Well I have come across some forged piston that will run 13.1 compression on a built 2.0l motor. They are 85mm bore and I am a little ife about running that high of compression on a street care. Let in mind that the motor is sleeved. I have a b16 head that has been milled a bit from the previous owner. I was wondering would this be a good by sense the head has been milled a little. Oh ya the reason I got the head was because it was 350 for the fully assembled head, including the IM, TB, and all the neccessary sensors. what kind of compression do you think i would be running and waht should i run? I prefer 12.8.1

 

I believe the b16 head will raise the compression a bit, even if it isn't milled, so you're going to be above 13:1. I would definitely not try to street that without another car on hand...besides, how is this FI?

 

1. This is FI, not tech or drag racing for all motor questions.

2. You can run 13~13.5:1 compression on pump gas you just need to tune the maps with a standalone. Make sure you check your piston-to-valve clearance with your cams that you are using. Claying is the best method for this.

I have a 2.1L 13.5:1 gsr block with a fully built head and itbs that I am going to run soon on the street, with slightly higher octane so I dont have to retard the timing as much.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted hybrid &raquo;</TD></TR><TR><TD CLASS="quote">

I have a 2.1L 13.5:1 gsr block with a fully built head and itbs that I am going to run soon on the street, with slightly higher octane so I dont have to retard the timing as much.</TD></TR></TABLE>


wow

 

the head isn't milled, so take the cc dome of the piston and calculate it with the 85mm bore B18C block and B16A head. and of course check the valve to piston clearance if you're using aggressive cams for N/A.