If you bleew the Cometics it was due to bad tune or ill prepared block/head surface.
9.7:1 is a lot but I would not go changing pistons if they are OK. Alot of blower guys run 10:1 or higher but you need to have the tune tight and some 116 octane fuel at the track when it is set of kill would hurt.
I'd check the pistons to see if you pulled the crowns up, I bet you did then it popped the gasket. If you need to replace the pistons drop it down if you can to around 8.5:1-9:1 then you can crank up the boost and not worry.
I like N2O, and built 2 N2O specific motors earlier this season. If you want to go carb N2O think about this.
Good Pro-Systems N2O carb $1000
Good Wilson/ProFlow dual Stage plate $1700 no bottle
or a Fogger $1200-$2000
Bottles $300 each, $40 to fill every bottle.
On a 300 shot you are only going to get 2 full passes out of a bottle, so if you plan to get 6 passes you need 4 bottles so you have extra. Depending on how much you race that is around $160 each weekend just in N2O.
I was looking at spraying 500-600 basically 1 run per bottle, buying 8 Wilson bottles @ $300 plus, buying the N2O in bulk at $2.50/lb and filling bottle myself. It would be over $250 a weekend in N2O, 9 races a year not counting testing which will atleast 9 times....figure out the math it was cheaper to go a blower set-up in the long run and not have to change pistons often..lol
10.8 @ 126 is good, it means the car hooks. Slap on some cogs turn the boost up and get that low 10 sec pass. You have more left at that HP level....
anyways im thinking of switching to a carb and using a 200-300 shot of NOS. i was told by a buddy of mine the car would be faster. any thoughts? i wanna run low 10's with the unit and mid 11's NA
