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Post  wha-tah-hey Thu Dec 01, 2016 12:04 pm

I have an SS .25 S and I see pix of many with "25" cast into the bypass, others with "25" stamped into a milled area below the "SS" marks.
Just curious but does anyone know the story behind the different markings?

Thanks.
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Post  Surfer_kris Thu Dec 01, 2016 12:56 pm

I think the crankcase has been "reused". They used to have the numbers is the casting of the crankcase only, but in later years they use the same crankcase for more then one size when these are close in combustion volumes. I know that they have done it for the .11CX and the .15CX, and for your engine it might be the .25 and .30 SS that share the crankcase and possibly more parts too.

For the Enya .11CX the numbers are casted while the numbers are a sticker for the .15CX (in an area that is recessed where 11 usually is) and they also share the crank etc. The .15 was also released in the last few years, long after the first appearance of the .11 engine. Your .25SS might simple have the crankcase of the .30SS (these exsist with cast numbers) and the numbers are grounded off and then stamped with 25 instead.

There is also a .20 engine now, this one seems to have the crancase of the old .19 and has an even larger ground area, presumably to remove both the numbers and the letts that was on the .19VI or .19X crankcase.
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Post  wha-tah-hey Thu Dec 01, 2016 1:24 pm

Something of that sort was my suspicion, Kris, but the current Enya catalog shows .25s with both markings on R/C (http://www.enya-engine.com/ListAP2CYL_E.html) and only cast marking on C/L engines (http://www.enya-engine.com/ListCL_E.html).
Seems odd that they'd remark .30s when they obviously have and use the plug for the cast .25 mark.
It could be, of course, that the .25s simply outsell the .30s to the point that remarking is necessary to meet demand.
I'm also wondering if the Al venturi insert in mine is possibly an early factory item or an aftermarket product - current C/L engines have a Delrin (or sumpin') insert.
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