TB worth boring? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

driftkid316 · 02-21-2006, 12:25 AM

im going to rebuilding my ka24de and am going to be doing a few things to it while at it. my setup is gona basically be:
intake
headers
full straight 2.5" exhaust
sohc pistons
balanced crankshaft
port head on intake side
port matched intake manifold

i think thats basically it. but my question is, is it worth boring my throttle body with the power ill probably be putting out? or would it mostly be reccommended for higher power cars like turbo cars or something. if it is a good idea, what the max bore i should do? thanks

Maeda · 02-21-2006, 12:51 AM

wait wait wait.

You're going to do the high comp KA with no 3inch exhaust?

EDIT: TB not worth boring. TB, single, not cool. ITB's plural, very cool.

miked808 · 02-21-2006, 01:31 AM

Boring the Throttle Body is a good cheap mod. Slight power increase and very good throttle response. But the opening on The Intake Manifold where the Throttle Body bolts up will need to be opened up with a Dremel or Similar tool.

infinitexsound · 02-21-2006, 01:37 AM

or u can just hack the flange off and weld on a larger tb flange, and use a tb w/ a map sensor and tps sensor.... and get rid of the maf.... in general...

so ive heard of ppl running q45 maf and tb... but this is just what ive heard... nothing seriously seen yet...

Maeda · 02-21-2006, 01:40 AM

I thought the q45 thing is an SR thing...
I'm curious...
Why are you throwing down money on NA KA and not t to the urbo?

I mean even scooter succumbed to the power of the dark side...

infinitexsound · 02-21-2006, 01:42 AM

my bad yeah it is.... thanks maeda... but id still totally hack that TB flange off and run a better TB more simple then running one with a maf....

something like this

http://www.rossmachineracing.com/uni_intakeparts.html

and call it a day...

driftkid316 · 02-21-2006, 01:49 AM

cause the power ill be putting out should be enough me and my little corolla. i just wana try the na thing for awhile. il probably build another motor for turbo way later on.

Maeda · 02-21-2006, 01:55 AM

Really?

With ITBs, some head work, cams, headers, exhaust and a standalone! I don't think scooter made more then 175 RWHP

You don't fully understand the full power darkside.
T3 + Mani + SR injectors + Pump + Safc + Sidemount = hello 200 RWHP

TougeSR20Kid · 02-21-2006, 03:15 AM

boring the TB will do nothing unless you bore the intake plenum i suggest you forget ka na and piece together a turbo kit... it'll be difficult and cost you money but the na set up you speak of is expensive (machine work and balanced crank = $$$$)... if you are set on having high comp then i'm told the best way to do it is SOHC pistons (you had that right), 91 spec cams, z32 fuel filter, exhaust, intake, and if you wanna spend the money a good port polishing job on the head wouldnt hurt...

did you say your putting this in a corolla? i was confused about that statement

trust me dude turbo is way better

WILDACEX187 · 02-21-2006, 03:53 AM

i think hes putting it in a a86 in that case 160 hp is very good. lots of torque too. good luck.

neverlift · 02-21-2006, 06:13 AM

do both sides of t/b and intake plenum matched but don't over do it you could use a brake cylinder hone depending on the size and cutting stones you use

sxse240 · 02-21-2006, 08:52 AM

If you're going to bore the throttle body, I'd go here: http://www.maxbore.com

240trainee · 02-21-2006, 09:11 AM

Quote:

Originally Posted by sxse240

If you're going to bore the throttle body, I'd go here: http://www.maxbore.com

Thats the guy I plan on using, going to put a KA24E throttle body bored put onto my CA. A guy in nico got his KA throttle body done and posted results pictures. top notch

sdtouge · 02-21-2006, 10:44 AM

some guys are just into n/a
my last 240 was turbo and i dont really like it right now. turbos blow, its expensive, its messy, shit blows off like piping etc, and mine was a simple stock manifold, semi stock piping and upgraded smic w/ gt28r.... anyways turbo=alot of work and alot of mess oil everywhere.

highkck · 02-21-2006, 02:19 PM

I had Maxbore.com do my KA24DE TB. The gains are nice. I felt alot on the A$$ dyno. The Torque increased. Its recommended whether your Turboed or NA. THe bottom plenum on the manifold has about a 1-2mm that can be bored out. I plan on boring mine out after I pull the manifold to replace the headgasket during turbo install. Ive inclosed pictures of what maxbore does. He'll take the stock TB (63mm) and bore it to 70mm give are take 1mm. Here is a post and pictures on nicoclub. I did a write up on this mod.

http://forums.nicoclub.com/zerothread?id=143227

And for the people that think the MAF is a limiting factor that will be going away when Im boosted so its really not an issue.

*MELLO*SOS* · 02-21-2006, 02:41 PM

Cool, I think I might send my RB20 TB and manifold to him for boring (and CLEANING!). Does he send you the matching gasket back with the TB?

highkck · 02-21-2006, 06:09 PM

Send him a nissan gasket so he can match it and send it back to you. Other wise he will just take it to the max of the equipment.

infinitexsound · 02-21-2006, 06:10 PM

u dont need ITB to get big NA power... i know so... u can run something similar to what i posted.. and its just about the same as running itb... but get rid of the ugly ass MAF...

Maeda · 02-22-2006, 02:15 AM

+1 for getting rid of ugly MAFs.

02-21-2006, 12:25 AM	#1
driftkid316 Zilvia Member Join Date: Apr 2005 Location: corona, ca Posts: 198 Trader Rating: (2) Feedback Score: 2 reviews	TB worth boring? im going to rebuilding my ka24de and am going to be doing a few things to it while at it. my setup is gona basically be: intake headers full straight 2.5" exhaust sohc pistons balanced crankshaft port head on intake side port matched intake manifold i think thats basically it. but my question is, is it worth boring my throttle body with the power ill probably be putting out? or would it mostly be reccommended for higher power cars like turbo cars or something. if it is a good idea, what the max bore i should do? thanks

02-21-2006, 12:51 AM	#2
Maeda Nissanaholic! Join Date: Dec 2002 Location: Camp Snake Bite, CA RIP Posts: 2,356 Trader Rating: (0) Rides Gallery: Maeda Feedback Score: 0 reviews	wait wait wait. You're going to do the high comp KA with no 3inch exhaust? EDIT: TB not worth boring. TB, single, not cool. ITB's plural, very cool. __________________

02-21-2006, 01:37 AM	#4
infinitexsound Post Whore! Join Date: Sep 2003 Location: INtraweb Age: 42 Posts: 3,522 Trader Rating: (0) Feedback Score: 0 reviews	or u can just hack the flange off and weld on a larger tb flange, and use a tb w/ a map sensor and tps sensor.... and get rid of the maf.... in general... so ive heard of ppl running q45 maf and tb... but this is just what ive heard... nothing seriously seen yet... __________________ S14 TrackSlut coming to a raceway near you... 510 TimeAttack on its way...

02-21-2006, 01:40 AM	#5
Maeda Nissanaholic! Join Date: Dec 2002 Location: Camp Snake Bite, CA RIP Posts: 2,356 Trader Rating: (0) Rides Gallery: Maeda Feedback Score: 0 reviews	I thought the q45 thing is an SR thing... I'm curious... Why are you throwing down money on NA KA and not t to the urbo? I mean even scooter succumbed to the power of the dark side... __________________

02-21-2006, 01:42 AM	#6
infinitexsound Post Whore! Join Date: Sep 2003 Location: INtraweb Age: 42 Posts: 3,522 Trader Rating: (0) Feedback Score: 0 reviews	my bad yeah it is.... thanks maeda... but id still totally hack that TB flange off and run a better TB more simple then running one with a maf.... something like this http://www.rossmachineracing.com/uni_intakeparts.html and call it a day... __________________ S14 TrackSlut coming to a raceway near you... 510 TimeAttack on its way...

02-21-2006, 01:31 AM	#3
miked808 Join Date: Jan 2005 Location: Alexandria, VA. Posts: 23 Trader Rating: (0) Feedback Score: 0 reviews	Boring the Throttle Body is a good cheap mod. Slight power increase and very good throttle response. But the opening on The Intake Manifold where the Throttle Body bolts up will need to be opened up with a Dremel or Similar tool.

02-21-2006, 01:49 AM	#7
driftkid316 Zilvia Member Join Date: Apr 2005 Location: corona, ca Posts: 198 Trader Rating: (2) Feedback Score: 2 reviews	cause the power ill be putting out should be enough me and my little corolla. i just wana try the na thing for awhile. il probably build another motor for turbo way later on.

02-21-2006, 01:55 AM	#8
Maeda Nissanaholic! Join Date: Dec 2002 Location: Camp Snake Bite, CA RIP Posts: 2,356 Trader Rating: (0) Rides Gallery: Maeda Feedback Score: 0 reviews	Really? With ITBs, some head work, cams, headers, exhaust and a standalone! I don't think scooter made more then 175 RWHP You don't fully understand the full power darkside. T3 + Mani + SR injectors + Pump + Safc + Sidemount = hello 200 RWHP __________________

02-21-2006, 03:15 AM	#9
TougeSR20Kid Zilvia Junkie Join Date: Dec 2005 Location: Seattle WA Age: 38 Posts: 452 Trader Rating: (1) Feedback Score: 1 reviews	boring the TB will do nothing unless you bore the intake plenum i suggest you forget ka na and piece together a turbo kit... it'll be difficult and cost you money but the na set up you speak of is expensive (machine work and balanced crank = $$$$)... if you are set on having high comp then i'm told the best way to do it is SOHC pistons (you had that right), 91 spec cams, z32 fuel filter, exhaust, intake, and if you wanna spend the money a good port polishing job on the head wouldnt hurt... did you say your putting this in a corolla? i was confused about that statement trust me dude turbo is way better

02-21-2006, 03:53 AM	#10
WILDACEX187 Post Whore! Join Date: Jan 2003 Location: QUEENZ, NYC Age: 42 Posts: 3,103 Trader Rating: (4) Feedback Score: 4 reviews	i think hes putting it in a a86 in that case 160 hp is very good. lots of torque too. good luck. __________________ SR POWA COUPE LUVVV!!!

02-21-2006, 06:13 AM	#11
neverlift Zilvia Member Join Date: Jan 2006 Location: DUVAL Posts: 166 Trader Rating: (0) Feedback Score: 0 reviews	do both sides of t/b and intake plenum matched but don't over do it you could use a brake cylinder hone depending on the size and cutting stones you use __________________ derp derp

02-21-2006, 08:52 AM	#12
sxse240 Leaky Injector Join Date: Apr 2003 Location: NM Posts: 95 Trader Rating: (1) Feedback Score: 1 reviews	If you're going to bore the throttle body, I'd go here: http://www.maxbore.com

02-21-2006, 10:44 AM	#14
sdtouge BANNED Join Date: Dec 2004 Location: san diego Posts: 479 Trader Rating: (0) Feedback Score: 0 reviews	some guys are just into n/a my last 240 was turbo and i dont really like it right now. turbos blow, its expensive, its messy, shit blows off like piping etc, and mine was a simple stock manifold, semi stock piping and upgraded smic w/ gt28r.... anyways turbo=alot of work and alot of mess oil everywhere.

02-21-2006, 02:19 PM	#15
highkck Leaky Injector Join Date: Nov 2003 Location: oklahoma Age: 42 Posts: 78 Trader Rating: (1) Feedback Score: 1 reviews	Here is the down low on the TB boring. I had Maxbore.com do my KA24DE TB. The gains are nice. I felt alot on the A$$ dyno. The Torque increased. Its recommended whether your Turboed or NA. THe bottom plenum on the manifold has about a 1-2mm that can be bored out. I plan on boring mine out after I pull the manifold to replace the headgasket during turbo install. Ive inclosed pictures of what maxbore does. He'll take the stock TB (63mm) and bore it to 70mm give are take 1mm. Here is a post and pictures on nicoclub. I did a write up on this mod. http://forums.nicoclub.com/zerothread?id=143227 And for the people that think the MAF is a limiting factor that will be going away when Im boosted so its really not an issue. __________________ Zack "95 240sx SE"

02-21-2006, 02:41 PM	#16
MELLOSOS* LAID OUT Join Date: Mar 2004 Location: LAS VEGAS Age: 43 Posts: 2,015 Trader Rating: (1) Rides Gallery: MELLO*SOS Feedback Score: 1 reviews	Cool, I think I might send my RB20 TB and manifold to him for boring (and CLEANING!). Does he send you the matching gasket back with the TB?

02-21-2006, 06:09 PM	#17
highkck Leaky Injector Join Date: Nov 2003 Location: oklahoma Age: 42 Posts: 78 Trader Rating: (1) Feedback Score: 1 reviews	Send him a nissan gasket so he can match it and send it back to you. Other wise he will just take it to the max of the equipment. __________________ Zack "95 240sx SE"

02-21-2006, 06:10 PM	#18
infinitexsound Post Whore! Join Date: Sep 2003 Location: INtraweb Age: 42 Posts: 3,522 Trader Rating: (0) Feedback Score: 0 reviews	u dont need ITB to get big NA power... i know so... u can run something similar to what i posted.. and its just about the same as running itb... but get rid of the ugly ass MAF... __________________ S14 TrackSlut coming to a raceway near you... 510 TimeAttack on its way...

02-22-2006, 02:15 AM	#19
Maeda Nissanaholic! Join Date: Dec 2002 Location: Camp Snake Bite, CA RIP Posts: 2,356 Trader Rating: (0) Rides Gallery: Maeda Feedback Score: 0 reviews	+1 for getting rid of ugly MAFs. __________________