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Engine water pump supplier [message #306888]

Sat, 10 September 2016 17:14

Scott Nutter

Messages: 782
Registered: January 2015
Location: Houston/San Diego

Karma: 4

Senior Member

I've been through all the previous post for the water pump model numbers. Unfortunately those model numbers don't seem to be avail with the cast iron impeller, with the backing, at 4 1/4" diameter. A lot of stamped impellers but their diameters look to be less than 4".

Any suggestions on where to find a high quality water pump to fit the 455? Or are they no longer available, so go Chinese? I hope not....

Thanks, Scott.

Scott Nutter 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI Houston, Texas

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Re: Engine water pump supplier [message #306890 is a reply to message #306888]

Sat, 10 September 2016 17:23

tphipps

Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL

Karma: 9

Senior Member

JmK and others.
Tom, MS II

2012 Phoenix Cruiser model 2552 KA4CSG

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Re: [GMCnet] Engine water pump supplier [message #306892 is a reply to message #306890]

Sat, 10 September 2016 17:40

Gary Worobec

Messages: 867
Registered: May 2005

Karma: -1

Senior Member

You can never go wrong in ordering those type of parts from JimK. Things like water pumps, fan clutches, alternators. I’ve never gotten anything from Jim that was of poor quality or did not fit the first time. You might have to pay a couple of extra bucks but you only cry once. Plus, Jim’s advice is always free.

> On Sep 10, 2016, at 3:23 PM, Thomas Phipps wrote:
>
> JmK and others.
> Tom, MS II
> --
> 1975 GMC Avion
> KA4CSG
>
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Gary and Joanne Worobec
Anza, CA
1973 Glacier 23

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Re: Engine water pump supplier [message #306895 is a reply to message #306888]

Sat, 10 September 2016 17:53

Scott Nutter

Messages: 782
Registered: January 2015
Location: Houston/San Diego

Karma: 4

Senior Member

That is my backup plan if I can't find one with the cast iron impeller. Appears by his pictures that his impeller is stamped vs cast iron.
Maybe I'm being too picky.

Scott Nutter 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI Houston, Texas

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Re: [GMCnet] Engine water pump supplier [message #306897 is a reply to message #306888]

Sat, 10 September 2016 18:41

Ken Henderson

Messages: 8726
Registered: March 2004
Location: Americus, GA

Karma: 9

Senior Member

Scott,

Call me a Luddite, but I consider the cast impeller to be no more desirable
than the stamped. Fact is, I've even had good luck with the AutoZone
severe duty pumps, even when running them backward with a serpentine belt.
I did some flow testing for Leigh Harrison when he was designing a reverse
rotation pump for that purpose, using an expensive flow gauge he provided.
It's doubtful that anyone could tell the difference between the iron and
sheet metal impellers (or 4-1/4" vs 4") without such instrumentation. If
you have a cooling problem, it's probably NOT the non-leaking water pump.

JMHO,

Ken H.

On Sat, Sep 10, 2016 at 6:14 PM, Scott Nutter wrote:

> I've been through all the previous post for the water pump model numbers.
> Unfortunately those model numbers don't seem to be avail with the cast iron
> impeller, with the backing, at 4 1/4" diameter. A lot of stamped impellers
> but their diameters look to be less than 4".
>
> Any suggestions on where to find a high quality water pump to fit the 455?
> Or are they no longer available, so go Chinese? I hope not....
>
> Thanks, Scott.
> --
> Scott Nutter
> 1978 455 Royale Center Kitchen, Quad bags.
> Houston, Texas
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach

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Re: Engine water pump supplier [message #306899 is a reply to message #306888]

Sat, 10 September 2016 19:17

Scott Nutter

Messages: 782
Registered: January 2015
Location: Houston/San Diego

Karma: 4

Senior Member

Thanks Ken. No cooling problems on my coach.
I'm just getting ready for a engine swap, and I want every thing on the new engine to be 100%.
That's why I'm being extra careful. I would hate to crack a new engine because of a relitivily inexpensive part.
I am even going to put in a new radiator even thogh the old one seems ok. I'm just anal that way..

Scott Nutter 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI Houston, Texas

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Re: Engine water pump supplier [message #306900 is a reply to message #306888]

Sat, 10 September 2016 19:25

jhbridges

Messages: 8412
Registered: May 2011
Location: Braselton ga

Karma: -74

Senior Member

One thing you do want to check - you want a pump with roller bearings in front. Many are ball bearings front and back, for heavy service - zillion pound fan - get one with the rollers in front and balls in back.

--johnny

Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell

[Updated on: Sat, 10 September 2016 19:26]

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Re: Engine water pump supplier [message #306904 is a reply to message #306888]

Sat, 10 September 2016 19:56

wally

Messages: 643
Registered: August 2004
Location: Omaha Nebraska

Karma: 5

Senior Member

Scott Nutter wrote on Sat, 10 September 2016 17:14

I've been through all the previous post for the water pump model numbers. Unfortunately those model numbers don't seem to be avail with the cast iron impeller, with the backing, at 4 1/4" diameter. A lot of stamped impellers but their diameters look to be less than 4".

Any suggestions on where to find a high quality water pump to fit the 455? Or are they no longer available, so go Chinese? I hope not....

Thanks, Scott.

Gateway has pumps with 4" cast impeller. I have one as a spare.
http://www.gmcmotorhomeparts.com/GMC_Motor_Home_Parts_specials.htm
You can remove your original 4.25" impeller and put it on a reman pump. Done that twice.
http://wallyandsue.blogspot.com/search/label/Cast%20impeller.
HTH

Wally Anderson
Omaha NE
75 Glenbrook

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Re: Engine water pump supplier [message #306906 is a reply to message #306888]

Sat, 10 September 2016 20:20

Scott Nutter

Messages: 782
Registered: January 2015
Location: Houston/San Diego

Karma: 4

Senior Member

Johnny,
If I go to my local Napa store here in Texas and order a pump with that description I will get my a$$ kicked!!
Do you have a part number for what your describing?
Scott

Scott Nutter 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI Houston, Texas

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Re: [GMCnet] Engine water pump supplier [message #306909 is a reply to message #306906]

Sat, 10 September 2016 20:44

Sandra Price

Messages: 709
Registered: May 2006

Karma: 1

Senior Member

Scott, Bob says you are absolutely right about trying to order it in Texas.

Sandra

On Sep 10, 2016 7:21 PM, "Scott Nutter" wrote:

> Johnny,
> If I go to my local Napa store here in Texas and order a pump with that
> description I will get my a$$ kicked!!
> Do you have a part number for what your describing?
> Scott
> --
> Scott Nutter
> 1978 455 Royale Center Kitchen, Quad bags.
> Houston, Texas
>
> _______________________________________________
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> Unsubscribe or Change List Options:
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Re: Engine water pump supplier [message #306910 is a reply to message #306888]

Sat, 10 September 2016 20:59

Scott Nutter

Messages: 782
Registered: January 2015
Location: Houston/San Diego

Karma: 4

Senior Member

Well Sandra, tell Bob thanks A lot!!!
I don't have to go to napa to get my butt kicked. I can get that done here at home.
Oh no.... Here she comes........I'm toast........

Scott Nutter 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI Houston, Texas

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Re: [GMCnet] Engine water pump supplier [message #306940 is a reply to message #306910]

Sun, 11 September 2016 10:58

Sandra Price

Messages: 709
Registered: May 2006

Karma: 1

Senior Member

He'd agree with you there, too, especially since we have been rving, in
close quarters, since 8-2.

Sandra

On Sep 10, 2016 8:00 PM, "Scott Nutter" wrote:

> Well Sandra, tell Bob thanks A lot!!!
> I don't have to go to napa to get my butt kicked. I can get that done here
> at home.
> Oh no.... Here she comes........I'm toast........
> --
> Scott Nutter
> 1978 455 Royale Center Kitchen, Quad bags.
> Houston, Texas
>
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Re: Engine water pump supplier [message #306947 is a reply to message #306888]

Sun, 11 September 2016 11:36

jhbridges

Messages: 8412
Registered: May 2011
Location: Braselton ga

Karma: -74

Senior Member

See Tom Pryor's post on the subject, he's done a lot of research into the situation. Having lost the front bearing on my short coach I can tell you - you don't wanna do that. That was what cost me and Jazz a day at RD's Service in Gastonia. Pics (of RDs) in the photo site.

--johnny

Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell

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Re: Engine water pump supplier [message #306952 is a reply to message #306947]

Sun, 11 September 2016 12:38

Loffen

Messages: 1087
Registered: August 2013
Location: Norway

Karma: 1

Senior Member

I bought a cheap high volume pump from pro-comp, for sure Chinese, but it did hold up when I did run in my new engine (a lot of heat)and it is dirt cheap, I have no idea of how long it will work but I guess I will find out and are not to worried, the build quality was actually pretty good, of course no cast iron impeller but I am pretty sure that the high volume design will keep up anyways

http://www.ebay.com/itm/Oldsmobile-High-Volume-Aluminum-Long-Water-Pump-Satin-/301939907078?hash=item464d055a06:g:GisAAOSws8ZXHf18&vxp=mtr

1973 23' # 1848 Sky Blue Glacier called Baby Blue and a 1973 26'-3 # 1460 Parrot green Seqouia Known as the Big Green, And sold my 1973 26'-2 # 581 White Canyon lands under the name Dobbelt trøbbel in Norway

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Re: Engine water pump supplier [message #306956 is a reply to message #306888]

Sun, 11 September 2016 14:45

jhbridges

Messages: 8412
Registered: May 2011
Location: Braselton ga

Karma: -74

Senior Member

The concern isn't so much moving water as the front bearing failing from side load - weight of the fan and clutch. When mine failed it spit the belts and tore up the pulley at the same time. As far as we could tell from salvage yards around that part of the Carolinas, the pulley is common only to the GMC. We had to have a machine shop weld it back together and true it.

--johnny

Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell

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Re: Engine water pump supplier [message #306958 is a reply to message #306888]

Sun, 11 September 2016 15:00

Scott Nutter

Messages: 782
Registered: January 2015
Location: Houston/San Diego

Karma: 4

Senior Member

Hey Johnny,

With a suggestion fron Tom Pryor I've been searching for water pumps with the roller bearings in the front and ball bearings in the rear.
So far I have only found one. It's called Tuff Stuff made here in the USA at around $80.

Jim K also has a real nice aluminum hi volume water pump at around $130. I need to call him to find out its bearing design.

I'm starting to see light at the end of the tunnel!
Scott.

Scott Nutter 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI Houston, Texas

[Updated on: Sun, 11 September 2016 15:04]

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Re: Engine water pump supplier [message #306981 is a reply to message #306888]

Sun, 11 September 2016 19:24

jhbridges

Messages: 8412
Registered: May 2011
Location: Braselton ga

Karma: -74

Senior Member

Good, Scott. May I suggest as a Tejan you might want to subscribe to my favorite Manly Man's magazine, Truck and Testicle

--johnny

Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell

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Re: [GMCnet] Engine water pump supplier [message #306984 is a reply to message #306899]

Sun, 11 September 2016 19:20

Jim Miller

Messages: 501
Registered: March 2008

Karma: 10

Senior Member

On Sep 10, 2016, at 8:17 PM, Scott Nutter wrote:

> I'm just getting ready for a engine swap, and I want every thing on the new engine to be 100%.
> That's why I'm being extra careful. I would hate to crack a new engine because of a relitivily inexpensive part.

Hi Scott,
If you are going to have the timing cover off... then I’d suggest that you bolt your chosen water pump up to it and check the alignment between the holes in the cover and the water pump casting. When I rebuilt my engine I found that part of the water pump housing was blocking about 30% of the hole through the cover on the driver’s side…and that was on the same side that had a crack in the head in the #1 cylinder which was the cause of the top-end rebuild in the first place.

I took some pictures of a mock-up in order to help show my findings: http://www.jcmco.com/gallery/album28

—Jim

Jim Miller
1977 Eleganza
1977 Royale
Hamilton, OH

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Jim Miller 1977 Eleganza II 1977 Royale Hamilton, OH

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Re: Engine water pump supplier [message #306986 is a reply to message #306888]

Sun, 11 September 2016 20:17

Scott Nutter

Messages: 782
Registered: January 2015
Location: Houston/San Diego

Karma: 4

Senior Member

Johnny,
I already have that subscription. In fact I get it twice a month!
Scott

Scott Nutter 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI Houston, Texas

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