B Series Compression Ratio's for different setups

[WHT_EP3]

sooooo what would be the best N/A set up

[TheChosenOne]

Very nice! I have been waiting for this. Quite honestly, some other people's numbers on IA are a little off...

P72 head/B18A/B Block

STD = 13.170743903246784

--compared to--

4) B18A/B Block with B18C1 (P72) head

PR4 (B18A/B) pistons: 9.73:1

PR3 pistons: 11.59:1

P30 pistons: 11.81:1

PCT pistons: 12.27:1

I know some people who have run this setup on pomp gas for years, and 13.17:1 just isn't possible with 93. 12.27:1 sounds MUCH more accurate.

[TheChosenOne]

sooooo what would be the best N/A set up

Brian... you know better...lol.

The answer for this question is multiple things. When you say best, are you talking about the most Hp, or the most Torque, or the most reliability??? Knowing you, your probably talking about the most power in general.

For the sake of argument, I am throwing out reliability just this once.

As far as B-series are concerned with stock pistons, the best N/A motor would have to be: Ls Block w/ CTR pistons, and a GSR head. Hands down. The Ls/Vtec offers more torque, and more Hp than a full gsr with CTR pistons. (keep in mind this answer is given without taking reliability into consideration).

Honerable mention goes to the B20Z with the GSR head. Don't sleep on the 2.0vtec monster. If this question wasn't "stock piston specific", the B20 with anything above 11:1 compression and a crank balance would rape any 1.8 liter.