Practical limits to closed cooling?
09-25-2007, 08:17 AM
#1
Registered
Thread Starter
Practical limits to closed cooling?
Since I am having both motors redone (tired of unreliable POSs) I am thinking of going to closed cooling. Carbed BBC 502s will probably be 500-550hp 509ci when redone.
1) Can closed cooling handle the heat? (Florida salt water in the 80s)
2) Can I reuse my Gill exhausts?
3) Upgrading oil coolers as well to have thermostats and more cooling capacity - what size makes sense for this application (basically a big cruiser)?
Thanks
1) Can closed cooling handle the heat? (Florida salt water in the 80s)
2) Can I reuse my Gill exhausts?
3) Upgrading oil coolers as well to have thermostats and more cooling capacity - what size makes sense for this application (basically a big cruiser)?
Thanks
09-25-2007, 08:52 AM
#2
Charter Member
Charter Member
Join Date: Nov 2000
Location: Lake Charles, LA USA
Posts: 1,094
Likes: 0
Received 0 Likes
on
0 Posts
I called Sea Kamp and got two kits for my 600 hp motors with aluminum heads. They work fine with no tstats. Only put closed cooling on the motors, leave the exhausts on raw water.
Tom
Tom
09-25-2007, 09:42 AM
#3
Registered User
09-25-2007, 11:24 AM
#5
Registered User
Yeah, they had 3 of them in a 47 Apache a few years back.
Upside- no engine rot
Downside- you still have to flush the secondary side
-More junk to haul around- more weight
-More stuff to go wrong
-Expense
Upside- no engine rot
Downside- you still have to flush the secondary side
-More junk to haul around- more weight
-More stuff to go wrong
-Expense
09-25-2007, 01:18 PM
#6
Registered
I had two made out of American Industrial in Chicago. They make the Teague oil coolers.
They wanted to know how many BTU's I was trying to dissapate. I had no Idea and my Machinist/bottom end assembler was not able to give me the figure. In fact everyone I quizzed had no answer. I ended up going with huge units as they were bigger than any I was aware of. (5" diameter, 30" long) Top of the line double pass units.
They work well but I run in cold water. As Chris said, Expensive, more to rig, PITA but my engines love them.
They wanted to know how many BTU's I was trying to dissapate. I had no Idea and my Machinist/bottom end assembler was not able to give me the figure. In fact everyone I quizzed had no answer. I ended up going with huge units as they were bigger than any I was aware of. (5" diameter, 30" long) Top of the line double pass units.
They work well but I run in cold water. As Chris said, Expensive, more to rig, PITA but my engines love them.
Last edited by 2112; 09-25-2007 at 09:42 PM. Reason: Double pass, not single
09-25-2007, 02:27 PM
#7
Charter Member
Charter Member
Join Date: Nov 2000
Location: Lake Charles, LA USA
Posts: 1,094
Likes: 0
Received 0 Likes
on
0 Posts
I think my exchangers are 6"x30" 4 passes on the raw water side (inside the tubes). My motors run at 130-145 at any speed in 85-90 degree sewer water in LA and Texas.
Tom
Tom
09-25-2007, 04:37 PM
#9
Registered
Join Date: Nov 2001
Location: Pennsylvania
Posts: 3,385
Likes: 0
Received 0 Likes
on
0 Posts
Mine are like Thunderstrucks but are 3 passes. They work great on 475 or so hp 454s. Other advantages are, no water pressure issues, no sediment in block, you can pressure test the cooling system the normal way, aluminum heads and intakes can be used.... the list is quite long. I'm a big proponent of cc. For the tiny expense and with virgin blocks I'd go for it.
Platinum Member
