Piston weight comparison (stock bore size)
04-16-2002, 01:19 PM
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Piston weight comparison (stock bore size) 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" />
04-16-2002, 01:46 PM
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Re: Piston weight comparison (stock bore size) Brian, I have the weights for the Lunati, JE, and stock pistons at home. I'll post them when I get home from school.
04-16-2002, 08:20 PM
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Re: Piston weight comparison (stock bore size) 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>
04-17-2002, 07:18 AM
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Re: Piston weight comparison (stock bore size) 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>
04-17-2002, 07:22 AM
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Re: Piston weight comparison (stock bore size) </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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04-17-2002, 09:53 AM
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Re: Piston weight comparison (stock bore size) 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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04-17-2002, 11:29 AM
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Re: Piston weight comparison (stock bore size) 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.
04-17-2002, 06:19 PM
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Re: Piston weight comparison (stock bore size) </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).
04-17-2002, 06:38 PM
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Re: Piston weight comparison (stock bore size) 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.
04-18-2002, 12:47 AM
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Re: Piston weight comparison (stock bore size) </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.
06-24-2002, 11:36 AM
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Re: Piston weight comparison (stock bore size) 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)
06-24-2002, 04:46 PM
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Re: Piston weight comparison (stock bore size) </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...
06-24-2002, 04:54 PM
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Re: Piston weight comparison (stock bore size) 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.
06-25-2002, 12:07 AM
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Re: Piston weight comparison (stock bore size) </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>
