Blown Motor, Engine Rebuild/Replacement.

Chuck33079 · 02-10-2014, 12:11 PM

What part broke, piston or rod?

COSMO · 02-10-2014, 01:46 PM

The motor will be out tomorrow and I'll will know for sure but I'm guessing a rod. The valves are intact...

Quote:

Originally Posted by Chuck33079

What part broke, piston or rod?

Rusty · 02-10-2014, 06:15 PM

Quote:

Originally Posted by cosmogirl

I managed to get a little more prep ready for the engine to be pulled out tomorrow. Here are a few pics and yes that is metal chunks sitting on top of the valves..

Quote:

Originally Posted by Chuck33079

What part broke, piston or rod?

Looks like part of a piston land sitting behind the right valve.

zguynate · 02-10-2014, 06:19 PM

Quote:

Originally Posted by Rusty

Looks like part of a piston land sitting behind the right valve.

Thats what I was thinking. You would think if it was a piece of rod, it would have to get past the piston. If it did that its a lot worse than just the rod lol. Im thinking broken ring lands.

Rusty · 02-10-2014, 06:38 PM

Quote:

Originally Posted by dragonbreath

Thats what I was thinking. You would think if it was a piece of rod, it would have to get past the piston. If it did that its a lot worse than just the rod lol. Im thinking broken ring lands.

If it was a rod. Chances are, it would be out of the side of the block. Be real easy to see then.

Rusty · 02-10-2014, 06:48 PM

Years ago. I worked on a ferd 300ci straight 6. The guy said it was down on power, but had no strange noises in it. When I removed the head. I had two pistons at top dead center.

Turned the crank over by hand, and watched all of the pistons move, but #6. Removed the oil pan and everything looked good.

Unbolted the rod cap from #6 and pushed the piston and rod up. What happen was the piston broke in two at the oil ring land.

No damage to the cylinder wall. Got another piston and new rings and install it.

Hopefully your motor could be like this.

02-10-2014, 12:11 PM	#1 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29540	What part broke, piston or rod? __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

02-10-2014, 06:48 PM	#6 (permalink)
Rusty A True Z Fanatic Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 70 Posts: 35,581 Drives: 2011 Nismo GM 6M Rep Power: 2684440	Years ago. I worked on a ferd 300ci straight 6. The guy said it was down on power, but had no strange noises in it. When I removed the head. I had two pistons at top dead center. Turned the crank over by hand, and watched all of the pistons move, but #6. Removed the oil pan and everything looked good. Unbolted the rod cap from #6 and pushed the piston and rod up. What happen was the piston broke in two at the oil ring land. No damage to the cylinder wall. Got another piston and new rings and install it. Hopefully your motor could be like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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