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[RedDevil]

Because 0905 does?      (Sorry, couldn't resist that.)

 

[art2001]

Picked up the bike today. On the ride home the engine sounded like it did b4 the upgrade, power feels good.    However now the radio isn't working right but that is minor compared to mechanical issues.    I will be trying to put some miles on over turkey day break.
Thank you for all the good info and will keep you posted.

[tennisman]

"Does anyone know why program 0906 doesn"t include new heads?
-HK"

I understand that the other issue is valve guide fit and the bikes who get the 0906 kit already have the new valve guide design.

T-man

[RedDevil]

"Does anyone know why program 0906 doesn"t include new heads?
-HK"

I understand that the other issue is valve guide fit and the bikes who get the 0906 kit already have the new valve guide design.

T-man

That would seem to be the logical assumption, however, the 07 SE Road Kings had the exact same 110A engine that the 07 SEUC had, same heads, everything, and they're not in the 0905 campaign.    The only explanation I've heard, that somewhat makes sense, but not really, is that because the SEUC has the lowers, its rear cylinder get hotter than the free-flowing SERK, therefore the heads got hotter.  I dunno if that's the reason or not,  but that's the MoCo's story and they're sticking to it.

 

[tennisman]

So, if not the valve guide, then what is the diff in the heads?

[ice6900]

The only explanation I've heard, that somewhat makes sense, but not really, is that because the SEUC has the lowers, its rear cylinder get hotter than the free-flowing SERK, therefore the heads got hotter.

Thats the only explanation that makes any sence 2 me!

[tennisman]

??  Then what is the point of replacing the heads - it's not going to change the fact that the rear cyl is going to run hotter than on non-lowers bikes.  What the new head have that's not in the old head (cept maybe some carbon!)

[ice6900]

doesnt the new head have a circlip on the valve guides, to stop them falling down?  there are some pics on another thread but i couldnt find it.

[Gone Fishin']

The only explanation I've heard, that somewhat makes sense, but not really, is that because the SEUC has the lowers, its rear cylinder get hotter than the free-flowing SERK, therefore the heads got hotter.

Thats the only explanation that makes any sence 2 me!

I think you are completely right, even if the factory story is, well, strange. When I had the upgrade done on my '07 SERK I received new heads as well. It was a dealer courtesy, because at that time no one in Europe had any real documentation, at least not as much as was already available on this site. That is one of the reasons I started a thread specific to the parts used. Unfortunately that thread got hijacked and the good information is now buried under a lot of other comments.

Ride safely,
Louis
... still no delivery date on my '09 SEUC!!

[ice6900]

Louis
... still no delivery date on my '09 SEUC!!

u dont need it now till march anyway  do u?  No point havin it now n not riding it much till march, save ur self 4months warrenty

[Gone Fishin']

u dont need it now till march anyway  do u?  No point havin it now n not riding it much till march, save ur self 4months warrenty

Your right about the warranty, however I want to break it in in February to have it tuned and ready by March. Last year I had 4.200 km by the end of March on the '08 SEUC. We'll see. I spoke to the dealer today, still no word.

Ride safely,
Louis

[grc]

??  Then what is the point of replacing the heads - it's not going to change the fact that the rear cyl is going to run hotter than on non-lowers bikes.  What the new head have that's not in the old head (cept maybe some carbon!)

The new head assembly comes with the new valve guides, as well as the new ACR's.  That's the only difference.  

The new guides have a retainer circlip that will keep the guide from dropping and screwing up the engine.  That has happened on some 110's, obviously in large enough numbers that H-D thought they should redesign the guide.  In reality, if the interference fit of the guide to the head is done properly, the clip isn't needed.  Think of it as insurance for lousy quality control.

Jerry

[RedDevil]

??  Then what is the point of replacing the heads - it's not going to change the fact that the rear cyl is going to run hotter than on non-lowers bikes.  What the new head have that's not in the old head (cept maybe some carbon!)

T-Man, the only thing that I know that the new heads have is a retaining clip about half-way up the valve guide.  Not really sure how that's going to work.  All I know is that the tech said it's a lot nicer doing the ACR replacement in the 0905 campaign than the 0906 because the heads come with the ACR's already installed.  He was happy to see that because he said it's not necessarily hard to do, but time consuming. 

   

[johnchalker]

Just got my bike back from the recall.4 weeks it took and it was delivered back by van and no cost to me.Not being mechanically minded it sounds ok and when the weather is ok i will put some miles on it to make sure it rins ok.

[ice6900]

that was quicker than expected eh John,  i have the same problem cant put many miles on cus of da weather.