Super Jet ADA 760 head dome sizes

[superjetchet21]

What piston size are ada's 760 domes suitable for? 84.50? to ? Just curious if 771cc/85.00 still be okay with 760 domes? Or if theyd be to small?

 

[JetManiac]

What piston size are ada's 760 domes suitable for? 84.50? to ? Just curious if 771cc/85.00 still be okay with 760 domes? Or if theyd be to small?

You are fine at least to 86mm.

 

[freeride4me]

How far can you bore a 760 sleeve?
And if you exceeded 86mm what would you use for domes for an ADA head?
Or can you even use a 701/760 type head?

 

[Matt_E]

Bore size of a 760 sleeve depends on what sleeve it is. The 701 62T sleeves can't go very far past 84. The 760 62T/64U sleeves should be good to 86.
Once you go aftermarket BB sleeves, it again depends on which sleeve it is.

For bores 88mm and up, ADA sells their super bore domes.

 

[JetManiac]

Bore size of a 760 sleeve depends on what sleeve it is. The 701 62T sleeves can't go very far past 84. The 760 62T/64U sleeves should be good to 86.
Once you go aftermarket BB sleeves, it again depends on which sleeve it is.

For bores 88mm and up, ADA sells their super bore domes.

Outer diameter of all 62t sleeves(both 62t/701 and 62t/64x 760) is the same and can be bored to 86mm, that is why the ADA domes are designed up to 86 which is last bore for these cylinders.

 

[Matt_E]

The 701 sleeves have a thinner bottom section than the 760 sleeves though. Or am I remembering something wrong?

 

[Nuklear6]

The 701 sleeves have a thinner bottom section than the 760 sleeves though. Or am I remembering something wrong?

Your 100% correct. The 62t 701 sleeves have the same OD as the 760 for the portion that is held by the casting, but the sleeve skirts on the 62t 701 are thinner, and can not be bored much pasted 84. You can actually see the "step" in od of the sleeves where the sleeve skirt starts. 760 sleeves have thicker skirts and can be bored to 86. I have never seen a failure at 86 but honestly believe the stock 760 sleeves are a bit thin at 86. I like to stay at 85.5 unless the customer insists. Risk vs reward and that point isnt worth it to me.

And as said above ada 760 domes are good up to 86mm with out any custom work...

 

[JetManiac]

The 701 sleeves have a thinner bottom section than the 760 sleeves though. Or am I remembering something wrong?

Correct, forgot about the step in on them. Egg on my face!

Your 100% correct. The 62t 701 sleeves have the same OD as the 760 for the portion that is held by the casting, but the sleeve skirts on the 62t 701 are thinner, and can not be bored much pasted 84. You can actually see the "step" in od of the sleeves where the sleeve skirt starts. 760 sleeves have thicker skirts and can be bored to 86. I have never seen a failure at 86 but honestly believe the stock 760 sleeves are a bit thin at 86. I like to stay at 85.5 unless the customer insists. Risk vs reward and that point isnt worth it to me.

And as said above ada 760 domes are good up to 86mm with out any custom work...

Oops. The outside of the sleeves is 90mm and the skirt steps in to 88mm on the 62t/701.