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Re: Bad day installing motor - need some advise
[Re: AndyF]
#425839
08/02/09 02:51 PM
08/02/09 02:51 PM
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Joined: Mar 2003
Posts: 753
San Diego, CA
brktracr
OP
super street
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OP
super street
Joined: Mar 2003
Posts: 753
San Diego, CA
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When we primed the pump, it went to 60 psi without any problems. It was at 60 lbs cold but kept dropping as the motor warmed up. I will pull the filter and the pump to see if anything unusual shows up.
1.298 60 ft
6.001 1/8 mile
114 mph
9.52 1/4 mile
140.87 mph
@ 3110 lbs
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Re: Bad day installing motor - need some advise
[Re: brktracr]
#425840
08/02/09 03:06 PM
08/02/09 03:06 PM
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Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
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I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
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Quote:
I'll try to answer the questions posted.
The cam is a Scott Brown roller, brand new Comp lifters, needed the extra .300" height do the extra thick lifter bores on the World Block. Lifters bores have been bushed, 1/2" internal oil pick up with a windage tray. When I raised the rpm's to 2300 the oil pressure moved all the way up to 25 lbs.  Didn't ever rev it over 2500 rpms because of the pressure situation. I have never experienced this low oil pressure situation with the 440 blocks but I know the World block is a different story. Bearings, both rod and mains, are clearanced to .003. Normally run 50w racing oil but like I stated never experienced this low pressure with a factory block. I'm not totally against Harland Sharps, my last set only lasted 13 years, new set didn't even make it to 4 minutes. 
But I am more concerned about the oil pressure.
Ok, 25psi at 2500 would be a problem. At that RPM it should be up in the 60-70 PSI range even with the light oil. Filter swap is easy enough. Like Andy said, should see 60psi priming with a drill. Swap the filter and try priming. If the oil press is low, remove the bypass and clean it, and re-install it. If it's still low, than a plug is either missing or leaking. Check the rocker shafts and make sure the plugs didn't blow out of them.
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Re: Bad day installing motor - need some advise
[Re: brktracr]
#425843
08/02/09 06:22 PM
08/02/09 06:22 PM
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Joined: Apr 2005
Posts: 1,880
USA
Ron Silva
top fuel
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top fuel
Joined: Apr 2005
Posts: 1,880
USA
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If it cooled off and the pressure did not recover, then it has a filter plugged with buildup debris, or a stuck oil pump bypass valve or a bad bearing (or something else freaky like a Plug that was there but fell out). If it is a bad rod bearing it should habve been a knocking and if a main it could be quiet. Either way the filter will be full of babit. If you lost oil pressure the filter will show it.
I did also have a motor that sucked up a chunk of metal and it trashed the oil pump rotors.
I would change the oil filter and check the old one and if nothing drastic, I would prime with a drill and see what you get. Then start it and see what you get and listen for strange noises. If that does not do it you need to check the oil pump bypass vv then the drive and pump rotors.
Good luck, I know this can be stressful.
SRT DEMON ONE SEAT
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Re: Bad day installing motor - need some advise
[Re: 440Jim]
#425845
08/09/09 11:55 AM
08/09/09 11:55 AM
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Joined: Mar 2003
Posts: 753
San Diego, CA
brktracr
OP
super street
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OP
super street
Joined: Mar 2003
Posts: 753
San Diego, CA
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Well, oil pressure issue fixed. We checked the bypass, we checked the filter, we checked the pick up, we didn't see anything unusual. It was the .300" taller Comp Cam lifters that I needed to order to fit the World Block. These lifters have push rod oiling and the hole in the lifter lines up perfectly with my bushed lifter holes when it on the base of the cam and flooding the valley area since we don't run push rod oiling. So we pull everything apart and "welded" the side oiling hole. Put it all back together, had 60 lbs cold and 50 lbs at temp, hold the rpms to 2000 and it was back a 60 lbs.. Car sounded happy, very responsive.
By the way, Harland Sharp sent me all new adjusters, nuts and a replacement rocker.
Thanks for all the responses and advise.
1.298 60 ft
6.001 1/8 mile
114 mph
9.52 1/4 mile
140.87 mph
@ 3110 lbs
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Re: Bad day installing motor - need some advise
[Re: brktracr]
#425846
08/09/09 12:13 PM
08/09/09 12:13 PM
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Joined: Apr 2005
Posts: 1,880
USA
Ron Silva
top fuel
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top fuel
Joined: Apr 2005
Posts: 1,880
USA
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That was a good find. That would be hard to discover in some cases.
I have had to plug the edge orfice holes on several sets of tappets in my W9 Motor for the exact same reason. I found that welding them usually boogered up the tappet more that I liked. And I tried tig, tig brazing, torch brazing etc..... So I would take drill bits and use the shank to make plugs and drive them in with red loctite. The shank on a drill bit is soft and you can buy all size drill bits because the holes seemed to vary a little.
As a side note, Brian's custom SB Comp Cams solid roller lifters resolve this problem once and for all! The Edge orfice oil feed holes are drilled paralell to the axle so the holes are on the side of the lifter.
SRT DEMON ONE SEAT
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Re: Bad day installing motor - need some advise
[Re: Ron Silva]
#425847
08/09/09 12:32 PM
08/09/09 12:32 PM
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Joined: Jan 2003
Posts: 5,406
Diego-Town, CA
Diego_Ted
master
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master
Joined: Jan 2003
Posts: 5,406
Diego-Town, CA
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Quote:
That was a good find.
As a side note, Brian's custom SB Comp Cams solid roller lifters resolve this problem once and for all! The Edge orfice oil feed holes are drilled paralell to the axle so the holes are on the side of the lifter.
Durand glad you found the problem. I use the lifters Brian sells with no issues. Hope to see you on the Res SOON!! 
Diego
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