This topic would have been discussed previously I'm guessing, but my genuine GMH waterpump developed a bearing noise after running my engine for awhile. Car sat unstarted for lots of years so guessing seals hardened up although no water was leaking out of the pump so perhaps bearings just corroded. Anyway can't buy these cast iron impeller type pumps anymore so unless someone has a good original Holden one they can sell me, is there a way to reliably recondition the originals? I've since fitted a Repco new one but these days they have this tinny looking impeller and I suspect they are Chinese made. Would rather try and stick to the originals when replacing parts on genuine XU1's. Any advice would be appreciated.
Refurbishing GMH water pumps
#1
Posted 18 October 2019 - 04:57 PM
#2
Posted 18 October 2019 - 05:23 PM
The cast impeller jobbies turn up at swap meets now and then too. Don’t forget that the pulley flange bolt spacing changed I think when the 161 and 186 replaced 149 179. Don’t ask me how I know this doh.
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#3
Posted 18 October 2019 - 05:40 PM
JDM Industries
(03) 9438 5291
25 Godber Road, Eltham VIC 3095
#4
Posted 18 October 2019 - 06:10 PM
They do for 308s
#5
Posted 18 October 2019 - 07:57 PM
#6
Posted 18 October 2019 - 10:00 PM
I bought a cast impellor pump a couple of years ago fairly easily through a local parts shop. It was a "Quinton Hazell" branded pump. Used to be a lot of QH stuff around in the past for many different makes of cars
#7
Posted 19 October 2019 - 08:27 AM
i think theres 3 different water pumps as i have bought a few just recently as want
cast impellor on chateau
DSC00790.JPG 129.07K 13 downloads
one on right wont take xu-1 fan
red one part number QCP 587/728 not a GMH one?..Fan fits this one
un painted one, on impellor holden 7420068
theres also a water pump thats used for air condition that has a longer shaft
#8
Posted 19 October 2019 - 09:27 AM
He rebuilds fuel and water pumps
#9
Posted 19 October 2019 - 10:02 AM
Will be a busy man if he does?
#10
Posted 19 October 2019 - 10:35 AM
Fuel pumps yes water pumps noIce is the man.
He rebuilds fuel and water pumps
#11
Posted 19 October 2019 - 10:35 AM
#12
Posted 19 October 2019 - 10:55 AM
if the smaller hub doesn’t fit it is an EH HD style. The QH hub looks to be set up to take both style pulley and fan.i think theres 3 different water pumps as i have bought a few just recently as want
cast impellor on chateau
DSC00790.JPG
one on right wont take xu-1 fan
red one part number QCP 587/728 not a GMH one?..Fan fits this one
un painted one, on impellor holden 7420068
theres also a water pump thats used for air condition that has a longer shaft
Yo can always press the cast impeller off and fit it in replacement of the pressed one.
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#13
Posted 19 October 2019 - 11:12 AM
Interesting that there was a different pump for the HD X2. I’d speculate this was to do with the water heated inlet manifold common to HD and HR X2s, and nothing to do with the hub.
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#14
Posted 19 October 2019 - 11:56 AM
Did all Holden 6 water pumps from the late 60's and early 70's have GM stamped on them. I'm guessing so by the comment by Grumpy XU1. There must be thousands out there somewhere, would still be hundreds that would suit reconditioning for the purists who own GTR's or XU1's and insist on originality. I guess 45 years is a long time to expect these sorts of parts to be still kicking around.
I'm with Grumpy XU1 if anyone has an original GM stamped pump they want to sell, I'm 2nd in line.
#15
Posted 19 October 2019 - 02:02 PM
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#16
Posted 19 October 2019 - 02:18 PM
Only if we knew ✌️You used to buy them at the rural supplies $5 a pop in late eighties. No one cared. Well hardly anyone....
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#17
Posted 21 October 2019 - 09:22 AM
Rang JDM Industries
quote to do a water pump for a 6 was $160
does the cast iron impeller aid in cooling better?
#18
Posted 21 October 2019 - 09:33 AM
#19
Posted 21 October 2019 - 09:35 AM
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#20
Posted 21 October 2019 - 10:27 AM
#21
Posted 21 October 2019 - 10:37 AM
Ill have to get around to sending off my single outlet V8 pump for overhaul. $160 is great value.
#22
Posted 21 October 2019 - 06:54 PM
Bend over or diy. Go buy a cheap press.
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A half decent press starts at $200 + if the pump is rebuilt, cleaned, new bearing, shaft ect & it's Australian there's nothing wrong with $160, it's a business, not a charity. There'd be 2 - 3 hours work in a water pump, possibly.
#23
Posted 21 October 2019 - 07:30 PM
Some would rather spend on the part and bolt it on but if you buy a press you might find there are one or two other jobs you could do with it.
Are the cast impellers more effective or is it that they don’t corrode as rapidly?
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#24 _fb delivery_
Posted 21 October 2019 - 08:32 PM
I used to have heaps of these rebuit kits
NOBODY wanted them, when i wold sell them a NOS one for $20
Rob
6cly v 8cly
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#25
Posted 21 October 2019 - 09:25 PM
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