Redline-Motorsports

iTrader: (3)

Finally got my spinning assembly back from the machine shop today after waiting for 8 weeks for JE to finish my pistons! The machine shop had a hell of a time getting the assembly to balance but finally got it on the money due to how light the rotating assembly was. This piston's that JE made was the first set of there new LS1 piston that was just introduced at the SEMA show last week. They are very light weight and don't require notching for the reluctor wheel. The piston and pin weighed in at 515 grams!! That combined with my Carrillo rod (460 grams)really through off the rough balancing done by Lunati. They estimated a bob weight of 1875 gms. and the actual came out to 1710 gms. Just interested to know where some of other combinations are weighing in at?

StevieZ

iTrader: (3)

My Lunati 383 kit is as follows:
rod rotating:446
rod reciprocating:178
Piston and pin:506
wrist pin locks: 4
rings with oil spacer:45
rod bearings(2 sets):76
oil estimate:6
bobweight total:1707 grams

Redline-Motorsports

iTrader: (3)

Great thanks for the stats!

LS1derfull

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 9D9LS:
<strong>Finally got my spinning assembly back from the machine shop today after waiting for 8 weeks for JE to finish my pistons! The machine shop had a hell of a time getting the assembly to balance but finally got it on the money due to how light the rotating assembly was. This piston's that JE made was the first set of there new LS1 piston that was just introduced at the SEMA show last week. They are very light weight and don't require notching for the reluctor wheel. The piston and pin weighed in at 515 grams!! That combined with my Carrillo rod (460 grams)really through off the rough balancing done by Lunati. They estimated a bob weight of 1875 gms. and the actual came out to 1710 gms. Just interested to know where some of other combinations are weighing in at?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">460 grams for a Carillo rod? I dont think that is possible in steel! Are you sure thats their weight? Aluminum maybe <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

Plan B

422 LS1 4.100" bore x 4.000" stroke

Piston 458.0
Pin + 116.5
Locks + 2.6
Rings + 50.2 Insert 37.5
Rod (small end) + 174.0 Rod (big end + 444.0
Total = 801.3

Pistons/Throw x 2 Rods/Throw x 2
Reciprocating Weight = 1602.6 Oil + 4.3
Balance Factor x 51.0
Recipricating Weight = 817.3 Rotating Weight= 967.3

BOB WEIGHT = 1784.6

Sunnen DCB-750 Crankshaft Balancer

Redline-Motorsports

iTrader: (3)

Thanks!