Hi folks. I have been wondering due to certain parts I have been looking at (oil pressure gauges, etc). Is a '95' Sportster Evolution motor considered a big twin? I figured what a better place to ask other than this web site. I would feel stupid asking at a shop. Thanks in advance for your input. :o

Typically a Big Twin is considered the larger model HD's.... Dyna, Softtails, Road Kings, Electra Glides, etc. I assume this is because the engines are seperate from the trans, and the larger displacements. I could be wrong, and Lord knows if I am, we will find out shortly!!! :smoke

Denny, from what I know, you are correct. BT's are generally considered to be ones that have a separate engine and transmission.

That's right - a Sportster is NOT a big twin. Today's big twins are the twin cam motors. Before, the big twins were Knuckleheads, Panheads, Shovelheads, and Evos (maybe that's where the confusion is - the Sportsters and big twins in the 80's and 90's were both called Evos).

That's right - a Sportster is NOT a big twin. Today's big twins are the twin cam motors. Before, the big twins were Knuckleheads, Panheads, Shovelheads, and Evos (maybe that's where the confusion is - the Sportsters and big twins in the 80's and 90's were both called Evos).

Evo sportsters were 883 {54} 1200 {74}
Big twins were EVO 1340 {80}
If I'm wrong I'll be corrected here shortly
Twin cams or Big twins 88 thing of the past now they are 96 and 103? not sure on the last on believe its the Screamin sparrow

Thanks for the help. What would I be looking for when I order a oil PSI gauge? catalog to say sportster? will it go by PSI? I have seen some gauges that went by oil PSI only. Or maybe someone can recommend something? Thanks Again for the history lesson. :chop

The gauge itself will be the same, but the connection point is different. You
need to tee into the pressure sensor up by the oil filter. I believe that the
BTs have a place further back that you can tap into. Also some of the
mounts that attach to the rocker boxes may have the wrong spacing for a
Sporty. They make them for EVO Sportys, I think Arlen Ness has one, for
mega bucks. If you piece meal it get the lowest pressure range you can find.
Some go to 100psi, you want a 60psi but even that's high for what you will
ever see.

Gazza

Thanks Gary for the helpful info.:xlrocks

Is a '95' Sportster Evolution motor considered a big twin?

No, it's considered by many, a girls bike.