So I remembered that I saw a receipt for some clutch work with the documents from the rescue rx-7 I picked up last year. Now that I have the engine out and clutch off I'm terrified of ever taking her anywhere to get transmission done. I will post a picture of it later, but it looks a rabid hyena chewed on the flywheel nut (maybe they didn't use a 54mm or not an impact wrench to remove it?).

Thankfully I can easily pick up another flywheel nut, but I'm wondering if the seemingly cosmetic damage that was done to it also has been doing some mechanical damage over time?

 

Funny you bring that up, I have a similarly ugly flywheel nut on the turbo engine. It looks like someone used a chisel to get it on or off, I can't decisively tell. As far as I know it hasn't caused any mechanical issues but who knows. Don't worry about it too much.

 

Only problem that would be had is if they over torqued it (highly unlikely since mazda already torques them to a bagillion ft-lbs anyway), I would be more worried about it being under torqued and sliding on the threaded part of the E-shaft.

 

Thankfully it is really on there so I pray it is very over torqued and don't need to worry about a shatter shield.. I figure I will take the rotary tool to the sharp edges it now has and polish them down when I take it off later this week.

 

back in the day a 54mm/2 1/8" socket was hard to get, so the chisel was pretty common...

 

People couldn't get their hands on a big *** Crescent wrench? The hell?

 

At 300 + lb.-ft. of torque, you'd need a helluva big crescent wrench. They come off pretty easily with a chisel & a BFH, chisel it off & throw it away, buy a new one & torque it back on correctly. Spec. is 289 - 362 lb. - ft.. Using a chisel is common to remove, but you should not try to re use the nut unless it really cleans up well.

Bruce

 

Well I figured standard size Crescent Wrench+Pipe on the end of the handle.

 

I have beat on other things with a chisel and beater but don't ya feel a little poopie a wacking on the little engine with a chisel and hammer ,, kinda puts us back a 1000 years or so .

Make a square socket from 4 pieces of 1/4 x 1 inch flat , fit the pieces around the nut weld them together so they fit nice ,,, weld a piece across the end for a snipe and to keep the side from bulging and take the ****** off .. when you are done you can rent it to all your friends for 10 bucks each . Have a good one

 

Sorry my bad you will need 5 pieces not 4 of 1 inch flat ..

 

I bought a "professionally rebuilt" ("nah bro I haven't got the receipts anymore") engine a while back, and it came with the aforementioned butchered flywheel nut... couldn't really imagine a reputable shop murdering a nut like that taking it off, let alone reusing it, but perhaps it's more common that I realised... engine seems to run alright at least