What did you do to your Dyna today?
#4231
11-20-2016, 06:13 PM
Finished at last. The carbon fiber splash panel I built a while back (needed due to cutting 5 inches off the front of the rear fender) required a bit of rework as the button head cap screws were hitting the fender, it's really tight back there...
So here's the reworked panel with with countersunk 100 degree panel washers and
100 degree screws from my aircraft hardware stash.
: Mike
So here's the reworked panel with with countersunk 100 degree panel washers and
100 degree screws from my aircraft hardware stash.
: Mike
The following users liked this post:
Nemosengineer (11-20-2016)
#4236
11-22-2016, 07:34 AM
Had poor seal either from leaking heads or who knows what. I'm not the first to experience this with the 106" kit, so rather than go back in with the same pistons I started looking around and the Mahle sound pretty interesting. I'm getting them at cost which is cheaper than pretty much any other pistons, made the decision easier. They can be ran tighter in the bore, about 0.0017"-0.002" piston to wall clearance due to their composition being much more heat stable than regular 2618 forged pistons. Less chance for piston slap. Suburban said their skirt is fuller than the other options out there which should also help with rocking in the bore.
Maybe I got sold on all the techno babble, guess we'll find out
This is direct from Mahle: "These two alloys are similar in many respects. In terms of overall strength the 2618 edges 4032 out by a small margin. Silicon content makes up the main effective difference with the 4032 alloy containing 12-13 percent silicon compared to 2618 alloy having 0.2 percent or less. Silicon reduces heat expansion, while being hard increases wear resistance. The decrease in expansion allows for tighter clearances, reduced wear on both the piston and bore, also resulting in quieter operation. The hard silicon element greatly helps to increase the number of heat cycles the piston can endure before ring grooves and skirts start to distort. This makes the 4032 alloy well suited for a wide range of applications from street performance to upper level sportsman racing. The 2618 alloy is more malleable, allowing it to flex and move under extreme loads further and more frequently before reaching the point of fracture. This gives the 2618 alloy a greater resistance to the shock loads of detonation. The compromise is that the alloy softens at a much faster rate, allowing the piston to distort more rapidly. This makes the 2618 alloy best suited for extreme-duty race applications where the engine will be serviced on a regular schedule. Mahle uses the 2618 alloy for extreme-duty applications or those that have a high likelihood for experiencing aggressive and or frequent detonation. Due to the increased wear resistance and longevity characteristics of the 4032 alloy, Mahle uses this alloy on a wider scale. "
Maybe I got sold on all the techno babble, guess we'll find out
This is direct from Mahle: "These two alloys are similar in many respects. In terms of overall strength the 2618 edges 4032 out by a small margin. Silicon content makes up the main effective difference with the 4032 alloy containing 12-13 percent silicon compared to 2618 alloy having 0.2 percent or less. Silicon reduces heat expansion, while being hard increases wear resistance. The decrease in expansion allows for tighter clearances, reduced wear on both the piston and bore, also resulting in quieter operation. The hard silicon element greatly helps to increase the number of heat cycles the piston can endure before ring grooves and skirts start to distort. This makes the 4032 alloy well suited for a wide range of applications from street performance to upper level sportsman racing. The 2618 alloy is more malleable, allowing it to flex and move under extreme loads further and more frequently before reaching the point of fracture. This gives the 2618 alloy a greater resistance to the shock loads of detonation. The compromise is that the alloy softens at a much faster rate, allowing the piston to distort more rapidly. This makes the 2618 alloy best suited for extreme-duty race applications where the engine will be serviced on a regular schedule. Mahle uses the 2618 alloy for extreme-duty applications or those that have a high likelihood for experiencing aggressive and or frequent detonation. Due to the increased wear resistance and longevity characteristics of the 4032 alloy, Mahle uses this alloy on a wider scale. "
Last edited by mattVA; 11-22-2016 at 07:50 AM.
#4237
11-22-2016, 10:15 AM
Tourer
Nice Pics.
Looks like a good winter vacation destination.
The following users liked this post:
BMCsteve (11-22-2016)
#4240
11-22-2016, 04:27 PM
Will do! Mounting the seat (on my otherwise completely stock FXDB) tonight followed by the bars this weekend. I'll post a pic of the seat later though