Nissan Frontier Forums: 98 Frontier - Slack in upper timing chain

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Topic: 98 Frontier - Slack in upper timing chain

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cali98
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Posted: Apr 26 2009 at 12:06pm \| IP Logged

Howdy Folks,

I need some advice on the upper timing chain on my 98 Nissan Frontier. After reinstalling the lower and upper timing chains, the upper timing chain seems to have some slack. I started this project back in 9/08, so I don't remember if this is what the chain looked like when I removed it.

I removed the tensioner so I could rotate the chain around to see if the chain may have been stretched.

Even with the upper tensioner installed I still have the slack. When I rotate the the crank shaft around, the tensioner will move in and out. The slack will rotate around the gears so you can have the slack on top or on the right side.

Does this look normal for an upper timing chain:

upper_chain

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1998 Frontier 203k miles
-almost running
lower guide broke
bent intake valves
rebuilt cylinder head

lakota
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Posted: Apr 26 2009 at 9:59pm \| IP Logged

1998 model Frontiers were all 4 cylinders. Sorry but I'm Not familiar with daul OHC engines Hopefully others will tune in to help. Here's a PIX of an 86 Nissan chain.

http://my.inbox.com/photos/zewyka/index.aspx

Have a good one while you can still laugh about it.. Don S..

America got strong and rich by jobs manufacturing and selling products. Not by importing junk and outsourcing! Or being run by politicians paid off by Wall Street bankers!

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PLEASE >>> A SIG similar to mine can be VERY HELPFUL to all the members!
'99 4x4 3.3 Frontier Se KC Auto, 48,000 miles
'76 4x4 401 Wagoneer QT
'04 FWD 1.8 Sentra '08 FWD 2.4 Camry LE
Fort Worth

lakota
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Posted: Apr 26 2009 at 10:19pm \| IP Logged

I found a view of the chain at Trophy Nissan in Texas:

http://www.mynissanparts.com/parts.html

Don S..

cali98
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Posted: Apr 26 2009 at 10:59pm \| IP Logged

Thanks Don,

My lower guide broke and sent the timing off bending the intake valves. I was wondering if that caused something to create the extra slack that's shown on the top side of the chain. Even with the upper tensioner installed, I still have the slack. Does anyone know if this is normal for a 98 Frontier?

Thanks,

Mike

__________________
1998 Frontier 203k miles
-almost running
lower guide broke
bent intake valves
rebuilt cylinder head

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