|
Originally Posted by ICDEDPPL
(Post 3626200)
Not if its been covered but just throwing it out there...
http://www.offshoreonly.com/forums/g...-vi-502-a.html post #26 |
Originally Posted by Raylar
Rage: Thank you for re-confirming that. Your'e welcome.The Melling HD/HV is the only pump we use and sell so oil pump volume you should have should not be the problem from an oil pump issue. Good to hear Just to let you know we have a couple of customers running 750-800HP Whipple supercharged 496's that we built with thermostat oil cooler systems with coolers similar in size as yours and one is run at Havasu in over 110 degree temps for over three years now with lots of long distance and long duration blasts at 5000rpms and higher That is great. I can run all day at 5000rpm with no oil over temp issues as well. Different HP of course. It is the extra HP from the 5600-5800 rpm WOT that over heats the oil. with no oil overheating issues What is their crank case oil temp during extended WOT running?so I know its quite doable and possible when everything is right. I stll believe your issue may be plumbing, routing or compnent issues in your oil filter and cooler system and not bearing clearances. In that regard you were nice enough to send me two 25 psi oil bypass valves gratis to replace the stock 11 psi oil bypass valves at the block filter adapter back in 2008 when I bought a lot of parts from you and built the current motor. Is there any way that those were not the 25 psi units and were 11 psi units? JMO Best Regards, Ray @ Raylar Ray, You did not tell us what the crankcase oil temperature was for the two Whippled 496 engines that you built that run WOT on Havasu. What is their crank case oil temp during extended WOT running?
Originally Posted by Rage
(Post 3625963)
See above in red. Thanks.
|
Originally Posted by blue thunder
(Post 3625400)
It seems your priorities are all wrong sir. :whistle:
|
2 Attachment(s)
Originally Posted by SDFever
(Post 3625493)
Here's the flow. I wonder if your builder changed the flow in or from the block and did not realize he caused an endless loop??? Maybe?? It could happen. See picture.
My remote oil system routing remains identical to the stock Mercruiser 496HO remote oil system (example Mercruiser diagram and parts list attached). Attached is your drawing with my oil system overlaid on it. As you can see my oil flow at the filter adapter is different from your representation because the Item #19 "FITTING, OIL FILTER ADAPTER" part number 862958 blocks the oil flow path that your diagram portrays. When I get back and can take the pictures of my remote oil system that you have been requesting it will show this oil flow path. Similarly the sea water flow path through all the coolers is the same as the stock 496HO with one exception....the water flow direction through the oil cooler is against the oil flow direction. |
Originally Posted by Rage
(Post 3626900)
By the way I am the Builder.
My remote oil system routing remains identical to the stock Mercruiser 496HO remote oil system (example Mercruiser diagram and parts list attached). Attached is your drawing with my oil system overlaid on it. As you can see my oil flow at the filter adapter is different from your representation because the Item #19 "FITTING, OIL FILTER ADAPTER" part number 862958 blocks the oil flow path that your diagram portrays. When I get back and can take the pictures of my remote oil system that you have been requesting it will show this oil flow path. Similarly the sea water flow path through all the coolers is the same as the stock 496HO with one exception....the water flow direction through the oil cooler is against the oil flow direction. 19 and 16 are effectively the same thing. One is plugged and the other is not but they are the same passage. |
Originally Posted by SDFever
(Post 3627884)
Number 16 is where my oil leaves the block. Then yours and mine are the same. Not sure what you've done etc. Just showing you how it came stock with that adapter. Incorrect, your diagram shows the oil flow going immediately back into the engine via the center bypass valve in the block which is not the way it flows for your and my engine ie it flows out of the oil filter adapter to the oil cooler. I'm understanding you and you say 19 blocks the flow,,,, that is the mounting hardware Correct......that blocks the oil's ability to flow back into the engine as your diagram portrays. for the adapter plate (ADAPTER, OIL FILTER" part number 862870T). What you are saying does not sound right It is correctunless I've totally misunderstood you. 16 is supposed to be the exit. That is what I am saying and my drawing overlay on you diagram portrays If it's not, then you have either done something else fancy with your plumbing or you are returning a significant amount of oil back to block with little cooling or filtration.Not the case.
19 and 16 are effectively the same thing. One is plugged and the other is not but they are the same passage.Yes, together they combine to direct oil flow out of the engine to the oil cooler.....and not as your diagram shows the flow going immediately back into the engine (through the #19 fitting which has no hole in it to allow this) w/o being cooled by the oil cooler. That is what your drawing portrays which I am disagreeing with because it is an incorrect portrayal of oil flow for my engine. It seems we agree on the correct oil flow path verbally and therefore it seems that we collectively agree that your diagram describing the oil flow path is in error as a description of your and, as I am telling you, my oil flow path |
Originally Posted by Rage
(Post 3626619)
Originally Posted by Raylar
Rage: Thank you for re-confirming that. Your'e welcome.The Melling HD/HV is the only pump we use and sell so oil pump volume you should have should not be the problem from an oil pump issue. Good to hear Just to let you know we have a couple of customers running 750-800HP Whipple supercharged 496's that we built with thermostat oil cooler systems with coolers similar in size as yours and one is run at Havasu in over 110 degree temps for over three years now with lots of long distance and long duration blasts at 5000rpms and higher That is great. I can run all day at 5000rpm with no oil over temp issues as well. Different HP of course. It is the extra HP from the 5600-5800 rpm WOT that over heats the oil. with no oil overheating issues What is their crank case oil temp during extended WOT running?so I know its quite doable and possible when everything is right. I stll believe your issue may be plumbing, routing or compnent issues in your oil filter and cooler system and not bearing clearances. In that regard you were nice enough to send me two 25 psi oil bypass valves gratis to replace the stock 11 psi oil bypass valves at the block filter adapter back in 2008 when I bought a lot of parts from you and built the current motor. Is there any way that those were not the 25 psi units and were 11 psi units? JMO Best Regards, Ray @ Raylar Ray, You did not tell us what the crankcase oil temperature was for the two Whippled 496 engines that you built that run WOT on Havasu. What is their crank case oil temp during extended WOT running? Ray, What it the max crankcase oil temperature that the two Havasu Whippled 496 engines you mentioned above experience when run extended WOT? |
The highest oil temperature the customer ever related to me was that the oil would sometimes get to 240-250 degrees after hard WOT runs of longer duration and then would cool back down to the 180-190 degree range very quickly in a few minutes or so. With the synthetic 20-50w oils being used I do not think these are problem temperatures.
Best Regards, Ray @ Raylar |
Originally Posted by Raylar
(Post 3628119)
The highest oil temperature the customer ever related to me was that the oil would sometimes get to 240-250 degrees after hard WOT runs of longer duration and then would cool back down to the 180-190 degree range very quickly in a few minutes or so. With the synthetic 20-50w oils being used I do not think these are problem temperatures.
Best Regards, Ray @ Raylar I saw the dyno runs. It's a flippin' beast @ 812 hp 5300 rpm. |
Originally Posted by Raylar
(Post 3628119)
The highest oil temperature the customer ever related to me was that the oil would sometimes get to 240-250 degrees after hard WOT runs of longer duration and then would cool back down to the 180-190 degree range very quickly in a few minutes or so. With the synthetic 20-50w oils being used I do not think these are problem temperatures.
Best Regards, Ray @ Raylar |
| All times are GMT -5. The time now is 01:53 PM. |
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.