Forcefed86

iTrader: (4)

I get the lean condition caused the issue, but there's a reason the "old school" guys ran big ring gaps with pump gas turbo setups. Just curious but did you check the gaps on the other pistons? How tight were they? Most of the time the ring pinches first and the piston ***** at an angle, then you get the melty looking crown from the added heat of the seized piston being shoved up and down the bore.

1CAMWNDR

iTrader: (21)

What are the specs on the new pistons? Stock replacements? Forged? Larger bore?

Agent_Orange_Shuvel

iTrader: (8)

looks like stock pistons and rods to me, just gen IV stuff.

It will be back together and making power in no time now lol

denmah

iTrader: (2)

yep i have 4 of them in and had some water line issues at my house, so that took up most of my day lol

Junkie

You try a few times, blow up a few pistons, then set it to kick in half a second before it blows.

denmah

iTrader: (2)

Monte4ever

iTrader: (2)

Man you don't be messin around lol.

FEAR LS

iTrader: (8)

Have you or has anyone tested the F-Body bulk heads for that same type of restriction? Do all Colorado's have this issue or do you think it was just yours? Just curious, I'm in the middle east right now and can't check this myself or I would. Thanks for any info.

69-chvl

iTrader: (11)

Brilliant insight, tell us more.

3 window

iTrader: (1)

I think it woul also depend on your tune and if it's on the ragged edge or not. The closer to the edge, the narrower the window for screw ups. IMO.

RatCityRex

iTrader: (3)

Matt, what radiator are you using? Stock 4cyl Colorado one? Coolent temps stay in check?

Tjabo

I think that was a fast fix even by your standards Matt! Lol

laytoncamaroz28

iTrader: (10)

Love the JFR cams! I'm running the 221 version with the same turbo and an lq9 and spool time is just awesome. You also running stock head bolts?

dirtylark71

iTrader: (2)

You going to do both feed and return lines 3/8?

denmah

iTrader: (2)

we have a stock hat car making 680+ without issue, but switched to return fuel system

i think all the colorado's have the same rad.
but yes stock rad, no temp problems, i havent driven in stop and go OCMD traffic yet either, but i dont even use the high speed part of the fan

eh it took a while to get pistons, and im busy working on my house, and a damn converter bolt stripped out, i would have gotten more done lol

i will just be replacing the feed for now to see if thats it

dirtylark71

iTrader: (2)

Sweet. what wastegate are you running on this deal? singe ebay? I'm going to do a 78/75 on my 5.3 since since the rad-hoe seems to be quite a beast. Side-note that should be the trucks name, just decided.

denmah

iTrader: (2)

just used stock replacements, it was all working fine till i pushed it out of fuel

denmah

iTrader: (2)

it has a single 38-40mm vband that cory johnson bought and welded in when i contracted him to do the hotside lol

im sure its just an ebay or VS style gate

getboost

I use that same fuel pump,and bench tested it, but dont recall this one having a bypass internally, could the pump be bad causing your issue. http://www.vepetersen.com/ fuel pump techinfoJeff@vepetersen.com 800 537 6212 from the factory. hope this helps: , awesome builds i like them all!

denmah

iTrader: (2)