I'm currently mid engine rebuild, and while the engine is out, I'm looking for ways to keep the intake (specifically intake plenum) temperature down. There are many direct contact hot parts which serve as heat transfers, allowing the intake plenum to get really hot -- and I've blocked all of them off except for one (coolant through the throttle body). To make a long story short, I've purchased these two items from 3SX (among other things):
It makes sense that the second spacer would be necessary b/c coolant flows through the throttle body, but what if it didn't??? My question is:
Is it still necessary now that I have the plenum spacer for coolant to flow through my throttle body? My thought is that coolant might actually be heating up my throttle body instead of cooling it now that I have the spacer installed. Can I delete/remove the coolant tubes flowing to / from the throttle body? I just don't see why flowing coolant through there is necessary anymore now that the manifold should be much cooler.
Re: Coolant flow to throttle body - still necessary?
I don't know why the coolant is routed thru the throttle body. Only concept I can think of is in extreme cold so the engine gets to temp faster? I don't even know. Honestly I don't think it is necessary at all. And I don't believe in the slightest that it would actually hurt anything to leave it capped off and be free of hot coolant flowing thru it.
Re: Coolant flow to throttle body - still necessary?
I may be off a bit, but the coolant runs through to warm idle speed control motor. I have heard of people deleting the coolant to the TB, some have cold start problems, others don't. If you do, you can always plug them back in.
May find info here... Stealth 316 - ISC Servo Motro
The only thing that old bag is fighting is the angel of death as he moon walks into the bedroom carrying a pillow with two handles. -Jim Norton
I know a guy with a foxbody (none the less) that once said my TT stealth was and I quote "a big pussy 'cause its got a weedeater motor and can't do no burnout". -BondoB
Re: Coolant flow to throttle body - still necessary?
I have mine capped off. No problems. Anything to free up the engine bay lol.
__________________
1992 3000GT VR4 10:1 comp, Fidanza FW, RPS PP & Stock disc, Air Filter, Greddy type S BOV, gutted precats, AWS Delete, Vac Reduc, MBC-not set yet, Autometer BG.
Coming Soon: Maximal Single Shot(hopefully), MBC, Downpipe, FMIC.
1993 3000GT SL(PARTING OUT-PM FOR PARTS!!!)
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************************************ '93 Sl ECU rebuilt 100$ shipped
Re: Coolant flow to throttle body - still necessary?
Quote:
Originally Posted by linchpinjoe
Route the coolant flow INTO the throttle body. It will cool your pistons down.
uh...yeah, not helping there man.
I deleted mine. you can get a plate to cover it from slowboy racing, same as the DSM ones. Screws are a pain in the ass to get out and you will prob have to drill them out. Capping off the water neck is somewhat of a pain and I suggest welding it. If your in cold climate you may also find that it will have a little more prob idling till it gets really warm.
Re: Coolant flow to throttle body - still necessary?
Quote:
Originally Posted by UCSB VR4
It makes sense that the second spacer would be necessary b/c coolant flows through the throttle body, but what if it didn't??? My question is:
Is it still necessary now that I have the plenum spacer for coolant to flow through my throttle body? My thought is that coolant might actually be heating up my throttle body instead of cooling it now that I have the spacer installed. Can I delete/remove the coolant tubes flowing to / from the throttle body? I just don't see why flowing coolant through there is necessary anymore now that the manifold should be much cooler.
Well first of all, what the coolant flowing through the throttle body does is operate the FIAV (fast idle air valve). It allows a higher idle when coolant temps (and therefore engine temps) are cold. It's all pretty negligible compared with the efficiency of your intercoolers. If you really want to drop combustion temps, spray some meth.
In my opinion, deleting the FIAV on a street car is dumb (no offense Coop, lol). It serves a useful purpose and it's not like it's a huge eyesore.
Re: Coolant flow to throttle body - still necessary?
Quote:
Originally Posted by Intropy
In my opinion, deleting the FIAV on a street car is dumb (no offense Coop, lol). It serves a useful purpose and it's not like it's a huge eyesore.
no prob man ~500 miles in 2 yrs I wouldnt call mine a street car right now anyways lol. When I first got the car I would never take it out if it was below 50 and so thats prob why I never really had ill effects anyways.
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Coolant flow to throttle body - still necessary?
1992 3000GT VR4 10:1 comp, Fidanza FW, RPS PP & Stock disc, Air Filter, Greddy type S BOV, gutted precats, AWS Delete, Vac Reduc, MBC-not set yet, Autometer BG.
