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Old 10-08-2007, 03:38 PM   #1
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Default TB Spacer

http://www.zzperformance.com/grand_p...=225&catid=113

Yes? No? Opinions? Does it work fine with a stock TB?
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Old 10-08-2007, 03:40 PM   #2
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In warmer climates, it should work well.
I wouldn't recommend it for a daily driver in the cold winter months.
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Old 10-08-2007, 03:53 PM   #3
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It'* of no performance benefit.

http://www.bonnevilleclub.com/forum/...ic.php?t=79871

Especially on a supercharged car, it makes no velocity difference whatsoever. As a potential point for injection, or for adapting a different type of TB, then yes.
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Old 10-08-2007, 04:03 PM   #4
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I read that post you linked and it sounds like an IC is the only way to lower temps effectively? Thats all I'm looking at doing with this, as well as minimize any KR due to heat.
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Old 10-08-2007, 07:44 PM   #5
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For those of you with Adobe reader...... done with a FLIR gun on a 99 GTP

http://www.zzperformance.com/downloa...acer_Study.pdf

Is it 1HP for every 10* drop in intake air temp? They drop the TB temps by 69*..... for $45

Unless ZZP is just trying to foll us unedgabacated folk......? IDK

Another question.... is the 3mm diff between the spacer hole size and a stock TB gonna make waves with the air?
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Old 10-08-2007, 08:03 PM   #6
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What percent of the surface area is the throtle body?
The blower internals have mch more area and are the dominant factor.
Now ask them to show you the difference in air temps at the blower outlet.
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Old 10-08-2007, 08:18 PM   #7
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I think the guy that did the FLIR test is on to something..... I suggest reading it, then again equations and numbers for the most part go over my head.... sounds and seems like it WOULD give some benifit for a cheap mod Also seems everyother fuelie modders(non-3800) use TB spacers. Kinda like a carb spacer....

Quote:
Originally Posted by Greyhare
Now ask them to show you the difference in air temps at the blower outlet.
If the temp drop prior to SC is a certain number wont that drop consistantly follow to after? SC cant make MORE heat than it does correct?
Supercharger says, "THeres a TB spacer on here now so Im gonna make more heat so the TB spacer has no effect".....?
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Old 10-08-2007, 08:47 PM   #8
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Quote:
* it 1HP for every 10* drop in intake air temp? They drop the TB temps by 69*..... for $45
It'* 1% hp gaiin for every 10* drop, so it could be very significant. ie. if you now have 100 hp, 1% will be worth 1 hp.

I have always used TB temp isolators on all my vehicles because I believe it makes a difference. I wouldn't though if I drove in sub zero temperatures due to the risk of icing the carb or TB.
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Old 10-09-2007, 12:05 PM   #9
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The old school use of thermal isolators is to prevent boiling the fuel in the carburetor. (Not applicable here.)
The old school use of spacers is to increase plenum volume for better fuel distribution, and throttle response.

On a port injected engine you may see some effect on throttle response but everything else is moot.

Will a 65deg lower throttle body temp lower air temp? Logically, yes. How much? I would be surprised if it were more than one degree.

Note that the "analysis" was after 10min cool down. I don't care what the temp is after cool down, what is it when running under load? Also notice the before spacer throttle body temp was amazingly close to 180deg; coolant flow to the throttle body with a 180deg T-stat.
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Old 10-09-2007, 03:33 PM   #10
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Paul, do you happen to have any data before and after on temps of the TB?
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