Engine compression
Outstanding HDF Member
Joined: Feb 2009
Posts: 2,005
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From: ID Ho
175-190 would be right in there!
Cruiser
Joined: Mar 2008
Posts: 112
Likes: 1
engine compression
I have 07 Street Glide, stock with stage one, dresser duals, just put 255 cams. Before the work done my compression test was 160 on both cylinders. I'm in Logan, UT about 4500 el. and I have 28000 miles on bike. Pocatello, Id. Harley shop did a dyno last April it was 73HP and 84 tor. Pocie is 4450 el., Mine also has a TFI fuel enhancement on it.
I haven't done a new dyno yet. Too cold here. What do you think about the 160 compression Hog-Doc. You must be near my area.
I haven't done a new dyno yet. Too cold here. What do you think about the 160 compression Hog-Doc. You must be near my area.
Outstanding HDF Member
Joined: Oct 2007
Posts: 3,437
Likes: 15
I have 07 Street Glide, stock with stage one, dresser duals, just put 255 cams. Before the work done my compression test was 160 on both cylinders. I'm in Logan, UT about 4500 el. and I have 28000 miles on bike. Pocatello, Id. Harley shop did a dyno last April it was 73HP and 84 tor. Pocie is 4450 el., Mine also has a TFI fuel enhancement on it.
I haven't done a new dyno yet. Too cold here. What do you think about the 160 compression Hog-Doc. You must be near my area.
I haven't done a new dyno yet. Too cold here. What do you think about the 160 compression Hog-Doc. You must be near my area.
Ultimate HDF Member
Joined: Jul 2006
Posts: 9,335
Likes: 13
From: MA
How do you test engine compression? Pull the spark plugs and use something to measure the pressure?
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Ultimate HDF Member
Joined: Feb 2006
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From: Eastern Washington
If you are trying to determine cylinder compression alone, do a leak down test instead of compression test. Compression test will also take into account starter, or even battery conditions. Leak down test will isolate the cylinder compression only
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Outstanding HDF Member
Joined: Oct 2007
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To do a proper ccp you need a fully charged battery, remove the aircleaner hold the Throttle wide open (on carb hold the slide up) ground both plugs and turn it over until the guage stops climbing.