2813 to 2836 Clone Swap Compatible?

[elorghestenes]

I want to modify my GMT Master II 2813 movement, to a clone ETA 2836, is this possible?

 

[hanski]

It’s possible. Are you doing the work?

Between the two movements, the hand size and dial feet positioning are not the same. This requires a new set of hands and dealing with the dial feet (can be clipped or you can get a new dial). Easy enough but make sure to pay attention to the lume, cause it’s easy to end up with mismatched lume.

Good luck

 

[KJ2020]

No, the movements have a different stem height. This will cause the stem to have a vertical angle to it which will exert uneven pressure on the crown. As you tighten the crown it will be pressed so hard on one side of the threads that it will become harder and harder to turn and eventually won't turn at all. Unfortunately we are stuck using different cases for different movements.

 

[yodog]

No, the movements have a different stem height. This will cause the stem to have a vertical angle to it which will exert uneven pressure on the crown. As you tighten the crown it will be pressed so hard on one side of the threads that it will become harder and harder to turn and eventually won't turn at all. Unfortunately we are stuck using different cases for different movements.

Correct but that is corrected with a different dial spacer. The cases have the same dimension, so it will fit with a different dial spacer and or movement spacer

 

[KJ2020]

Correct but that is corrected with a different dial spacer. The cases have the same dimension, so it will fit with a different dial spacer and or movement spacer

This would work on a non-date dial but displacing the datewheel further from the cyclops is going to noticeably alter the apparent size of the date, and also make it appear sunken. I don't think the outcome would be worth the trouble.

 

[KJ2020]

I want to modify my GMT Master II 2813 movement, to a clone ETA 2836, is this possible?

What is your reason for wanting to do this? If you just want an independent GMT hand, a better option for you IMO would be to swap in a DG3804, which is a 2813 GMT variant. Same dial feet position, same hands, same dial spacer, same stem height. Easy peasy. About $40.

 

[Mav2000]

Not trying to hijack the thread, but is there any compatible 28,800 movements that one can use instead of the 2813? KJ2020

 

[KJ2020]

There is a high beat 2813, often called a 2813-2 or 4813, but they were never very reliable. Noisy rotor, poor power reserve, cheap painted gears with paint flaking off, etc. Best to stay away.

 

[Mav2000]

There is a high beat 2813, often called a 2813-2 or 4813, but they were never very reliable. Noisy rotor, poor power reserve, cheap painted gears with paint flaking off, etc. Best to stay away.

Thanks, so from what I unerstand there is no replacement, unless I can change the dial and hands as well? would raffles dials be a good place to buy?

 

[KJ2020]

Thanks, so from what I unerstand there is no replacement, unless I can change the dial and hands as well? would raffles dials be a good place to buy?

Raffles dials are OK, but low cost does tramslate to lower quality. About half of the dials I've bought from Ken have had defects. He is always right there with a replacement or refund. I always ask him to QC the dial for me, he never does.

You are going to get a better dial from a TD in most cases, IMO.

 

[Mav2000]

Thanks KJ2020 , but basically it can be done? Or I can use the same dial with dial feet removed and using dial stickers and use new hands?

Would the 2824 even fit properly?

 

[KJ2020]

Thanks KJ2020 , but basically it can be done? Or I can use the same dial with dial feet removed and using dial stickers and use new hands?

Would the 2824 even fit properly?

Sorry what exactly are you trying to do? It's really best to use a case, dial and hands meant for the movement you have. The more you deviate the more issues you can have. 2824 sits higher in case than 2813. Stem hole won't align with the tube without a thicker dial spacer. That moves your DW further from cyclops, increasing mag. Using dial dots can lead to the dial shifting laterally in the case when you work the stem, causing visible wear on the dial. And on and on. Lot of trouble to get 2 more bps.

 

[Mav2000]

Thank you KJ2020 . I think you are right. It's just not worth it for too extra ticks per second. I just wish there was an all in one kit to do something like this.

Thanks for all the help.

 

[Knxvlln]

I saw this thread, I'm also interested in swapping a 2813 out of a 1675 GMT, very nice watch all acceptable but low beat is an issue, accuracy also. I would like to swap a genuine swiss ETA which I would assume has the same specs as the asian copy? What did you ever decide with your project? What watch was it?

Thanks, may be ancient history. Not sure how long ago this was discussed.

Stay safe