Compression Releases
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Elite HDF Member
Joined: Mar 2006
Posts: 4,722
Likes: 5
From: Biddeford, Maine
Compression Releases
Is it possible to install compression releases with the heads installed on the motor?
My starter is not liking hot restarts now, and I really think compression releases would fix the situation. But, I really don't want to tear apart the entire motor for just that simple install.
I had heard it was possible, but I wanted to check and see what people have to say.
Steve
My starter is not liking hot restarts now, and I really think compression releases would fix the situation. But, I really don't want to tear apart the entire motor for just that simple install.
I had heard it was possible, but I wanted to check and see what people have to say.
Steve
Ultimate HDF Member
Joined: Feb 2006
Posts: 5,939
Likes: 3
From: TX
RE: Compression Releases
Even though it "might" be possible, I would never attempt it on my own engine.
You gotta drill thru into the cumbustion chamber.... I know drill bits are designed to pull metal out, but what about tapping it? Metal shaving will make their way in... now way, dude!
Heads off.... springs???? [8D]
You gotta drill thru into the cumbustion chamber.... I know drill bits are designed to pull metal out, but what about tapping it? Metal shaving will make their way in... now way, dude!
Heads off.... springs???? [8D]
Former Sponsor
Joined: Feb 2006
Posts: 1,879
Likes: 0
RE: Compression Releases
Marine,
You could try the Spyke compression releases with the built in plug, they use ford plugs, I have used them several times on heads that we didnt want to drill and they do work. They had some problems when they first came out, but they got all bugs out, I am pretty sure.
You could try the Spyke compression releases with the built in plug, they use ford plugs, I have used them several times on heads that we didnt want to drill and they do work. They had some problems when they first came out, but they got all bugs out, I am pretty sure.
Tourer
Joined: Jun 2007
Posts: 310
Likes: 1
From: Tulsa, Ok
RE: Compression Releases
Something to throw at you, food for thought. You mentioned heat when its hard to start. GM had alot of problems with starters failing due to heat, nicknamed a gm start. It worked fine cold, but after running a while, getting things good and hot, and then shut off, the exhaust heatsoaked the starter, and solenoid. Resistance increases with heat, blah blah blah. Long story short, they wouldnt start till cooled off. They started selling heatshields for them to help. Fords had remote solenoids, so they werent so prone to it. Curious if your exhaust is running on the hot side towards the starter?
Grand HDF Member
Joined: Feb 2005
Posts: 4,306
Likes: 9,426
From: Twin Cities Minnesota
RE: Compression Releases
ORIGINAL: PhilM
Even though it "might" be possible, I would never attempt it on my own engine.
You gotta drill thru into the cumbustion chamber.... I know drill bits are designed to pull metal out, but what about tapping it? Metal shaving will make their way in... now way, dude!
Heads off.... springs???? [8D]
Even though it "might" be possible, I would never attempt it on my own engine.
You gotta drill thru into the cumbustion chamber.... I know drill bits are designed to pull metal out, but what about tapping it? Metal shaving will make their way in... now way, dude!
Heads off.... springs???? [8D]
I couldn't agree more! What are you runnig for compression? I am at near 10 1/2 to 1 and don't need them. It's all in the tuning.
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Grand HDF Member
Joined: Feb 2005
Posts: 4,306
Likes: 9,426
From: Twin Cities Minnesota
RE: Compression Releases
ORIGINAL: StreetglideOK
Something to throw at you, food for thought. You mentioned heat when its hard to start. GM had alot of problems with starters failing due to heat, nicknamed a gm start. It worked fine cold, but after running a while, getting things good and hot, and then shut off, the exhaust heatsoaked the starter, and solenoid. Resistance increases with heat, blah blah blah. Long story short, they wouldnt start till cooled off. They started selling heatshields for them to help. Fords had remote solenoids, so they werent so prone to it. Curious if your exhaust is running on the hot side towards the starter?
Something to throw at you, food for thought. You mentioned heat when its hard to start. GM had alot of problems with starters failing due to heat, nicknamed a gm start. It worked fine cold, but after running a while, getting things good and hot, and then shut off, the exhaust heatsoaked the starter, and solenoid. Resistance increases with heat, blah blah blah. Long story short, they wouldnt start till cooled off. They started selling heatshields for them to help. Fords had remote solenoids, so they werent so prone to it. Curious if your exhaust is running on the hot side towards the starter?
Steve....maybe you outa try different exhaust.......lol!
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Road Captain
Joined: Aug 2006
Posts: 723
Likes: 3
From: Greensburg Pa
RE: Compression Releases
ORIGINAL: jeepster09
I couldn't agree more! What are you runnig for compression? I am at near 10 1/2 to 1 and don't need them. It's all in the tuning.
ORIGINAL: PhilM
Even though it "might" be possible, I would never attempt it on my own engine.
You gotta drill thru into the cumbustion chamber.... I know drill bits are designed to pull metal out, but what about tapping it? Metal shaving will make their way in... now way, dude!
Heads off.... springs???? [8D]
Even though it "might" be possible, I would never attempt it on my own engine.
You gotta drill thru into the cumbustion chamber.... I know drill bits are designed to pull metal out, but what about tapping it? Metal shaving will make their way in... now way, dude!
Heads off.... springs???? [8D]
I couldn't agree more! What are you runnig for compression? I am at near 10 1/2 to 1 and don't need them. It's all in the tuning.
me to running 10.5 to 1 and no releases.... i did have hard starts when warm but that was before i got a killer sert tune from a tuner down in Georgia
Banned
Joined: Mar 2006
Posts: 8,603
Likes: 10
RE: Compression Releases
i run 10.8 to 1 with the 615/585 cams .... its in the cam timing .... put in the 615 and be done with it ... oh, i have em but dont use em ... and NO, you SHOULD NOT drill and tap the head while on the bike for reasons PhilM stated