Larger Throttle bodies...?

TypeOne · 10-25-2011, 04:12 PM

Anyone ever thought about using larger throttle bodies? I sent an email over to MaxBore to see if they would be willing to look at boring out a 370Z TB.

Obviously enlarging the intake manifold inlets is a must, but from my experience with all motor cars, this can really free up some hidden power.

http://www.maxbore.com/

Thoughts, ideas or opinions?

UTAMAV · 10-25-2011, 04:20 PM

Curious what that would do with the Motordyne Plenum? Would it foul up your A/F ratio?

TypeOne · 10-25-2011, 04:22 PM

Quote:

Originally Posted by UTAMAV

Curious what that would do with the Motordyne Plenum? Would it foul up your A/F ratio?

I'm sure it would alter them some... you really want to tune the car every time you change something. I kinda regret not getting the Uprev as the first thing I did.

G37sHKS · 10-25-2011, 04:26 PM

OEM throttle body is good enough

TypeOne · 10-25-2011, 04:37 PM

Quote:

Originally Posted by G37sHKS

OEM throttle body is good enough

Good enough for what? a million hp?

Sure there has to be SOME limitations to the stock stuff. I bet you would see gains if they were bored, bored intake manifold and a ECU tune.

Side note, does anyone know what the stock size is?

Methodical4u · 10-25-2011, 06:47 PM

I would be interested to see if annual gains came from it. I would think if it were to make power that a company would have already done so... then again I'm not qualified to know this. Might make no power and might make more than one would think.

SPOHN · 10-25-2011, 06:57 PM

From what I've seen over time there can be some very small gains in HP. But it is defiantly a art to doing it. Not worth the cost though. And if someone messed one up, your going to pay big to get another.

Jordo! · 10-25-2011, 08:01 PM

On cars with regular throttle plates, it usually just runs like crap on idle (unless you match the bored throttle with a new throttle plate) and you gain like 3 whp..

However, since throttling is mostly handled by VVEL, it might work well...

Not sure what would happen with dashpot calculations on decel -- I think that's one of the few times the throttle plate actually does anything, and the extra volume could have it running too lean and stalling.

Nobody's attempted this yet?

shaun66 · 10-25-2011, 10:35 PM

Looks like Impul has a throttle body kit.

370ZTUNE.com

Armonster · 10-27-2011, 06:08 PM

Quote:

Originally Posted by shaun66

Looks like Impul has a throttle body kit.

370ZTUNE.com

I'll try these as soon as I buy their $14k brake kit, $7k exhaust, and $3k strut tower bar.

Methodical4u · 10-27-2011, 06:53 PM

Quote:

Originally Posted by Armonster

I'll try these as soon as I buy their $14k brake kit, $7k exhaust, and $3k strut tower bar.

lol yeah, 3 grand? ummm... is this worth like 50 or so whp?

red6spd · 10-27-2011, 07:23 PM

I want the ISF style exhaust. SICK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!

( Click to show/hide )

SPOHN · 10-25-2011, 10:58 PM

Those are cheap.

TypeOne · 10-26-2011, 10:11 AM

Quote:

Originally Posted by SPOHN

Those are cheap.

When you talk about all motor power, the gains may be minimal, but hook them up on a boosted engine and the gains may actually be worth it.

There is for sure an art in boring them, and I think combined with the UpRev, you'd be able to tune out any changes in AFRs that it occurs. For a few hundred bucks, it might be worth it.

I wonder if motordyne is able to over bore their manifold... hmmm...

shaun66 · 10-25-2011, 11:12 PM

Totally worth it though

10-25-2011, 04:12 PM	#1 (permalink)
TypeOne A True Z Fanatic Join Date: Jul 2010 Location: Baton Rouge, LA Posts: 2,682 Drives: BSM 370 Rep Power: 1851	Larger Throttle bodies...? Anyone ever thought about using larger throttle bodies? I sent an email over to MaxBore to see if they would be willing to look at boring out a 370Z TB. Obviously enlarging the intake manifold inlets is a must, but from my experience with all motor cars, this can really free up some hidden power. http://www.maxbore.com/ Thoughts, ideas or opinions?

10-25-2011, 04:20 PM	#2 (permalink)
UTAMAV Base Member Join Date: Jun 2011 Location: Arlington, TX Posts: 104 Drives: 14 Nissan 370Z GM A7 Rep Power: 15	Curious what that would do with the Motordyne Plenum? Would it foul up your A/F ratio? __________________ \| Agency Power Ti CBE \| Stillen G3 CAI \| Z1 Motorsport Wheel Spacers \| Bridgestone Pole Position Tires \|

10-25-2011, 06:57 PM	#7 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 46 Posts: 14,844 Drives: Waiting on next Z Rep Power: 222	From what I've seen over time there can be some very small gains in HP. But it is defiantly a art to doing it. Not worth the cost though. And if someone messed one up, your going to pay big to get another. __________________

10-25-2011, 08:01 PM	#8 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 419	On cars with regular throttle plates, it usually just runs like crap on idle (unless you match the bored throttle with a new throttle plate) and you gain like 3 whp.. However, since throttling is mostly handled by VVEL, it might work well... Not sure what would happen with dashpot calculations on decel -- I think that's one of the few times the throttle plate actually does anything, and the extra volume could have it running too lean and stalling. Nobody's attempted this yet? __________________ Enjoy it. Destroy it.

10-27-2011, 07:23 PM	#12 (permalink)
red6spd A True Z Fanatic Join Date: Apr 2010 Location: Long Island NY Posts: 3,277 Drives: 2010 Z Coupe M6 SPT Rep Power: 22	I want the ISF style exhaust. SICK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!! ( Click to show/hide ) I'm kidding. I almost puked __________________ 2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness. ???Whp ???WTQ (Will find out come spring time)

10-25-2011, 04:26 PM	#4 (permalink)
G37sHKS A True Z Fanatic Join Date: Feb 2010 Location: Dubai Posts: 1,183 Drives: 09 G37S Coupe 7AT Rep Power: 21	OEM throttle body is good enough

10-25-2011, 06:47 PM	#6 (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	I would be interested to see if annual gains came from it. I would think if it were to make power that a company would have already done so... then again I'm not qualified to know this. Might make no power and might make more than one would think.

10-25-2011, 10:35 PM	#9 (permalink)
shaun66 Track Member Join Date: Mar 2010 Location: n Posts: 837 Drives: MB 370z 7AT Rep Power: 17	Looks like Impul has a throttle body kit. 370ZTUNE.com

10-25-2011, 10:58 PM	#13 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 46 Posts: 14,844 Drives: Waiting on next Z Rep Power: 222	Those are cheap. __________________

10-25-2011, 11:12 PM	#15 (permalink)
shaun66 Track Member Join Date: Mar 2010 Location: n Posts: 837 Drives: MB 370z 7AT Rep Power: 17	Totally worth it though

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