Did I Damage My Engine ??
Grand HDF Member
Joined: Apr 2007
Posts: 3,725
Likes: 3,070
From: Brighton, MI
I'm curious if you ever rechecked the compression with the engine warm and throttle open. I have read that the throttle open does not make much of a difference...again just curious. YD
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Supporter
Joined: Oct 2015
Posts: 1,170
Likes: 32
From: Ft.Worth, Texas
Yes I did and yes it does make a huge difference! With the throttle open, I have 148 and 150 compression.
Ultimate HDF Member
Joined: May 2006
Posts: 6,590
Likes: 444
From: Ohio
Much better. Now you know you don't have a bent valve.
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Supporter
Joined: Oct 2015
Posts: 1,170
Likes: 32
From: Ft.Worth, Texas
Yes! Its a relief knowing that the engine is healthy. Ive almost convinced myself that these evo motors are suppose to sound, in the words of the wise TexasHillCountry, like an angry sewing machine 
Seasoned HDF Member
Joined: Oct 2015
Posts: 13,491
Likes: 34,595
From: Pine Flat Dam/South Bay Area, CA
When I hear the normal noises from a evo, I pray the Serenity Prayer & leave it be...:-)
Seasoned HDF Member
Joined: Jun 2010
Posts: 9,332
Likes: 3,873
From: Upstate New York
What I've learned from this is, a noisy Evo motor is a happy Evo motor.
So stop worrying and go for a ride.
Last edited by Uncle G.; Apr 29, 2016 at 08:28 AM.
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I've said this before, but earplugs are your friend.
All the ticking, clicking, clacking, rattling and banging coming out of the motor tends to be at the higher frequencies of the hearing spectrum...exactly the frequencies that the ear plugs cut. All you are left with is the delicious and sublime exhaust note.
Once in a while, I forget to put mine in. The engine on my EG (particularly given how the fairing directs the noise back toward me) is pounding away like the Hammers of Hell. Put the plugs back in, and the order of the universe is restored.
All the ticking, clicking, clacking, rattling and banging coming out of the motor tends to be at the higher frequencies of the hearing spectrum...exactly the frequencies that the ear plugs cut. All you are left with is the delicious and sublime exhaust note.
Once in a while, I forget to put mine in. The engine on my EG (particularly given how the fairing directs the noise back toward me) is pounding away like the Hammers of Hell. Put the plugs back in, and the order of the universe is restored.
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Supporter
Joined: Oct 2015
Posts: 1,170
Likes: 32
From: Ft.Worth, Texas
This whole thing started after I changed to quieter mufflers. Big mistake I pulled the wrap off of the baffles (again) off yesterday for more volume and life is good. Also found a broken hose clamp on the left heat shield just ahead of the muffler that was rattling like crazy.
I pulled the wrap off of the baffles (again) off yesterday for more volume and life is good. Also found a broken hose clamp on the left heat shield just ahead of the muffler that was rattling like crazy.