Oil pickup hitting pan - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 07-08-2011, 04:51 PM
1986c10's Avatar
Registered User
 
Last photo:
Join Date: Mar 2011
Location: Kalamazoo, Michigan
Posts: 168
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
Oil pickup hitting pan

Hi, once again i have another thread to add to my thousand others and i am sorry haha. I have a chevy 350 that i just rebuilt. Its a 92 2 bolt roller and im using the stock pan. I bought from the parts store a melling m-55hv (i asked for an oem one and non-high volume and thats what i got and just realized after installing) and 55-S2 pickup screen. The pan hits the pickup screen at the rear unless i tilt it at about 15-20 degree angle. Is this too much of an angle? Or is that pump supposed to be used with a deeper pan and the oem non-hv pump would fit fine? Thanks in advance.


    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 07-08-2011, 04:58 PM
eloc431962's Avatar
Evil Wicked Mean And Nasty
 
Last wiki edit: Pilot bearing and bushings
Last journal entry: roof repair
Last photo:
Join Date: Nov 2008
Location: back in the garage.
Posts: 13,762
Wiki Edits: 37

Thanks: 50
Thanked 28 Times in 24 Posts
Do you really think you need the HV oilpump ? It works two way's get another pan or go back to the stock non HV oil-pump. it really needs to be sitting as level in the pan as can be and should be in the oil. JMO I have seen people run them like that but not me IMHO. I would take that pump back and get the other pump if it was me, or buy another pan but IMHO you probably don't really need the HV pump anyway. JMO


Cole
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 07-08-2011, 05:08 PM
1986c10's Avatar
Registered User
 
Last photo:
Join Date: Mar 2011
Location: Kalamazoo, Michigan
Posts: 168
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
exactly. I didnt want a hv and specifically asked for a standard and they reassured me it was standard, its not and they wont exchange. Im not opposed to running a hv but didnt feel like coughing up the cash for the pan. Do you feel that the hv oil pump is taller for some reason causing the clearance problem? Thanks for the response. I appreciate the input
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 07-08-2011, 07:37 PM
adantessr's Avatar
'23 T-Bucket Pickup
 
Last wiki edit: Troubleshooting ignition Last photo:
Join Date: Jun 2010
Location: South Charleston , WV
Age: 62
Posts: 1,549
Wiki Edits: 3

Thanks: 43
Thanked 17 Times in 15 Posts
I guess that you know by now that the OEM volume pump is the M-55 without the HV. I would bite the bullet and buy the M-55. It is frustrating I know, but it is cheaper than another oil pan. And when you compare the two pumps, I think that you will find that the HV is taller due to it having longer pump gears and housing.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 07-08-2011, 08:16 PM
Richiehd's Avatar
JS-70
 
Last photo:
Join Date: Jun 2011
Location: Jupiter FL
Posts: 831
Wiki Edits: 0

Thanks: 145
Thanked 55 Times in 48 Posts
Quote:
Originally Posted by adantessr
I guess that you know by now that the OEM volume pump is the M-55 without the HV. I would bite the bullet and buy the M-55. It is frustrating I know, but it is cheaper than another oil pan. And when you compare the two pumps, I think that you will find that the HV is taller due to it having longer pump gears and housing.
Correct
The pump you want is the Melling SELECT. The m55 and the m55hv had problems with the neck breaking. You should have got a not in the box when you got it. Use only the select series. It comes with a higher pressure bypass also.
Google it, Speedway sells it
Standard volume 10553, comes with a all steel drive too.

Last edited by Richiehd; 07-08-2011 at 08:29 PM.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 07-08-2011, 08:53 PM
GMC boogie's Avatar
Member
 
Last photo:
Join Date: Nov 2004
Location: Louisiana
Age: 48
Posts: 614
Wiki Edits: 0

Thanks: 1
Thanked 18 Times in 18 Posts
I would exchange the pump for a standard volume but, your problem is due to the 55s2 screen.....you need the 55s1
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 07-09-2011, 10:16 AM
1986c10's Avatar
Registered User
 
Last photo:
Join Date: Mar 2011
Location: Kalamazoo, Michigan
Posts: 168
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
Yeah, the guy reassured me so many times it was standard volume that i didnt even bother checking the box. But i can get a 7 quart pan with pickup for 90 bucks. Should i do that or just stick with trying to get a standard pickup and pump.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 07-09-2011, 12:52 PM
Registered User
 
Join Date: Jun 2010
Location: TX
Posts: 1,168
Wiki Edits: 0

Thanks: 0
Thanked 101 Times in 93 Posts
Melling Select

I went through the same problem last year with my 4.3L V6. I used a Melling Select 10552 (high volume-standard pressure) which uses a 3/4" pick up tube. Those are rugged oil pumps and have the spur gear shafts extended into the pump bottom cover for better stability. I also used a MSD marine certified distributor gear. The Melling 10552 oil pump spur gears, pump housing, 3/4" pick up tube and bottom cover is 0.457" longer than a standard volume oil pump. That relocates the pick up screen about 1/2" closer to the bottom of the pan. With only 3/8" pan to screen clearance with a standard volume oil pump, you can use simple math and see that a 1/2" deeper oil pan must be used or a 1/2" shorter pick up tube. On a Chevy S10 Blazer 4x4 the pick up iscreen assembly is designed for a stock oil pan that is 9-1/4" deep. In 1992 through 1997, GM started using 3/4" oil pick up tubes on all the Chevrolet 4.3L V6 and SB V8 standard volume oil pumps. The larger diameter pick up tube does not necessarily make the pump a HV oil pump.

In your situation, you should get a Melling Select standard volume/standard pressure oil pump with a 3/4" pick up tube or a Melling M155 oil pump with a Mellimng 155S pick up. The larger 155S pick up tube fits a standard SBC oil pan. The difference between a 5/8" and 3/4" tube is made up with a 1/8" thicker bottom cover on the oil pump that uses a 3/4" pick up tube.

I definately wanted to use a HV pump but only because of the oil cooler, oil tubing and remote filter on a S10 Blazer 4x4. After trying unsuccessfully to fit four different aftermarket pick ups, I finally cut a 1/2" section from the Melling 3/4" S10 Blazer 4x4 pick-up tube and wire-welded it back together with the screen indexed correctly. Shortening the pick-up tube 1/2" worked great leaving 1/2" clearace between the bottom of the oil pan and the pick-up screen.

Last edited by MouseFink; 07-09-2011 at 01:16 PM.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 07-12-2011, 08:11 PM
1986c10's Avatar
Registered User
 
Last photo:
Join Date: Mar 2011
Location: Kalamazoo, Michigan
Posts: 168
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
thanks for the suggestions. im just gonna toss that pump in the trash and get a standard select pump and use the stock pan. Thanks alot guys in diagnosing my problem!
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 07-12-2011, 08:16 PM
1986c10's Avatar
Registered User
 
Last photo:
Join Date: Mar 2011
Location: Kalamazoo, Michigan
Posts: 168
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
one more thing before i order the melling select. it says the gears are 25% longer. To me that sounds like a taller pump and more clearance issues... correct me if im wrong.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 07-12-2011, 08:36 PM
adantessr's Avatar
'23 T-Bucket Pickup
 
Last wiki edit: Troubleshooting ignition Last photo:
Join Date: Jun 2010
Location: South Charleston , WV
Age: 62
Posts: 1,549
Wiki Edits: 3

Thanks: 43
Thanked 17 Times in 15 Posts
Quote:
Originally Posted by 1986c10
one more thing before i order the melling select. it says the gears are 25% longer. To me that sounds like a taller pump and more clearance issues... correct me if im wrong.
Sounds to me like the same kettle of fish. I would just install the M-55 and be done. Also, I wouldn't trash that pump. I mean how much storage space does it take? Someone you know may want it someday. Just make sure that it is oiled before you bag it.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 07-13-2011, 04:52 AM
Registered User
 
Join Date: Jun 2010
Location: TX
Posts: 1,168
Wiki Edits: 0

Thanks: 0
Thanked 101 Times in 93 Posts
M155 pump

As I wrote before, all the Melling Select high volume oil pumps have spur gears and a pump housing that is .300" longer (25%) than the standard volume oil pump. The longer spur gears and the thicker bottom cover makes the entire pump .457" longer. That oil pump and a Melling pickup screen will not fit inside a stock oil pan.

You can install a Melling M155 oil pump without any clearance issues. It is a standard volume oil pump that accepts a 3/4" pick up tube assembly. The tube size is the only difference between the M55 and the M155 oil pump.

I read where GM was having warranty problems with some customers engines. The engineers determined that some customers SB V8/V6 engines equipped with oil pumps that had a 5/8" oil pump pickup tube were burning out the main bearings while still under warranty. In 1996 Chevrolet started using 3/4" pick up in all V8/V6 engines and apparently that solved the problem. I have a suspicion that when the engines that burned out the bearings were assembled at the factory, the "hidden plug" under the rear main cap was left out and GM did not want to publicize their poor assembly practices.

Last edited by MouseFink; 07-13-2011 at 05:07 AM.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 07-13-2011, 08:49 AM
Richiehd's Avatar
JS-70
 
Last photo:
Join Date: Jun 2011
Location: Jupiter FL
Posts: 831
Wiki Edits: 0

Thanks: 145
Thanked 55 Times in 48 Posts
Quote:
Originally Posted by 1986c10
one more thing before i order the melling select. it says the gears are 25% longer. To me that sounds like a taller pump and more clearance issues... correct me if im wrong.
Go with the select 10553, standard volume , standard pressure
Google it, comes on on Speedway motors
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 07-13-2011, 10:46 AM
1986c10's Avatar
Registered User
 
Last photo:
Join Date: Mar 2011
Location: Kalamazoo, Michigan
Posts: 168
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
thanks mousefink, i'll be going with the m55 because i dont wanna buy a new pan.

that model number is the one i said was 25% longer gears so i'll be getting a m55
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 07-13-2011, 10:52 AM
Richiehd's Avatar
JS-70
 
Last photo:
Join Date: Jun 2011
Location: Jupiter FL
Posts: 831
Wiki Edits: 0

Thanks: 145
Thanked 55 Times in 48 Posts
Quote:
Originally Posted by 1986c10
thanks mousefink, i'll be going with the m55 because i dont wanna buy a new pan.

that model number is the one i said was 25% longer gears so i'll be getting a m55
That m55 has issues, comes with warning in the box about using on high performance applications, its why I suggested thw Mellin Select
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
tie rod hitting oil pan capt nasty Suspension - Brakes - Steering 2 06-25-2011 01:21 PM
Connecting Rod Cap Hitting Cam SeniorRodder Engine 7 09-01-2010 08:13 PM
crank hitting cam casper1 Introduce Yourself 4 03-16-2007 06:44 PM
Not hitting 3rd? unstable Transmission - Rearend 5 08-26-2003 06:19 AM
Hitting Valves Daved Engine 6 07-25-2003 01:48 PM


All times are GMT -6. The time now is 04:37 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.