TB Spacer
10-08-2007, 02:38 PM
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TB Spacer
http://www.zzperformance.com/grand_p...=225&catid=113
Yes? No? Opinions? Does it work fine with a stock TB?
Yes? No? Opinions? Does it work fine with a stock TB?
10-08-2007, 02:53 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.
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.
10-08-2007, 03:03 PM
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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.
10-08-2007, 06:44 PM
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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?
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?
10-08-2007, 07:03 PM
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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.
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.
10-08-2007, 07:18 PM
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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....
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".....?
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....
Originally Posted by Greyhare
Now ask them to show you the difference in air temps at the blower outlet.
Supercharger says, "THeres a TB spacer on here now so Im gonna make more heat so the TB spacer has no effect".....?
10-08-2007, 07:47 PM
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* it 1HP for every 10* drop in intake air temp? They drop the TB temps by 69*..... for $45
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.
10-09-2007, 11:05 AM
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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. :?:
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. :?:
