What exactly is a dyno break in?
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Seasoned HDF Member
Joined: Sep 2009
Posts: 17,148
Likes: 6,171
From: SE Michigan
What exactly is a dyno break in?
Per my previous post, a friend of mine was doing an engine build, dealer was breaking it in on the dyno. Apparently the breakdown occurred at about 250 miles into the break in.
Which got me thinking - Do tuners who do the break in on the dyno run the bike for that many miles?
When I did my build at Fuel Moto Jamie would not have had time to put that many miles on over night, I suspect he (and most) use the 3rd gear 30->60->30 method, which is much quicker.
So whats the deal here?
Which got me thinking - Do tuners who do the break in on the dyno run the bike for that many miles?
When I did my build at Fuel Moto Jamie would not have had time to put that many miles on over night, I suspect he (and most) use the 3rd gear 30->60->30 method, which is much quicker.
So whats the deal here?
Thats way more miles then necessary for a dyno break in. 
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
Mine was just done. I zeroed out the trip when I filled up the tank around the corner from the shop. After break in and all the dyno pulls needed to build a map for a 107" @11.46-1 comp, 9f cams, ported 58tb and hand finished MVA heads, there was less than 100 miles on the trip meter when I picked it up.
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