2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

main pulley question.

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Old Feb 2, 2010 | 08:57 PM
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main pulley question.

hey, i dont have any pictures to show what i mean but the main pulley ( i think its called) is not alligned with the pulley above it. is this a problem or ? if its a problem then i geuss it needs a rebuild ?
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Old Feb 3, 2010 | 12:11 AM
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the water pump pulley and crank pulley you mean? you can check end play of the engine with a screwdriver, it should barely be noticable by feel, the front bearings would have to be totally destroyed for the main pulley to be that far off and the engine would be exhibiting some extreme issues like metal in the oil and noises from the engine.

the water pump flange could be pressed too far into the pump housing or it could also have walked on the bearing and be digging into the water pump housing but that is unlikely.

i'm just guessing that you installed the incorrect main pulley in the inner most position or have it on backwards or possibly have the incorrect pulley off an earlier series engine(it would have to have been modified though since FBs and earlier have 4 equallength mount holes and won't bolt to an FC crank hub).

pics would help a ton, just sayin..
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Old Feb 3, 2010 | 12:29 AM
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Originally Posted by Karack
the water pump pulley and crank pulley you mean? you can check end play of the engine with a screwdriver, it should barely be noticable by feel, the front bearings would have to be totally destroyed for the main pulley to be that far off and the engine would be exhibiting some extreme issues like metal in the oil and noises from the engine.

the water pump flange could be pressed too far into the pump housing or it could also have walked on the bearing and be digging into the water pump housing but that is unlikely.

i'm just guessing that you installed the incorrect main pulley in the inner most position or have it on backwards or possibly have the incorrect pulley off an earlier series engine(it would have to have been modified though since FBs and earlier have 4 equallength mount holes and won't bolt to an FC crank hub).

pics would help a ton, just sayin..


ill get pics tomorrow, it just scared me when i looked at aaron cakes page about destroyed rotaries and they showed a picture of one that was not alligned . also im not too sure if it is a swapped piece but pictures will help tomorrow, also whats the worst case scenario ? rebuild ? maybe this is why my car wont run possably ?

edit: i didnt install anything , but it might be the wrong one since the previous owner was a total idiot .
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Old Feb 3, 2010 | 01:14 AM
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you'll have to give a little more history like this is a fresh rebuild by you or someone you know, reputable shop? never fired up? fired up then quit running? made noises before it shut down? you pulled off the hub to do a front cover or oil seal replacement?

need to know any reason why the e-shaft would be out of position, otherwise assume it is just the pulley is inccorect or is installed incorrectly.
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Old Feb 3, 2010 | 07:50 AM
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he said he pulled the engine out of a parts car. it sopposedly has 50 ,000 km on it , it does look like some stuff he changed on it , like the filler neck for the coolent isnt rusty but the rest of the front cover is , and pics in a little bit . im in school now
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Old Feb 3, 2010 | 10:54 AM
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Originally Posted by Karack
you'll have to give a little more history like this is a fresh rebuild by you or someone you know, reputable shop? never fired up? fired up then quit running? made noises before it shut down? you pulled off the hub to do a front cover or oil seal replacement?

need to know any reason why the e-shaft would be out of position, otherwise assume it is just the pulley is inccorect or is installed incorrectly.

Yeah, I'd check the main 3 piece pulley, make sure it's all together correctly.
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Old Feb 3, 2010 | 02:15 PM
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Looking at the attached jpg, which pulleys do not align with each other.
Attached Thumbnails main pulley question.-pulleys.jpg  
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Old Feb 3, 2010 | 03:41 PM
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Originally Posted by HAILERS
Looking at the attached jpg, which pulleys do not align with each other.
i believe it is the green one ( im 100 positive now since thats the only one underneath the alternator ) but yea its not aligned correctly with the red one below it .
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Old Feb 3, 2010 | 05:52 PM
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by the way the green pulley in the picture is not on a angle it is directly above the red one.
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Old Feb 3, 2010 | 07:22 PM
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How many pulley grooves are in the bottom pulley? Three? Or two? Or?

Maybe someone put the bottom pulley on upside down backwards (or flat wrong). It's hard for me to believe someone would put the water pump pulley on assbackwards. Then again......

Yeah, memory says the pulleys are not quite at the angle in the jpg out of the FSM. I could be wrong about that, I suppose.

The attached jpg out of the FSM might help. Pay no attention to any of the words on that jpg. They are meant for another thing.
Attached Thumbnails main pulley question.-casfive.jpg   main pulley question.-timingmarks.jpg  
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Old Feb 4, 2010 | 12:39 PM
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only other thing i can think of is your water pump pulley does not match the water pump for the series of car or you got the wrong water pump.

the center nose on the water pump is larger on the series 5 than the series 4 so someone might have tried to sandwich it on there and it isn't actually butting up to the mating surface.
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