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So how does it run? Is the noise gone? What oil did you use?
disappointed during repair.
- Thread starter FowVay
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Originally Posted By: artificialist
Originally Posted By: Merkava_4
Originally Posted By: gregk24
Dont all engines with timing chains have guides and tensioners?
Pushrod motors don't.
Back in the past, they may have been built without tensioners, but sometime later, tensioners were used with some OHV engines. The Chevy Caviler is the first example that comes to my mind.
Also, older OHV engines still had timing guides. There would be a triangular shaped block that matched the space between the upper and lower sprocket.
Most old V engines used none, the cam and crank sprockets were very close to each other, a tensioner would be pointless.
On engines like the 2.0 in the Cavalier with an offset cam gear or with more distance between the sprockets they used a tensioner/slipper.
Originally Posted By: Merkava_4
Originally Posted By: gregk24
Dont all engines with timing chains have guides and tensioners?
Pushrod motors don't.
Back in the past, they may have been built without tensioners, but sometime later, tensioners were used with some OHV engines. The Chevy Caviler is the first example that comes to my mind.
Also, older OHV engines still had timing guides. There would be a triangular shaped block that matched the space between the upper and lower sprocket.
Most old V engines used none, the cam and crank sprockets were very close to each other, a tensioner would be pointless.
On engines like the 2.0 in the Cavalier with an offset cam gear or with more distance between the sprockets they used a tensioner/slipper.
I have a '97 Nissan pickup with the exact same problem. I pulled the valve cover off and looked down the chain and saw the same thing. I put it back together though and do not really plan to fix it. The truck needs to be retired. It has 285 k on it.
Could be worse. I know on the new release of the Frontier in 2005 the V6 saw timing chain guide failures as early as 20K. I had a 2007 and it was becoming apparent (started to have a supercharge type whine...) at almost 70K last January, decided it wasn't worth the $1500 repair as it needed more work and traded it in.
Yeah, this truck has been exceptionally reliable - aside from a couple alternators and a starter. But it has the OE clutch, needs a throw out bearing and the chain and guides. The cost to repair it could be used to buy a much newer one.
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