Differences between blue top TVIS and red top TVIS/non-TVIS

[Mr Revhead]

there is no real internal differences in the blocks.
except for the oil squirters in the later models.
so yes, you can run 20v bits in a bluetop block if you so wish.

20v pistons prob wont work in a 16v head though.....

[Stealer Of Souls]

Cool. Got it. I think I now understand...

Must be time to go make a FAQ PDF of all this info...
Guess that's tonights task...

[fangsport]

can you use the big port bolt torque specs for a red-top non-TVIS??
they were the only ones i readily found on the internet

[ee904age]

20v pistons prob wont work in a 16v head though.....

Yeah, they do. But it becomes an interference engine and there is less than 1mm clearance between the dome of the piston and the combustion chamber.