Another Harley Hop-Up Ho-Hum
in [Motorcycles]
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From: tomorrow on 7 Aug 2010 12:04 This evening I'll be taking my buddy Tom out to Winchester H-D to pick up hs newly modified 2008 Electra/Street Glide[1]. It has new pistons, heads, cams, and exhaust. It'll be interesting to compare his new-wave 103 against my old-school version. Looking forward to the back-to-back test ride. [1] Electra Glide Standard which the previous owner modified to (MOSTLY) look like a Street Glide
From: don (Calgary) on 7 Aug 2010 12:17 On Sat, 7 Aug 2010 09:04:44 -0700 (PDT), "tomorrow(a)erols.com" <tomorrowaterolsdotcom(a)yahoo.com> wrote: >This evening I'll be taking my buddy Tom out to Winchester H-D to pick >up hs newly modified 2008 Electra/Street Glide[1]. It has new >pistons, heads, cams, and exhaust. It'll be interesting to compare >his new-wave 103 against my old-school version. > >Looking forward to the back-to-back test ride. > Of course we are looking for a complete review/report including pictures and pdf's of the dyno sheets. ;-) Correct me if I am wrong but after new pistons and heads do you not have to break that motor in before pushing it too hard? Or will Winchester H-D break it in on the dyno? Mike at Speedtwins in Calgary tells me his dyno can simulate variable loads and he can do the break in for piston and head work before he gives the bike back to his customers. For a fee of course.
From: tomorrow on 7 Aug 2010 14:28 On Aug 7, 12:17 pm, "don (Calgary)" <hd.f...(a)telus.net> wrote: > On Sat, 7 Aug 2010 09:04:44 -0700 (PDT), "tomor...(a)erols.com" > > <tomorrowaterolsdot...(a)yahoo.com> wrote: > >This evening I'll be taking my buddy Tom out to Winchester H-D to pick > >up hs newly modified 2008 Electra/Street Glide[1]. It has new > >pistons, heads, cams, and exhaust. It'll be interesting to compare > >his new-wave 103 against my old-school version. > > >Looking forward to the back-to-back test ride. > > Of course we are looking for a complete review/report including > pictures and pdf's of the dyno sheets. ;-) > > Correct me if I am wrong but after new pistons and heads do you not > have to break that motor in before pushing it too hard? Or will > Winchester H-D break it in on the dyno? > > Mike at Speedtwins in Calgary tells me his dyno can simulate variable > loads and he can do the break in for piston and head work before he > gives the bike back to his customers. For a fee of course. Generally, the engine has to be broken in (again) after new heads, pistons, rings. My racebikes were ALL broken in on the dyno (via dynotuning for performance, not via some breaking-in regimen), and I've never had any problems with them afterwards, even engines that went back to the street from the racetrack. I've broken in two stock H-D engines and two hopped-up H-D engines on the street without any special precautions except 1) not lugging the engine, 2) no sustained high-rpm running, 3) no sustained single engine speed riding, and 4) no super-hot temperature stop-and-go low- speed riding. I haven't observed any particular engine speed limit or road speed limit. They've all done okay. I wouldn't ever pay anyone to break an engine in on the dyno. I think that would be a waste of dyno time and my money. But I can understand selling such a service if there are people willing to pay for it.
From: don (Calgary) on 7 Aug 2010 15:18 On Sat, 7 Aug 2010 11:28:02 -0700 (PDT), "tomorrow(a)erols.com" <tomorrowaterolsdotcom(a)yahoo.com> wrote: > >I wouldn't ever pay anyone to break an engine in on the dyno. I think >that would be a waste of dyno time and my money. Given it would take me less than a couple of days to break it in myself I would agree.
From: Snag on 7 Aug 2010 15:59
don (Calgary) wrote: > On Sat, 7 Aug 2010 11:28:02 -0700 (PDT), "tomorrow(a)erols.com" > <tomorrowaterolsdotcom(a)yahoo.com> wrote: > >> >> I wouldn't ever pay anyone to break an engine in on the dyno. I >> think that would be a waste of dyno time and my money. > > Given it would take me less than a couple of days to break it in > myself I would agree. While I agree on the waste of a dyno break in , a lot depends on just how tight that new motor is . When I fitted new pistons in the ol' shovel , I used KB's and had them at the low end of the clearance spec . Took all of a thousand miles before it felt "broken in" to me . Too bad I didn't do as well on the valve guides , but then again it made a perfect excuse for buying S&S heads ... which I also babied for the first thousand miles . It was worth the effort - to me . -- Snag Wannabe Machinist |