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Harley Riders USA Forums » Harley Davidson Motorcycle Models » Knuckle, Pan, Shovel & Evo » EVO pushrods


Knuckle, Pan, Shovel & Evo Ever popular models.

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Old 02-18-2009, 10:39 AM Top   #31 (permalink)
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96 Wide Glide stinks like an old rag96 Wide Glide stinks like an old rag96 Wide Glide stinks like an old rag96 Wide Glide stinks like an old rag96 Wide Glide stinks like an old rag96 Wide Glide stinks like an old rag96 Wide Glide stinks like an old rag96 Wide Glide stinks like an old rag96 Wide Glide stinks like an old rag96 Wide Glide stinks like an old rag96 Wide Glide stinks like an old rag
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Suuurrreeee Ya are !!
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Old 02-18-2009, 10:52 AM Top   #32 (permalink)
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Old 01-25-2011, 12:59 PM Top   #33 (permalink)
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FLHTom1948 has been a little tightly wound lately!FLHTom1948 has been a little tightly wound lately!FLHTom1948 has been a little tightly wound lately!FLHTom1948 has been a little tightly wound lately!FLHTom1948 has been a little tightly wound lately!
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Well, just punched the new EV 27 cam into this
Big Boyz Head Porting - Evo Compression and Displacement Calculator compression calculator.

Dropped my CR from 8.27 to 1, to 7.76 to 1 . Looks like shaved heads, or new pistons are next on the to-do list !
The compression calculator is very useful: my '92 Evo has stock heads with Jims .650" lift springs, and Wiseco 10:1 forged pistons. I've yet to fire it; i'm thinking with what the comp. calc. tells me, it'll be more like 9.7:1, with the SE-57 i want to try, at least for a little while (I have an Andrews EV-46 that should make things last longer). However, there is no data for what to expect with the new SE heads I've got, other than a comp. ratio higher with flat-tops, and better breathing. I will be curious to know which combo performs better, and which is more useful for street use. I plan to find out the hard way (try both setups myself). I know top-end will be stronger with the SE-57; but will it work well with stock flat-tops and SE-Heads...
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Old 02-17-2011, 09:14 PM Top   #34 (permalink)
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Old 02-17-2011, 11:38 PM Top   #35 (permalink)
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sk8rod stinks like an old ragsk8rod stinks like an old ragsk8rod stinks like an old ragsk8rod stinks like an old ragsk8rod stinks like an old ragsk8rod stinks like an old ragsk8rod stinks like an old ragsk8rod stinks like an old ragsk8rod stinks like an old ragsk8rod stinks like an old ragsk8rod stinks like an old rag
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Man what an Evo,, it just eases on it's stand there like a huge swollen, rippling muscle,,, Throbbing out an arm stretchin 12.7 HP at the crank

I tell ya,, some kinda heavy nut load ya gotta own to swing over that berserko bastard

Huge props lil Ben
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Old 02-22-2011, 12:37 PM Top   #36 (permalink)
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Well, dont know she'd go that high, but your right bud, she would be a handfull for a twinkie rider !!
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Old 02-22-2011, 01:21 PM Top   #37 (permalink)
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hey man,, dont knock yerself down there,, you would top 12.7 no worries
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Old 04-15-2011, 02:20 AM Top   #38 (permalink)
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Because the SE heads bump it up a compression ratio, i bet Ben has been trollin' for Street Bobs! Harley's are, after all, designed for TORQUE, not rpm...
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Old 04-15-2011, 02:30 AM Top   #39 (permalink)
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The compression calculator is very useful: my '92 Evo has stock heads with Jims .650" lift springs, and Wiseco 10:1 forged pistons. I've yet to fire it; i'm thinking with what the comp. calc. tells me, it'll be more like 9.7:1, with the SE-57 i want to try, at least for a little while (I have an Andrews EV-46 that should make things last longer). However, there is no data for what to expect with the new SE heads I've got, other than a comp. ratio higher with flat-tops, and better breathing. I will be curious to know which combo performs better, and which is more useful for street use. I plan to find out the hard way (try both setups myself). I know top-end will be stronger with the SE-57; but will it work well with stock flat-tops and SE-Heads...
To answer my own question: the Andrews EV46 cam works better on the street, because, with SE Heads (the new 1998 ones), the torque is over 80 ft. lb.s at 2500 rpm, whereas with the SE57 cam, torque doesn't start until 3900 rpm. So, a 40% increase in rideabilty with the EV46 (more "streetable"). I would, however, run the SE57 if Sk8 was anywhere in the vicinity, as it's 95hp@6k rpm would give him a good run, given that my bike now weighs only 585 lb.s. . Just sayin', and i really wish i had a bazillion bux to do all the stuff he does...
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