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Forums > > $67 Cure for VQ35 Timing Chain Rattle in 05 Quest
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  #76  
Old 06-05-2017, 08:34 PM
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Originally Posted by RFKJR View Post
I built the piece up a little more before installing it for good. I also made the pocket the tensioner fits in a little deeper. I'd really like to know what the experienced Nissan gurus think about this attempted fix.
I really like that. What did you make this out of and how did you "build it up"?

Is there any threat that the tensioner could pull back and this part would "float" possibly falling down into the engine?

Thanks!
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  #77  
Old 06-06-2017, 03:20 AM
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I made it out of pieces of flat steel, and thick 1/2" flat washers. It is mig welded together, and I built up the tabs on the end until they were the height I thought was best. I wanted the tab on the left side in the picture to be close to the steel part of the tensioner that the plastic rides on, so some of the pressure from the tensioner would be applied to the metal as well as to the plastic piece. The tensioner only moves out, as the spring clip keeps it from being able to retract when oil pressure is zero. I had asked for gurus opinions on this, as in my mind even if it fell out it couldnt go far and would likely sit at the bottom of the front cover where it meets the oil pan. IT has been running since the end of March, and has about 6000 miles on it. So far so good.
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  #78  
Old 09-05-2017, 06:33 PM
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Did you insert the custom metal piece onto the tensioner thru the tensioner cover or did you remove the timing chain cover to install?

Is the custom metal piece still working correctly?

Is the timing chain quiet when starting cold engine?
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  #79  
Old 09-06-2017, 11:02 AM
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Default Tensioner mod

Yes I inserted the piece I made through the tensioner opening in the front cover. I was changing the water pump when I found the guide had slid down. I didnt want to remove the front cover, so I decided to try making something to keep it up in place. Also, I believe the chain direction is from bottom to top when operating, so really you just need to keep it from slipping down when oil pressure is at zero. The car is still running fine, very quiet. No noise on startup.
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  #80  
Old 09-06-2017, 11:50 AM
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The metal piece (tensioner bracket) appears to be a solution to the broken guide. Nissan should never have made the chain guide with plastic after all of the broken guides.

Were you able to reach your hand or a tool thru the tensioner opening and simply slide the timing chain guide up and slip into the slot of tensioner bracket?

Could the tensioner bracket be cut\formed from a solid piece of soft alloy? Start with a square piece of the alloy and cut\file into the finished shape?

Do you know the dimensions so it could be duplicated?

Last edited by dougb@mnsoft.com; 09-06-2017 at 01:22 PM.
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  #81  
Old 09-06-2017, 03:44 PM
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I removed the chain tensioner which is necessary to change the water pump. It's easier to remove it and put it on a bench and release it to reset it then it is to try to reset it in the vehicle. Plus I replaced it with a new one because the gasket molded into the bottom of it was not in good condition and I didn't want to take any chances. I slipped the piece i made in along with the tensioner, bolted up the tensioner and then pulled the grenade pin on it to release the tensioner. I made the piece out of things I had in my shop. I wanted the piece to be held in place by the two washers at slipped over the end of the tensioner push rod. They make it where the piece cannot slide down off the plunger. It is trapped there. I suppose you could make it out of anything you wanted to. If you had access to a machine shop you could probably machine it all out of one piece and not do any welding. Mine was trial-and-error till I got it to fit just the way I wanted it to with welding and grinding and welding and grinding. As far as deminsions, unfortunately when I got it the way I wanted I put the thing together. You could kind of look at the pictures and get some ideas but really I made it to fit exactly the way I thought it would work best and it has worked well so far.

Last edited by RFKJR; 09-06-2017 at 03:48 PM.
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$67, chain, cure, quest, rattle, slack guide, tensioner, timing, vq35

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