[TitaniumTT]

Originally Posted by My5ABaby

You can make good power with the N/A rotors in a boosted engine (which is why I'm doing it), but the chances of detonation are higher due to the higher compression. I'm fixing this with e85 but a lot of people probably aren't willing to do that. I'm only doing it this way because I'm starting with a N/A platform. If I had my druthers it's just easier to start with a TII block.

There are other ways to fight off detonation rather than using E85. My big concern with E85 is that you don't always get E85. So you tune for E85, then get a tank of E70 thinking it's E85 (making up numbers here, I don't know what the actual variances are) and then what happens? I would rather go with something that can be had consistantly. Or get one of those sensors that senses the amount of ethanol and trims fuel and spark to suit it. That would be trick, but a pain in the ass to tune, although once you did get it, you would truly have a flex fuel vehicle.... funny how the OEM's did it that way

Or just drop in some turbo rotors.

I'm thinking about putting in a set of the the S4 n/a rotors into the 'vert. But this will be a low boost, stock turbo engine. A little more compression to liven it up down low... but we'll see.

Originally Posted by RICE RACING

No way ever would I use higher than 9.0:1 compression rotors as found in the S5 onwards turbo engines. Do not recommend it for any fuel types in human existence. You will always need to run non ideal fuel mixtures and spark timing and all of these factors point towards the static compression being WAY TOO HIGH.

This is a true story, but again, horses for courses as you put it. If you're running minimal boost on a stock port, stock turbo engine, it can liven it up a bit in the vac/cruise ranges.