How important is an aluminum air seperator tank?
#3
Yes it is. The stock one can crack and leak and then there goes 4k for a new motor!!! You could also just go with the ast removal, but I think Mazda designers put it there for a reason.
#5
Eats, Sleeps, Dreams Rotary
iTrader: (4)
Join Date: Apr 2003
Location: Denver, NC
Posts: 3,531
Likes: 0
Received 0 Likes
on
0 Posts
if you want to keep the AST then get it. But i recommend ditching it. I have been doing that on every FD i get thru the shop and had it on mine that way for 3 years. NEVER a cooling issue!! NEVER Not a single degree hotter. So everyone that is going to come on here saying that the mazda engineers are the smartest people around please stay home They lacked alot of real world skill. These masters of engineering couldn't even figure out the Plastic and horribly hot temps under the hood are a bad combo. Yeah they are the bast around.
#6
rx7 enthusiast
Thread Starter
Join Date: Oct 2004
Location: cincinnati
Posts: 313
Likes: 0
Received 0 Likes
on
0 Posts
well im kind of new to rx7s so bear with me, but where is the ast located? Is it an easy install?
Also, how hard is it to bypass and what would be required to do so?
Also, how hard is it to bypass and what would be required to do so?
Last edited by steve0178; 02-20-05 at 10:49 AM.
#7
Eats, Sleeps, Dreams Rotary
iTrader: (4)
Join Date: Apr 2003
Location: Denver, NC
Posts: 3,531
Likes: 0
Received 0 Likes
on
0 Posts
it mounts to the side of the factory intercooler. It is a odd shaped container with a radiator cap on it. It shouold be some sort of faded black color 3 hoses are attached to it. If you keep it and replace it you will need to drain a little coolant out of the system. Then take off the hoses from the old AST then put them on the new AST. Then refill the coolant sysytem. Pretty straight forward stuff.
Eliminating it requires the use of a 86-88 rx7 radiator cap assembly.( it has a overflow nipple on it) And some hose plugs to cover up the nipples that are stock AST hoses.I can email you some photos of it eliminated if desired PM me your address.
Eliminating it requires the use of a 86-88 rx7 radiator cap assembly.( it has a overflow nipple on it) And some hose plugs to cover up the nipples that are stock AST hoses.I can email you some photos of it eliminated if desired PM me your address.
Last edited by BigIslandSevens; 02-20-05 at 10:51 AM.
Trending Topics
#8
rx7 enthusiast
Thread Starter
Join Date: Oct 2004
Location: cincinnati
Posts: 313
Likes: 0
Received 0 Likes
on
0 Posts
ok i took a look at it and it seems that in order to bypass it i would just connect the longer tube going into the top of the ast to the radiator right? Then what would i do with the tube going to the air pump? I am planning on removing the pump very soon anyways. So what would i do with the tube from the ast to the pump when it is removed?
#9
Eats, Sleeps, Dreams Rotary
iTrader: (4)
Join Date: Apr 2003
Location: Denver, NC
Posts: 3,531
Likes: 0
Received 0 Likes
on
0 Posts
there is NO hose going to the air pump from the AST.
There are 3 hoses from the AST.
1.) One off the bottom to the radiator. Plug that at the radiator.
2.) One from the sidde of the AST to the filler neck of the water pump. Cap that at the filler neck nipple ( hoses with bolts in the end works for plugs clamped on both ends of course)
3.) Next the hose from the top of the AST goes to the overflow tank in front of the passenger side tire. THAT hose NOW will go to the overflow nipple on the 86-88 cap assembly. That just bolts in place of the stock filler cap assembly
Like i said above. PM me your email and i will send some pics. The air pump plays NO role in the AST system. Totally different
There are 3 hoses from the AST.
1.) One off the bottom to the radiator. Plug that at the radiator.
2.) One from the sidde of the AST to the filler neck of the water pump. Cap that at the filler neck nipple ( hoses with bolts in the end works for plugs clamped on both ends of course)
3.) Next the hose from the top of the AST goes to the overflow tank in front of the passenger side tire. THAT hose NOW will go to the overflow nipple on the 86-88 cap assembly. That just bolts in place of the stock filler cap assembly
Like i said above. PM me your email and i will send some pics. The air pump plays NO role in the AST system. Totally different
Last edited by BigIslandSevens; 02-20-05 at 11:03 AM.
#11
Eats, Sleeps, Dreams Rotary
iTrader: (4)
Join Date: Apr 2003
Location: Denver, NC
Posts: 3,531
Likes: 0
Received 0 Likes
on
0 Posts
you just put a hose with a bolt or other suitable plug onto the nipple that is coming out of the thermostat housing/filler neck area. It is pointing straight at you looking from in front of the car.
you want to avoid "looping" any of the lines because you will create a hot spot of coolant that does not get circulated as well as it needs to.
you want to avoid "looping" any of the lines because you will create a hot spot of coolant that does not get circulated as well as it needs to.
#15
Rotary Enthusiast
Join Date: Jun 2004
Location: Gallatin, TN
Posts: 1,457
Likes: 0
Received 0 Likes
on
0 Posts
Ok so if the AST is supposed to get rid of the air bubbles in the system, wouldn't it be best to have it if you do alot of work to your car and flush your coolant regularly? If you didn't get all the air out, then the AST would take care of it correct? If so, I think for the avg. person that doesn't do their own work, would be better off keeping it. You never know if the shop you took it to got all the air out of the system. Now if you do your own work, then I wouldn't see having one being that much of a benefit, since you'd know if you didn't get all the air out. Well atleast i'd hope so.
-Alex
-Alex
Thread
Thread Starter
Forum
Replies
Last Post
[For Sale] Scratch & Dent, Used, and Open-Box Sale!
SakeBomb Garage
Vendor Classifieds
5
08-09-18 05:54 PM