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#553244 - 11/01/19 04:09 PM M3W - Harley
Gambalunga Offline

Member of the Inner Circle

Registered: 03/09/11
Posts: 10964
Loc: Mandello del Lario, Lake Como,...
Given the number of problems with the unbalanced S&S engine, and that the Liberty ACE used a Harley engine, I wonder how practical, and/or easy, it would be to swap out the S&S for a Harley engine idea
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#553247 - 11/01/19 04:22 PM Re: M3W - Harley [Re: Gambalunga]
2Sharp Offline
L - Learner Plates On

Registered: 20/10/16
Posts: 131
Interesting but I always have had a view that S&S engines are more desirable than Harley engines in general. Maybe others have a bigger issue but I don’t notice excessive vibration or anything. Other than I wonder why the engine does not have more horsepower and wish there was more protune tuners around I am perfectly content with the engine. Others may have a different view but would hate for people who are thinking of buying a Morgan 3 wheeler to think there is an issue with the engine.

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#553264 - 11/01/19 04:55 PM Re: M3W - Harley [Re: 2Sharp]
Chris99 Offline

Talk Morgan Expert

Registered: 17/07/13
Posts: 2523
Loc: West Sussex, UK
I agree, I love the S&S which makes up a large part of the character of the M3W.

I recall reading (probably form Mr Dron's excellent book) that MMC originally approached Harley for the engine but HD wanted a minimum order for way too many engines and suggested they go to S&S instead.
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#553275 - 11/01/19 05:38 PM Re: M3W - Harley [Re: Gambalunga]
KenShapiro Offline
Has a lot to Say!

Registered: 31/10/15
Posts: 1440
Loc: Baltimore, Maryland USA
Long time Harley owner here. Beware what you wish for.
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2016 Smith & Stankos Special
10,000 miles.

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#553288 - 11/01/19 06:44 PM Re: M3W - Harley [Re: Gambalunga]
Redfate Offline
Just Getting Started

Registered: 30/01/18
Posts: 82
Loc: London England
Hi, I'm also a long time Harley owner. I love the Harley engine but have always believed that S&S were even better?
If you are thinking of try to improve performance this guy knows both in engines inside out and comes with very high recommendations in the Harley world.

http://www.fastlaneheadwork.co.uk/


Edited by Redfate (11/01/19 06:45 PM)
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#553339 - 11/01/19 11:06 PM Re: M3W - Harley [Re: Gambalunga]
3Gs Offline
Just Getting Started

Registered: 11/02/18
Posts: 55
Loc: Seattle, WA.
After driving Liberty ACE#10 I can say that the Harley 120R B Motor (with dual counter balances) is smoother than the S&S. Only real noticeable differences (other than more power in the Harley, but it's bigger and race tuned) is that the S&S shakes the M3W from RPM to idle muh more and the side mirrors on the M3W are not really usable because they shake too (maybe that's due to their mounting?). Vibration difference otherwise, from both at speed, is trivial IMO; but then again I have not had / driven my M3W in a while.

The M3W reliability issues I have are not the S&S lump but the Morgan bits bolted onto the back end if it.

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#553340 - 11/01/19 11:09 PM Re: M3W - Harley [Re: Gambalunga]
3Gs Offline
Just Getting Started

Registered: 11/02/18
Posts: 55
Loc: Seattle, WA.
I'll add that the S&S, to my understanding, is an intended Harley motor 'upgrade', so that should mean that a swap should not be too difficult.

Granted this is all conjecture and I don't know if the S&S X-Wedge lump is the S&S path for replacing a Harley or something else...


Edited by 3Gs (12/01/19 12:14 AM)

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#553348 - 12/01/19 12:10 AM Re: M3W - Harley [Re: Gambalunga]
2Sharp Offline
L - Learner Plates On

Registered: 20/10/16
Posts: 131
Very nice Harley engine in the liberty you have. My only disappointment with the S&S engine we have is it should have come with the stage 2 cams and tune. It is much smoother, better running engine that pulls the entire RPM range. When I just had the stage 1 with no tune the 2k RPM range was not as lively as it is now.

The liberty is very cool but unfortunately not a lot of them out there for the rest of us.

S&S has other engines that if I was going to swap I would look at those first

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#553451 - 12/01/19 03:11 PM Re: M3W - Harley [Re: Gambalunga]
Michael H Offline
Has a lot to Say!

Registered: 29/04/13
Posts: 1136
Loc: Southern Vermont
Overall impression added to a ton of experience is that the S&S is a seriously good engine. It's all the bits that are attached to it that have given me grief!
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What's your mileage? Who cares. Is it practical? See #1. What happens when it rains? You get wet.

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#553456 - 12/01/19 03:56 PM Re: M3W - Harley [Re: Michael H]
nippymog Offline

Has a lot to Say!

Registered: 03/08/13
Posts: 1217
Loc: Cheshire, UK
Originally Posted By Michael H
Overall impression added to a ton of experience is that the S&S is a seriously good engine. It's all the bits that are attached to it that have given me grief!


+1

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