone system and i'd be good for about an 8Krpm rev.

Cam's i have in car power band starts at 4K. VERY streetable.

06-12-2006, 07:16 AM	#31
ranisron Zilvia Addict Join Date: Aug 2003 Location: Bloomington, IN Age: 43 Posts: 766 Trader Rating: (0) Feedback Score: 0 reviews	most high comp pistons for the DE is the 10.5 to 1 ratio. However, the E pistons can bump the compression all the way to 11 to 1 (correct me if I am wrong). 10.5 to 1 will run on pump gas no problem, and getting your ECU retuned for high comp application is recommended. anything above 11:1 is unsafe for the KA (I think). __________________ U13 and S13 zilvia members are friendly

06-12-2006, 05:03 PM	#33
tre Zilvia Junkie Join Date: Apr 2006 Location: Seattle, WA Posts: 544 Trader Rating: (0) Feedback Score: 0 reviews	You can walk into any piston maker and they've probably already made high comp pistons for the DE. If you're feeling good with your milling capabilites. You can pick up SOHC flat top pistons, mill in valve releifs and mill the piston to lower the compression to 11:1 __________________ I didn't buy an Audi because it is a Great Car, but for more of a reason to be an asshole.

06-23-2006, 11:22 AM	#38
tre Zilvia Junkie Join Date: Apr 2006 Location: Seattle, WA Posts: 544 Trader Rating: (0) Feedback Score: 0 reviews	You want reliability. I'd just suggest Bolt ones. JWT cams/valve train and call it good. This is my daily driver but i can catch a ride into work whenever it goes down and i have a spare engine in the garage. I'm doing all this experimentally. __________________ I didn't buy an Audi because it is a Great Car, but for more of a reason to be an asshole.

07-17-2006, 06:38 PM	#39
BlueBucket Join Date: May 2006 Location: Ohio Posts: 5 Trader Rating: (0) Feedback Score: 0 reviews	Posted this a while back with no response. Figured I'd put it in here this time with hopes of better luck. I was going to do my lifters soon in my 89 KA and I figured I might as well gain some HP since they're gonna take the cam out anyway. Do have an idea what kinda HP I might get with this cam on a stock motor? I asked Summit and they said "there are to many variables to determine such as what header, what intake, what injectors you are using". I told them it was a STOCK motor. How can I make it any more clear!!!!!!!!!!!! The only thing I have is a cone filter in place of airbox and a 2.5 exhaust. Here is link, hope you can give a general idea. http://store.summitracing.com/partde...5&autoview=sku __________________ 89 240sx coupe 17x7.5 ALESSIO Monza's 205/40 ZR Ecsta Supra's K&N cone filter, 2.5 exhaust

08-07-2006, 03:29 PM	#43
ZenkiSilvia Leaky Injector Join Date: Dec 2005 Location: Pacifica, CA! Posts: 68 Trader Rating: (0) Feedback Score: 0 reviews	Hrmm Any information about the xcessive motorsports intake manifold set up? Good gains? Quality? Any one have it even? =] Comparitively to ITB's which would yield more bang for the buck? Thanks.

06-12-2006, 02:06 PM	#32
bouncin_180 Zilvia Junkie Join Date: Oct 2003 Location: San Diego Posts: 356 Trader Rating: (1) Feedback Score: 1 reviews	whats stock compression for a DE ... and where would i be able to get high comp pistons ... mostly i just find the low comp ones ...

06-15-2006, 11:27 PM	#34
irritatedmax Zilvia FREAK! Join Date: Sep 2005 Location: Ashland, NE Age: 39 Posts: 1,359 Trader Rating: (20) Feedback Score: 20 reviews	the only company i have seen advertise high compression ka pistons is supertech. they have a 10.5:1 set that goes for around $400. as far as cams go, i have seen people use s13 sohc cams in the de is that beneficial in this case or is jwt the way to go. what is the difference in the lift/duration? as you can tell, i have more questions than answers but i am looking to build an na ka for reliability over turbo/power. i know above 200whp is pretty much impossible but i would like to see someone hit it.

08-07-2006, 03:11 AM	#40
TURBI Leaky Injector Join Date: Sep 2005 Location: SAIPAN, CNMI Posts: 59 Trader Rating: (0) Feedback Score: 0 reviews	So what are your n/a ka24 et's? I did a [email protected] with my 5spd 91' (i/h/e). This was done with an open diff with 3yr old 215/35/18's. I spun the whole 1st gear and over revved 1st to 4th gear (7800rpm/no rev limit/I don't know why) and had a super crappy 2.599 60ft. With an lsd and better driving I should easily do high 14's on street tires.

08-07-2006, 12:15 PM	#41
articdragon192 Post Whore! Join Date: Jan 2005 Location: West covina Age: 39 Posts: 6,792 Trader Rating: (9) Feedback Score: 9 reviews	7800 rpms is kinda dangerous on the KA no?

08-08-2006, 02:18 PM	#44
HKSdrift3r Zilvia Junkie Join Date: Dec 2005 Location: Central Jersey Posts: 347 Trader Rating: (1) Feedback Score: 1 reviews	As for the ITB's, i'd love to have them but there is no way i can afford or even set up a stand alone fuel management. Ive seen a member from NICO do ITB's but had a plenum in order to use the maf. Ive tried contacting him, but he never responded. Does any one know where I can buy the plenum or instructions as to how to make one?? -thx, George

08-21-2006, 04:56 PM	#45
RephaYAH Join Date: Jun 2006 Location: Miramar,FL Posts: 1 Trader Rating: (0) Feedback Score: 0 reviews	wats fellas newbie here I'm really interested in this itb setup for the kade but wat happened hows the progress goin? anything new?

09-07-2006, 09:30 PM	#47
ranisron Zilvia Addict Join Date: Aug 2003 Location: Bloomington, IN Age: 43 Posts: 766 Trader Rating: (0) Feedback Score: 0 reviews	7800 is wayyyyyyyyyy too high for a KA... the stock limit is below 7K... I don't know... KA is a great motor for making torque, and it's definitely not a high rev motor... __________________ U13 and S13 zilvia members are friendly

09-10-2006, 04:10 AM	#48
TURBI Leaky Injector Join Date: Sep 2005 Location: SAIPAN, CNMI Posts: 59 Trader Rating: (0) Feedback Score: 0 reviews	So my tach must not be so accurate if the rev limiter should hit before 7000rpm. Also I don't feel any "ka falls flat on it's face after 6000rpm", my motor feels strong all the way to 6800rpm, maybe from the bolt-ons and shaved head. Anyways, I still wish there was a bolt on centrifugal supercharger kit for the ka24de's. (at least 6psi)

10-02-2006, 06:40 PM	#49
HKSdrift3r Zilvia Junkie Join Date: Dec 2005 Location: Central Jersey Posts: 347 Trader Rating: (1) Feedback Score: 1 reviews	contact Thomas Knight at boosthead.com. He has made an S/C kit that is freakin' amazing. It uses the Eaton m62 blower. 175lb/tq at 2800 RPMS = teh sex

10-07-2006, 03:54 PM	#50
TurboDaytona Zilvia Member Join Date: Apr 2006 Location: Kansas City, MO Posts: 204 Trader Rating: (2) Feedback Score: 2 reviews	question, What about building an air box around the ITB's and then run a hose to or bolt the MAF on to the side of the air box? Then all you would need is something like the BIKI Rom setup and some dyno time and I think that would be a pretty good setup. 2nd question, Is the STOCK TB on the KADE actually 42mm? that seems very small to me. it looks more like 60mm. If it is 42mm, Isn't the KA-E 60mm? I know that is good upgrade for the VG30ET

10-07-2006, 10:57 PM	#51
matt4pl Join Date: Sep 2005 Location: Chicago Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	a plenum for ITB's is a totally custom job. i had one made, but am no longer using it cause i went to standalone. the ITB's definately change the character of hte motor more then the peak power and teh sound is amazing. PS: if anyone wants the plenum, email me

10-07-2006, 11:01 PM	#52
RoyalFlush Zilvia Member Join Date: Sep 2006 Location: worldwide Posts: 191 Trader Rating: (0) Feedback Score: 0 reviews	i know this is probably a stupid question, but i have no idea. are ITB's gonna decrease the life or dependability of your engine? will they last? any info would be great!

10-11-2006, 02:21 PM	#53
TURBI Leaky Injector Join Date: Sep 2005 Location: SAIPAN, CNMI Posts: 59 Trader Rating: (0) Feedback Score: 0 reviews	Maybe something like this would work. It's a fully built ka24de in a 72' 510 with mikuni side drafts and a t3/t4 turbo set up here on Saipan.

10-16-2006, 08:49 PM	#55
Iceman00 Zilvia Member Join Date: Oct 2006 Location: Around Posts: 170 Trader Rating: (0) Feedback Score: 0 reviews	Cams decide were the power is made. The KA falls flat on its face because of the mild Stock cams.

11-26-2006, 04:00 PM	#56
BBSilvia Zilvia Addict Join Date: Nov 2006 Location: 818 Posts: 709 Trader Rating: (0) Feedback Score: 0 reviews	i just got a 89 240. its lacking power of course, yet i dont want to lose the n/a reliabilty. plus its my first car and my rents dont want me to have a turbo (so no sr) because it will be too fast of a first car. so im thinking about getting a 16 valve ka and swapping it with my 12 valve. then ill do basic bolt ons and ill be done. hoe does this sound? __________________

11-26-2006, 05:07 PM	#57
ms!3 Zilvia FREAK! Join Date: Apr 2006 Location: USA Age: 35 Posts: 1,563 Trader Rating: (7) Feedback Score: 7 reviews	lol i have fallin in love with n/a ka's. once i am closed to being finished and relize that my setup is still to slow and itll cost way to much money to make an na ka faster then ill boost. lol

12-01-2006, 05:25 PM	#58
TurboDaytona Zilvia Member Join Date: Apr 2006 Location: Kansas City, MO Posts: 204 Trader Rating: (2) Feedback Score: 2 reviews	are there any final results for this yet?

12-10-2006, 06:55 PM	#59
ms!3 Zilvia FREAK! Join Date: Apr 2006 Location: USA Age: 35 Posts: 1,563 Trader Rating: (7) Feedback Score: 7 reviews	yea id kinda like to see dyno sheets and more info. where ya at bigvinnie?

12-18-2006, 12:07 PM	#60
tre Zilvia Junkie Join Date: Apr 2006 Location: Seattle, WA Posts: 544 Trader Rating: (0) Feedback Score: 0 reviews	I'm running ona weaker engine atm. But A stand alone system and i'd be good for about an 8Krpm rev. Cam's i have in car power band starts at 4K. VERY streetable. __________________ I didn't buy an Audi because it is a Great Car, but for more of a reason to be an asshole.