Hello everyone. I have an s4 water pump pulley that will not line up with the other pulleys. It will break or burn up in minutes. Any ideas? Thanks

 

Is there a washer to put on before the pulley? I placed a washer and it lined up perfectly

 

No washer from factory. Is one of the bolts bottoming out against the hub?

 

A photo would helpful. Not sure how much misalignment you have, but did you reinstall the shims with new pump? https://mazdatrix.com/product/water-...im-all-rotory/ These shims are very thin, so they probably wouldn't lead to much misalignment.

 

What shims are supposed to be behind the water pump? I don’t see any against the the motor?

 

 

Would this shim resolve my issue?

 

You wrote: "What shims are supposed to be behind the water pump? I don’t see any against the the motor?"
Refer to this link:
https://www.rx7club.com/1st-generati...-pump-1080002/

 

Are there any shims behind the pulley , like the one i posted?

 

Bear with me, but where do these shims go? I read the mazdatrix description it states "the twos tuds that do not have a gasket" ... is the "gasket" in that context, in reference to the water pump gasket?

 

Yes - It is referring the the water pump gasket. The shims in question are not for the pulley, but for the water pump itself. They are just extremely thin washers that take up the same space as the gasket so the water pump isn't put on crooked. These go on the bolts that do not have the gasket going over them.

 

Ah that makes a lot of sense. Thank you for the clarification.

 

Any suggestions on a spacer for the pulley?

 

On the pre 89 cars there are two shims that are needed before you bolt the waterpump into place. The 89-91 cars have the steps built into the front side housing and are not required. Good luck

https://mazdatrix.com/product/water-...im-all-rotory/

 

A spacer for the pulley won't resolve the issue. You need to get the two shims that mazda engineered to be installed behind the waterpump itself.

 

How can I identify the year front housing I have?I know the water pump is an s4 but not sure of the rest of the engine. Thanks

 

The 89-91 Front side housing will have the "steps" built in where the water pump mounts.

 

Is the step visible with the pump on?

 

The spacers/shims everyone else is talking about go behind the water pump housing, not the pump itself. If they're missing the pump housing can crack.
Any pulley misalignment they cause is more likely to make it crooked because they're offset.
You may need a shim behind the pulley, but have to make sure the center bore and bolt hole spacing is correct.

 

Sorry maybe its wording, you mean the shims go behind the water pump but on the face of the housing? Or it goes behind the water pump housing on the face of the front cover?

 

Are these the steps?

 

They go between the water pump housing and front iron/side housing.

 

Gotcha. I think i got it figured out. I took a photo for posterity's sake - circled in yellow below.

This is on my 87' NA. The painters tape is covering that gasket where the waterpump/thermostat assembly would sit up against.

 

Also this wording might be confusing, the shims go on the front iron like @j_tso mentioned and the gasket referenced in the quote is the gasket on the front iron that mates between the front iron and the tstat/water pump housing

 

Thanks. My question now is, how to identify which year front cover, I have. If I could see the 89+ front to see the steps vs no step. Thanks again