Coolant Crossover tube for high HP setup
Any thoughts on if the setup flowed too much. I was wondering if you don't want to keep the flow low so it only gets the gases(vapors) and small amount of coolant flows. That way the primary coolant flow is not altered?
Those small hardlines can't be more than .125 - 1/8 inside diameter, Since it handles has all 4 ports in the original design. I figured thats pretty low flow.
Ed
Those small hardlines can't be more than .125 - 1/8 inside diameter, Since it handles has all 4 ports in the original design. I figured thats pretty low flow.
Ed
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Would there be any problems in connecting the passenger side rear to the passenger side front and then go halfway across the front of the intake and stop. And then connect the drivers side rear to the drivers side front and then go halfway across the front to meet the other end that is coming from the passenger side and put a T there to run to the radiator? Kinda like two separate systems...one for the passenger side, and one for the drivers side that meet in the middle? I like the look of symmetry under the hood, which this would accomplish.
But it wouldn't account for any crossover from driver's to passenger side.......would that be an issue?
But it wouldn't account for any crossover from driver's to passenger side.......would that be an issue?
Last edited by 66 BADBOY; May 26, 2010 at 02:20 PM.
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So using this setup on a 2001 that has the LS6 intake already, wouldn't I now have to grind off the ribs on my LS6 intake to accomodate this crossover system? That's not a problem, I just want to make sure I'm understanding all of this.
Below is a post I made on this thread 3 years ago, all this hyperbole and speculation is ridiculous Read the post I made then, it's very clear as to how this issue can be resolved. Any further discussion is absurd.
11-14-2007, 11:16 PM #6
bigdsz
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We just put a HK Racing 408 in my Camaro and I was concerned about the rear steam vents because two of my friends recently wiped out #7 and I didn't want to take any unnecessary risks.
Anyway I used some of my old LS1 steamtubes and cut the tube so that there was about 1 1/2" sticking out from the flange that is bolted to the head. Then I used a SS tee and ran a 5/16" id line up to the front cross over and connceted it with a tee which I ran to the radiator.
It is absolutely amazing how much coolant those little hoses flow. I truly believe that these tubes also bleed off steam-air pockets that could cause hot spots. I sure have alot more peace of mind.
FWIW my last project on my 408 was installing an engine oil cooler. It was a bitch but necessary since my oil temp was getting up to 270-275. Now most of the time I stay below 200 unless I romp on it.
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'09 Corvette
'04 Corvette-Sold
'00 Z28-HK Racing 408, Callies Dragonslayer Crank & Rods, Wiseco Pistons, AS Stg 2 5.3L heads, Comp XER 244/248, FAST 90 intake, NW TB, Lingenfelter 100mm MAF, Racetronixs PNP, SVO 30#, March pulley, SPEC Stg 4+, McLeod bellhousing, Fast Toys lid, Jet Hot headers ORP, Hooker cat back, Pro 5.0, Denny's Nitrous DS, Norris LS1 Edit, Strange 9" center sec./Detroit soft locker/3.50 gears/Moser housing, Hoosier QTP's, UMI K member, A arms & reloc brac.
11-14-2007, 11:16 PM #6
bigdsz
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We just put a HK Racing 408 in my Camaro and I was concerned about the rear steam vents because two of my friends recently wiped out #7 and I didn't want to take any unnecessary risks.
Anyway I used some of my old LS1 steamtubes and cut the tube so that there was about 1 1/2" sticking out from the flange that is bolted to the head. Then I used a SS tee and ran a 5/16" id line up to the front cross over and connceted it with a tee which I ran to the radiator.
It is absolutely amazing how much coolant those little hoses flow. I truly believe that these tubes also bleed off steam-air pockets that could cause hot spots. I sure have alot more peace of mind.
FWIW my last project on my 408 was installing an engine oil cooler. It was a bitch but necessary since my oil temp was getting up to 270-275. Now most of the time I stay below 200 unless I romp on it.
__________________
'09 Corvette
'04 Corvette-Sold
'00 Z28-HK Racing 408, Callies Dragonslayer Crank & Rods, Wiseco Pistons, AS Stg 2 5.3L heads, Comp XER 244/248, FAST 90 intake, NW TB, Lingenfelter 100mm MAF, Racetronixs PNP, SVO 30#, March pulley, SPEC Stg 4+, McLeod bellhousing, Fast Toys lid, Jet Hot headers ORP, Hooker cat back, Pro 5.0, Denny's Nitrous DS, Norris LS1 Edit, Strange 9" center sec./Detroit soft locker/3.50 gears/Moser housing, Hoosier QTP's, UMI K member, A arms & reloc brac.
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HTH
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There's been a total of 10 part number changes over the years. Crazy.
Those custom plugs with the threaded holes from Wegner Automotive are a good way for guys to go that still want to run lines to the rear of the heads.
Last edited by All-In; May 21, 2010 at 01:35 PM. Reason: typo
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Kurt Urban sells a nice package that is cheaper than doing it with wegner automotive once you get the distribution blocks. It includes the 4 blocks, distribution block, hose and fittings if I remember correctly.
TomZ that is a nice set up. I like the black hoses. I used them on my fuel lines, with black fittings as well. I thought about doing the coolent lines as well, but with the wiring harness and N2O lines running to the plate it gets alittle crowded. I still like the 4 port GM system for an easy and clean install.
TomZ that is a nice set up. I like the black hoses. I used them on my fuel lines, with black fittings as well. I thought about doing the coolent lines as well, but with the wiring harness and N2O lines running to the plate it gets alittle crowded. I still like the 4 port GM system for an easy and clean install.
The highest point on the head is where the steam vents hook up. The bleed lines keep air pockets from forming causing the rear cylinders combustion chamber to be insulated from direct water flow. In drag race engines it is common to run water as the coolant (as the rules require), this can boil in the heads on heat soak after running and cause bubbles to collect in the rear cylinders. The lines clear this air by bleeding as the factory did on the original engines. The flow over the heads would be reduced by the area of a single -4 hose, this has not shown any problems in any engines I have dealt with.
Kurt
Kurt
