is the block used? interesting he used ti when iron is what most of the companys use, what was he using the block for. as far as i know you dont want to go past 89mm bore

 

Are you sure that the sleeves are Titanium. Its one of the last materials I would have thought you would want to use for cylinder bores. Titanium is renouned for problems work hardening, glazing and gauling when used in a rubbing situation. Sure its not just the brand name rather than the actual material they are made from.

Speedracer.

 

Yeah after doing some research and thinking about it, Ti makes no sense. We'll see how this works out.

 

I thought that block had Darton sleeve. Isn't it ductile iron?

Ti sleeve doesn't make any sense.
I imagine it would be extremely difficult to bore or hone the Ti sleeve.

 

who ever your buying the block form didi he ever use it? I'm curious what his experiences were with ti sleeves?seems kinda odd

 

Hmmm....so yea sleeved is a given....what does anyone think te max bore could be? I read in an old post that UL suggested that 90mm, and it has been suggested that maybe 91mm could fit. Anyone investigated this? Thanks!

 

I think the question should be what you want to do with the engine overall?
If you want to run NA with oversize pistons then it might not be too bad with larger bore.
If you wan't to run high boost then it's more risky with thinner cylinder wall.

There is no need to run larger bore if the sleeve can handle high boost like 50psi
Just keep the same volume and turn up the boost

 

BTW, Honda oversize pistons are .25mm overbore.

 

Nice closed deck design. These look like Darton sleeves to me.

 

honda9krpm... at what angle was your sleeves crosshatched? i know honda says 60 degrees but i was just wondering if it changed with the different manufacturers