I have not measured chamber volume but the heads are 3.39 thick which according to the Tr6 guys should be about 9.75:1+ with 0 deck clearance. I haven't fitted the pistons yet but I'm assuming some clearance with the stock block. I'm assuming all things should be about equal with the domes in the 2000. I just measured my circle B @3.29, any idea what cr that would be with flat tops? I've seen some discussion that the domes slow combustion? Building Chevy's back in the day we always used "pop top" pistons, maybe the higher cr made up for the inefficient combustion?
Thanks again, Terry
--Previous Message--
: Well obviously the bigger the dome, the
: higher CR, but it can also cause poor
: flame front travel and "dead spots
: in the chamber. It can also negate some
: of the squish effect.
: Having said that, in this case you will
: probably be fine, it's not going to be
: flogged at WOT all the time.
: Have you calculated your CR with the
: domed pistons?
: Glen
:
: --Previous Message--
:
: Hi Glen,
: The domes are .30" x 2.0"
: dia. They are Hepolite 158112.
: Thanks, Terry
: --Previous Message--
: Terry how high is the dome?
: Glen
:
: --Previous Message--
: Hi Guys,
: I purchased a set of dome pistons from
: Rimmer cheap and I'm afraid that I'm
: trying to talk myself into using them.
: I'm building a 2000 Spit. for coast
: road fun. Triple Webers, Pheonix
: exhaust, aluminum flywheel etc. But I'm
: also building a 2500 Gt6 EFI as a
: driver. I have two Tr6 ported heads and
: a circle B as a spare. Would be nice to
: be able to mix and match? Just worries
: me that this is the same
: "logic" that BL used to
: create the domes in the first place. Am
: I creating a bottleneck to save a shave
: and a few bucks on flattops?
: Thanks in advance, Cheers, Terry
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