> >The connecting rod looks like it's forged. How can I tell?
>
> ?
I can tell if a bike crank is forged, cast, cnc, ground etc. But
I dont have many references for a piston rod...
> >I'm not sure what I'd gain with forged pistons unless I change
> >the crankshaft and put a Danielson head, no? I'm sure the
> >head will bust before the piston.
>
> I am not sure, I copied a message to the list once, regarding a 400hp
> Conquest that cooked it's engine 3 times without ever hurting it's stock
> head.
But the 505 has a tendency of busting the head on detonation more than
the pistons. In any case, I will go to great lengths to insure that there is
no detonation going on. By having the various sensors working (I got a
new wastegate and will have the overboost switch tested or simply replace
it directly if it's cheap), a new rising rate fuel regulator (which I have) and
running on high octane, I dont think I'll get detonation, even with higher
boost.
> bad engine builder. Why a new crankshaft? I thought we confirmed that it
> was forged?
I wasn't sure it was.
> Head bust before the piston? Doesn't your car have a good head with a
> toasted piston?
I really dont know the history, how everything happened. The piston has an
angular damage, but yet nothing left of the incident. It is as if somebody had
swapped the head without replacing the piston yet knowing it was damaged.
To me, it really looks like an exhaust valve that would have crashed with the
piston. Yet the head is ok. I dont know how to make sense of all this.
Ciao,
Francois Dion (francois@hyperreal.org)
-- Member: FLU #1722, PCNA http://www.fortunecity.com/silverstone/zagato/101/launch.html Alfa Romeo, Fiat, Lancia, Peugeot, Volvo, Solex