What kind of performance am I going to get??

[Bobert540]

I have a 92 SN Superjet that is mainly stock besides intake grate, rideplate and prop.

I bought a Coffman Sizzler pipe this past fall and I will be putting it on soon.

In the meantime I plan on sending the Head(Mill Head), Carb(Circuit Upgrade) and Intake Manifold(Manifold boring) to Group K to get that work done.

What kind of performance will I get out of these mods? Do you have to change spark plugs to a different size when the head is milled?

Thanks!

 

[Big Kahuna]

you should see some good overall gains with all of that. I do not think you will be disappointed. change your plugs from BR7hs to BR8's

 

[Bobert540]

Right now I am using B8HS....Should I just stick with those once I put the Milled head on?

 

[Bobert540]

Also would the Wet Wolf Cone help as well?

 

[2006superjet]

yes

i just got the stubby cone and it was a great lil improvment. well worth the 50$

and heck they sell used all day long on ebay around 44$ try it out if you dont like it then sell it-return it.

i notice it cavitated a lil more and a lil less of top speed but i love the low end it gave. not much but 50$ isnt bad.

 

[brett]

modding the 650 is fine if you keep it cheap. i know group k does good work but keep in mind that 61x 701s are goinfor around $400 complete! even less as a block if you look. much better platform. I just went through this with my 91

 

[kurtwolff]

Shot you a PM, Protec head and WetJet 46 FTW!!!!

 

[Bobert540]

This all I am pretty much going to do to the ski for awhile. I just wanted to add some performance to it and down the road I may drop in the 701. I already have the pipe so i figured the other upgrades would make a nice improvement along with the pipe.

 

[brett]

This all I am pretty much going to do to the ski for awhile. I just wanted to add some performance to it and down the road I may drop in the 701. I already have the pipe so i figured the other upgrades would make a nice improvement along with the pipe.

you could make the pipe work but either it'll be fun.

 

[Bobert540]

I just want to be riding more then wrenching, since my time is going to be limited more this summer do to work lol

 

[Bobert540]

How will the reliability of the ski be affected by putting all of those mods on? Since it will still be on pump gas I presume as long as it is jetted right I should be ok....

 

[Duster8]

modding the 650 is fine if you keep it cheap. i know group k does good work but keep in mind that 61x 701s are goinfor around $400 complete! even less as a block if you look. much better platform. I just went through this with my 91

$400? lol ok.... show me one. i agree on the 'keep it cheap' thing though... def plan on getting a 701 down the road.