495 Stroker Oil Pressure
May 2nd, 2017, 10:39 AM
#1
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Join Date: Mar 2015
Location: Calgary
Posts: 115
495 Stroker Oil Pressure
Gents:
I am in the process of breaking in a 455 Olds stroker ( 495 DSS kit). The oil pressure gauge ( Olds gauge) shows the pressure dropping off slightly when I add some revs when it is already at partial throttle. When you ease off on the throttle the pressure goes back to where it originally was. A mechanical gauge is the process of being rigged up so that it can be related to actual pressure values. The oil pan is a 7 qt Milodon pan with the matching Milodon pickup. The oil pump is a high volume Melling oil pump. I have my own ideas on this but would like to hear from folks who had something similar and solved it.
I am in the process of breaking in a 455 Olds stroker ( 495 DSS kit). The oil pressure gauge ( Olds gauge) shows the pressure dropping off slightly when I add some revs when it is already at partial throttle. When you ease off on the throttle the pressure goes back to where it originally was. A mechanical gauge is the process of being rigged up so that it can be related to actual pressure values. The oil pan is a 7 qt Milodon pan with the matching Milodon pickup. The oil pump is a high volume Melling oil pump. I have my own ideas on this but would like to hear from folks who had something similar and solved it.
May 2nd, 2017, 11:04 AM
#2
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Join Date: Aug 2005
Location: Braceville, Ohio
Posts: 1,972
I'd buy a name brand mechanical oil pressure and same for water temperature gauges. Do this before you start it again and pull the oil filter. Fill with oil a new NAPA Gold oil filter. Then cut open the filter you took off especially in the pleats. If you have metal, forget about starting it again, tear it down.JMO. DSS? Dave Smith? ?
May 3rd, 2017, 02:51 AM
#5
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Join Date: Oct 2009
Location: Poteau, Ok
Posts: 40,521
The reason for using a larger oil pan is not to fill with more oil but to lower the level of the oil to prevent foaming from the crank. I your running a lowered pickup, drain 2 qts and see what happens.
May 3rd, 2017, 08:51 AM
#6
Once Olds Always Olds
Join Date: Nov 2011
Location: New Matamoras, Ohio
Posts: 1,202
A Melling high volume oil pump is not a high pressure pump. The pump as it comes will only produce 45 to low 50s pounds of pressure. To correct this you must call Melling and ask for the purple spring. No part number, just the purple spring.
May 3rd, 2017, 08:52 AM
#7
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Join Date: Jun 2010
Location: Rogues Island, USA
Posts: 3,613
Just off the top of my head.....
People have reported the oil pickup being too close to the oil pan floor and sucking it up tight to the pickup restricting flow. I have seen many oil pickups with a strap or some other device that restricts the pan from blocking off the pickup.
How far was your oil pickup from the pan floor?
People have reported the oil pickup being too close to the oil pan floor and sucking it up tight to the pickup restricting flow. I have seen many oil pickups with a strap or some other device that restricts the pan from blocking off the pickup.
How far was your oil pickup from the pan floor?
September 5th, 2018, 12:20 PM
#8
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Join Date: Apr 2012
Location: Bradenton, FL
Posts: 1,467
Purple spring part number
So really, Melling doesn't have a PN for this...?
September 5th, 2018, 01:10 PM
#9
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Join Date: Jun 2010
Location: Rogues Island, USA
Posts: 3,613
https://www.summitracing.com/parts/m...SABEgLLwPD_BwE
How many do you want? Tons of places have these. Internet search is your friend
How many do you want? Tons of places have these. Internet search is your friend
September 9th, 2018, 02:35 PM
#11
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Join Date: Nov 2008
Location: Central Fl
Posts: 7,822
I know this is an old thread but you can call Melling for the spring. OR all the new pumps are now coming with them in a separate package inside the box.
Last edited by cutlassefi; September 9th, 2018 at 02:39 PM.
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