Yee-Ha. Stage IV and dyno'd

[RGKen]

Originally Posted by Fatboy

A few brief points:

1. The OP has a much healthier and stronger bike that will be a bunch of fun to ride and he is happy, which is all that really matters!

2. Seacoast HD = Home of the "Happiest Dyno in the US".
The OP can only post the sheet he has and that happens to be from Seacost HD, I've seen multiple sheets from Seacoast on various forums and they all seem to be ~ 10% higher then one would expect for the specific combo and all of the owners say their bikes run great which is the key regardless of the numbers.

3. Repeat item #1 above.

Help me out here because I am trying to learn something about dyno results. I have been told that it is virtually useless to compare dyno numbers that have been tested on different types of systems. Also the geographical location with different temps and humidity also affect the numbers. Another factor is the dyno machine itself. Is it a fairly new dyno or has it seen is better days and parts that are worn?

If any of these factors are true then why would someone in, lets say Washington State, say that another persons results in FL, or wherever, are higher than they should be?

[FLTR2008Trike]

Originally Posted by RGKen

Help me out here because I am trying to learn something about dyno results. I have been told that it is virtually useless to compare dyno numbers that have been tested on different types of systems. Also the geographical location with different temps and humidity also affect the numbers. Another factor is the dyno machine itself. Is it a fairly new dyno or has it seen is better days and parts that are worn?

If any of these factors are true then why would someone in, lets say Washington State, say that another persons results in FL, or wherever, are higher than they should be?

The dyno machine has a correction factor that are suppose to be used by the operator when tuning for elevation and humidity. Some dyno machines are stingy and some are happy with results. Additionally each engine will produce different power based on assembly and breaking.

Engines that are built the same are like fruit, they look the same on the outside but some dont always taste the same on the inside

Best answer is to compare dyno results from others on different forums to get a general idea of the possible results from what your building. Then speak with several engine builders to get the input from what they know

[STG4STREETGLIDE]

what head gaskets do you have?

[doctorharrison]

Originally Posted by STG4STREETGLIDE

what head gaskets do you have?

Since my Dealer mechanic did the install, I don't have a Parts List, but since it was from a HD OEM Stage IV kit (PN#27517-08D), I'm sure it is also OEM product. Perhaps the Parts Dep't at a dealership has a way of getting this off their micro-fiche system.

Good luck!

p.s. Love those 259e cams...

[Torquey]

Your bikes are really nice whatever the numbers are!