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throttle body spacers

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  #1 (permalink)  
Old 26 Oct 2011, 12:17 pm
mdskinner731's Avatar
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Default throttle body spacers

looking around online... bored @ work... lol and found throtle body spacers for the beloved PT... do they work?? what are the possible gains on having one?? what about upgrading the throtle body do a bigger diameter?? all for around 200 bucks i could upgrade. is it worth it??
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Old 26 Oct 2011, 12:41 pm
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Default Re: throttle body spacers

For what I heard, almost everybody said they don't work.
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Old 26 Oct 2011, 12:49 pm
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Default Re: throttle body spacers

I've heard they make great paper weights.
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Old 26 Oct 2011, 12:57 pm
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Default Re: throttle body spacers

Not an expert, but getting a bigger 'plenum' helps top end, and seems torque applications use small plenums.
That spacer effectively increases volume, but not substantially.

Check manifold to ensure it's actually larger than the OE TB!
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Old 26 Oct 2011, 02:54 pm
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Default Re: throttle body spacers

Doesn't do crap. Doesn't do anything at all for fuel injected cars. Works on carburators and old school cars. It is truly a great paper weight for today's cars.
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Old 26 Oct 2011, 03:44 pm
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Default Re: throttle body spacers

Have you done the Airbox mod?
How to: Air filter box modification
That will do more for you than a spacer.
A lager TB may help - I am not sure - it does on a turbo.
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Old 26 Oct 2011, 07:34 pm
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Default Re: throttle body spacers

This topic has been talked about before many many many times. I should know, i started a topic like this. lol
TB spacers wont do ship for a 4banger. But in do time i will get one. i love the whistle it makes lol.
-Danny Wolfman G
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Old 27 Oct 2011, 12:20 am
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Default Re: throttle body spacers

I do think that a throtle body spacer may improve responce due to the fact of creating a large plenum....lets be honest the pt cruiser has practically no plunem....has very long runners though.

from my basic understadning of intake manifolds though. I've noticed that "torque" applications use long intake runners....which out pt cruiser defiently has and so do other vehilce like the ka24de power nissan 240sx vehicles.

while top end cars similar to the k20z3, k20a2 and k24a2 powered civic si, rsx type, and tsx (respectively)powered cars use short runners for better top end.

doing a visual comparison of similar engines deisgned for different applications though I would think that plenum size doesn't make much difference between toruq or high revving applications.

case in point would be the accord k24a3/4 motor having long runners and the k24a2 powered tsx having short runners.....but the plenums look very simlar in size.
the big difference I see with all motors mentioned compared to the pt cruiser is they actually appear to have an intake plenum.

this is just my opinion based on visual actual science went into these conclusions.

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Old 27 Oct 2011, 06:03 am
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Default Re: throttle body spacers

Here's 3 pages on the junk, I mean TB Spacer.

Throttle Body Spacers. Need some input

....and a couple more:

Throttle Body Spacer

...and more.

Throttle Body Spacer?

Last edited by CREWZIN; 27 Oct 2011 at 06:05 am.
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Old 08 Nov 2011, 02:02 pm
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Default Re: throttle body spacers

OK this is where you get into tuning your engine for what RPM Range you want to see power.
Longer runners = more power at lower RPMS
Short runners = more power at higher RPMS
This is also true with the Intake Piping before the throttle body.
If you can find a biger throttle body that will fit the intake then go for it if it is reasonably priced, More air that comes into the engine the more efficeint fuel will burn and more HP is the side effect.
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