Larger Throttle bodies...?

pulpmelon_Z · 10-26-2011, 05:06 AM

Whats the thottle bore on the stockers?

Motordyne · 10-26-2011, 11:19 AM

Probably minimal but the only way to really know is via test.

christian370z · 10-26-2011, 02:21 PM

Has anyone thought about smoothing out the throttle body where it meets the intake and making that lip smaller to smooth air flow? I did this with my old car and it made a very slight difference, but it's cheap and easy.

TypeOne · 10-26-2011, 04:47 PM

It would help for sure, but that would require testing to prove. I deal with 4 cylinders engines all day and I have seen 10%whp gains on our dyno with tuning from upgrading to a larger throttle body... 64mm to 70mm.

I'm not sure what the diameter is on the stock Z, but I could almost bet there would be some positive gain there.

pulpmelon_Z · 10-27-2011, 10:03 AM

A 64mm throttle provides enough air for a 2L 4 pot @ 225hp (factory throttle on Civic type R) I picked up 5hp with a 70mm.

So the throttle on the Z would have to be like sub 60mm to choke the 1.8L 3 Pot on each side

NeverBoneStck · 10-27-2011, 11:23 AM

Someone should jump on this ...

Methodical4u · 10-27-2011, 11:25 AM

if it's worth 10 or more whp, I agree.

azza12311 · 11-15-2015, 04:01 PM

How about putting a GTR throttle body ?. would that work with a retune ?

370Z JT · 11-15-2015, 04:08 PM

^ GTR tb = 370Z tb

Sent from my Nexus 6 using Tapatalk

Carbon_z · 11-16-2015, 12:42 PM

Actually they are the same and arent the same

The GT-R can be bored out much larger than the 370z ones. Max bore on 370z is around 64-65mm. GTR around 70mm

ps: 4 year old thread lol

10-26-2011, 02:21 PM	#3 (permalink)
christian370z A True Z Fanatic Join Date: Jul 2010 Location: Newport Beach Posts: 3,900 Drives: 2010 370Z/Saab 900se Rep Power: 433	Has anyone thought about smoothing out the throttle body where it meets the intake and making that lip smaller to smooth air flow? I did this with my old car and it made a very slight difference, but it's cheap and easy. __________________ -320whp / 259wftlbs- SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

10-27-2011, 11:23 AM	#6 (permalink)
NeverBoneStck A True Z Fanatic Join Date: Oct 2009 Location: Beaverton, Or Posts: 1,110 Drives: 2008 G37 S Rep Power: 18	Someone should jump on this ... __________________ Juiced! That is all you need to know !!

11-15-2015, 04:08 PM	#9 (permalink)
370Z JT A True Z Fanatic Join Date: Jan 2010 Location: United States Posts: 2,905 Drives: 370Z PW 7AT Rep Power: 379	^ GTR tb = 370Z tb Sent from my Nexus 6 using Tapatalk __________________ Click for My Journal Top Secret \| EVO-R \| Fujimura Auto \| Shine Auto \| Seibon \| MRWorks \| Swift \| SPC \| SSR \| UpRev \| Project Kics \| NST \| Titek \| Eibach \| Nismo \| Whiteline \| Quaife \| Invidia \| Fly1 \| CF Element \| Carbon Signal

11-16-2015, 12:42 PM	#10 (permalink)
Carbon_z A True Z Fanatic Join Date: Sep 2009 Location: Atlanta, GA Posts: 1,694 Drives: Carbon Fiber 370z Rep Power: 19	Actually they are the same and arent the same The GT-R can be bored out much larger than the 370z ones. Max bore on 370z is around 64-65mm. GTR around 70mm ps: 4 year old thread lol __________________ Full Carbon Fiber Nissan 370z "400zTT" Fully Built 4.0L Twin Turbo 1300hp, 1100whp. Follow me on Instagram at http://www.instagram.com/carbonz.

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10-26-2011, 05:06 AM	#1 (permalink)
pulpmelon_Z Base Member Join Date: Oct 2011 Location: UK Posts: 23 Drives: 370z Rep Power: 14	Whats the thottle bore on the stockers?

10-26-2011, 11:19 AM	#2 (permalink)
Motordyne Enthusiast Member Join Date: Nov 2008 Location: Los Angeles Posts: 384 Drives: Z Rep Power: 17	Probably minimal but the only way to really know is via test.

10-26-2011, 04:47 PM	#4 (permalink)
TypeOne A True Z Fanatic Join Date: Jul 2010 Location: Baton Rouge, LA Posts: 2,682 Drives: BSM 370 Rep Power: 1852	It would help for sure, but that would require testing to prove. I deal with 4 cylinders engines all day and I have seen 10%whp gains on our dyno with tuning from upgrading to a larger throttle body... 64mm to 70mm. I'm not sure what the diameter is on the stock Z, but I could almost bet there would be some positive gain there.

10-27-2011, 10:03 AM	#5 (permalink)
pulpmelon_Z Base Member Join Date: Oct 2011 Location: UK Posts: 23 Drives: 370z Rep Power: 14	A 64mm throttle provides enough air for a 2L 4 pot @ 225hp (factory throttle on Civic type R) I picked up 5hp with a 70mm. So the throttle on the Z would have to be like sub 60mm to choke the 1.8L 3 Pot on each side

10-27-2011, 11:25 AM	#7 (permalink)
Methodical4u A True Z Fanatic Join Date: Jun 2011 Location: Maryland Posts: 1,393 Drives: 11 370 6mt pw w/sp Rep Power: 17	if it's worth 10 or more whp, I agree.

11-15-2015, 04:01 PM	#8 (permalink)
azza12311 Base Member Join Date: Sep 2015 Location: australia Posts: 153 Drives: nissan 370z ,r34 Rep Power: 10	How about putting a GTR throttle body ?. would that work with a retune ?

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