Throttle body ???

ScotyBRAVO · 03-28-2012, 04:01 PM

Has anyone attempted to screw around with a larger throttle body on the VQ37VHR??

SPOHN · 03-28-2012, 05:54 PM

There was one member that bored his out. But I don't think he ever got back to us on results. Mods of this nature are really not going to do much. Stick with the basic.

ScotyBRAVO · 03-28-2012, 11:24 PM

Thanks!

Megan370z · 03-29-2012, 01:17 PM

im the one who did the mod and from a relatively quick test at the time , it did show a positive result.

I said in a same topic previous post , that I would redo the test in April with a before and after both tuned.
Im still planning for this , I just came back this morning from a Military exercice in Ft Irwing,California and I have 2 week off , I might manage to do it around the end.

Im even looking to do a modification in the near future to accept 2x DE Throttle body (people say they are anything between 68-70mm) instead of the 60mm on the OEM VHR throttle body

TypeOne · 03-29-2012, 01:34 PM

The OEM units on our cars are 60mm?

I tried to contact MaxBore.com about doing it and he said that it was possible but then never got back with me after.

It may be possible to bore the stock ones out for more airflow and then port match the runners on the intake manifold.

Megan370z · 03-29-2012, 01:44 PM

Quote:

Originally Posted by TypeOne

The OEM units on our cars are 60mm?

I tried to contact MaxBore.com about doing it and he said that it was possible but then never got back with me after.

It may be possible to bore the stock ones out for more airflow and then port match the runners on the intake manifold.

yup the VHR TB are 60mm each and I bored mine to 62.5mm
ofcourse it require a bigger butterfly plate and you will need to adjust the idle screw which is loctited very hard !!

I cant say anything about the intake manifold...

BigT · 03-29-2012, 04:20 PM

Isn't the intake manifold plastic? If the inlet on the manifold cannot be opened up, there is no point to a larger throttlebody.

Megan370z · 03-29-2012, 04:46 PM

Quote:

Originally Posted by BigT

Isn't the intake manifold plastic? If the inlet on the manifold cannot be opened up, there is no point to a larger throttlebody.

the opening on the intake manifold is about 64mm
so a bored out TB does work fine

svt to 370z · 03-29-2012, 08:15 PM

seems like it could be alot of work for minimal benefit.

370Z JT · 04-10-2012, 08:37 PM

Quote:

Originally Posted by Megan370z

I said in a same topic previous post , that I would redo the test in April with a before and after both tuned.
Im still planning for this , I just came back this morning from a Military exercice in Ft Irwing,California and I have 2 week off , I might manage to do it around the end.

are you still planning to do this?

Megan370z · 04-11-2012, 05:30 AM

I called yesterday for an appointment on the 28April

Valentino · 04-11-2012, 07:29 AM

Good luck...

Mine's has High Flow Throttles body. They are 2.5mm wider then stock too.

Megan370z · 04-11-2012, 09:55 AM

Quote:

Originally Posted by Valentino

Good luck...

Mine's has High Flow Throttles body. They are 2.5mm wider then stock too.

the 2 I have have a higher flow than mines...

370Z JT · 04-12-2012, 02:15 AM

Quote:

Originally Posted by Megan370z

the 2 I have have a higher flow than mines...

Did you enlarge the intake piping as well?

Megan370z · 04-12-2012, 05:34 AM

Quote:

Originally Posted by 370Z JT

Did you enlarge the intake piping as well?

the inlet on the intake manifold is about 63-64mm

my CAI start at 3'' then has a reducer down to about 64mm at the MAF(cant rememeber exactly , then got back up to 2 3/4 at the Throtlte body''

it is a custom CAI that I had made 2 years ago

03-28-2012, 04:01 PM	#1 (permalink)
ScotyBRAVO Base Member Join Date: Mar 2012 Location: Scottsdale AZ Posts: 38 Drives: 2012 370Z SR Rep Power: 13	Throttle body ??? Has anyone attempted to screw around with a larger throttle body on the VQ37VHR??

03-28-2012, 05:54 PM	#2 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 45 Posts: 14,844 Drives: Waiting on next Z Rep Power: 221	There was one member that bored his out. But I don't think he ever got back to us on results. Mods of this nature are really not going to do much. Stick with the basic. __________________

03-29-2012, 01:17 PM	#4 (permalink)
Megan370z A True Z Fanatic Join Date: Oct 2009 Location: Canada Posts: 1,156 Drives: 370z Rep Power: 23	im the one who did the mod and from a relatively quick test at the time , it did show a positive result. I said in a same topic previous post , that I would redo the test in April with a before and after both tuned. Im still planning for this , I just came back this morning from a Military exercice in Ft Irwing,California and I have 2 week off , I might manage to do it around the end. Im even looking to do a modification in the near future to accept 2x DE Throttle body (people say they are anything between 68-70mm) instead of the 60mm on the OEM VHR throttle body __________________ Megan Journal Click Me ....................One Man Team Motorsport Click Me

04-11-2012, 05:30 AM	#11 (permalink)
Megan370z A True Z Fanatic Join Date: Oct 2009 Location: Canada Posts: 1,156 Drives: 370z Rep Power: 23	I called yesterday for an appointment on the 28April __________________ Megan Journal Click Me ....................One Man Team Motorsport Click Me

04-11-2012, 07:29 AM	#12 (permalink)
Valentino Enthusiast Member Join Date: Jan 2009 Location: RaceTrack Posts: 349 Drives: SOLD 09,370z,M6 Rep Power: 305	Good luck... Mine's has High Flow Throttles body. They are 2.5mm wider then stock too. __________________ Lou Fusz Nissan \| KW V3 \| SPL rear camber and toe bolt \| OS Giken LSD \| Nismo Diff cover \| Engine Oil cooler \| F.I. TDX Cat Back 18" Resonators \| F.I. Resonated Test Pipes \| Injen cold air intake \| COBB AccessPORT \| JWT Clutch Flywheel \|

03-28-2012, 11:24 PM	#3 (permalink)
ScotyBRAVO Base Member Join Date: Mar 2012 Location: Scottsdale AZ Posts: 38 Drives: 2012 370Z SR Rep Power: 13	Thanks!

03-29-2012, 01:34 PM	#5 (permalink)
TypeOne A True Z Fanatic Join Date: Jul 2010 Location: Baton Rouge, LA Posts: 2,682 Drives: BSM 370 Rep Power: 1850	The OEM units on our cars are 60mm? I tried to contact MaxBore.com about doing it and he said that it was possible but then never got back with me after. It may be possible to bore the stock ones out for more airflow and then port match the runners on the intake manifold.

03-29-2012, 04:20 PM	#7 (permalink)
BigT Enthusiast Member Join Date: Jan 2012 Location: NJ Posts: 469 Drives: 98 2g DSM Rep Power: 13	Isn't the intake manifold plastic? If the inlet on the manifold cannot be opened up, there is no point to a larger throttlebody.

03-29-2012, 08:15 PM	#9 (permalink)
svt to 370z Base Member Join Date: May 2011 Location: berea,oh Posts: 139 Drives: 09 red 370z 6mt Rep Power: 13	seems like it could be alot of work for minimal benefit.

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