Super Jet 61 x cylinder - biggest bore on OEM sleeves?

[Waldbjoern]

As the thread applies, imm curious about what bore i can reach with a ADA 701 girdled head, and matching 35cc domes. Would a 701 head fit straight on a 83mm bore, or would i need a 760 head? Is it possible to go to a higher bore e.g. 83,5mm with a 701 head?

Any good offers on how long a cylinder with a 83mm bore and port job, would last running with proX pistons? Of course given you run the correct oil and mixture. Is it like the OEM bore - or is it more likely to scuff up the cylinder?

Any inputs are much appreciated.

 

[TheBuzzard]

84mm on 61x sleeves is the last bore. 701 heads are chambered for a max of 83mm pistons.760 heads are chambered up to 86mm. larger bore isnt going to make it wear out any faster.........

 

[Waldbjoern]

Cheeers - but that means I only have one shot in the canon - if the cylinder scuffs up or something like that, idd have to purchase a new head to make it work with a larger bore :/

 

[TheBuzzard]

you can always take the ADA 701 domes and have them turned on a lathe for the 84mm pistons. its a very simple process. i have even cut ADA domes on my drill press with a die grinder, file and razor blade.

 

[Waldbjoern]

I Like what imm hearing - cheers for inputs


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[Sospikey]

I've run 84.25 on stock sleeves. It works but it there isn't much material left...

 

[Scraggly]

you can always take the ADA 701 domes and have them turned on a lathe for the 84mm pistons. its a very simple process. i have even cut ADA domes on my drill press with a die grinder, file and razor blade.

damn!

 

[amitchell]

cant you run 760 domes in a 701 head and avoid machining the 701 domes?

 

[Freakrider]

cant you run 760 domes in a 701 head and avoid machining the 701 domes?

Yes but the point was not having to buy new domes.