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Bigger throttle body=more horses? 

 

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 Post subject: Bigger throttle body=more horses?
Posted: Wed Nov 07, 2012 11:47 pm 
Parts Gopher
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Age: 26

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Ride: 1992 falcon eb xr6

Location: daylesford
VIC, Australia

Would a bigger throttle body equal more horsepower what are people's opinions on this and would u find bigger ones?

 

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1992 falcon eb manual xr6 minor head work j3 chip tuned to a el xr6 manual ecu pushing 130rwkw

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 Post subject: Re: Bigger throttle body=more horses?
Posted: Thu Nov 08, 2012 12:00 am 
Getting Side Ways
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Ride: "08 XR6T Ute

Location: Northside - Brisbane
QLD, Australia

Bigger throttle body = less restriction on air flow. Will only work up to a point and assuming that the rest of your intake allows for the extra flow (eg snorkel, filter, piping, manifold, etc). But yes, more horses... Just prob not as much as you would like. I would suggest working on other bottle necks first... Then come to tb. Unless your getting it dirt cheap... Then go for gold.

Oh and from what I've read, it tends to be that people notice a sharper throttle response as the biggest change... Not amazing power gains.

 

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 Post subject: Re: Bigger throttle body=more horses?
Posted: Thu Nov 08, 2012 1:45 am 
Getting Side Ways
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Ride: 66 Coupe

Location: Perth
WA, Australia

[quote=Falcon eb t5 with EL motor cam extractors 2 1/2 inch zorst on gas][/quote]
if its for this vehicle it wont make any difference, the gas mixer is your biggest issue, unless your running SVI
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 Post subject: Re: Bigger throttle body=more horses?
Posted: Thu Nov 08, 2012 7:32 am 
Getting Side Ways
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Ride: EF XR6 Wagon, AU2 XR6 VCT

Power: 148 rwkw

Location: Auckland
New Zealand

+1 on the rest of the intake system. You will gain more by reducing the restriction in the rest of your induction path: an EL GT or SS Inductions snorkel, bell-mouthed 3" PVC pipe for the airbox exit, BA or 3" mandrel-bent induction tube, and decent performance panel filter.

On a moderately modified SOHC six, the stock throttle body is good for at least 5000 rpm. I have seen back-to-back dyno graphs on an E-series six with a stock throttle body and a larger one. The two graphs are basically identical to 5000 rpm. While the stock kws starts to flatten off, the larger throttle body keeps going well past 5500 rpm. The dyno shows a noticeably higher peak power, but no increase in peak torque. So, if you are going to spending a lot of time above 5000 rpm, the upgrade would be worth it. It would probably gain you a couple tenths in the quarter mile. But it's overkill on a daily driver. The larger bore would tend to reduce throttle response. If you are running a fully-ported head, big valves, a wild cam, 3-inch exhaust and an increased rev limit, you would notice an improvement.

 

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 Post subject: Re: Bigger throttle body=more horses?
Posted: Thu Nov 08, 2012 8:52 am 
Getting Side Ways
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Age: 49

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Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
QLD, Australia

I'm still using a log manifold and the original untouched TB, and I don't rev it past 5,000rpm anyway.....the ol' ED does alright for what it is.

 

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 Post subject: Re: Bigger throttle body=more horses?
Posted: Thu Nov 08, 2012 9:02 am 
Parts Gopher
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Age: 26

Posts: 63

Joined: 11th Mar 2012

Ride: 1992 falcon eb xr6

Location: daylesford
VIC, Australia

Thanks all for your input saved me time and money thanks

 

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 Post subject: Re: Bigger throttle body=more horses?
Posted: Thu Nov 08, 2012 2:00 pm 
Getting Side Ways
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Not a problem, that's what we are all here for... No such thing as a dumb question, just an empty bank account with nothing to show for it lol

 

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