I got the decks cleaned up from my machine shop and while there asked them to cc the cambers. Chambers came out at 98cc and with a piston (RFD supplied) with 4.5cc dome, compression came out to be about 12.3:1.
I asked for 15.0:1 comp and the heads had a chamber too large. He told me to deck the heads to get chamber size down but the valve pockets were not deep enough to do that. He supplied pistons too.
After pressing him to make good and do me another set of heads, he then said it as a piston problem and to send them back to him for a look.
I sent the heads in to get the decks done and got them flowed when they were there. Number were way down as per the pic I posted in that thread.
I know you don't race flow benches, but if your supplied a flow sheet with a set of heads, then they should flow what the sheet says or at least close to.
I sent a email to ask why they are not as should be. The reply I got was from Dan that said "When will your engine be finished". Rang a couple of times and left messages as no one answered.
Decided to fix the problems myself and give him the flick.
Its cost me $6k for machining cc check and flowed, new pistons and new exhaust springs and shims to match the cam that he organised for me too.
I spent about $15k US with him (heads complete, sheetmetal manifold, pistons, rings, pins) and didn't get much satisfaction.
Awaiting new pistons to arrive at the moment. When I get it sorted and dyno'd, i'll post power figures.
I asked for 15.0:1 comp and the heads had a chamber too large. He told me to deck the heads to get chamber size down but the valve pockets were not deep enough to do that. He supplied pistons too.
After pressing him to make good and do me another set of heads, he then said it as a piston problem and to send them back to him for a look.
I sent the heads in to get the decks done and got them flowed when they were there. Number were way down as per the pic I posted in that thread.
I know you don't race flow benches, but if your supplied a flow sheet with a set of heads, then they should flow what the sheet says or at least close to.
I sent a email to ask why they are not as should be. The reply I got was from Dan that said "When will your engine be finished". Rang a couple of times and left messages as no one answered.
Decided to fix the problems myself and give him the flick.
Its cost me $6k for machining cc check and flowed, new pistons and new exhaust springs and shims to match the cam that he organised for me too.
I spent about $15k US with him (heads complete, sheetmetal manifold, pistons, rings, pins) and didn't get much satisfaction.
Awaiting new pistons to arrive at the moment. When I get it sorted and dyno'd, i'll post power figures.
