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-   -   9/16...11/16 (https://www.mcarterbrown.com/forums/autocockers/318454-9-16-11-16-a.html)

fossilhead 02-16-2019 08:02 AM

9/16...11/16
 
Valve question.

Ok.
I'm coming back into the game after a hiatus.
Is this basically pre 2k vs post 2k?

baconquilt 02-16-2019 09:51 AM

No, pre2k/2k+ had to do with the banjo bolts holding the front block on. 11/16 also has its own front block threads fwiw.



More or less, its 9/16 WGP spec vs 11/16 merlin spec.


The 11/16 doesnt utilize the jam nut either. only the grub screw holding the valve in place. 11/16 is a through bore design vs 9/16 which has smaller bores up front holding the valve and spring in place.

fossilhead 02-16-2019 11:06 AM

Ok.
What is the benefit of 11/16?

Joegel 02-16-2019 11:11 AM

Following out of curiosity.

fossilhead 02-16-2019 11:34 AM

Only reason I ask is, valves are offered in both sizes.

If I'm gonna drop hard earned money.

I want to get the best option.

With as little confusion as possible.

ilivlife 02-16-2019 11:36 AM

A body is either 9/16 or 11/16, a body can not fit both.

woouulf 02-16-2019 11:39 AM

Ok.
What is the benefit of 11/16?

I never thought there was , now I could be wrong but 11/16 availability on the used market is pretty slim and the ease of finding 9/16 AC spec. out weighs any benefits..

fossilhead 02-16-2019 11:45 AM

So...
No cocker tool on 11/16?

ilivlife 02-16-2019 11:55 AM

You can get new in both sizes but like woouulf said hard to find used 11/16.

The only benefit I can think of is flow since there is more area for air to move through in an 11 which means you can lower your operating preassure.

fossilhead 02-16-2019 12:01 PM

So... they changed it from 9 to 11 so they could make a few bucks?

I'd like to think there's a better reason.


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