ThirdWorldArmy

My friend and I are disassembling a 12a and got one half of the housing off apart. How do you get the crankshaft out so we can separate the housing? Also what is the best thing to use to clean a rotary engine? Thank you for the help in advance.

'84-12A-GSL

You have a crankshaft in your engine?!?! Thats a one of a kind rotary!

They're called eccentric shafts in rotaries

I think you have to take the housings, plates and rotors out before you remove the e shaft.

rotarygod

iTrader: (1)

You need to remove all 16 engine bolts. The big flywheel nut must come off. Of course you also need to remove the front pulley bolt as well. Aside from those, it should come apart. It's pretty straight forward actually. Search online for diagrams.

ThirdWorldArmy

Eccentric shaft. thank you. I'm kinda new to working on the engine itself aside from basic maintenance.

The only thing that is preventing us from taking it apart is the pully bolt. it's stuck

RX7 allnight

front pully bolt. 19mm heat it up with a torch(a must most the time) than use a long breaker bar or impact wrench theres only about 90 ft lbs on it but usually ppl use locktite on it.

djessence

^ as said impact and heat will work

AZRotor

iTrader: (1)

A really good impact should take it off. The only pulley bolts that are really tough are the FD. For them it is either a 6ft breaker bar or the spring shop across the street has a 1inch impact. That always gets them off.

On the older cars we would break them loose in the car, putting a breaker bar that will lock up against the frame. Give it about 6 inch of clearance then hit the starter, disable ignition system first. Will not work on FD's though. I think they use different loctite. Or a gorilla that can't read a torque gauge.

ThirdWorldArmy

Everytime I turn the bolt, the Eccentric shaft rotates. How do I stop it from rotating?

djessence

You need to find yourself a manual and follow the instructions. When dissassembling the engine the e-shaft pulley bolt comes off before the flywheel nut because you need to break the flywheel to get it off. (IIRC, took apart the engine like a month ago so cant remember exact order)

So..vice grips maybe?? --> or something you can grip with, preferably rubber so you dont damage it

ThirdWorldArmy

if I had something to hold the e shaft could I use an impact wrench?

AZRotor

iTrader: (1)

Good points djessence. My choice would be to put the motor back together (just housings) and put the flywheel back on. Think that would be the safest.

Anex 570

I'm sorry to tell you that you have to put on the Flywheel again, get a flywheel stopper and use a really good impact wrench or breaker bar. I used a 3ft 1/2" to break it them off after about 3 months... its not fun at all.

81gen1

just put the endplate back on the e shaft then the flywheel. put a tranny bolt in with a chain around it. then put the other end of the chain on a clutch bolt. that will stop the flywheel. then get the pulley bolt off

djessence

For a flywheel stop you can drill 2 holes in a piece of flatbar and attach with clutch bolts. easy if u have the metal lyin around and easy.

Anex 570

Thats a really good idea. Use extreme caution though, because its on there good and it can be violent.

djessence

Its not too bad depending on the impact wrench. Mine was not a very good one so it just kinda did nothing. Always use cation tho.

EDIT: if you use a bar, MAKE SURE that it is on the side of ground that is the direction of rotation. So when you start impacting the bar doesnt whip up and around and disaster. If its already on the ground in the direction of rotation, not much will happen

FirebirdSlayer666

iTrader: (3)

Yeah like they've said with the flywheel. You will need to heat up the 19mm bolt and use either a long breaker bar or a really good impact gun. The bolts are NOT torqued to 90ft/lbs. They are tightened to 300ft/lbs from the factory IIRC. I broke my 19mm socket trying to break it loose. Had to put an impact socket on a breaker bar and use one of the extendable legs off my engine lift to get about 6ft of leverage

ThirdWorldArmy

Thank you.

Dan_s_young

iTrader: (1)

My impact wrench took mine off in no time (front pulley bolt), mind you alot of people don't have access to snap-on tools so you may be better off using another listed method.

RXnos1200

iTrader: (24)

There's a tool; like a breaker bar with a metal plate and a chain that you can wrap around the pulley which will hold it in place while you use the impact to loosen the bolt. We use that at the shop to take off the main crank pulley bolt. Just another suggestion.

wakeupnow111

i would say take it to a shop u know can get it off with an impact
thats what i did took 10 sec. plus he did it for free
this is where u start to make freinds