When we got the
LS1 out of a 1997 corvette we had no idea how many miles it had. Hell we didn't know it even ran. We told the guy selling it on craigslist “when you show up
with the motor we’ll test is and then we’ll decide to buy it”. This was a
bluff. We assumed just by showing up he knew the motor was good. We slapped it
in the Miata and ran hard for the last 5 years. Needless to say it’s time to
rebuild it..

We took some
time to figure out a simple issue. How do we keep engine oil out of the back
seat of the jeep? We bought a harbor freight trailer and built an engine stand
that will work with the trailer.
Finished up and
the motor delivered to john’s shop in TN.
build updates:
John was filtering
in photos from the build.
PROBLEMS!!
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The skirts are
scraped up.
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..
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A little nick
from the valves on the piston. These pistons are not going to work. The vales
should be replaced too…
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UPDATES 1/19/2015
UP-Date 8/25/2015
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John removed the old beat up pistons. The early ls1 cast
pistons are huge and weight in at 578.7 grams. |
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Our new pistons are a lightweight when compared to the old
ones. These Probe pistons come in at just 498.0 grams. A savings of 80 Grams
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Johns going to have some fun pulling 640 grams out of the crank.
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UP-Date 8/25/2015
Updates, JB Racing engine has been working like a top. Power
is fantastic, he dialed back some mid-range TQ to give me more top end and a
higher top speed. We are now hitting 150mph @ road Atlanta. Same top speed as a
corvette ZR1.
We did have some minor blow by and crank case issues during
the first race, john said it was normal and he was right. By the 2nd
race the blow by issues where gone.
...
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