Hello Folks,
Do you know if the second gen guys use a washer under the flywheel nut? I have worked on more first gen stuff, where a washer is under the nut and then flattened to hold the nut in place.

I looked at the Mazda micro fiche and did not see one. I have posted a not on the second gen area and have not gotten a straight answer, whats the story?
JEB

 

As far as I remember there isnt a washer, but my memory is really fuzzy on that. Give atkins a call, and they should be able to tell you.

 

Thanks, one of the second gens guys came through for me, here is his answer.

" No second gen's came stock with a washer for the flywheel nut. They used a factory equivalent of red (permanent) thread locker and they are torqued to 300+ ft-lbs... no need for a staked washer; they are already extremely hard tyo spin off; you normally have to heat up the nut to break the tertiary bonds in the thread locker before the nut will budge."

Thanks again ~ JEB

 

Heating up the nut (and therefore the eccentric shaft) enough to cook off the loktite sounds risky to the metallurgy of the e-shaft. I would check an official Mazda service manual to see if they recommend that procedure before trying it.

 

When i put my flywheel back one i didnt use any locktite. It wont make a difference when its already torqued that much.

 

heating it up shouldnt have any negative effect on the metal like that. as long as your not getting it red hot, you should be ok. just some heat to let it loosen up

 

we just use a good big air wrench...

 

I wouldn't bet on that...

 

I don't remember any washer on my flywheel(s). Just remember beating the hell out of it with a dead blow till the head came off, flew across the garage then almost knocked a spare carb off the shelf.

There's supposed to be a washer holding the nut on?

 

So who here hasn't used any sort of thread locker? Or for that matter, who here hasn't bent the washer up against the nut?

 

I would definately use loctite and a locking washer. Come on, it takes all of ten seconds when it's sitting on the floor - why wouldn't you do it?

 

yea, the stock nuts a real PITA to get off the tread lock is killer... but a good 3/4 impact gets it EVERY time and i have NEVER seen a washer on a flywheel nut.

 

My Rx2, Rx3, Rx5, and one of my 7s have had washers under the nut.

 

I need help getting my nut off

rofl, had to say that.

Anyways, I have a t2 motor for my first gen swap. I'd like to put a lightened flywheel on there but I'm scared to touch that thing. I don't want it flying off some day.

 

the 12a from a 83 LE i took apart had no washer. I used the racing beat wrench that mazdatrix sells to remove it, worked fine.

 

I've never used a washer or thread locker on mine. I just torque it down to 300-350ft/lbs.

 

I have washers on my REPU flywheels, but I've never bent them.

Over the course of a couple years, one engine has had three different flywheels on it. Each time the nut has been removed and installed with a 1/2" impact wrench. No problems.