103" big bore without compression release?
Ultimate HDF Member
Joined: Dec 2007
Posts: 9,254
Likes: 283
From: Lake City, Florida (Native)
Thinking of this myself in the future and plan on adding SE 255's Compensator, Clutch Spring and ACR's while doing it so don't have any wish I had's later on ..
Tourer
Joined: May 2007
Posts: 484
Likes: 2
From: Alabama
Automatic's are very nice benefit, whichever way you decide, trust what most are saying here. Do either the ACR's or MCR's. I have the MCR's and never needed to use both. Only the rear cylinder, do I ever mash!
Outstanding HDF Member
Joined: Dec 2006
Posts: 2,027
Likes: 4
From: Eastern NE
103 stage II SE 255's, no summer experience with this one yet. Had 103 stage II SE 211's on last ride without compression releases and rarely had problems. We do have hot, humid days in NE in the summer.
Thread Starter
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Road Master
Joined: Jun 2007
Posts: 774
Likes: 21
From: Florida
Thanks to everyone for the feedback. I think I'll go with the auto setup. I like my chrome plug covers too much to lose them for the manual valves.
Advanced
Joined: Aug 2010
Posts: 56
Likes: 0
i had them on my 95" motor i was told they only really help to keep the life ouf your starter and other internal parts during start up. But you gotta love the sound, to me that SHHK SHHK SHHK SHHK before start up is worth the extra 100 bucks it cost me during the 95 build
Last edited by Jake707SBFMC; Feb 7, 2011 at 12:17 PM.
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Road Master
Joined: Nov 2009
Posts: 1,218
Likes: 0
From: Yakima WA
When I had the stage II 103 / SE 255 done on my street glide I had MCR installed, works like a champ.
My 06 Street Bob will have ACR (because that's what comes on the SE 120R engine. If I could have picked, I would have gone MCR on the SE 120R also. As noted, MCR are easy to service. ACR you have to pull the rocker boxes to change.
My 06 Street Bob will have ACR (because that's what comes on the SE 120R engine. If I could have picked, I would have gone MCR on the SE 120R also. As noted, MCR are easy to service. ACR you have to pull the rocker boxes to change.
Intermediate
Joined: Dec 2010
Posts: 35
Likes: 0
From: Australia
I'm running a 124" with no releases, S+S now provide easy-start cams (both chain & gear driven) they automatically release compression during start-up then close once running similar system to VVTI car engines have been using.
Also upgraded starter to compufire 2kW (3HP), starts every time without having to fiddle around.
Also upgraded starter to compufire 2kW (3HP), starts every time without having to fiddle around.