#1  
Old 02-19-2021, 12:18 PM
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Default Wet deck tiger head cooling

I searched around, but didn't find much about wet deck tiger heads... So forgive me if this information is already out there.

Bracket 511 IA2 with Tiger heads. Bought the heads used and they have been drilled for the center exhaust cooling mod. Where do I run these lines? (Standard timing cover and meizere pump)

My current E-head 525 I am running a water manifold. Each corner of the head dumps back to the top of the radiator.

Thanks in advance.
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Old 02-19-2021, 05:14 PM
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Plumb out of the cold side of the radiator, or water pump if possible, into a high pressure pump. From pump through a inline filter and into the fittings above the exhaust ports. The water then makes its way into the heads cooling passages.

If nobody chimes in with the pump model number, I will look at mine in the shop and post it later.

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Old 02-19-2021, 05:35 PM
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http://www.pas4performance.com/Ponti...ine-Parts.html

Talk to these guy's, they will tell you the best routing for the style of Pontiac heads your using. And they are a great source for the items you will need to make it happen.

Bob

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Old 02-19-2021, 09:09 PM
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The pump is:
Shurflo comsv012d

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Old 02-19-2021, 09:35 PM
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So you pump cold water into the heads at these ports? Or is it an extra outlet for hot water exit?

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Old 02-19-2021, 09:57 PM
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Cold water goes in there. Should be pressurized water also, thats what the pump hp400dave posted about

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Old 02-19-2021, 09:57 PM
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On my son's 535 w/ wet deck Tiger heads we just put a tee in the middle and routed them all to the water manifold. So rear water hole to tee fitting at center hole then that ran to the manifold. Front water holes got they're own line to the manifold. Seems to be working. Hard to see in the picture. Car is put away right now. Can't get better pics for you.
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1971 Trans Am Lucy Blue, 11.56 @ 115
1966 LeMans. 462, SD prepped Kaufman D ports. 11.90 @ 112
1976 Trans Am twin turbo 462, SD Edelbrock heads 8.50@159
2009 G8 GT
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Old 02-19-2021, 10:22 PM
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Quote:
Originally Posted by hp 400 dave View Post
The pump is:
Shurflo comsv012d
Thanks! Have any pics of your setup? (I'm a picture book guy)

Sounds like a need a remote pump going in the exhaust side then route the valley pan port to the hot side of the rad with the front+rear of the head.


Almost wondering if I could drill and tap the water pump and run a cold line to the exhaust side of each head.... I have to imagine someone has tried this at some point?

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Old 02-19-2021, 11:15 PM
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You can't use the regular water pump because it doesn't have enough pressure. The water would turn to steam before it could cool the head enough. The Shurflo pump is high pressure and therefore can put enough water there to make a difference.

I don't know how to post pictures, but it is simple on my car. The water pump is built into the bottom of the radiator. I have 2 lines feeding the front of the block and 1 line feeding the high pressure pump. Out of high pressure pump to a filter and then into the heads above the exhaust. Out of the 4 corners of the heads with #4's in the back and #10's in the front. They go into a 4 into 1 manifold and back to radiator.

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Old 02-20-2021, 03:26 AM
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Quote:
Originally Posted by hp 400 dave View Post
You can't use the regular water pump because it doesn't have enough pressure. The water would turn to steam before it could cool the head enough. The Shurflo pump is high pressure and therefore can put enough water there to make a difference.

I don't know how to post pictures, but it is simple on my car. The water pump is built into the bottom of the radiator. I have 2 lines feeding the front of the block and 1 line feeding the high pressure pump. Out of high pressure pump to a filter and then into the heads above the exhaust. Out of the 4 corners of the heads with #4's in the back and #10's in the front. They go into a 4 into 1 manifold and back to radiator.
That’s pretty much the way to do it.

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Old 02-20-2021, 08:34 AM
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Quote:
Originally Posted by hp 400 dave View Post
You can't use the regular water pump because it doesn't have enough pressure. The water would turn to steam before it could cool the head enough. The Shurflo pump is high pressure and therefore can put enough water there to make a difference.

I don't know how to post pictures, but it is simple on my car. The water pump is built into the bottom of the radiator. I have 2 lines feeding the front of the block and 1 line feeding the high pressure pump. Out of high pressure pump to a filter and then into the heads above the exhaust. Out of the 4 corners of the heads with #4's in the back and #10's in the front. They go into a 4 into 1 manifold and back to radiator.
And this works with a wet deck?

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1964 GTO
501, Edelbrock Heads NA, 3460 lbs.
9.76 @ 137mph
1971 Trans Am Lucy Blue, 11.56 @ 115
1966 LeMans. 462, SD prepped Kaufman D ports. 11.90 @ 112
1976 Trans Am twin turbo 462, SD Edelbrock heads 8.50@159
2009 G8 GT
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Old 02-20-2021, 09:35 AM
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It is also a good idea to have a water pressure gauge on the system. You would be surprised at how much rust the filter picks up. I recommend cleaning your water filters after each race. I actually log water pressure on my racepak.

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Old 02-20-2021, 09:43 AM
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John, what are you using for a filter? You have it on the output of the high pressure pump?

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Old 02-20-2021, 10:52 AM
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I put a big filter in front of the pump and a small one after it. The big one is an inline #12 that is about 8" long. I assumed there would be rust from the block. The pressure sensor is a great idea. Where are you checking it?

I haven't been able to race because I was sick with Lyme disease for 2.5 years. It made me dizzy with flu like symptoms. I'm better now, but I have 900 remodeling and new construction projects around the house. My business is very busy and I'm getting married, so no racing until I get all that done.

It all worked good on the Dyno though!

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Old 02-20-2021, 11:14 AM
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Quote:
Originally Posted by slowbird View Post
John, what are you using for a filter? You have it on the output of the high pressure pump?
Earls PN: 230306erl
Two of them. One on each outlet of the secondary water pump. Check the filters every other time out. Lots of crud gets caught in them.


Last edited by Scott Rex; 02-20-2021 at 11:20 AM.
  #16  
Old 02-20-2021, 11:48 AM
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Thanks for the help everyone. Keep the info coming!

I usually run these AC delco tablets in my cooling system...

https://www.amazon.com/Genuine-GM-12...59644470&psc=1

I take it I shouldn't run these anymore? Assuming the risk is that this little passage between the two exhaust valves gets closed up... ?

  #17  
Old 02-20-2021, 06:29 PM
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Quote:
Originally Posted by John Langer View Post
It is also a good idea to have a water pressure gauge on the system. You would be surprised at how much rust the filter picks up. I recommend cleaning your water filters after each race. I actually log water pressure on my racepak.
Do you run a wet, or a dry deck setup?

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Old 02-21-2021, 12:50 PM
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Quote:
Originally Posted by opeliac View Post
Do you run a wet, or a dry deck setup?
Wet

  #19  
Old 02-21-2021, 10:14 PM
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Quote:
Originally Posted by John Langer View Post
Wet
Thanks...Another question...Is the Langer Split Rail Pan readily available? Or is is a custom piece?

  #20  
Old 02-21-2021, 10:35 PM
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Quote:
Originally Posted by opeliac View Post
Thanks...Another question...Is the Langer Split Rail Pan readily available? Or is is a custom piece?
Custom since it comes in a few different configurations. Usually it takes only a few weeks from time of order to completion.

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