103" build
Road Master
Joined: May 2012
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From: Between purgatory and retirement
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Seasoned HDF Member
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From: backwoods
I was under the impression this was about a 103" build and not batteries.
Now derailed into a battery thread? What gives.
7 Years? I think you said you could get 20 years out of a battery.
Buying a brand new battery? I'm wondering if you going for a OEM Harley Battery or an aftermarket one with higher CCA?
Probably should get new battery cables also.
Now derailed into a battery thread? What gives.
7 Years? I think you said you could get 20 years out of a battery.
Buying a brand new battery? I'm wondering if you going for a OEM Harley Battery or an aftermarket one with higher CCA?
Probably should get new battery cables also.
Somebody here posted a link about getting 20 years out of industrial lead acid batteries. They are not subject to vibrations and are a lot bigger an easily go 20 years. Water level maintained
Obviously larger engines need larger batteries. Possibly shorter life out of standard battery in larger engine.
I had hoped to have a thread on boring and building engine and separate one involved in what's involved with crank rebuilding and the options. Since I am working with someone many here send there cranks too.
Any questions feel free to pm me .
Last edited by Rounders; Jan 22, 2024 at 08:02 AM.
Seasoned HDF Member
Joined: Aug 2006
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From: Pennsylvania
Much depends on the starter requirement for amperage and the charging system on the bike.
Expect you will be fine with the same standard battery that came with the bike as long as your charging system is working correctly and all connections are tight.
You are not going up that far from a 96 to a 103 and you stated your keeping the compression lower.
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From: backwoods
Do all stock 103s have acr? As I said at some point you need bigger. I use batteries that won't start Harleys in smaller engine. As I also said I am wondering because I don't know
On carbed bikes you can quickly hit button and decompress, but fuel injection might be harder since they start so quick.
On carbed bikes you can quickly hit button and decompress, but fuel injection might be harder since they start so quick.
Seasoned HDF Member
Joined: Aug 2006
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From: Pennsylvania
No, the 2003 CVO Road King with 103 did not have ACRs.
The 2006 CVO Screamin Eagle Ultra Classic Electra Glide with 103 did not have ACRs.
Many have built 103 engines using the 96 heads without Compression Release.
The 2006 CVO Screamin Eagle Ultra Classic Electra Glide with 103 did not have ACRs.
Many have built 103 engines using the 96 heads without Compression Release.
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Seasoned HDF Member
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From: backwoods
Good to know. But my question is I wonder if batteries will not last as long. Low compression smaller engine might be easier to start with older battery. Where maybe a bigger engine at some point will stress a older battery. What size makes a difference I don't know.
Fuel moto says good tune and hoban brothers say thick head gasket and won't have problems
Fuel moto says good tune and hoban brothers say thick head gasket and won't have problems
Grand HDF Member
Joined: Sep 2017
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From: Dubuque, IA
You're foolish not to put them in now. If you don't need them, your compression is too low.
I seem to recall your projected ccp is 195?
I seem to recall your projected ccp is 195?
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From: backwoods
My first build I said I should have. I did put a bigger starter. Did I need it? I do not know. I would rather do that. I am more concerned about a bike that needs them. I do not want a bike that needs. Stall it drunk with bunch of guys behind fumbling or the cops.
I think ACRs are cool japs been using them for years, but the dinosaur in my says another thing to fail
Guy on another thread has one blow out. And do you have to clean? Though never cleaned one in my chainsaws.
Build is getting away on budget, for an old bike, and I got other mouths to feed. But I realize now is time to do it.
I do suspect I may need to keep my battery up to snuff.
Crew chief for cars, taught me trick, if you think you need bigger starter, crank up a battery charger and see.
I think ACRs are cool japs been using them for years, but the dinosaur in my says another thing to fail
Guy on another thread has one blow out. And do you have to clean? Though never cleaned one in my chainsaws.
Build is getting away on budget, for an old bike, and I got other mouths to feed. But I realize now is time to do it.
I do suspect I may need to keep my battery up to snuff.
Crew chief for cars, taught me trick, if you think you need bigger starter, crank up a battery charger and see.
Last edited by Rounders; Jan 22, 2024 at 04:42 PM.