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ZUKIWORLD Discussion Forum => Technical Discussion - Beginner / Repair => Topic started by: Jackdar on October 27, 2010, 06:47:28 AM

Title: 1.6 8V broke a rod
Post by: Jackdar on October 27, 2010, 06:47:28 AM
Luckily didn't go through the block or do too much damage to the crank. Putting new pistons and rings, rod bearings, the one broken rod and all new gaskets. This is a 94 2wd Traker that I bought for my gf.
Title: Re: 1.6 8V broke a rod
Post by: wildgoody on October 27, 2010, 09:03:57 AM
OK, which rod? and why did it break?
They don't just decide to break, it's usually another
problem or did you just get lucky?

If I had to guess I would say it's #1 and your oil pump failed OR
the stupid pressure relief valve got stuck open and you went low
on oil pressure, either way, don't rebuild without figuring out why
it broke, or history might just repeat

Wild
Title: Re: 1.6 8V broke a rod
Post by: bentparts on October 27, 2010, 04:08:55 PM
That's exactly why I installed a good oil pressure guage. Never trusted the idiot lites.
Title: Re: 1.6 8V broke a rod
Post by: Jackdar on November 02, 2010, 06:36:23 AM
It was #1, looking at what was left of the old rod ,I found that it had been broken across the oil hole for a while(not a fresh break) just finally turned loose. I'm going back with a new oil pump and a oil pressure gauge just to be on the safe side. I think a previous owner may have been into the motor(RTV on oil pan..lack of timing belt cover).
Title: Re: 1.6 8V broke a rod
Post by: wildgoody on November 02, 2010, 07:50:01 AM
Do you mean the small end of the rod broke? I can't
remember any other oil holes in the con rods

Wild
Title: Re: 1.6 8V broke a rod
Post by: Jackdar on November 02, 2010, 10:13:52 AM
Big end...yep theres an oil hole
Title: Re: 1.6 8V broke a rod
Post by: wildgoody on November 02, 2010, 07:03:03 PM
OK, it's been too long since I dug into a Zuki engine I guess.
So was the rod discolored or at all darker that the rest of the rod?
or did it just let loose???
Title: Re: 1.6 8V broke a rod
Post by: Jackdar on November 02, 2010, 07:18:33 PM
No heat darkening at the break....guess the 163k miles did it in. And I have got an oil pump ordered before I finish the rebuild. Gotta get her Tracker right, gonna need my Dodge...getting to cold to be riding the Goldwing now.
Title: Re: 1.6 8V broke a rod
Post by: wildgoody on November 02, 2010, 10:29:58 PM
Must of been a defect in the forging, I had 230K miles on my
engine when I rebuilt it with the turbo, never had that failure,
but I lost an oil pump that about destroyed the whole thing

wild
Title: Re: 1.6 8V broke a rod
Post by: Jackdar on November 04, 2010, 01:25:47 PM
Oil pump is in....will report again after install
Title: Re: 1.6 8V broke a rod
Post by: Jackdar on December 03, 2010, 06:41:52 AM
Well I had to get a block....many thanks to Sean in Chesapeake. Thanksgiving guests helped pull the old one and came back Sunday to drop it back in. All is well now.
Title: Re: 1.6 8V broke a rod
Post by: wildgoody on December 03, 2010, 07:15:50 AM
What happened that you had to get another block?
Title: Re: 1.6 8V broke a rod
Post by: Rhinoman on December 03, 2010, 11:31:49 AM
I've seen a few break rods, they all had cracked blocks. I wonder if the block distorts and siezes the piston.
Title: Re: 1.6 8V broke a rod
Post by: Jackdar on December 03, 2010, 12:32:55 PM
Rod took out a section of the oill gallery...didn't seen it the first time I dropped the pan