Hey all

ive searched numerous posts about how to take off the flywheel bolt but nothing really saying how to put it back on, the book says to torque it to about 360ft/lbs how can i do that acuratly? im preobably gonna do it the easy way and take my engine to a mazda dealership and have them spin that nut off for me or rent my own impact and i have a small compressor not sure if its got enough cfm for more then like one burst at a time.

but how did you take off and put it back on did you measure? or just guess more or less?

 

The video I have said to get the correct torque you first put the flywheel nut on and torque it with a torque wrench to 150 ft/lbs. and then you get an impact wrenc and tighten it 60 more degrees. To find 60 degrees you just mark on of the "corners" of the flywheel nut and then mark the corner 2 over from that in the tightening direction (marks done with like a sharpie). Then use the impact wrench to tighten it to where the marks line up.

Does that make sense?

 

Heh, you know dDub i should just quit posting and ask you all my rebuild questions

 

It helps that I just went through all this recently and still have it fresh in my head, and on my computer haha.

 

I just put some blue lock tight on and hit mine with my impact gun. It's probably still not enough but so far so good.

 

i took mine off by attaching a basketball pole to the breaker bar and hung on to the pole....it eventually came loose.......and i put it back on the same way............go ahead laugh

(that was on my n/a of course)

 

Hehehe...so you weigh 360 Lbs then? how do you fit in the car?

 

Hopefully a "basketball pole" is a little longer than 1 ft... lol.

Leverage....

--Gary

 

I did the same thing, but was very VERY unsatisfied with the results....

Comparison of 1.5ft Breaker Bar and 5ft Pipe/Cheater Bar



1.5ft breaker bar with a 5ft steel pipe over it... 3 people holding the engine down, 1 person putting all their weight on it (literally hanging suspended in mid-air on it) = broken breaker bar and still a stuck nut





Another casuality, this one from the front e-shaft bolt

 

This isn't hard to do if you have a little physics knowledge. Torque = Force x lever arm. 360 ft*lbs divided by your body weight is how far you would need to stand/put all your weight on the breaker bar to get the right torque spec.

I weigh 180 so this is simple, I need a 2 foot lever and all of my body weight.

 

YEah... and don't try to use anything smaller than 3/4 inch drive, else **** will break.

 

i used an unconventional. take a big hammer and tap it move the ratchet back, tap it, move it back etc (like hard, it worked for me)

 

Werid!!
I used a basketball poll aswell!

I thought for sure I would´ve been the only one..


Anyway yeah a 3/4 drive and a basketball pole works fine.

I always tighten mine by hand when putting them back on.
It´s not that hard to achieve 360 ft-pounds.

 

i just went down to agri-supply and bought a 2-1/8 socket and a 3/4 inch breaker bar thats roughly 2 feet long, so i will need another length of thick tubing and that flywheel holder jig thingy and hopefully it'll be off

 

Too much thinking and too much math...
250lb-ft rated torque wrench, Loctite Red or equivalent
Make sure thread are clean before applying Loctite.
Bang the impact gun for 10 seconds


-Ted

 

I'm with RETed.

 

Why oh why couldn't mazda be NORMAL and just use 6 easy-to-remove bolts like everyone else!

Owning a rotary is like taking a ******* test every time you have to do something. "We're going to make this so convoluted and fucked up, just so you can spend more time trying to figure out how to get it apart!"

AH well, it was a good excuse to buy a 600 foot pound impact gun.

 

haha, i used a long pole too, me and iotus torqued on it using the 60 degree method ddub suggested. It sucked, it took me to hold the engine back on the stand, then my little brother and iotus pushed on the probably 5 foot pole until we moved it far enough, damn it was a pain in the ***

removal was much nicer...i love air tools