Looking for LSJ rods weight...
05-19-2009 | 08:31 AM
#1
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From: Paris
Looking for LSJ rods weight...
Well, I tried searching for it, but looks like I'm unable to find the LSJ rods weight
Do someone have it ?
I'm actually considering using LSJ rods with a L61 eagle forged crank and custom JE pistons, as the rods from the LSJ are a bit longer, it makes the rod/stroke ratio better = less friction = more hp (or less hp lost in fact).
BUT as the piston pin is bigger than on the L61 it will already mean some more weight, so depending on the weight of the stock LSJ rod, this project should be useless... (N/A build actually)
Do someone have it ?
I'm actually considering using LSJ rods with a L61 eagle forged crank and custom JE pistons, as the rods from the LSJ are a bit longer, it makes the rod/stroke ratio better = less friction = more hp (or less hp lost in fact).
BUT as the piston pin is bigger than on the L61 it will already mean some more weight, so depending on the weight of the stock LSJ rod, this project should be useless... (N/A build actually)
05-19-2009 | 12:34 PM
#3
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Joined: 12-07-07
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From: Paris
Not with the L61 piston no, different pin diameter as I said, but the crank big end is exactly the same, so no issue at all with a custom piston.
GMPP used to have a piston set available to use LSJ rods on a L61, but these were stock CR ones (and heavy), not interesting for me but this confirms it could be done
Old build book quote :
GMPP used to have a piston set available to use LSJ rods on a L61, but these were stock CR ones (and heavy), not interesting for me but this confirms it could be done
Old build book quote :
The 2.0L LSJ ECOTEC engine has forged steel rods similar
to Small Block Chevy “Pink Rod.” The forged steel rods are
made of high quality material and have a cap screw 23 mm
small end, and a full floating bronze bushing. These rods are
available through GM under part number 12755126. These
rods require GM Performance Parts piston set part number
88958634 to work with the stock 2.2L crankshaft.
[...]
The stock 2.2LECOTEC pistons have been tested to power
levels approaching 300 hp. However these pistons should
be replaced with a stock forged-type piston for applications
over the 300 hp level. JE, Wiseco and Diamond offer pistons
in various compression ratios that work for most
applications. We recommend a compression ratio of 9:1 or
less for blown gas applications, and 10-11:1 for normally
aspirated with premium fuel. GM Performance Parts offers
a stock replacement piston that is a direct drop in when used
with the LSJ connecting rod. (Fig. 49)
to Small Block Chevy “Pink Rod.” The forged steel rods are
made of high quality material and have a cap screw 23 mm
small end, and a full floating bronze bushing. These rods are
available through GM under part number 12755126. These
rods require GM Performance Parts piston set part number
88958634 to work with the stock 2.2L crankshaft.
[...]
The stock 2.2LECOTEC pistons have been tested to power
levels approaching 300 hp. However these pistons should
be replaced with a stock forged-type piston for applications
over the 300 hp level. JE, Wiseco and Diamond offer pistons
in various compression ratios that work for most
applications. We recommend a compression ratio of 9:1 or
less for blown gas applications, and 10-11:1 for normally
aspirated with premium fuel. GM Performance Parts offers
a stock replacement piston that is a direct drop in when used
with the LSJ connecting rod. (Fig. 49)
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