My first trike, a 1974 Alsport Trisport

[Xhumeka]

1. This engine appears to have oil injection, is it feasible to utilize it in this application

Great find mate! Welcome to the site!

Are you saying you're not using the oil injection system? Are you premixing your fuel then?

I have only read about this, but here is a concern about premixing instead of using the proper oil injection setup:

You may have problems, although I've heard of it being done. The problem is that oil injection is usually done between carb and cylinder. Carb is therefore jetted for pure petrol/air mix. Not to sound too complicated, if carb meters fuel/air at say 50/50 then yours would be mixing petrol/oil mixture with air at same ratio. This would give a leaner mixture as you have added oil to the petrol side of the equation. Premix is also thicker viscosity than straight petrol, so jetting might have to be changed. I don't have personal experience but know the theory.

From: http://uk.answers.yahoo.com/question...7140413AAS1JC8

Also - sometimes old bikes take a LOT of pumping before you can bleed all the air out of them. I thought the same thing as you about a 250R I recently picked up, but after about TWO HUNDRED PUMPS it finally started pressuring up.

[bcredneck]

never use oil injection on a old motor the way you find out it donsent work is you blow your motor its happed to me on my fist 2 storke and i will never trust them again

[4sandgoddess]

WOW I Love it! I just recently got my own 74 Alsport Tri-Sport with the original kohler k340-2ax It is also the street legal model. Mine was left outside with the spark plugs removed to endure the weather conditions at a closed down airport for I don't know how many years. Once i started openin her up I realized that pretty much everything is near new on the inside with the acception of the left cylinder. It had filled up with rain water & rusted in place. After much time & patience got it busted loose and am now having it bored for the .020 pistons I found. a few good places for vintage parts are of course ebay (check daily) & partsreloaded.com I even found original owners manual....and the wiring schematic that I'll add to my album on here....If you come accross anywhere to get actual Alsport parts & would let me know, that would be GREAT!!

[SonicTronics]

Great find mate! Welcome to the site!

Are you saying you're not using the oil injection system? Are you premixing your fuel then?

I have only read about this, but here is a concern about premixing instead of using the proper oil injection setup:



From: http://uk.answers.yahoo.com/question...7140413AAS1JC8

Also - sometimes old bikes take a LOT of pumping before you can bleed all the air out of them. I thought the same thing as you about a 250R I recently picked up, but after about TWO HUNDRED PUMPS it finally started pressuring up.

Though we were having the same issue while doing my buddies 250r brakes only to find out that his brake lever actually wasn't bent at the right angle (wrong lever) to depress the plunger entirely in. After a couple hundred attempts we pushed by hand with a punch on the plunger and it took about 3 pumps to start stiffeneing up. Definitely felt like a complete after that.