Carb to motor?

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MotorheadI000I

Seaman
Joined
May 14, 2008
Messages
65
I have a set of carbs someone is trying to sell me as 140. is there any way I can tell. They are for a 140 johnson crossflow, 83. Say 1 5/16 stamped on them.
 
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ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: Carb to motor?

Make sure that they are not choked carbs and that they have the small fittings on the tops for the primer solenoid hoses.
 
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MotorheadI000I

Seaman
Joined
May 14, 2008
Messages
65
Re: Carb to motor?

I see 327389 d1
plates on them that are screwed, no garentee they are the right ones are 393175/6 140 20jh 26jh
327889 d1 maybe...
 
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Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Carb to motor?

Yes, some bubble back crossflows had 1 5/16" carbs. What is it you're trying to accomplish?
 
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GeneH

Petty Officer 2nd Class
Joined
Sep 1, 2007
Messages
109
Re: Carb to motor?

Dhadley asked "What are you trying to accomplish?" This is an important question. Are you replacing a bad set or trying for the famous horsepower jump? I think he may be getting at the idea that changing to a bigger carb may not be all there is to getting to the higher horsepower engine in a series. Many seem to think if you p[ut 140 carbs on a 115, you have a 140. There are other differences besides carbs.
 
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MotorheadI000I

Seaman
Joined
May 14, 2008
Messages
65
Re: Carb to motor?

Yes, I want to jump my power a bit higher. The exhaust was different as well on the 140s, as well as the heads, but the 115 heads are supposed to have better compression than the old 140 heads, though I have both. As for the exhaust my fling has a good exhaust already. So I would like to try a set of 140 carbs. On another note my current fling motor does not have the bubble back which confuses me. But everything else is the same, I think it is 2 years newer then the one I pulled out. What should the bore size be on a set of 140 cross flow carbs.
 
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ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: Carb to motor?

The 1994-1998 Fling 115HP Turbojet came from the factory with the components of the 1984 and older 140HP crossflow. The rating systems changed mid- 1980's.

If your motor was a flatback, then it was a 90HP Turbojet, which Fling stopped using in 1994.

See the TurboJet parts catalogs at the BRP/Evinrude site: http://shop.evinrude.com/

Select TurboJet at the first parts window.
 
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ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: Carb to motor?

The intake ports may be different. The flatback is not milled for the exhaust fillers, but you can run without them. Everything else will transfer over.

There are accessory high performance kits in the 1998 parts listings.

You can also run a power pack with no rev limit but you will want to use the best oil and run mix at 24:1 if you do.
 
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MotorheadI000I

Seaman
Joined
May 14, 2008
Messages
65
Re: Carb to motor?

Ok, Well I guess Ill have to order the exhaust manifold gaskets too as Im switching stuff over. Would it benifit to move the bubbled exhaust over
 
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