What is the big difference in that 2006 Dyna that is different in the following year and also the TC88 in the cruisers?

 

So, is the tool like a 'ridge reamer"? is it designed to shave off a few thousanths for press fit?

 

Gear drive and no more worries if possible.

 

I know the 2006 dyna's were the first to get the hydraulic tensioners.... I have never been into the cam chest of an '06 dyna, so I was not sure how they did it...

I just checked the parts fiche to see what parts they used:

The 2005 Dyna's used:
#25267-99B cam plate (later updated with #25284-11). This plate has the cam bearings and the cams need to be pressed into the cam plate. Uses spring cam chain tensioners.
#25607-99 inner cam chain. This is the link style cam chain.
#9198 inner cam bearings. These are the OEM INA brand bearings compatible with the Torrington B-148, replacement bearing. (7/8" ID, 1-1/8" OD)

These parts listed for the 2005 Dyna, are the same parts used in the other 88" Twin Cam engines. I checked my parts manual for my '01 & '03 Softails.... same part numbers..

The 2006 Dyna's used:
#25355-06A cam plate. This is the cam plate without cam bearings and the cams are just fit into the cam plate by hand. Uses hydraulic cam chain tensioners.
#25683-06 inner cam chain. This is a roller chain.
#9215 inner cam bearing. These are the OEM INA brand bearings compatible with the Torrington B-168, replacement bearing. (1" ID, 1-1/4" OD)

These parts listed for the 2006 Dyna, were all used in the '07 & '08 Dynas. They also appear to use the same part #s for any 96", 103", 110" Twin Cam engine, whether A or B engine. I checked my parts manuals for my '12 limited and '16 Classic.... same part numbers..


So that means that the 2006 Dynas, even though it was still an 88" engine, got the new cam plate, new roller chains, and new (larger) inner cam bearings. That same cam plate, roller chains, and larger inner cam bearings were then used in all the models when they got the 96" engines in all 2007, as well as all subsequent Twin Cam engines.

The only discrepancy I found, that I can't explain, is that the 2006 Dynas list one part number for both front & rear cams. All other years/models/displacements, list two part numbers for cams. The front cam & the rear cam have separate part numbers.... I have no idea why that is...

 

50 miles is a lot of revolutions. I don;t consider that small. But I get sometimes what are you going to do, you accept you are trashing your motor by riding it home. Rationalize it is already junk.

There used to be discussion on whether the oil filter would catch the plastic or you should flush out the bottom end. Myself, I'd flush it. The manual has the path of the oil, I havn't studied it lately though.

 

If you have to much crank runout it may not be possible. 2002 was last year of Timken bearing. Even that doesn't guarantee it. I know guy 2001 shop said to much run out. I did not measure mine, which was bad on part. But 45k later I guess gamble paid off. But it was a big gamble. I didn't really know it minimized the idea at the time, cause so many were doing it.

 

I can't find any reference to that tool in my saved links.... I know I read about it and saved it... just don't know where on both accounts... it was a few years ago...

If you split the cases for any reason, a competent machine shop can bore open the inner cam bearing holes of an 88inch twin cam to the size of the 96"+ twin cams.

Obviously double check measurements before any cutting, but I believe the 88" inner bearings were 7/8" ID, 1-1/8" OD / OEM bearing #9198, aftermarket bearing #B-148

The newer bearings were 1" ID, 1-1/8" OD / OEM bearing #9215, aftermarket bearing #B-168

 

The cheapest way is to just do visual inspections and replace what needs fixed. Even if that is a yearly routine for peace of mind. Its not that hard and only takes a few hours to do. Bikes is a hobby and for me working on them is just part of it. I enjoy wrenching. I don't enjoy laying down the green for parts I don't actually need.
My son has a 02 TC88 and we've had many talks on what to do about the tensioners. I still find myself saying to just inspect them.

 

Cut your oil filters in half for each oil change and look to see if there are any orange flakes in them.

 

Its all what you want. I don't enjoy opening cam chest and pulling rockers. I wanted to just be done with it. I can find enough other stuff that needs attention to scratch my wenching itch.