Closed cooling systems for 750-950 hp, intercoolers, sear strainers etc
 

Who has reasonably priced exchangers efficient enough to run something like that?

How are you guys setting up intercoolers for procharged type blower systems, with its own exchanger system in a closed loop for cooler core, or seawater with seperators(sea strainers)? If anyone is doing closed loop intercooler systems, what about use a larger exchanger than you would on just motor to do both systems? I was thinking about longevity of intercooler cores in a Eaton type blower that you cant easily replace, how are the intercooler systems done on the CTSV supercharged LS engines used in boats?

Many intercoolers draw seawater off of a transom pickup completely separate of the engine cooling system. It keeps the air from getting too chilled at idle as well.

Air too chilled at idle? How is that even a thing? (Unless your talking about old carb stuff... we routinely run our engines with intake air temps in the 40 degree range with air/water intercoolers)

I didnt want to pump seawater through the intercooler bricks inside of the factory LSA blowers, they arent all that easy to replace

pro charger uses water from the sea pump,not from a seperate pickup.on an m4 or m3 they use a -8 line.i always thought that was not big enough.

It's better to use a sperate heat exchanger with a small electric circ pump. The coolant in the engine exchanger will be too hot to adequately cool the air. The exchanger for the intercooler doesn't have to be huge, I'll post a couple pics of the stainless ones we use for a reference.

This is what I have cooling 800hp Procharger motors
http://www.standard-xchange.com/tool...ntend/item.asp

I run coolant in the block and my intrecoiled runs off the seapump.

http://i1225.photobucket.com/albums/...psedeca94f.jpg

Ever get a chance to drum that up?

I see air/water Procharger cores. So your saying you pickup seawater and run it through the exchangers you linked to (which size ones if so and what pre/post inlet temps do you see) and then have water/coolant circulating from the exchangers to the procharger A/W cores?

Osco used to do custom heat exchangers. ,even dual core, for running your coolant to and from the intercooler.probably wouldnt fall into the budget category though.

Sorry, forgot about it. Here's the size for an LSA, 2/3 is the exchanger for the intercooler and the end is an oil cooler. With decent flow, this size keeps temps under control at 10lbs boost. [ATTACH=CONFIG]562506[/ATTACH][ATTACH=CONFIG]562507[/ATTACH]

What size coolers are those? How many plates?

I have the same coolers looks good.

Great stuff guys thanks for sharing! How are they mounted/held in place, any pics of the bracketing design?

What part number is that?

When you say decent flow, what pump are you using, and what is "under control" at 10 psi? Do you know what pressure the system sees? Intercooler pump effectiveness goes WAYYY down when they are run with more and more pressure head, the best testing Ive seen with a ZL1 intercooler core is with a $500 pump that flows more than a ZR1 does, or another for half the price that does about what the ZL1 Camaro pump does. Definitely be running more than 10, and Id like the IATs to be at ambient air temp or below since the octane on the water isnt what is always available at 93 pumps

Haxby?

But did you die? Haha

Here is my set-up and flaws with it. I built a 2 stage pump that sits in place on the LS motor where the factor AC was, driven off a single belt.

1st stage
Sucks water thru the Bravo drive>thru stage 1> to water to water heat exchanger> out to each manifold> thru riser blocks>thru water cooled turbos> out the back of the boat

2nd stage
Sucks water thru a transom pick up> thru 2nd stage of pump> thru water to water inercooler> tees off and goes to each exhaust after the turbos> then mixes and out the boat thru the exhaust

Few things I learnd along the way. I couldn't have a single pick-up for both stages as it wouldn't supply enough water, tried going to 1.5" hose and still wasn't enough at high rpm to keep motor cool.

If I ran the 1st stage after it leaves the turbo into the exhaust at high rpms for even just 20 seconds it would be boiling the water in the exhaust pipes.

Current issue I have is after about 10-12hrs of use my intercooler is getting plugged up with algae. and I have to back flush the system to clean it out. I think this is happen because more so the lake water is high in algae then the boat sits with some water left in the intercooler let oxygen get in and grow. Still thinking how I'm going go fix that. Its easy to see as my intake air temps start climbing when boost comes up where they usually will stay steady if not drop a few degrees.

Otherwise my water to water intercool I'm using for engine coolant seems to be doing just fine keeping up to the task and I believe its of a 496 Mercruiser and I'm somewhere in the 550-600hp range

Maybe swimming pool algicide? Takes a couple ounces to do 10000 gallons, so an eyedropper full put into system when it is gonna sit all week. Might be a thought.

Have any pictures of this setup?

What is the engine setup itself

I think I have talked with you before about it, if photobucket wasn't being so stupid I could upload photos of it.

But this is a twin turbo 5.3ls motor with a billet intake manifold that is stacked with a intercooler on top of it.

You can get a pretty good shot of it here

There is also a few video of it idling and running. That's a old video from almost 2yr ago, a lot has changed/approved upon since then.

Ok yeah, LS7 cam if I remember right, reversion issues?

That's me and it was a ls9 cam, have since switched it out to a custom grind and have no more reversion issues, Imagine that!! Seems to make way more power up top as I have had to run a bigger fuel pump and injectors along with changing my pitch size from a 21 3 blade to a 24 4 blade. Still thinking I could go higher but 70ish is plenty fast for me in a pontoon

LS7 LS9 both same cams practically. Thats what Im running on my setup but they will be advanced 7-9 degrees


Good deal, yeah reversion is bad all around. What specs you end up with on the cam?

I ran thru the number about advancing the ls9 cam and it was an option, but I realized we have an account with crane cams and they were able todo a custom grind pretty cheap for me so I went that route.

Is 216/220 560"/560" with a 116lsa

I'm dumping the water in right after the turbo' s(maybe 2") and if I shut it off and pull it apart there is a tiny bit of water pooling on the exhaust outlet of the turbos, nothing on the vanes or after them(going back to the valves) that was after a long 750rpm idle. I was happy about that.

This winter I'm remaking the intake to clean up the runners and make them smoother should flow better.