Oil Priming my 327. I Hear a gear noise - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chewychevy67 · 04-05-2020, 08:35 PM

I primed my fresh 327 today. Dropped the distributor in and turned it by hand. Has good pressure. I can hear the gears from the pump with the distributor or if I use just a screw driver. It's a melling 10552 pump and melling shaft. Oil got to the lifters nicely as it should and that all looks good. Take a listen to this video and have a listen and let me know if this is normal please. The engine was already primed when this video was taken. Watch "Distributor noise 327" on YouTube
https://youtu.be/yxYskCEgSHA

**Captainfab** · 04-05-2020, 09:38 PM

I am surprised you have that much oil pressure turning it that slow. Also how are you able to turn your distributor. It should be engaged with the cam gear.

chewychevy67 · 04-05-2020, 10:01 PM

I kind of thought that too. I have an end on the bottom of the distributor that has no gears on it so it only contacts the oil pump shaft. It's just for priming.

chewychevy67 · 04-05-2020, 10:24 PM

This is the oil I have in the engine.

chewychevy67 · 04-05-2020, 11:48 PM

I put another new melling high volume oil pump in a bucket of oil and turned it as well and it makes the same noise so can this really be the way they are? Watch "Melling oil pump" on YouTube
https://youtu.be/7pEh3NDXEiA

cadillac_al · 04-06-2020, 01:30 PM

I'm stumped, I don't recall oil pumps making noise like that.

**dayj1** · 04-09-2020, 05:07 PM

Quote:

Originally Posted by chewychevy67

I primed my fresh 327 today. Dropped the distributor in and turned it by hand. Has good pressure. I can hear the gears from the pump with the distributor or if I use just a screw driver. It's a melling 10552 pump and melling shaft. Oil got to the lifters nicely as it should and that all looks good. Take a listen to this video and have a listen and let me know if this is normal please. The engine was already primed when this video was taken. Watch "Distributor noise 327" on YouTube
https://youtu.be/yxYskCEgSHA

I'm not much help other than to say that I feel your pain. About a month ago, I was helping a friend prime his rebuilt 350 before startup (and luckily still on the engine stand) and it made exactly the same noise. We got a brand new melling pump and same noise. The third new pump that we tried was quiet. I read all kinds of stuff about the noise online with all sorts of opinions. From the folks who called melling, responses ranged from "It's OK" to "Turn it backwards. If it's quiet, then it's OK". But that makes zero sense to me. I wasn't about to run a pump that was that loud.

kaycee · 04-09-2020, 09:27 PM

Does it make that much noise with a drill attached to it to spin? Don't think I would be running it

chewychevy67 · 04-09-2020, 09:37 PM

My drill is loud but I can hear it a bit. My engine builder told me he has run melling pumps with noise like this before and not had problems other than you can sometimes hear it. Funny thing is I have 2 brand new melling pumps that make the same noise. If I knew I didn't have to buy 5 more to get a quiet one I would but who knows.

chewychevy67 · 04-10-2020, 11:26 AM

I bought a new pump today. A melling with what they call "sharks teeth". It's supposed to run smoother. I'll update here when I get it installed.

toolboxchev · 04-10-2020, 12:09 PM

I have heard of the new pumps with the re-designed teeth. They are supposed to be better is some aspect.

I have not heard of the gear noise issue, I would call Melling.

kaycee · 04-15-2020, 07:19 PM

Did you find out anything on the noise?

chewychevy67 · 04-15-2020, 08:29 PM

I haven't got my new pump yet. I bought it online instead ov at a parts house. Once I get it I'll switch them and report back

jbarron · 04-21-2020, 04:37 PM

I just put a new Melling in and it has the same gear noise.
Been running it and it is getting better.

chewychevy67 · 04-21-2020, 07:27 PM

Can you hear it when the engine idles?

jbarron · 04-22-2020, 04:13 PM

Not with the exhaust I have. Alternator whines more.

chewychevy67 · 04-23-2020, 01:20 AM

My new shark teeth style pump is here tomorrow. I want to see if it's as noisy as these straight cut gear ones are. If they are ill just leave the pump alone.

chewychevy67 · 04-23-2020, 04:41 PM

Got my shark tooth pump today. Same pump number I had before but it's the st type. I just set it in a can of fresh oil and spun it. Wow. Way quieter than the other. Looks like I'll be changing pumps tomorrow.

**AussieinNC** · 04-24-2020, 08:01 PM

All the Melling pumps I have installed in last 12 months needed to be clearanced internally....

There are a couple of areas internally that need to be ever so slightly touched up with a small die grinder....they then run quietly....

Shark tooth style dont need the same attention....so may be the best way to go in the future.

04-05-2020, 08:35 PM	#1
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,408	Oil Priming my 327. I Hear a gear noise I primed my fresh 327 today. Dropped the distributor in and turned it by hand. Has good pressure. I can hear the gears from the pump with the distributor or if I use just a screw driver. It's a melling 10552 pump and melling shaft. Oil got to the lifters nicely as it should and that all looks good. Take a listen to this video and have a listen and let me know if this is normal please. The engine was already primed when this video was taken. Watch "Distributor noise 327" on YouTube https://youtu.be/yxYskCEgSHA Last edited by chewychevy67; 04-05-2020 at 08:40 PM.

04-05-2020, 09:38 PM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: Oil Priming my 327. I Hear a gear noise I am surprised you have that much oil pressure turning it that slow. Also how are you able to turn your distributor. It should be engaged with the cam gear. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

04-05-2020, 10:01 PM	#3
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,408	Re: Oil Priming my 327. I Hear a gear noise I kind of thought that too. I have an end on the bottom of the distributor that has no gears on it so it only contacts the oil pump shaft. It's just for priming.

04-05-2020, 10:24 PM	#4
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,408	Re: Oil Priming my 327. I Hear a gear noise This is the oil I have in the engine. Attached Images

04-05-2020, 11:48 PM	#5
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,408	Re: Oil Priming my 327. I Hear a gear noise I put another new melling high volume oil pump in a bucket of oil and turned it as well and it makes the same noise so can this really be the way they are? Watch "Melling oil pump" on YouTube https://youtu.be/7pEh3NDXEiA

04-06-2020, 01:30 PM	#6
cadillac_al Registered User Join Date: Oct 2013 Location: Maine Posts: 2,332	Re: Oil Priming my 327. I Hear a gear noise I'm stumped, I don't recall oil pumps making noise like that. __________________ 76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10

04-09-2020, 09:27 PM	#8
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,443	Re: Oil Priming my 327. I Hear a gear noise Does it make that much noise with a drill attached to it to spin? Don't think I would be running it __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

04-09-2020, 09:37 PM	#9
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,408	Re: Oil Priming my 327. I Hear a gear noise My drill is loud but I can hear it a bit. My engine builder told me he has run melling pumps with noise like this before and not had problems other than you can sometimes hear it. Funny thing is I have 2 brand new melling pumps that make the same noise. If I knew I didn't have to buy 5 more to get a quiet one I would but who knows.

04-10-2020, 11:26 AM	#10
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,408	Re: Oil Priming my 327. I Hear a gear noise I bought a new pump today. A melling with what they call "sharks teeth". It's supposed to run smoother. I'll update here when I get it installed.

04-10-2020, 12:09 PM	#11
toolboxchev Registered User Join Date: Jul 2015 Location: 2nd left past the stump on a dirt road. Posts: 2,629	Re: Oil Priming my 327. I Hear a gear noise I have heard of the new pumps with the re-designed teeth. They are supposed to be better is some aspect. I have not heard of the gear noise issue, I would call Melling.

04-15-2020, 07:19 PM	#12
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,443	Re: Oil Priming my 327. I Hear a gear noise Did you find out anything on the noise? __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

04-15-2020, 08:29 PM	#13
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,408	Re: Oil Priming my 327. I Hear a gear noise I haven't got my new pump yet. I bought it online instead ov at a parts house. Once I get it I'll switch them and report back

04-21-2020, 04:37 PM	#14
jbarron Registered User Join Date: Apr 2006 Location: Spring, Texas Posts: 167	Re: Oil Priming my 327. I Hear a gear noise I just put a new Melling in and it has the same gear noise. Been running it and it is getting better. __________________ '72 3/4 Cheyenne Super 402/TH400 Gear Vendors '72 3/4 Cheyenne Super 350/200R4 '50 1/2 Chevy 3 Window

04-21-2020, 07:27 PM	#15
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,408	Re: Oil Priming my 327. I Hear a gear noise Can you hear it when the engine idles?

04-22-2020, 04:13 PM	#16
jbarron Registered User Join Date: Apr 2006 Location: Spring, Texas Posts: 167	Re: Oil Priming my 327. I Hear a gear noise Not with the exhaust I have. Alternator whines more. __________________ '72 3/4 Cheyenne Super 402/TH400 Gear Vendors '72 3/4 Cheyenne Super 350/200R4 '50 1/2 Chevy 3 Window



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04-23-2020, 01:20 AM	#17
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,408	Re: Oil Priming my 327. I Hear a gear noise My new shark teeth style pump is here tomorrow. I want to see if it's as noisy as these straight cut gear ones are. If they are ill just leave the pump alone.

04-23-2020, 04:41 PM	#18
chewychevy67 Registered User Join Date: Jan 2010 Location: Here Posts: 5,408	Re: Oil Priming my 327. I Hear a gear noise Got my shark tooth pump today. Same pump number I had before but it's the st type. I just set it in a can of fresh oil and spun it. Wow. Way quieter than the other. Looks like I'll be changing pumps tomorrow.

04-24-2020, 08:01 PM	#19
AussieinNC Moderator Join Date: Jun 2017 Location: Cherryville, NC Posts: 2,153	Re: Oil Priming my 327. I Hear a gear noise All the Melling pumps I have installed in last 12 months needed to be clearanced internally.... There are a couple of areas internally that need to be ever so slightly touched up with a small die grinder....they then run quietly.... Shark tooth style dont need the same attention....so may be the best way to go in the future. __________________ Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2012 Chevy Equinox

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