You guys with Singles.
You guys using Aluminum AST's??
or you guys just ELIMINATE it???

any recommendations?? to or for ast with a single set up?

 

Mine has been eliminated. Some keep it, but it's up to you.

 

Why should it matter ?? The AST is neccisary for the water pump cativating, and the turbo cooling... unless you plan on eliminating the turbo...
and even then it comes down to personal preference...

There are a lot of theories as to why you should or shouldn't elliminate the AST... there is no proof that eliminating it will blow your motor...

 

????????????????????? Really , I eliminated mine and my water temp dropped by 5 deg. !!

 

Mine's eliminated, but I noticed not change in water temps.

Beast

 

Where did water temps come into this conversation !?

I said it runs through the turbo... I said nothing of temps..

AST is for eliminating air caused by propeller speed of air pump or turbo parts that pump water through. To the point where it exceeds the speed that water can be moved, the result is air or cativation, that leaves bubbles in the coolant, which if let gather in the coolant passages, can form an air bubble, and cause hot spots. The ast lets the coolant relive itself from those bubbles, before being re-compressed and forced through the engine...

This is as I understand it. If you want to know more about cativation, look it up in reference to submarines..

 

Sean you dont need the AST, If you wanna buy that alluminum one that you mentioned to me you can. You just don't "need" to. I don't have one and I never noticed any change in temps. Only time would tell if I am creating hot spots but chances that will not be an issue.

 

Thanks guys..

I know there is a big debate about t he AST's and etc
with the TWINS set up. BUT wasn't really sure
with a SINGLE. Just wondering what the experienced
SINGLE guys are using or recommends.

I think maybe Roadracers probably would know more.
because they WOT for a LONG TIME and etc. Unlike
drag racers that WOT 10-13 secs at a time.. = )
Wonder what the roadracers use the AST or not.

 

The only thing pumping water is the water pump. The turbos just have cooling jackets, like the engine block.
Well and true.

My gut feeling is that the FD engine is so thermally overloaded that you *do* get nucleatic boiling under load, so the AST is needed to separate any vapor from the coolant.