Compression release question
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Cruiser
Joined: Dec 2012
Posts: 101
Likes: 0
From: Philly
Compression release question
I had a big bore, cam and head work done on my 2000 fxdx. They put a compression release in and I heard to only use it when it's hot out or it could cause damage. What do you guys know about the subject?
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
Someone has been filling your head with BS.....use them especially on cold starts. Sometimes you don't need to use them if you have just stopped for gas or a slash but every time would be the best option.
Road Warrior
Joined: Apr 2007
Posts: 1,525
Likes: 4
From: Johnson City TN U.S.A.
This is interesting, since you mentioned head work.
I've been building Harley race engines since the 70's and have an idea what those guys were thinking, but if that is the case they were questioning their own work. . .
When you mill heads for racing the moment of horror is when you start the engine each time. Your domed piston is closer than it will ever be.
I've been building Harley race engines since the 70's and have an idea what those guys were thinking, but if that is the case they were questioning their own work. . .
When you mill heads for racing the moment of horror is when you start the engine each time. Your domed piston is closer than it will ever be.
Grand HDF Member
Joined: May 2007
Posts: 3,870
Likes: 499
From: Alberta
Use 'em every time you start; that way it becomes a habit and you won't be going "aw sh*t!" when you hear a hot kickback...if they're the HD releases; listen if they close too quick...there's a bit of a design flaw that lets them do that sometimes.
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Stellar HDF Member
Joined: Jan 2013
Posts: 2,464
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From: Rouses Point, N.Y.
I all ways push mine in hot & cold. funny thing I tried it a couple days ago cold. and it turned once and starter drive kicked out. so if releases are install use them!
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