Hypereutectic pistons and failures related..
initial timing-24* and 32* total.
no butted rings, piston skirts look brand spanking new.
somehow....someway...dirt/junk got into the motor.
I say this due to the fact that the skirts are bitchin, and when I pulled the #,3,5,7 rods I noticed # 3 cap side rod bearing lost about .100 off the side/edge-crank/radius side. The rod bearing are the clevite 'narrow' $80 or... the right ones for the type of journal [raised radius not filet style]
The crank checks to be right on and no polishing even needs to be done.
but something got in there...
so bearings,rings,gaskets, and the valve fix which is done.
I will be scribing each head/chamber using the bore as a guide, then I will open the all the chambers up to the scribed size, then I will re cc each chamber and correct if necessary to get all even and down to 60cc this time, then remill the intake side and the intake since at this point there will be plenty of milling going on.
The other way I might do this is to only scribe the side of the chamber where the quench pad comes up to/or the shallow side of the chamber opposite the spark plug, this way I can keep the mod uniform still, but end up having to mill less... that would only be 1/3 around.
also,
I think I might find a tiny sleeve to press into the rocker oiling feeds in the stands and do more finessing of the the straight walls...might even tube the head bolt holes and drill them back to 'bolt size'....
the other ponder I had was brazing up the exhaust floors...it's free...and I got the time being I have the 340 for now...hmmm
there is a decent amount of work to be done on the far side wall of the runner, before and as it transitions into the bowls.
....hmm ...good potential in what most call out dated.
[side note], I stuck the LD340 intake onto the 340 [pics], removing the weiand single plane...
I think it'll pick up a bit where I need it most with this particular cam/flow/gear/carb combo.
these x heads only flow [email protected] & [email protected] @28 depression
got about $600 into'em with hard seats, mancini ss valves, comp springs & 3 angle, but thats good fer 461'ish hp potential.
it works nice with the .528 solid thats in there.
I'd like to dyno it, chassis then flywheel...maybe.
initial timing-24* and 32* total.
no butted rings, piston skirts look brand spanking new.
somehow....someway...dirt/junk got into the motor.
I say this due to the fact that the skirts are bitchin, and when I pulled the #,3,5,7 rods I noticed # 3 cap side rod bearing lost about .100 off the side/edge-crank/radius side. The rod bearing are the clevite 'narrow' $80 or... the right ones for the type of journal [raised radius not filet style]
The crank checks to be right on and no polishing even needs to be done.
but something got in there...
so bearings,rings,gaskets, and the valve fix which is done.
I will be scribing each head/chamber using the bore as a guide, then I will open the all the chambers up to the scribed size, then I will re cc each chamber and correct if necessary to get all even and down to 60cc this time, then remill the intake side and the intake since at this point there will be plenty of milling going on.
The other way I might do this is to only scribe the side of the chamber where the quench pad comes up to/or the shallow side of the chamber opposite the spark plug, this way I can keep the mod uniform still, but end up having to mill less... that would only be 1/3 around.
also,
I think I might find a tiny sleeve to press into the rocker oiling feeds in the stands and do more finessing of the the straight walls...might even tube the head bolt holes and drill them back to 'bolt size'....
the other ponder I had was brazing up the exhaust floors...it's free...and I got the time being I have the 340 for now...hmmm
there is a decent amount of work to be done on the far side wall of the runner, before and as it transitions into the bowls.
....hmm ...good potential in what most call out dated.
[side note], I stuck the LD340 intake onto the 340 [pics], removing the weiand single plane...
I think it'll pick up a bit where I need it most with this particular cam/flow/gear/carb combo.
these x heads only flow [email protected] & [email protected] @28 depression
got about $600 into'em with hard seats, mancini ss valves, comp springs & 3 angle, but thats good fer 461'ish hp potential.
it works nice with the .528 solid thats in there.
I'd like to dyno it, chassis then flywheel...maybe.