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1500 fan pulley question

Posted by armymgdude

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1500 fan pulley question #1
armymgdude John Carroll Lawton, OK, USA 1972 MG Midget MkIII "Mira"	Posted: August 01, 2012 04:03PM Registered: 2 years ago Posts: 345

I am pretty sure I know the answer, but I wanted to get a second opinion before I break something. I am putting on an electric puller fan. Do I need the bolts on the fan pulley or is it pressed on?

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Re: 1500 fan pulley question #2
owensdad74 Brian Morse Ann Arbor, MI, USA 1979 MG Midget 1500 "Squirtle"	Posted: August 01, 2012 06:40PM Registered: 1 year ago Posts: 689

In reply to # 2135158 by armymgdude I am pretty sure I know the answer, but I wanted to get a second opinion before I break something. I am putting on an electric puller fan. Do I need the bolts on the fan pulley or is it pressed on?

I plan to do the same. As far as I've gotten is removing the bolts that hold the fan on and using a bearing puller to pull the fan clutch off. I think it will work from there but someone else here probably knows better.

Are you going to install a thermostat with an override switch? I was thinking about it...

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Re: 1500 fan pulley question #3
armymgdude John Carroll Lawton, OK, USA 1972 MG Midget MkIII "Mira"	Posted: August 01, 2012 06:54PM Registered: 2 years ago Posts: 345

I just ran a toggle switch. I bought a thermostat switch but it did not fit through the tiny radiator. I already had a spitfire water pump, so I just had the regular fan to remove.

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Re: 1500 fan pulley question #4
owensdad74 Brian Morse Ann Arbor, MI, USA 1979 MG Midget 1500 "Squirtle"	Posted: August 01, 2012 07:03PM Registered: 1 year ago Posts: 689

In reply to # 2135258 by armymgdude I just ran a toggle switch. I bought a thermostat switch but it did not fit through the tiny radiator. I already had a spitfire water pump, so I just had the regular fan to remove.

Which fan did you buy? I've been looking at the $30 eBay special but wondered if the tstat switch would work.

I've read that the spit pump is the way to go!

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Re: 1500 fan pulley question #5
armymgdude John Carroll Lawton, OK, USA 1972 MG Midget MkIII "Mira"	Posted: August 01, 2012 07:25PM Registered: 2 years ago Posts: 345

I bought a 10in fan from Advance Auto parts. It was about 60 bucks for the fan and 30 for a relay I don't use. I had to cut half of the shroud off to clear the pulley, but it seems to work. I would know how well, but my temp guage quit yesterday...

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Re: 1500 fan pulley question #6
oldag98 Jeff and Brittany Brackenridge Choctaw, Choctaw, Oklahoma, USA 1965 MG MGB "B" 1976 MG Midget 1500 "Yellow One" 1977 MG Midget 1500 "Dunkirk" 1979 MG Midget 1500 "Parts Car"	Posted: August 02, 2012 09:47PM Registered: 3 years ago Posts: 2,208

The fan bolts to the fan clutch, which is pressed onto the water pump. I removed the fan, its 4 bolts, but left the clutch on the water pump to hold on the water pump pulley.

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Re: 1500 fan pulley question #7
armymgdude John Carroll Lawton, OK, USA 1972 MG Midget MkIII "Mira"	Posted: August 02, 2012 09:57PM Registered: 2 years ago Posts: 345

Thanks, Jeff, but I have a spitfire pump so I have no clutch. I ran it today with no bolts and it seems fine.

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Re: 1500 fan pulley question #8
owensdad74 Brian Morse Ann Arbor, MI, USA 1979 MG Midget 1500 "Squirtle"	Posted: August 04, 2012 07:59AM Registered: 1 year ago Posts: 689

In reply to # 2136202 by oldag98 The fan bolts to the fan clutch, which is pressed onto the water pump. I removed the fan, its 4 bolts, but left the clutch on the water pump to hold on the water pump pulley.

Uh oh- maybe I shouldn't have gotten rid of my clutch! I thought the pulley would stay on without it...

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Re: 1500 fan pulley question #9
79midgetga Jon hawkins winder,ga, USA	Posted: August 05, 2012 10:37AM Registered: 5 years ago Posts: 129

I am using the fan I bought from a MG suppler (they don't advertise on the site so I'm not giving them a plug), it is the same one that moss sells. It comes with a thermostat that just pushing into the fins of the radiator and the fan mounts on the outside of the radiator so I didn't have to cut anything. I also bought the billet pulley's that a guy sold me on ebay that I had to press on to the water pump shaft.

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Re: 1500 fan pulley question #10
kirks-auto robert kirk Davenport, Iowa, Rock Island, Illinois, Clearwater, USA	Posted: August 05, 2012 11:53AM Registered: 4 years ago Posts: 13,090

Keep in mind electric fans pull a lot of amps...
That can lead to problems sitting in traffic...

Regards,
Robert Kirk
kirkbrit@yahoo.com
563 323 1017
Moss distributor UK importer
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Re: 1500 fan pulley question #11
YB Larry Youngblood Englewood, Ohio, USA 1975 MG Midget 1979 MG MGB 2006 Pontiac Solstice	Posted: August 05, 2012 12:03PM Registered: 6 years ago Posts: 866

On my '75 (first year 1500 engine), they were notorious for overheating due to the small "old style" radiator. In '76, they went to the bigger radiator and a couple of other changes to stop the overheating. Anyway, I removed the 1500 water pump/clutch/fan and replaced it with the pre-1500 Triumph water pump and fan. The fan now of course, runs continuously at engine speed and I have had no overheating issues at all. I have a 10" electric fan in front of the radiator that is wired so that I turn it on when I feel it is necessary. Have not had to use it at all since doing the conversion. Some people say that the fan running continuously robs the engine of horsepower. I personally have noticed no changes in performance, only solving heating issues.

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Re: 1500 fan pulley question #12
Bob Braley Robert Braley Tacoma, USA 1975 MG Midget 1500	Posted: August 06, 2012 03:48AM Registered: 1 year ago Posts: 157

In reply to # 2137981 by YB On my '75 (first year 1500 engine), they were notorious for overheating due to the small "old style" radiator. In '76, they went to the bigger radiator and a couple of other changes to stop the overheating. Anyway, I removed the 1500 water pump/clutch/fan and replaced it with the pre-1500 Triumph water pump and fan. The fan now of course, runs continuously at engine speed and I have had no overheating issues at all. I have a 10" electric fan in front of the radiator that is wired so that I turn it on when I feel it is necessary. Have not had to use it at all since doing the conversion. Some people say that the fan running continuously robs the engine of horsepower. I personally have noticed no changes in performance, only solving heating issues.

Larry, At last someone else has posted the real fix for the cooling problem with the 1500.

I used the solid metal 4 blade fan (Moss #434-530) attached to a spitfire Non-clutch fan water pump. I Do Not have an electric fan, nor do I have a need for one. Like you, I do not feel any power loss for street driving.

I also ceramic coated my stock exhaust manifold so more of the heat goes out the exhaust and does not rise toward the carburetor and cooling lines.

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Re: 1500 fan pulley question #13
armymgdude John Carroll Lawton, OK, USA 1972 MG Midget MkIII "Mira"	Posted: August 06, 2012 07:32AM Registered: 2 years ago Posts: 345

The reason I took off my spitfire fan was that I daily drive the car. In traffic at idle, the fan speed is too slow and the temp creeps up. Also, in winter, the car does not warm up enough and I get condensation in my oil. This way I have control over when my fan is needed. I did not have any other problems with the spitfire fan. My electric fan seems to work better for my application.

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Re: 1500 fan pulley question #14
kirks-auto robert kirk Davenport, Iowa, Rock Island, Illinois, Clearwater, USA	Posted: August 06, 2012 08:00AM Registered: 4 years ago Posts: 13,090

In reply to # 2138631 by armymgdude Also, in winter, the car does not warm up enough and I get condensation in my oil.

Sounds like you would benefit from both an oil cooler, to really cool the engine fluids, with an inline thermostat for the winter driving.

Regards,
Robert Kirk
kirkbrit@yahoo.com
563 323 1017
Moss distributor UK importer
Beat or match any retail/delivered quote

How to advertise on this website

Kirk's Auto Parts for your classic British and Italian car. 30 years in business.

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Re: 1500 fan pulley question #15
armymgdude John Carroll Lawton, OK, USA 1972 MG Midget MkIII "Mira"	Posted: August 06, 2012 09:41AM Registered: 2 years ago Posts: 345

I already have both. Don't get me wrong, my car has never got close to overheating, just hotter at idle. I learned the hard way that an oil cooler MUST have a thermostat in winter. I drove lots of days under 30 degrees f, and I had so much water in my oil I thought I had blown the head gasket. It was just that my oil never got hot enough to burn off the condensation. Around here in winter, I may never have to even turn on my fan. My drive one way is less than 6 miles. This really is just to give me more control, not to fix any problem with the car.

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Re: 1500 fan pulley question #16
kirks-auto robert kirk Davenport, Iowa, Rock Island, Illinois, Clearwater, USA	Posted: August 06, 2012 09:45AM Registered: 4 years ago Posts: 13,090

Many years ago it was the custom to change the water thermostat for summer and winter driving. Maybe a 190 in the winter would get your heater working and help with the condensation. Short drives are the absolute hardest on engines for reasons you note.

Regards,
Robert Kirk
kirkbrit@yahoo.com
563 323 1017
Moss distributor UK importer
Beat or match any retail/delivered quote

How to advertise on this website

Kirk's Auto Parts for your classic British and Italian car. 30 years in business.

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Re: 1500 fan pulley question #17
armymgdude John Carroll Lawton, OK, USA 1972 MG Midget MkIII "Mira"	Posted: August 06, 2012 09:54AM Registered: 2 years ago Posts: 345

I may still do that, but I want to see how well my current setup will work. I am still trying to remember days that are not 100 plus... I can't wait until Uncle Sam sends me somewhere else!

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Re: 1500 fan pulley question #18
kirks-auto robert kirk Davenport, Iowa, Rock Island, Illinois, Clearwater, USA	Posted: August 06, 2012 10:05AM Registered: 4 years ago Posts: 13,090

Careful what you wish for. Guam and Alaska are the pits so I am told. Thanks for your service to us! smileys with beer

Regards,
Robert Kirk
kirkbrit@yahoo.com
563 323 1017
Moss distributor UK importer
Beat or match any retail/delivered quote

How to advertise on this website

Kirk's Auto Parts for your classic British and Italian car. 30 years in business.

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