|
By lyonroad - 12 Years Ago
|
|
My 292 block is currently in the shop getting rebored, line honed, crank ground and balanced, flywheel and pressure plate included.. The ECK C heads will follow soon. Is there anything I should do to the ports before I take them in? I am looking for a late model set of exhaust manifolds. Verne Schumann suggested that, if feasible I should consider 1.94 intake valves. I see that John Mummert has 1.84 intake valves as well. Any advice?
|
|
By PF Arcand - 12 Years Ago
|
|
Mark: the advertised compression on a 292 for those heads was 8.5:1. However, Mummert says those ratings are about 12% high when figuring in later composite head gaskets. So, that leaves them at roughly 7.5:1. If they have never been milled, might be a thought to cut them some. Ted says the engines can often benefit quite some from a good compression increase. Of course there is the issue of what fuel you want to pay for?. Don't know, but going to 1.94 valves on those heads might cause a shrouding problem? Call me if you want to kick it around..
|
|
By lyonroad - 12 Years Ago
|
|
Thanks Paul, I wont do anything without expert advice, hopefully with more than one opinion. Today I read and article that suggests that Ford heads (generally and not Y heads specifically) respond very well to a 30 degree back cut on the valves. I did a search here but didn't find any info on this. The article was written in 2009 and at that time back cutting a valve ran about $4.00 each so the cost shouldn't be exorbitant. Does any one have an opinion on this?
|