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Enya 120 4C

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Garththefacebiter21/08/2012 00:28:24
27 forum posts

I have a used Enya 120 4C

Or R120 4C.

I'm really not sure which.

It came with a load of old aircraft stuff

How do I tell if it's an early 120 4C or the slightly later R120 4C?

I found a test report of the R120 online, but the crankcase inscription visible in the photos seems to read 120 4C so that seems to get me nowhere.

Any obvious external differences?

Or am I going to have to start measuring up carb venturi sizes?

Mark Powell 221/08/2012 06:01:45
430 forum posts

I am curious why it should matter. If it does, Steve Webb, the Enya importer, should be able to tell you.

WOETC (Rob)21/08/2012 06:59:47
47 forum posts
122 photos

The most visible difference is the choke mechanism. The R120 throttle arm/barrel pulls sideways to choke the engine. The 120 has a more conventional design. Is explained more clearly in the review articles below (possibly the ones you already have). I have an as new 20 year old R120 in a 95" Storch.

R120 review - **LINK**

120 Review - **LINK**

R120 Manual - **LINK**

120 Manual - **LINK** & **LINK**

Hope that helps, Rob

Garththefacebiter21/08/2012 13:46:46
27 forum posts


Mine is definately the R120 4C, with the pull-out choke thingy that I wasn't aware of until now.

It does matter that I know which it is, because sooner or later I am going to have to order spares for it.

TBH I'm surprised just how much extra power the R120 is claimed to make (2.1 bhp against 1.6), but that was 20 years ago when the motor was new.

Braddock, VC21/08/2012 16:09:42
1464 forum posts
21 photos

Interesting post, I was interested in getting some enya 4 strokes, especially the 155 but ended up buying saitos instead.

My saito 125 turns a 16x6 on 10% nitro quite a bit faster than the 120r in clarence lee's test but thereagain so it should being a much more modern engine.

I also prefer the enya's camshaft/pushrod position which it shares with early os 4 strokes and, of course, all lasers.

If i ever splash out again, I'll try a 155r.

Are there any of clarence lee's reviews of the 155r out there?

kakariki21/08/2012 18:49:58
12 forum posts

Hi All

The R120-4C exhaust header is held on by a flange and 2 screws; 120 it just screws in. The 120 shows about a 1/8 gap between head and cylinder; the R120 is spaced evenly between the fins. R120 cam box is rectangular; 120 is trapezoidal. The easiest visual clue is the screw-in exhaust. The 120 is a bored and stroked 91 case; the R120 everything is bigger. More power with the R120 because of bigger valves and ports but also a bit heavier. Enya have all the spares for either engine.


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