88 marathon carburetor question

[Awesomesilverado]

If I am going to premix my fuel on my 88 marathon is there any reason I cannot use lets say a carb off a 87 or 89, what makes the 88 carb specific to the 88 only, any one know?

[1989Marathon]

88 has a larger venturi

[Morgan44]

It's bigger, better performance. It will run with others, but I would stick with the stocker. That and the exhaust is what gives the 88, more "juice" than the other 2 strokes.

[93yellowclubcar]

Don and Morgan are right.

The pre-88 Marathons used a Mikuni BV18 carburetor, while the 1988 model used a BV24. That's 18mm vs. 24mm, or a 33% LARGER venturi on the 88. That, paired with the 1988 only exhaust which is MUCH better, gets you some very noticeable power gains on an 88 over the older models. One post I read stated the early models were rated at 9hp, while the 88 was rated at 11hp.

[1989Marathon]

Originally Posted by 93yellowclubcar

Don and Morgan are right.

The pre-88 Marathons used a Mikuni BV18 carburetor, while the 1988 model used a BV24. That's 18mm vs. 24mm, or a 33% LARGER venturi on the 88. That, paired with the 1988 only exhaust which is MUCH better, gets you some very noticeable power gains on an 88 over the older models. One post I read stated the early models were rated at 9hp, while the 88 was rated at 11hp.

Dave's not here...
Dang, beat me to it!

[93yellowclubcar]

Originally Posted by 1989Marathon

Dave's not here...
Dang, beat me to it!

Realized what I'd done as soon as I hit "submit reply"

I've been digging through old posts for the last little while, lots of good stuff from Dave there had his name fresh in my head.

[Awesomesilverado]

That answers my question and I am sure it will help others who may have wondered, Thanks fellers!!!!

[1989Marathon]

Originally Posted by 93yellowclubcar

Realized what I'd done as soon as I hit "submit reply"

I've been digging through old posts for the last little while, lots of good stuff from Dave there had his name fresh in my head.

I'm just messin with you.

[Awesomesilverado]

what about the rev limiter or governor on these engines, someone has taken mine off and done away with it any suggestions?

[93yellowclubcar]

Originally Posted by Awesomesilverado

That answers my question and I am sure it will help others who may have wondered, Thanks fellers!!!!

Have fun with that cart, 88 is the best year in the 2pg Marathon lineup IMO - it's a good base to build upon, plus it's peppier than the rest.

Originally Posted by 1989Marathon

I'm just messin with you.

You know what's funny? Even though I changed it as soon as I could, I knew you'd probably seen it and would say something. If you're like me, you've probably been called worse, huh?