Super Jet Differences between 650 and 701 SN (other than engine)

[Dustin Mustangs]

Aside from the engine, what are the differences between a SN 650 SJ and a SN 701 SJ?

Looks like the pump is different. Is the 650 pump still a 144? Any performance difference between the two??

Is there anything else that is different on 650's that would effect performance and/or the use of 701 engine /electronics / pipe???

 

[DirtyJ]

The 701 SN (95) came with the same mid-shaft as a RN, the larger OD one.

 

[Dustin Mustangs]

So pre 94's have a different midshaft and pump?

 

[DirtyJ]

So pre 94's have a different midshaft and pump?

The midshaft is different but I believe the pumps are the same. The 650 pumps have that rubber hose that the spent water exits. The RN pumps dont have those so the 95's might be the same

 

[oxnard111]

Pump is the same, but the reduction nozzle is plastic and has a different shaped stock bilge fitting connection.

Also the CDI is different.

 

[SUPERJET-113]

I always thought the 90-93 SN 650's had the smaller intermediate shaft housing and the 94/95 SN 701's had the larger housing like in the RN, but I bought a 93 SN a few weeks ago and it has the larger midshaft housing in it.

Im thinking maybe I got a real late year 93 and they were just starting to put in the larger housings...
It's either that or, someone did a switcharoo on the tags/title.

 

[oxnard111]

I always thought the 90-93 SN 650's had the smaller intermediate shaft housing and the 94/95 SN 701's had the larger housing like in the RN, but I bought a 93 SN a few weeks ago and it has the larger midshaft housing in it.

Im thinking maybe I got a real late year 93 and they were just starting to put in the larger housings...
It's either that or, someone did a switcharoo on the tags/title.

Probably the old switcherroo

 

[SUPERJET-113]

Ok another thing i just remembered is that arent the 650's have the 2" dia exhaust hose and the 701's have the 2.25"?

Did the SN 701's(94'/95') have the 2.25" dia. ex hose like the RN's have? i cant remember..

This 93 SN i have has 2" exhaust tube out the rear.

 

[Dustin Mustangs]

Thanks for the input on this. I'm looking for some type of project this winter and was thinking sn but with this info and what was said in the other current square thread it looks like it makes more sense to pony up the cash for a rn. Dammit.

 

[smoofers]

Thanks for the input on this. I'm looking for some type of project this winter and was thinking sn but with this info and what was said in the other current square thread it looks like it makes more sense to pony up the cash for a rn. Dammit.

Don't be a typical X bandwagoner.... get a square!

 

[Dustin Mustangs]

The end of this thread has me a bit worried because failed barrel rolls are imminent for this project.

 

[smoofers]

Yeah, but you will crack a non reinforced RN too. Reinforcing is just one of things you need to do if you will be riding surf - regardless of which hull you chose.

 

[SQUARE JOEL!!!]

Yeah, but you will crack a non reinforced RN too. Reinforcing is just one of things you need to do if you will be riding surf - regardless of which hull you chose.

Or foresee lots of 3/4 rolls or back flops......on flatwater

 

[Dustin Mustangs]

Flop is my middle name but I am certainly not afraid of some reinforcing. It will be part of the project regardless of ski choice.