What does 108,000 miles look like on the inside!
#1
What does 108,000 miles look like on the inside!
Finally it’s time Baby gets a new top end. I think I’ll be sending the heads and cylinders off to Hammer Performance in Idaho. Going with .020 over, forged 9.5 : 1 pistons.
I ran her for 95,000+ miles with the head breather routed back through the air box… Lots of crud on top of the pistons.
I ran her for 95,000+ miles with the head breather routed back through the air box… Lots of crud on top of the pistons.
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#2
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#3
Finally it’s time Baby gets a new top end. I think I’ll be sending the heads and cylinders off to Hammer Performance in Idaho. Going with .020 over, forged 9.5 : 1 pistons.
I ran her for 95,000+ miles with the head breather routed back through the air box… Lots of crud on top of the pistons.
I ran her for 95,000+ miles with the head breather routed back through the air box… Lots of crud on top of the pistons.
So why the tear down? Just because?
And that’s not unique to Harley engines and really doesn’t mean much. The “crud”.
Post up when rebuilt and what you think of the performance. Pics too!
#4
Why the tear down? She’s using a bit of oil and has lost some of her pep when I roll on the throttle. I’m told I get a puff of smoke from the exhaust at times.
Also, I figure if I rebuild her now, I can ride trouble free for the rest of my life.
I’m looking into rebuilding the swing arm too.
Also, I figure if I rebuild her now, I can ride trouble free for the rest of my life.
I’m looking into rebuilding the swing arm too.
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#5
I would rethink the forged pistons. Forged pistons are more for racing where there is no "Break In" before running. I have always liked / used cast pistons on the street. See what others think?
ETA: I don't think the internals look too bad, especially considering that mileage.
ETA: I don't think the internals look too bad, especially considering that mileage.
Last edited by sbrmike; 11-18-2023 at 07:32 AM.
#6
I would rethink the forged pistons. Forged pistons are more for racing where there is no "Break In" before running. I have always liked / used cast pistons on the street. See what others think?
ETA: I don't think the internals look too bad, especially considering that mileage.
ETA: I don't think the internals look too bad, especially considering that mileage.
Concur with the expense. Just go with what works since it’s not a high performance rebuild.
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#7
I can’t raise the compression without going to forged pistons, but maybe that’s a mistake !?
I honestly don’t really know what I should do,
on the one hand I , like most folks, would enjoy more power. I also value the smoothness and quietness of the stock EVO w/ the EV13 cam I’ve ridden for 27 years.
I honestly don’t really know what I should do,
on the one hand I , like most folks, would enjoy more power. I also value the smoothness and quietness of the stock EVO w/ the EV13 cam I’ve ridden for 27 years.
Last edited by GOGOBECK; 11-18-2023 at 07:57 AM.
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#10
The pistons slipped outta the bores easy enough, I thought the wrist pins would just slide out, but I had to use a drift and tap ‘em… that surprised me.