i got a Motodyne Plenium Spacer 5/16 iso Thermal for my RevUp Z
which include ; coolant control valve (CCV)

to get it clear
lets assume i am in place that has 12 month of summer wheather(assumption)
rare to get below 75 F

what is the reason for installing CCV and keep it close !!!
as it says in the manual (close over 55 F Open below 55 F ))

what i will loose exactly if i don't install CCV ??
and what is the benifit on installing it and keep it close ??

Note that i am not so keen of headage for 1 or 2 HP differntial but more may be i will

 

I was always confused by that. I thought it would be the other way around. Wouldnt you want it open over 55 F to keep the throttlebody cool in return keep the air cooler? and keep it closed below 55 F? That would have been my thinking. I thought we want cooler air going into the engine.

 

that thing is useless, i wouldnt chop up your hosing for it. Especially if your in Florida or some other hot state.

 

You want to close it above 55f to prevent coolant from running through the throttle body. Coolant is around 190 degrees or higher, as such it will heat up the incoming air charge. You open the valve below 55 degrees to prevent the butterfly valve in the throttle body from freezing condensation from the air charge on it and making it stick, resulting in a poor idle or decreased performance. The gain may be minimal, however heat is an engine's worst enemy (next to dirt), so I would install it... opinions can rightly vary on the benefit.

 

Closed keeps it cooler than when its open. Simple. Not much gains but I'd install it anyway.

 

Florida is the place where I would most certainly install it...

 

do you have to drain the coolant to intall this valve

 

+1

Well said.

This is exactly how, how much and why.

 

No. Not at all.

In fact, I recommend against draining the coolant.

Skunk may recommend it on their spacer but I certaintly won't. There is no reason to drain it. Their may be some reason to do it on a Honda engine, but not the VQ.

 

+2

 

Well Tony, since I've collected all this useful info on the spacer, I might as well own one. Can I pick it up on your site, and are there any deals currently? Shoot me a PM when you get a chance, this purchase is long overdue.

Thanks!

 

just wanting to make sure, but in stock form coolant flows through the throttle body all the time even when not needed right? Thanks

 

Yes.

 

Im going to take my chances and not install the CCV...

So far I really don't see a reason to install it. It doesnt get too excesively hot in L.A, and as of now, I have a leased vehicle (although I pla on buying it out).

.

 

The ambient temp will have a limited effect on the added performance of the CCV. The goal of the CCV is to limit the exposure of the incoming air charge to heat via coolant running through the throttle body. The CCV will stop coolant from running through the TB. If you're ambient temp is let's say 90 F, than the 190+ that the coolant is running at through the throttle body will increase the temp of the air charge. As you can see, no matter how hot your climate is, the coolant in the TB will still heat up the incoming charge. So your weather, (excluding sub-freezing) will have little effect on the usefulness of the CCV (i.e. the CCV is useful at any temp above 55+ when closed)...