Piston damage?

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Mar 9, 2017 | 08:49 AM

#41

c0ncEpT

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From: Shelby twp, MI

Quote:

Originally Posted by SS RRR

First I've heard of that. I always thought piston diameter was uniform from top to bottom.

This is why you usually don't see any signs of rubbing on the ring lands even tho a piston might rock over .030.

May 4, 2017 | 03:49 PM

#42

z28jimmy

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From: Lake Villa IL

Not a good update

Thought I would post an update to my situation.. Finally got the motor out of the car and brought it to Midwest Engine Tech who originally built it.. There was a lot more wrong than just one cracked piston.

#6 Lifter damaged
#1 - .012
#2 - .011
Crankshaft reluctor wheel damaged - .006 end play
Needs main/rod bearings
#3 Piston damaged
#6 Piston damaged
#7 Piston damaged
Rings worn
Timing set loose
#3 & #4 cylinders scuffed - Current bore is 4.030
Crank needs polish

May 5, 2017 | 11:13 AM

#43

z28jimmy

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From: Lake Villa IL

Has anyone ever seen this before? This is where the head gasket blew..

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May 8, 2017 | 11:26 AM

#44

z28jimmy

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From: Lake Villa IL

Some pics of the pistons

May 8, 2017 | 01:20 PM

#45

Shownomercy

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**** got hot.

Jun 1, 2017 | 01:49 PM

#46

z28jimmy

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From: Lake Villa IL

So now the question is what do I do? I have a good crank, rods, a block with splayed 4 bolt mains that needs to be honed.

Engine shop said it would cost 5 to 6k possible to get the whole thing back together.

Any suggestions? I am planning on using the car purely for going to shows/cruises and going to the drag strip a couple times a year. I wanted to go boosted route but with only one tuner in the area it kind of scares me.

Jun 1, 2017 | 03:47 PM

#47

SS RRR

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From: Jackstandican

If you want to go FI then go forged. If you are wanting to stay N/A then get another set of hyper-u's. What's going to be done on the rebuild for 5 or 6K?

Jun 2, 2017 | 09:58 AM

#48

z28jimmy

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From: Lake Villa IL

Quote:

Originally Posted by SS RRR

If you want to go FI then go forged. If you are wanting to stay N/A then get another set of hyper-u's. What's going to be done on the rebuild for 5 or 6K?

The good parts I have left are forged (crank & rods). For 5 to 6k it would be basically everything new.
Sonic test block
Pistons
Lifters
valve springs
bearings (All)
seals/gaskets
lifters timing set gears/chain
honing block and repairing the one cylinder head
assemble full motor

There was close to 2k in parts that I needed once I added them up.

I am really just looking for peoples thought on what they would do since I am saving up some money.