TU8 or TU9?

[Arthur 12]

hi guys. All talks about 1.5, 1.4 short stroke alu tu engines and such now got me thinking. The EC8 engines from China seems to be the same iron block as TU5 but with 92.5 stroke and 79 bore. 

 

Now I'm wondering how big one could go with the iron tu. With 84mm cylinder spacing, what would be the max bore for non turbo? Would one dare to go 81mm? 81 x 92.5 would make a TU9JP4 of 1906,5 cc 

 

New crankshaft with 92.5 stroke are available dead cheap.

Edited 12 hours ago by Arthur

[welshpug 1,650]

Why not start with a readily available XU ?

[Arthur 12]

5 minutes ago, welshpug said:

Why not start with a readily available XU ?

Sure that would be possible. but I'm just wondering. And I just happen to like the TU setup. Maybe not logical, but oké.