496HO 1/2" Oil System Plumbing Upgrade to 5/8"
11-12-2008, 06:42 PM
#11
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I guess you are assuming that my engine is stock. It is not, except for the oil cooler and plumbing. It is now a bored and stroked 521ci with all forged internals, GM HP3 race engine heads ported by Jim Valako with increased diameter intake and exhaust valves, Raylar intake, Gen II HP3 race cam, high volume oil , Dana Torque Flow Vortex exhaust with #5 risers and spins 5800 rpm. Oil pressure heads south fast at any WOT runs of more than a few minutes. I need a much bigger oil cooler than the stock unit and the experts say I need a minimum of 5/8" oil line plumbing. That is the reason for my inquiry.
Thanks for the information on Henry's Engineering.
Thanks for the information on Henry's Engineering.
11-12-2008, 07:06 PM
#12
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Thanks Hot Stepper. I am already running a high volume oil pump. If the 496 block internal oil passageways are 1/2" I guess I am screwed. Does anyone know for sure?
11-12-2008, 09:45 PM
#13
I assume you mean the adapter for use of a remote oil filter mount? GM ZZ502 block is the same as the Merc 502/415 block. So yes, block adapter was/is changed to accomodate -12s.
11-12-2008, 09:53 PM
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I am running a very heavy deep v so at wot before I changed to -12, my oil temp was 40* higher. 4-my application, it was well worth the change over.
check out below site-good info
http://forums.boatfreaks.org/showthread.php?t=11055
check out below site-good info
http://forums.boatfreaks.org/showthread.php?t=11055
Bill
11-12-2008, 09:55 PM
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Gotta love stevesxms' subtle way of putting things LOL. But, I think he makes a good point. If your engine is stock I don't think you need the upgrade, unless maybe you run the bajeebers out of it. I'd say put an oil temp gauge on the engine and monitor oil temps. If your lines and or cooler are inadequate, the gauge will let you know.
I turned my 502 (ZZ502/502) into a 557 and replaced the stock Merc lines with all -12. More HP = more heat, and the change was necessary. But as stevesxm said so elequently
you're probably spending $$ you don't need to spend......... JMHO
I'll see if I can stick a pic of the -12s here
I turned my 502 (ZZ502/502) into a 557 and replaced the stock Merc lines with all -12. More HP = more heat, and the change was necessary. But as stevesxm said so elequently
you're probably spending $$ you don't need to spend......... JMHOI'll see if I can stick a pic of the -12s here
11-12-2008, 10:08 PM
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Kidnova, that is correct. It is the remote oil filter adapter that mounts on the block (where the oil filter usually resides in an automotive application) and to which the remote oil filter hoses hook up to that I am interested in. In my case for a 496 (not a 502/454) block. I also have no idea if the 502/454 oil filter adapter will work on a 496 block which is unique in many respects. Where does one get oil filter adapters with different size hose connection capability for a 496?
11-13-2008, 04:57 AM
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I guess you are assuming that my engine is stock. It is not, except for the oil cooler and plumbing. It is now a bored and stroked 521ci with all forged internals, GM HP3 race engine heads ported by Jim Valako with increased diameter intake and exhaust valves, Raylar intake, Gen II HP3 race cam, high volume oil , Dana Torque Flow Vortex exhaust with #5 risers and spins 5800 rpm. Oil pressure heads south fast at any WOT runs of more than a few minutes. I need a much bigger oil cooler than the stock unit and the experts say I need a minimum of 5/8" oil line plumbing. That is the reason for my inquiry.
Thanks for the information on Henry's Engineering.
Thanks for the information on Henry's Engineering.
but of course you knew that.
or should have.
11-13-2008, 07:52 AM
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there is nothing in your list of components that suggests your motor is unique. all thats required is a correctly sized oil cooler for the thermal load. a -10 line has a flow rate at 60 psi of roughly double what a typical hi volume pump will /can produce at 5800. your line size at 1/2 " is not restrictive and is not contributing to your issue in any way.
but of course you knew that.
or should have.
but of course you knew that.
or should have.
Thanks in advance.
11-13-2008, 09:16 AM
#19
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When I redid my engines, I went to -10 lines and fittings. For those that don't know, -8 lines are 1/2 id, -10 lines are 5/8 id. Most oil coolers and thermostats use 1/2 npt threads. If you use a 1/2 npt to -10 fitting, it has a much larger id than a 1/2 npt to -8 fitting. So common oil coolers and thermostats and adapters will work very well with -10 lines.
Stevexm' s advice flies in the face of what most engine builders say. Long hosees running between block adapter, oil cooler, oil filter and back to the block, through many fittings will create resistance to oil flow. For the small amount of money it costs, I would prefer to have the larger hoses.
Stevexm' s advice flies in the face of what most engine builders say. Long hosees running between block adapter, oil cooler, oil filter and back to the block, through many fittings will create resistance to oil flow. For the small amount of money it costs, I would prefer to have the larger hoses.
11-13-2008, 09:21 AM
#20
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