Piston weight comparison (stock bore size)
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what is the weight of stock pistons?
how about some of the aftermarket offerings for stock bore? Ross, JE, etc.
TIA <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
how about some of the aftermarket offerings for stock bore? Ross, JE, etc.
TIA <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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Brian, I have the weights for the Lunati, JE, and stock pistons at home. I'll post them when I get home from school.
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OK, I lost my piece of paper. LOL However, I just re-weighed them at work.
Lunati piston: 375.1g (495.8g w/ pin); 1.130" compression height
JE piston: 430.3g (548.5g w/ pin); 1.311" compression height
stock piston w/ pin: 600.7g; 1.338" compression height
Lunati rod: 615.4g
Oliver rod: 666.3g
(Both rods were 6.125")
Also, stock crank weighs 52lbs. A Lunati 4" crank weighs 45lbs.
<small>[ April 16, 2002, 08:29 PM: Message edited by: Jason99T/A ]</small>
Lunati piston: 375.1g (495.8g w/ pin); 1.130" compression height
JE piston: 430.3g (548.5g w/ pin); 1.311" compression height
stock piston w/ pin: 600.7g; 1.338" compression height
Lunati rod: 615.4g
Oliver rod: 666.3g
(Both rods were 6.125")
Also, stock crank weighs 52lbs. A Lunati 4" crank weighs 45lbs.
<small>[ April 16, 2002, 08:29 PM: Message edited by: Jason99T/A ]</small>
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Damn...the lunati piston is 17.5% lighter than stock <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
I think I may pop in some forged units and retain the stock rods (forget waiting a bazillion months for shipping <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> )
With good rodbolts I think this would be a decent setup for my 6800rpm shift points <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<small>[ April 17, 2002, 07:25 AM: Message edited by: Fireball ]</small>
I think I may pop in some forged units and retain the stock rods (forget waiting a bazillion months for shipping <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> )
With good rodbolts I think this would be a decent setup for my 6800rpm shift points <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<small>[ April 17, 2002, 07:25 AM: Message edited by: Fireball ]</small>
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</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Fireball:
<strong>I think I may pop in some forged units and retain the stock rods (forget waiting a bazillion months for shipping <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> )
With good rodbolts I think this would be a decent setup for my 6800rpm shift points <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">We seem to be thinking alike. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<strong>I think I may pop in some forged units and retain the stock rods (forget waiting a bazillion months for shipping <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> )
With good rodbolts I think this would be a decent setup for my 6800rpm shift points <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">We seem to be thinking alike. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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Brian, anything from Lunati takes forever. If you want them, you better order now. LOL
We had the Oliver rods and JE pistons at the shop in about a week. However, there was an expedite fee on the pistons since we needed them ASAP. Normal turn around is ~1-1.5 months on them.
Thunder will have all of these items in stock, ready to ship the very near future. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> So, no more waiting 5 years for a piston/rod combo. This will work out well when you need to get your motor together and get your car back on the road quickly.
<small>[ April 17, 2002, 10:03 AM: Message edited by: Jason99T/A ]</small>
We had the Oliver rods and JE pistons at the shop in about a week. However, there was an expedite fee on the pistons since we needed them ASAP. Normal turn around is ~1-1.5 months on them.
Thunder will have all of these items in stock, ready to ship the very near future. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> So, no more waiting 5 years for a piston/rod combo. This will work out well when you need to get your motor together and get your car back on the road quickly.
<small>[ April 17, 2002, 10:03 AM: Message edited by: Jason99T/A ]</small>
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It took about 7 weeks to get my 20cc dish pistons from J&E. They where a custom make, so I am sure that was why it took so long.
Also my Manley rods are 603 grams.
Also my Manley rods are 603 grams.
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</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by LS1derfull:
<strong>Jason 99Ta, bless you for posting this info, but do you have stock LS1 rod weight? TIA</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I just weighed a stock rod, as I did the Oliver and Lunati pieces. It weighed 609.1g (6.09" rod).
<strong>Jason 99Ta, bless you for posting this info, but do you have stock LS1 rod weight? TIA</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I just weighed a stock rod, as I did the Oliver and Lunati pieces. It weighed 609.1g (6.09" rod).
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Thank you again, and remember, lighter means better accelleration and easier on everything else at higher rpm, really sturdy rods means the bearings can get punished more, also.
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</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Fireball:
<strong>Out of Curiosity...how much is the "expedite fee" on JEs?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Brian, there are a few different levels you can choose from. 3 day, 5 day, 7 day, etc. I believe the 7 day was a little over $200 extra.
<strong>Out of Curiosity...how much is the "expedite fee" on JEs?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Brian, there are a few different levels you can choose from. 3 day, 5 day, 7 day, etc. I believe the 7 day was a little over $200 extra.
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Some more info:
- Lunati Pro-Mod rods (6.125") = 666.7 g
- Diamond racing forged pistons (1.315" compression height) = 399.5 g (521.0 w/ pin)
- Lunati Pro-Mod rods (6.125") = 666.7 g
- Diamond racing forged pistons (1.315" compression height) = 399.5 g (521.0 w/ pin)
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</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Jason99T/A:
<strong>Also, stock crank weighs 52lbs. A Lunati 4" crank weighs 45lbs.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I find that interesting... I never really considered the weight difference in the crankshafts...
<strong>Also, stock crank weighs 52lbs. A Lunati 4" crank weighs 45lbs.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I find that interesting... I never really considered the weight difference in the crankshafts...
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SC, yes, you are correct. The piston is out of a 4" Luanti stroker kit w/ 6.125" rods. I posted the info assuming people would recognize it was different due to the smaller compression height.
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</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Jason99T/A:
<strong>Lunati piston: 375.1g (495.8g w/ pin); 1.130" compression height
JE piston: 430.3g (548.5g w/ pin); 1.311" compression height
stock piston w/ pin: 600.7g; 1.338" compression height</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Uh, quick question: Why is the Lunati piston 0.200" shorter than stock compression height? <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> If it really IS shorter, I can tell you why the Lunati piston is 17.5% lighter. But my opinion is that it is a stroker piston for a 4" stroker/stock rod combo, which means it's useless in this comparison.
SC
<small>[ June 24, 2002, 12:09 PM: Message edited by: SS00Blue ]</small>
<strong>Lunati piston: 375.1g (495.8g w/ pin); 1.130" compression height
JE piston: 430.3g (548.5g w/ pin); 1.311" compression height
stock piston w/ pin: 600.7g; 1.338" compression height</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Uh, quick question: Why is the Lunati piston 0.200" shorter than stock compression height? <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> If it really IS shorter, I can tell you why the Lunati piston is 17.5% lighter. But my opinion is that it is a stroker piston for a 4" stroker/stock rod combo, which means it's useless in this comparison.
SC
<small>[ June 24, 2002, 12:09 PM: Message edited by: SS00Blue ]</small>