5.3 building again! update!

showing updates, since i broke the motor in less than a week, what it could be, what i plan to do, explaining the theory behind how it broke, and trying again!

i started on the car at like 7 and its installed and ready to run for tomorrow already

my gen4 gutted motor is alive!

installed ebay pullout used rods and pistons from a 2008 5.3, regapped my rings to 28 really loose to take some abuse, and i have it all together and running, fired it on the ms1 and now its on the microsquirt again for more testing, if all goes well ill be pulling out the MS1 and MSD6010 and running this permanently.

got my gen4 stuff and installed it all today!

got my gen4 shit today, wich you can see is so fuckin beast like its awesome...

they look like aftermarket rods and pistons.

full floating wrist pin instead of a pressed, and the rod is a H beam style instead of a I beam hopefully much stronger, as i know people with gen4 shit making more power than me and not bending anything.

gapped all my rings to 28-30 so its ready for some abuse.
i plan to hit it with 30lbs if the ignition system will let me.

motors built, reused the ls1 head gaskets, and slammed it all in and bolted up the trans and connected a few things, and thats where i am quitting for the day, think i might do a compression check tomorrow as soon as i get the converter tight and put the starter in, to see what kinda compression its at now, since it has flat top 5.3 pistons in it now, gunna have more squish

fairmont 5.3 tear down video

tear down and overview of the 5.3 i have been thrashing like it owes me money

fairmont 5.3 teardown

exciting to finally tear this motor down and check out what i believed the ring-lands to have butted and broken some ring-lands. to prove this we would have to see spotless pistons and broken lands only.

its nice to see we tore it apart and found exactly that, broken lower lands, from butting and perfect piston tops, people are also right about gen3 rods bending at 650+ because every single one of my rods is bent slightly lol. it seems like the rod is heaver material wise on the one side and thats the side they bend towards, hard to explain but they all bent around equally in the same direction bowing out in the center twoards the flexplate, rear or the motor.

should get my gen4 rods and pistons tomorrow and ill be opening up the gap on the rings and throwing them in.

it was neat to see, since pistons 1-3 broke, we checked the gap on them and they were like 18-19, then checking the gap on the other pistons that did not break, some were 24... just re confirming what people say about when you are pushing them you need to open the ring gap, but honestly it took bending the rods to break a ringland on this gen3. so i would say 600 is your limit probably might even be slightly bending rods at that power level.

non intercooled dyno results!

So results from tonight are padded quick from the other night, for some information...
dyno day i did 711 rwhp on 22lbs and a 125 rwhp shot with the intercooler attached.

tonight i did 697rwhp on 24psi and 15 deg timing, no nitrous non intercooled.
i bumped to 16deg and it made 684 i went to 15 deg and leaned it to 12.0 and it made 691, i made about 15 dyno pulls and half were over 675 but it was smoking like a whooooorreee tonight and the engine bay had nice little sprinkles all over it from the valve covers pushing out oil, and then it was smoking at idle, so i knew i hurt it, even though the damn thing has 18.6 inches of vac at idle! haha
its also idling rough wich is a give away in my experience, aside from the chimney out the valve cover vents

i have 5 cyls at 145psi and one at 125 and another at 50 and the last at 60.
cyl 6 has 125 and 2and 3 are the 50-60psi cyls
here is the plugs from 2 and 4

looks like i butted the ringlands finally, so i bought a set of gen4 rods and pistons wich are stronger off ebay used, and im gunna open the ring gap and fit the rings and try to hit this thing harder.

video of smokey the bear coming soon!

take a guess what it was!