[SILVY968]

Most cars can be easliy modified for increased low - end torque by installing a spacer after the throttle body.

Is there one for the 3.0 L. 968 motors?

Has anyone tried one, home brew or commercial?

Results?

Seems like an easy device to make from aluminum and a C&C machine.

Are there any negative reasons why this should not be done to our engines?

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[RS Barn]

The throttle body has water outlets to keep at a constant temp. There are two O rings that seal TB to manifold. A spacer would actually need to have a carefully machined interior for hold everything in place. Could be done.

I'm not that sure it would help on this manifold with all the pressure changes etc.

Pete

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[SILVY968]

It might be a power adder that is easy to install and not to expensive.

Any chance of a prototype build and maybe a performance product. As it would be a bolt-on, may of us would go for it.

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[SILVY968]

[quote name='RS Barn' post='28034' date='Nov 17 2006, 09:17 AM']The throttle body has water outlets to keep at a constant temp. There are two O rings that seal TB to manifold. A spacer would actually need to have a carefully machined interior for hold everything in place. Could be done.

I'm not that sure it would help on this manifold with all the pressure changes etc.

Pete[/quote]





Pete,

If the TB has water running thru it, and the engine heats the water and the water heats the air, wouldn't that make the air less dense, and wouldn't keeping the TB cold instead of hot allow for more fuel and therfore more power? Could we keep the TB colder and get more fuel into the engine?

I'm confused.

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[Darth Vadar]

I seem to recall that Corvette has a perfomance "thermal bypass tube" to get the coolant away from the Throttle Body for just the above reason... Never tried it so can't say if it works or not... maybe hurts more than helps?? But an intersting suggestion...

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[saxman]

[quote name='SILVY968' post='28319' date='Nov 25 2006, 04:33 PM']Pete,

If the TB has water running thru it, and the engine heats the water and the water heats the air, wouldn't that make the air less dense, and wouldn't keeping the TB cold instead of hot allow for more fuel and therfore more power? Could we keep the TB colder and get more fuel into the engine?

I'm confused.[/quote]

this is a pretty common modification done in the honda scene(redirecting the coolant, not the throttle body spacer)... usually good for about a horsepower. A horsepower... just doesn't sound right in a singular form.

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[SILVY968]

Every little bit helps!

This need more investigation. It does not need a lift or a torch to do and it makes the engine run better. I'm interested!

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[Darth Vadar]

I will take this project on for further investigation.. Have to wrestle my car away from my Mechanic first tho... new belts and rollers and such.



If the "Thermal Bypass" looks simple to do, and easily reversible in case there are downsides, I will pursue it... 1 HP is a "Good Thing"!



B4 this one, I have to get under the Cam Cover and see what if anything needs done with the Cam Sprockets, Variocam unit et al...



Did someone on this Forum say they had a set of good Cams to sell? Or was that the folks at RS Barn? And how much for a set? Hope I don't need 'em, cause I sure would like one of those Techart Splitters that Gert sells, but can't have it all! Just ask the wife!

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[flash]

i've already done the thermal bypass - works well, but i am in a warm climate - i would not do this in an area where temps would drop below 50 F - iceing is not fun - been there

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[Tom in Austin]

How about a thermostatic control of some type to only admit the hot coolant when ambient requires it? Seems like a simple way to protect against icing while cooling the charge the rest of the time ...

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[flash]

sounds like a neat little project for you - hehehe

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