Phelonics,Throttle Body

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alcruz

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After working on my car last weekend I noticed even after an hour of the engine not running and engine cover being removed the intake manifold and TB are still very hot to the touch. Phelonic spacers dont do much for EFI engines cause they 're normally fairly well tune in terms of flow but I feel heat is definetely an issue.

My thought would be to source phelonic material (not very dificult) and make a 3/8's spacer for the throttle body and also remove the coolant line that runs under it. And to do the same with the intake manifold not where it meets the heads but where the the aluminum spacers meet the plastic portion of the intake manifold again with a 3/8's spacer.Source a couple more of the pouches ford uses under the manifold to keep it cool.

Now to address the additional cfm capability added by the spacers I intend to source a 2nd throttle body and send it to http://www.maxbore.com/. Here iI assume he will be able to extract at least 3mm and this should compensate for the additional intake volume.
Please let me know your thoughts and if you forsee any problems
 
Not gonna help any, spacers dont do anything and boring your TB the allowable 2-3mm is not worth the shipping costs your gonna pay to send it out and get it back.. True story..
 
Dont mess with the TB period.

Especially boring it out. Its coated and killing that coat will cause all sorts of funny issues.
 
Good catch this coating is on the throttle plate or butterfly and is to resist or repel dirt or sludge
There exist an old tsb probably 10yrs old that warns of cleaning coated tb's
Ford does not want you cleaning their tb's at all, but is common practice now that cleaner out there are made tb coating safe
Thats why I want to play safe and have a 2nd tb bored,in addition this wiil be performed in steps so as to catch any problem easily
 
The thought is not that the spacers themselves would add any power but the additional intake volume along with a larger tb(better breathing) and proper tune and cooling in combination would have a posiyive affect--I figure worst case I would be moving the torque curve to the left of the graph and this can be easily reversed
 
Googled the tb cleaning issue and it seams ford does have a tb cleaner that is safe - the ill affects seem to come from damage to the sensor particularly the iac and or egr- a good point was brought up, what about vehicles like the mustang that have aftermarket tb's, they dont have coating
Now some say its a silicone coating to ease manufacturing process who know and who cares
I'd be willing to bet that some of the stronger cleaners liquify this coating and it gunks up on the sensors mentioned
 
right - the biggest issue you face it hurting the torque curve. since you are not 'forcing' more air in, once you get past the restriction point, then all you do is slow down the velocity of the incoming air - which hurts the torque.

The LS is already tuned to lean-best-torque fueling -so it will get touchy around that point.

good to try. make sure to get a lot of data collected before to compare to.
 
what I question the most is volumetric efficiency tb 65mm and the intake opening being sooo large talk about slowing down the velocity-I almost certain tha once the flow gets past the tb into the elbow there is a loss due to the tumbling effect created by such a large opening, there is not even a smooth transition from the tb to the elbow
Somebody proposed the use of a bbk 80mm tb probably to a expedition if this can be mount with minimum distortin in the flow path, I think this engine would be begging for a higher rpms ---what I mean by smooth transition would be some how rerouting all the coolant lines ford didnt know where to put and having almost a straight shot to the intake--boy I wish I had an extra engine to mock up parts -- I'd be willing to bet that the combination I proposed with some http://www.extrudehone.com/auto/auto-performance.php to the heads and exhaust manifold would result in 35-45 hp well tuned without have to upgrade the fuel system
 
Get back to me on doing this after you figure out the prices on extrude honing, guarantee you dont want to go that route after they give you a quote. Runners for a small block chevy TPI manifold were $1600, plenum and lower intake were another $1800 IIRC. To each his own tho. Your pockets might be bigger than mine.
 
Isn't the V8 upper plenum plastic? Plastic doesn't hold much heat.
 
Checkmate no way I imagined that kind of pricing
Cant blame a guy for trying, not to sayt he hole concept is a waste
 
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