Ring gap/forced induction recommendation ***carnage pics inside***
03-22-2012, 05:57 PM
#83
TECH Apprentice
Finnally got back in town. I was just thinking the heat on the exhaust side of the piston.
I had an injector cause the same problem a couple of years ago It took me two pistons to find the problem! Leaned out on # 3 just enough to heat up and stress the upper ring land on the "hot side" of the piston. Not saying thats what happened here, just my experience.
I had an injector cause the same problem a couple of years ago It took me two pistons to find the problem! Leaned out on # 3 just enough to heat up and stress the upper ring land on the "hot side" of the piston. Not saying thats what happened here, just my experience.
03-31-2012, 08:13 PM
#84
On a side note did you recieve your parts yet???
Also Curious on what you decided to set your gaps at.
04-01-2012, 03:23 AM
#85
Today was the day. After sleeping in & a late breakfast with my bride-to-be, I headed down to the shop with my trusty sidekick. The engine is reassembled and in the chassis. The blower is on & torqued. After breakfast tomorrow, I'll head down to the shop again, and finish her up. Here's some pics from today.
#1 combustion chamber. You can see where the piece of piston made some marks.
New head gaskets.
Shop helper...
She thought she was in trouble...
7.250" pushrods for the Crane valvetrain.
All assembled & ready for the cherry picker.
04-01-2012, 03:58 AM
#86
From Hot Rod:
http://www.hotrod.com/techarticles/h...g_bang_theory/
Our guinea pig was a 5.3L truck motor, while the punishers were a pair of 76mm turbos from CXRacing plumbed into a homemade twin-turbo system. When we got it, the engine was a grimy core from a junkyard. We took it apart and found a pretty significant rust spot in the No. 8 bore that a ball hone wouldn't remove, but it was halfway down the bore so we thought, What the hell, we're trying to kill this thing anyway. It won't matter. The motor was reassembled using the original crank, rods, flat-top pistons, rings (a little rusty but they cleaned up OK), and bearings. The sole modification to the short-block (at the advice of Jerry Stetler from Ace Machine) was to increase the gap of the top rings from 0.015 inch to 0.028-0.030 inch (we reused the original rings). The second (factory gapped at 0.028 inch) and oil rings were left untouched.
04-04-2012, 01:59 PM
#90
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Glad it's back together... I figured if you had to wait another week that Blazer you were driving would end up with Lt's and the nos bottle in your office to hold you over LOL