Dimensionally smaller battery - need advice on cold cranking amp requirements

[Fjbj40]

While this is all a good idea, I believe you're over thing a problem that may not exist.
Most 1085 owners have no problem starting the bike.
Just modify your headlight lever and run it off when you start up

No need to modify, the 78 has the on/off feature from the factory, for me it did not help, much.

[wymple]

"You are not accounting for the higher compression ratio, the biggest factor applicable here.

Factory compression ratio is much lower, on either a twin or 4 cylinder. Bump it up to 10.25:1 and you will see the problems with 175 CCA!"


You may be correct, if it makes that much difference to go to 10-1 from 9.2-1. My Guzzi cranks pretty easy at 9.2 with large cylinders.

[philosopheriam]

Did you see this????

http://www.thegsresources.com/_forum...78#post2234378

Posplayr,

You are correct, sir - the directions I posted were the wrong ones and the advance graph does not show the retard to which you are referring - the proper directions, i.e. for the Dyna 2000 meant for the GS1000, show the additional 10 deg retard from 0 RPM to around 700 RPM.

I stand corrected.

[Big T]

No need to modify, the 78 has the on/off feature from the factory, for me it did not help, much.

Actually, it didn't

You had to remove the lever and file a bit of it off to allow it to move.


But, my point stands. Going to a 1085 on my 78 never made a difference in starting

[Fjbj40]

All 3 of my 78's had the on/off headlight switch.

[Big T]

The 2 I've had running didn't. They changed the casting for the plastic lever and filled in the slot

I haven't checked the ones in my parts bins

Anyway, easy fix, remove screw, file plastic smooth, reinstall

[Fjbj40]

Interesting, wonder if it an American model vs Canadian/European model thing?

[Big T]

Yeah, it was a federal US thing, headlights on all the time

So, Suzuki recast the plastic switch so you couldn't move it down to off