Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[greentp99]

I have searched all over to see if someone has already posted what actually distinguishes a screaming eagle crate motor from the rest.(i.e a 103 crate from the moco vs 110 crate from the moco) I see lots of general answers but nobody ever points out the actual differences.
I am looking for the actual parts that are different and fall in withe SE class of motor parts like heads(ported? polished? or not) cams? pistons? crank? rods? oil pump? cam chest plate? valves? rods? springs? rocker arms?
are all of these or any of these different?

I guess I can start comparing 2012 road glide motor parts vs a 2012 cvo road glide motor parts in their parts catalogs but i though someone might already know the difference... especially if the moco trolls this forum.


Thanks

Ralph

[timo482]

its a better question for a 120r crate engine. the others are basically stock engines of varying displacement.

to

[05Train]

CVO motors are gunmetal.

[FlaHeatWave]

Some here will tell you, CVO = substandard manufacturing with substandard parts. Barely enough to get you out of the 2 year warranty... LOL

[grc]

Why do you want to know?  If you are considering buying a CVO110 crate engine as a performance upgrade for a 103 equipped bike, because you somehow think the CVO engine is something special, you will be seriously disappointed.  It would be much smarter to take the 103 to a good reputable engine builder and have it built to suit your needs using quality performance parts.

The CVO engines do not use the performance SE parts from the SE catalog.  The cases, flywheel assemblies, oil pumps, cam plates and drives, bearings, etc. are the same as the standard 103 engines.  The CVO does have a larger bore (different cylinders and pistons), and the CVO heads are an open chamber design versus the modified bathtub of the regular engines.  They also have bigger valves and heavier valve springs (not necessarily a good thing for durability btw), but they are not the performance heads you see in the catalog.  Don't forget, the CVO's have to meet the same emission regulations as the 103's.  Also don't forget that the MoCo is cheap and uses the cheapest parts they can on a production bike, and a CVO is a production bike.

Jerry

[dahsen]

.....  and a CVO is a production bike.

That hurts...  But sadly true...

[07CVO.RK]

CVO motors are gunmetal.

Not all are. My '07 is black

[05Train]

Not all are. My '07 is black

Fine.....The good ones are.....

Jerry hit the nail on the head...There's nothing really special about CVO motors.  We've got moderately better heads and a piss-poor compression ratio.  We don't have all the cool S/E stuff from the catalog.

[OBB]

As a learning point on my end I'd like to ask about the cams... I see the 255 for sale all over the net and they have CVO 255 stamped on them. Is that because it's the stock cam for this engine nowadays?

[greentp99]

That's my point... I know there are SE parts in a CVO, like the cams. 255 cams are an upgrade and don't come with the standard motor. I was looking for more info on which parts are actually upgraded from a stock non-cvo motor. I am sure the moco has a list. I will continue to do the comparison of the part numbers in my bike versus a stock bike of the same year. Either way... I will get back to everyone so we can know exactly what gives a motor a screaming designation.

I would have thought this was an easy question given the name of the site.

 

[2k]

When I looked at upgrading my '09 CUSE......Cams & breather......that was it!!

[Steve Cole]

The 255 cams first came out in the CVO engine. The next year they were added into the SE catalog as a SE part. In this case the CVO part turned into a SE part. The Cams marked CVO255 were made to go in a production CVO bike or were removed from one. The SE part is made the same but just isn't stamped with CVO on it. The CVO also came out with the 110 head and displacement size a year later it ended up in the SE catalog again. So do not think that SE parts go into the CVO as it really is the other way around most of the time.

[smiley1049]

 You know that little screw on badge on the cylinder heads that says Screamin Eagle you got it.

[grc]

That's my point... I know there are SE parts in a CVO, like the cams. 255 cams are an upgrade and don't come with the standard motor. I was looking for more info on which parts are actually upgraded from a stock non-cvo motor. I am sure the moco has a list. I will continue to do the comparison of the part numbers in my bike versus a stock bike of the same year. Either way... I will get back to everyone so we can know exactly what gives a motor a screaming designation.

I would have thought this was an easy question given the name of the site.

 

The 255 cams are a production part, and as Steve Cole explained the CVO came first and only afterward did the 255 grind show up in the catalog.  The same thing happened on the older CVO103 and the 253 cams.

It was an easy question, and the answer is simple as well.  The CVO engines are production engines, not some mythical Screamin' Eagle super duper high performance engines.  You need to separate marketing hype and BS from reality.  If you really want to spend hours comparing part numbers between a 103 and a 110 to find differences, feel free to do so.  Those of us who know the true origin of the CVO engines don't need to waste our time to compile a list, since it doesn't matter.  But if you really want to know, there is an easier way to figure it out.  Go to the catalog and look for the kit Harley sells to convert a TC96/103 to a CVO110.  It contains all the parts that are different.  I've attached a copy from the 2013 catalog below, click on it for full size.  The only thing missing from that kit is the new for 2013 change that added a new set of lifters with larger bearings for the roller, which can be found as a separate item now in the SE catalog.

Jerry

[Tiltmaster]

The 255 cams are a production part, and as Steve Cole explained the CVO came first and only afterward did the 255 grind show up in the catalog.  The same thing happened on the older CVO103 and the 253 cams.

It was an easy question, and the answer is simple as well.  The CVO engines are production engines, not some mythical Screamin' Eagle super duper high performance engines.  You need to separate marketing hype and BS from reality.  If you really want to spend hours comparing part numbers between a 103 and a 110 to find differences, feel free to do so.  Those of us who know the true origin of the CVO engines don't need to waste our time to compile a list, since it doesn't matter.  But if you really want to know, there is an easier way to figure it out.  Go to the catalog and look for the kit Harley sells to convert a TC96/103 to a CVO110.  It contains all the parts that are different.  I've attached a copy from the 2013 catalog below, click on it for full size.  The only thing missing from that kit is the new for 2013 change that added a new set of lifters with larger bearings for the roller, which can be found as a separate item now in the SE catalog.

Jerry