Stage Definitions?

[Mungo]

OK, I've been wondering. I thought I understood the "Stage" upgrades on Harley's. Does anyone have a definitive definition of these different stages?

i.e.

Stage I = Air cleaner, pipes, EFI Remap/Carb Rejet
Stage II = Cams
Stage III = big bore kit
etc...

I've heard different definitions for two and three, plus it seems I've heard mention of higher stages?

[CoolMaker]

Mungo, it depends on who you are talking to.... So many variations,

Stage 1 is usually jetting in carb bikes, downoad in EFI bikes, upgrade air intake, and pipes. This is pretty standard.

Stage 2 is usually cams and next larger inch kit. Obviously with more jetting or EFI mapping as well.

Stage 3 is usually larger cams again, serious head work, and whatever your pocketbook will stand... IE: roller rockers, larger oil pump, case bearings, larger throttle bodies, etc...

Let me remind you that this all differs as to whom you are talking to. IMHO :wink:

[Squirrel]

Good post started here! Thanks

[speed]

If you go by the HD ECM maps their definitions are along these lines:

Factory:
- Stock config

Stage 1:
- Pipes and high flow breather

Stage 2 combos:
- Pipes, high flow breather, big bore kit with flat top pistons
- Pipes, high flow breather, big bore kit with flat top pistons and cams

Stage 3 combos:
- Pipes, high flow breather, big bore kit with flat top pistons, cams and heads
- Pipes, high flow breather, big bore kit with high top pistons, cams and heads

Stage 4 even though you rarely hear it referred to as such:
- Pipes, high flow breather, big bore kit, stroked rods with high top pistons, cams and heads

Hope that helps.

SM

[CoolMaker]

Thanks Speedy, good post.... :wink:

[Blackpearlultra]

Thats some good info. How much would the mods cost?
Just curious.

[CoolMaker]

Originally Posted by Blackpearlultra

Thats some good info. How much would the mods cost?
Just curious.

LOL, BP, just as much a you want to spend.... :wink:

[mrpiff]

Sounds like one of those deals where if I have to ask how much, I damn sure can't afford it!


Excellent thread! I knew what stage 1 was but not the rest! Thanks!

[Blackpearlultra]

Originally Posted by CoolMaker

LOL, BP, just as much a you want to spend.... :wink:

Was at my dealer yesterday and he was pushing this same topic. I have done the stage one with SERT, SE air kit V&H pies & mufflers. I just was not sure how much one would spend on a 110 kit and cams etc.
I told him I wanted to wear out some of the original parts first.

[speed]

The big bore kit itself will not give you a huge boost BP. Your money is better spend on heads and cams.

SM