Easy start cams vs manual compression releases
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Tourer
Joined: Feb 2017
Posts: 280
Likes: 79
From: Tennessee
Easy start cams vs manual compression releases
Im installing a big bore kit on my 96in twin cam and was about to send the head off for compression releases but starting to consider easy start cams instead. It a 103 big bore and I already have Andrews 48 installed I was looking at the S&s mr 103 cam with easy starts but cant find many reviews on them Ive looked at fuel motos charts just wondering others thoughts on it. And should I go to a thinner head gasket than whats in the kit on either cam?
Seasoned HDF Member
Joined: Aug 2008
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s&s makes some pretty good stuff , have not had any issues with the products i purchased from them.
the only down side to these cams just like others, is compression test have to be done dynamically, aka, engine running.i would suspect a tad more noise while cranking till the weights fully retract. some engines and not necessarily mc engines with easy starts lists minimum cranking compression, aka, my kawasaki fsm lists anything above 50 psi but dynamically it runs 150+. the cams are not fly-weighted, the bump is ground into the cam.
the only down side to these cams just like others, is compression test have to be done dynamically, aka, engine running.i would suspect a tad more noise while cranking till the weights fully retract. some engines and not necessarily mc engines with easy starts lists minimum cranking compression, aka, my kawasaki fsm lists anything above 50 psi but dynamically it runs 150+. the cams are not fly-weighted, the bump is ground into the cam.
HDF Community Team
Joined: Jun 2006
Posts: 12,776
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From: san antonio
I have always used manuals; just a personal choice. Some say they will forget to use them but, to me, that's like forgetting to push the start button. As to the thinner head gasket, do the math for the answer.
Last edited by djl; Nov 6, 2020 at 12:35 PM.
HDF Community Team
Joined: Jun 2006
Posts: 12,776
Likes: 2,607
From: san antonio
Seasoned HDF Member
Joined: Oct 2019
Posts: 10,804
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From: OH
[QUOTE=djl;19517770]I have always used manuals; just a personal choice. Some say they will forget to use them but, QUOTE]
For us (me) dinosaurs still running a carb its just part of turning the petcock on. 😃lol
Anybody who ever spent time on a kick start bike becomes accustomed to a ritual/recipe
For us (me) dinosaurs still running a carb its just part of turning the petcock on. 😃lol
Anybody who ever spent time on a kick start bike becomes accustomed to a ritual/recipe
Last edited by eighteight; Nov 6, 2020 at 03:12 PM.
Road Captain
Joined: Oct 2008
Posts: 699
Likes: 391
From: Fellows. WI
I concur on the manual CRs.
You may forget to use them when the engine is cold.
When it's hot, tho, the starter motor will remind you that your memory ain't as good as it once was...
You may forget to use them when the engine is cold.
When it's hot, tho, the starter motor will remind you that your memory ain't as good as it once was...
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Seasoned HDF Member
Joined: Oct 2019
Posts: 10,804
Likes: 7,444
From: OH
[QUOTE
When it's hot, tho, the starter motor will remind you that your memory ain't as good as it once was...[/QUOTE]
Lol
my knee and or ankle used to remind me to retard the timing..
When it's hot, tho, the starter motor will remind you that your memory ain't as good as it once was...[/QUOTE]
Lol
my knee and or ankle used to remind me to retard the timing..
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Thread Starter
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Tourer
Joined: Feb 2017
Posts: 280
Likes: 79
From: Tennessee
Good points, I had over looked that if I go easy start if I wanna change I would be limited or have to go manual anyway. And I have not heard anything bad about the 48 cam in that engine either thanks for the replies
Banned
Joined: Sep 2009
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From: deland,florida
if sticking with S&S cams,EZ starts are the way to go,if wanting to go with other brands down the road,go with the MCR.if going with MCR`s make sure the installer dosnt just drill the 10mm hole all the way into the chamber (we use a .125 hole) so if the MCR does fall apart,the pieces wont fall into the chamber.also make sure they put them in a place thats easy to get to when its hot,we`re not a big fan of this "jig" thing some without machining facilities use (we put them out in front of the spark plug for super easy access)
