MKII water pump pulley broke

2679 Views 127 Replies 9 Participants Last post by JCC, 6 mo ago

JCC

Discussion Starter · 7 mo ago

Was just posting about the alternator and look at what we have here. I was on the freeway and heard something break. Kept going hoping it was not something vital and then could not keep it running after a bit. I guess that is what happens when the alternator is no longer being turned by the belt. What is the pulley I need?

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Jeremy R.

· #101 · 6 mo ago

The three hole triangle gasket I posted is the right one.
Ask the forum or do a search. You may be fine with the 180 but maybe the 160 would be better?

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JCC

Discussion Starter · #102 · 6 mo ago

Jeremy R. said:
The three hole triangle gasket I posted is the right one.
Ask the forum or do a search. You may be fine with the 180 but maybe the 160 would be better?

only concern I would have is some people said the 160 is not good if you need to use the heater which we do at times in Texas

thank you again for your help!

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Jeremy R.

· #103 · 6 mo ago

Then go for the 180. My heater broke as soon as I tried to use it. That's what happens in 35+ year old cars that have been sitting for nearly 2 decades.

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JCC

Discussion Starter · #104 · 6 mo ago

Jeremy R. said:
Then go for the 180. My heater broke as soon as I tried to use it. That's what happens in 35+ year old cars that have been sitting for nearly 2 decades.

having trouble getting mine running since the water pulley broke and I replaced it

hoping to figure it out soon

any reason I should not go for the 192?

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Jeremy R.

· #105 · 6 mo ago

I read a few threads on thermostats. Some say the 160 won't run the engine hot enough to burn off the engine deposits and acids in the oil. Not sure. Just wondered if it'll keep it cooler in the Texas heat and warm enough at night.

I'm running 180 in mine as I said. But hottest day here in the summer was 90. Heated up and ran ok at 34 too last show I took it to this year at the TSC monthly meet.

How is the rad? Have you flushed it yet?

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JCC

Discussion Starter · #106 · 6 mo ago

Jeremy R. said:
I read a few threads on thermostats. Some say the 160 won't run the engine hot enough to burn off the engine deposits and acids in the oil. Not sure. Just wondered if it'll keep it cooler in the Texas heat and warm enough at night.

I'm running 180 in mine as I said. But hottest day here in the summer was 90. Heated up and ran ok at 34 too last show I took it to this year at the TSC monthly meet.

How is the rad? Have you flushed it yet?

I flushed it and started refilling with fluid when I started considering other things to replace like you mentioned

180 is fine with me, but was not sure what downsides there were for getting the 192

pretty sure the electric fan is just connected to run anytime the ignition is on

considering replacing that too along with a thermistor to know when to actually kick on

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Jeremy R.

· #107 · 6 mo ago

Having a thermostatically controlled fan is a must. You want the engine to heat up to operating temperature for maximum efficiency and not overheat. Running the fan always won't let that happen.

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JCC

Discussion Starter · #108 · 6 mo ago (Edited)

Jeremy R. said:
Having a thermostatically controlled fan is a must. You want the engine to heat up to operating temperature for maximum efficiency and not overheat. Running the fan always won't let that happen.

recommendations for a replacement?

I see several on Amazon and likely Ebay

should I get the 192 degree thermostat or stick with the 180?

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JCC

Discussion Starter · #109 · 6 mo ago

2

and noticable coolant leak this morning now that the ground has dried

if I did not get the water pump bolts tight enough, I will have to take the pulley off yet again though I realize that may be best case scenario

rumble.com

'85 Mk 2 Toyota Celica Supra coolant leak

now needing to track this down and maybe I didn't tighten the water pump bolts enough?

rumble.com

uploading a video to Rumble and will post here

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Jeremy R.

· #110 · 6 mo ago

As we discussed earlier are you sure you've got the right bolts in the right holes? There are three different lengths for the waterpump. Are you sure you didn't put the wrong bolt in the wrong hole and it just bottomed out?
Did the waterpump gasket get damaged?

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JCC

Discussion Starter · #111 · 6 mo ago

will have to do some disassembly to see about the gasket and the bolts

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Jeremy R.

· #112 · 6 mo ago

As for your fan. Converting to the Ford Contour V6 dual fan set up with dual relays and dual fuses/fusible links was very popular there for a while. Do a search you'll find more info. If you want the easy way get a thermostatic switch that's rated 180F off/ 200F on.

My waterpump gasket showed up ripped so I used black RTV and let it set up for 24 hours.

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JCC

Discussion Starter · #113 · 6 mo ago

Jeremy R. said:
As for your fan. Converting to the Ford Contour V6 dual fan set up with dual relays and dual fuses/fusible links was very popular there for a while. Do a search you'll find more info. If you want the easy way get a thermostatic switch that's rated 180F off/ 200F on.

My waterpump gasket showed up ripped so I used black RTV and let it set up for 24 hours.

gasket looked fine and I used sealant for it

feels like the leak is at or near the water pump, so disassembling now

any reason I should go for the 180 thermostat over the 192?

appreciate the fan advice

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Funkycheeze

· #114 · 6 mo ago

I'm going to guess you are quite new to working on cars. One thing you need to learn is to do one thing at a time and not pull out the parts cannon. You have done the water pump and now the car leaks and doesn't start. Solve those issues first - a bad thermostat or electric fan wont cause starting issues.

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JCC

Discussion Starter · #115 · 6 mo ago (Edited)

Funkycheeze said:
I'm going to guess you are quite new to working on cars. One thing you need to learn is to do one thing at a time and not pull out the parts cannon. You have done the water pump and now the car leaks and doesn't start. Solve those issues first - a bad thermostat or electric fan wont cause starting issues.

not new to working on cars, but agree I should not get ahead of myself - has been a few years since having a car that needed to be worked on

I appreciate all of the advice and insight

car ran fine as far as I knew until the pulley broke and I had no issues ever starting it

previous owner told me he had just replaced the alternator and I trailered it from Broken Bow OK

was noisy under the hood and my suspicion now was whatever caused the pulley to break

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JCC

Discussion Starter · #116 · 6 mo ago

Jeremy R. said:
As we discussed earlier are you sure you've got the right bolts in the right holes? There are three different lengths for the waterpump. Are you sure you didn't put the wrong bolt in the wrong hole and it just bottomed out?
Did the waterpump gasket get damaged?

here it is: you were right

three bolts are shorter than the other two of this particular size head

which goes where?

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JCC

Discussion Starter · #117 · 6 mo ago

found it..

Rectangle Font Parallel Circle Number

obviously, the two bolts I posted picture of are 25mm and 30mm

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JCC

Discussion Starter · #118 · 6 mo ago

Jeremy R. said:
OK and along that same length (pun intended) you could remove the belt, set the 10mm nut about 3/4 the way along the shaft and wrap a string around all the pulleys take it off and measure it to get your belt length. Used that a few times on stuff sitting for years.

you were right as well about the belt size and looks like the belt that I took off(Gates on top) is shorter than the belt I got off Amazon(Dayco on the bottom)

will work on the adjustments you suggested with the 10mm nut and measure a string for ideal belt size to replace the Dayco belt I ordered

(since I backtracked to a point where the nut is very accessible)

giving some time after tightening the water pump bolts, but I believe the coolant leak has stopped

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JCC

Discussion Starter · #119 · 6 mo ago

measurement is close to 36 3/4" which pretty closely matches the length of the belt that was on the car when I got it

after adjusting once installed, of course

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Jeremy R.

· #120 · 6 mo ago

Hmmm thought there were 3 water pump bolt lengths.
Memory, not so good. That's why I take 1000's of pictures and make notes.

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