Fly wheel gear ring

[Nice140Y]

Hi,

I have this fly wheel with chewed up teeth.

Can anyone tell me if I can have the gear ring on this fly wheel taken out and flipped to avoid damage to my starter pinion.

Of course I will also file them down and de-burr them.

Has anyone done this before?

 

 

[banzai510(hainz)]

be honest it dont look bad to me.

 

ask Datzenmike,ggzilla

[Nice140Y]

It's not THAT bad, but I would not want to take that trans apart again.

I want to just do it once :)

[MikeRL411]

The ring gear is heated and then pressed onto the flywheel. To remove it you usually have to drill through just below the root of the teeth, crack it and toss into the trash. Then heat and press on a new ring gear.

[Nice140Y]

Someone told me that you could use liquid nitrogen to shrink the centre of the fly wheel to pop out the gear ring and then flip it.

Ever heard of that?

[ggzilla]

Never heard of that. Heating is the way it is normally done.

 

I would just put a different flywheel on. Or buy a new ring gear.

[datzenmike]

The proper method for mounting a ring is:

 

Heating the ring to 350-400 degrees in an oven will expand the inner dimension, cooling the rest of the flywheel overnight in the freezer will contract it's outer dimension. Quickly slip the hot ring onto the cold wheel and tap in place. DO NOT drop a flywheel. This can loosen or even dislodge the starter ring.

 

Removal is usually to replace, so it is just split or cut off. You may be able to go round and round the outside and drive it off with a hammer and a piece of soft brass, flip it over and use the method above for installing it.

 

As Hainz said, it's not too bad. Clean it up and make sure your starter is working fine. Also is there a chance that the motor was originally an automatic??? If so it's possible (remotely possible) that the automatic spacer may have been left on the end of the crank when the flywheel was installed. This would space the flywheel to the rear away from the starter and may have caused engagement problems. (commitment issues :D)

[banzai510(hainz)]

the automatic spacer may have been left on the end of the crank when the flywheel was installed???

 

it wont go On correctly. I know

[jovial_cynic]

I replaced the ring gear by drilling/torching out the old one, and then putting the flywheel in the freezer and the new ring gear in the oven. worked perfectly.

[Cuts metal like mad]

They make carbide burrs that are intended for fixing the teeth on a gear. Otherwise, as said, just replace the whole flywheel.

[ggzilla]

New ring gear for a 140Y flywheel is on $22 at rockauto.

[Nice140Y]

Thanks guys,

I am having the fly wheel resurfaced and they will attempt to fix the teeth.

I'll let you know.

Anyone know how much a fly wheel would cost me? (Ratsun prices)

This is from a 79 200 SX.

Thanks.

[Nice140Y]

So, should I keep this in mind when I swap out my auto trans with this dog leg?

 

 

the automatic spacer may have been left on the end of the crank when the flywheel was installed???

 

it wont go On correctly. I know

[datzenmike]

When the automatic flex plate (has starter ring on it) is removed be sure the spacer plate is removed from the crank before putting the flywheel on. The spacers will look like one of these:

 

http://i138.photobucket.com/albums/q251/datzenmike/Tranny/Auto%20tranny/transautodriveplatespacer.jpg[/img]"]

 

 

 

WITH SPACER ON:

 

http://i138.photobucket.com/albums/q251/datzenmike/L%20Z%20Heads%20and%20Motors/motorZ24crankauto.jpg[/img]"]

 

WITH SPACER OFF(correct):

 

http://i138.photobucket.com/albums/q251/datzenmike/L%20Z%20Heads%20and%20Motors/motorZ24crankstandard.jpg[/img]"]

[Nice140Y]

Thanks Mike, again.

This is great info to have.

I am just rrying to come up with a list of what i need for this swap and a list of things to look out for when doing it and all of these posts are helping tremendously.