I kept getting weird intake leak like symptoms but could never track it down totally. I did a compression test following seeing oil in my intake ports. Compression was good but I had the symptoms of rings seal issues, steam vapor coming out of the oil cap when running, erratic rough idle, and my ccp went up when oil was added to the cylinders. So I had my original cylinders (88 inch) machined to fit new pistons and we will try and break this thing in again.

Edit: motor specs
2006 Superglide
95inch running at 9.8:1
Timken conversion to crank and welded crank pin
Andrews 37h cams
Veetwin performance street port heads decked to 80cc with mcrs
Thunderheader
3.9 25 degree injectors (too small)
Wfo larrys lifters with s&s pushrods
Tts (and Powervision.....don't ask) tuned by doc

 

Don't neglect to replace the valve guide seals.

 

Yeah, I was gonna mention this too... Did you notice any burning oil smoke at all from the pipes? If so, was it more prevalent at start-up, or under power? I had a small touch of both...

At any rate, it's a good project! Did you increase displacement beyond what was needed for honing?

I never get tired of looking at pictures of people's motors being taken apart and put back together...

 

I have new heads. Well, semi new. I had veetwin performance port polish and deck a set of heads when I thought it was a valve guide issue. I put them on and still had the same problem.

 

Moving along today. I am awaiting my buddy for a second set of hands to put the cylinders on. Oddly enough I was really not looking forward to putting the piston pin clips in but it went pretty smooth. Notice the black heads in the previous pictures.

I had the motor set up at 9.8 compression with mcr's, 95 inch, and 37h cams. I like this combo and that's what it is going back to although the previous set of heads were acrs

















With the pictures of the previous pistons and cylinders you can see that, I am guessing either the tune was off (probably) and I babied it to much on break in and the walls got glazed plus the rings didn't seat. Second times a charm.

Even though it had ring seal issues the motor is quick. I hope now it will be quicker

 

I only maybe like vet saw a little at startup. My biggest thing that I always saw was a very erratic afr at idle and under low loads. Then the oil in the intake ports. My breathers are vented externally and it always smelled super rich. My plugs looked a little damp. Not wet and not lean but like it was burning a tiny bit of oil.

What I used before was a 95 inch screaming eagle cylinder kit. This time I used my old 88inch cylinders to fit new 95 inch screaming eagle flat top pistons

 

I added more info to the first post for what is in the motor previously and going back in

 

Excellent

 

Transferred sensors onto another throttlebody. Same size but the other was clearenced to fit the decked heads a little too far. I bought the kit

 

I too can never get enough of these threads, thanks!

What does the glazing look or feel like in the cylinders and what does it mean?