2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

2.4 N/A round track engine

Old 02-04-2014, 03:14 PM
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2.4 N/A round track engine

Im building a 2.4 engine for pavement oval racing the parts will consist of

molner rods
diamond 12to1 horizontal ported pistons
total ap stainless ringset
clevite hardened rod bearings
ati underdriven balancer
supertech .5 mm oversized valves int/exh
arp head studs
zzp 72# springs
balance shaft delete kit
my sleeves

the head will have the casting flash removed and smoothed
the crank will get lightened and the key way extended
the complete rotating assembly will be balanced

I am considering sending the crank here after balancing and lightening Performance Metal Micropolish
the micro polishing will be good for oil shedding

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ill update as things progress

Last edited by mrbelvedere; 02-04-2014 at 03:37 PM.
Old 02-04-2014, 03:23 PM
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Ok? is that it?
Old 02-04-2014, 03:34 PM
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Bragging rights.
Old 02-04-2014, 03:38 PM
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Originally Posted by Dream20b
Bragging rights.
what bragging rights
Old 02-04-2014, 03:49 PM
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I've always wanted to see a big N/A build
Old 02-04-2014, 05:10 PM
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what cams?
Old 02-04-2014, 05:15 PM
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Originally Posted by noorj
what cams?
stock for now
Old 02-05-2014, 11:49 AM
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Get some cams in that baby

I love how Molner has their LSJ and LE5 rods listed under Chevy Cavalier on their website lol
Old 04-19-2014, 09:37 PM
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got the crank back we removed 1.5 pounds off of before it was sent out for vibratory polishing

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here is the head the exhaust seats were raidiused to increase airflow

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casting flash was remove and ports smoothed

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head is complete with .5mm valves and zzp 72lb springs

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crank key way getting extended

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here is the horizontal gas ported pistons before the Teflon coating the pistons are 11.7 on the compression the rings are total seal ap stainless

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Last edited by mrbelvedere; 04-19-2014 at 09:51 PM.
Old 04-19-2014, 09:44 PM
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has anybody built a high compression 2.4 n/a yet? wonder how much itd actually push..
Old 04-19-2014, 09:58 PM
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Well it's already high compression and people are adding boost to them. I'm sure it'd be a snappy, revving, son of a bitch when done.
Old 04-20-2014, 11:36 AM
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So what are you planning to set the RPM cut off to?
Old 04-20-2014, 11:52 AM
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Originally Posted by Pitbull2o08
Well it's already high compression and people are adding boost to them. I'm sure it'd be a snappy, revving, son of a bitch when done.
lol high compression starts around 12:1 and up.
Old 04-20-2014, 11:54 AM
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Very cool, what class of car is this for?
Old 04-20-2014, 08:02 PM
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Originally Posted by andrewcarr1993
So what are you planning to set the RPM cut off to?
what ever stock is it dose not need to be any higher

Originally Posted by Spawne32
lol high compression starts around 12:1 and up.
no it dose not 10to1 is still considered high compression

Originally Posted by ItalianJoe1
Very cool, what class of car is this for?
its a pavement oval class up north somewhere and a 17yr old girl races the cobalt it goes in and its a gutted and caged cobalt
Old 04-20-2014, 10:19 PM
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Originally Posted by mrbelvedere
what ever stock is it dose not need to be any higher



no it dose not 10to1 is still considered high compression



its a pavement oval class up north somewhere and a 17yr old girl races the cobalt it goes in and its a gutted and caged cobalt
That's because very few people around here have actually discovered high compression.
Old 04-20-2014, 10:34 PM
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I doubt that
Old 04-20-2014, 11:37 PM
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Local Honda guys run 12:1 on street car setups, the race cars are 14-15+. But for a street car without DI a 10:1 is pretty good. Most cars are creeping into the 11-12:1 range now with the proliferation of direction injection.
Old 04-21-2014, 12:07 AM
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The LE5 is already 10.5:1 if I'm not mistaken.
Old 04-21-2014, 12:24 AM
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Originally Posted by Pitbull2o08
The LE5 is already 10.5:1 if I'm not mistaken.
10.4:1 according to the manual but might as well be 10.5:1, a relatively common compression for all motor high performance engines for over 30 years with the invention of premium fuel and electronic ignition.
Old 04-21-2014, 08:22 AM
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lol
Old 04-21-2014, 08:29 AM
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Sub'd. This should be good.
Old 04-25-2014, 10:23 AM
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pistons in

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Old 04-25-2014, 10:33 AM
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Very nice build. Looking forward to the end result
Old 04-25-2014, 10:48 AM
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Lookin good home slice

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