Posting this info' hoping it will help someone out there and maybe save some dosh.
I thought I'd spend time checking the timing chains wear before spending tonnes of money on a good duplex kit. Good job I did.
timing chains can be reliable.
I have a 2009 (58plate) Pathfinder (euro4), 125,000 miles on her now, Full stamped Service History. We are second owners from the last six months, The oils were done every 12 months. The engine front end is silent on cold startup and as quiet when hot.
I carried out the inspection as per YD25.comAu website, Very Helpful info.
Job took me about 3 hours to do.
Firstly I checked the duplex chain Cam timing Tensioner, measurements said the chain had only 25% wear. This was done by measuring the tensioner piston protrusion (this part pushes on the guide to stop chain slap). It was only 8.5mm. 6mm is new, 12mm is half worn and 18mm is worn out. Looking good. All chain guides and gear teeth looked in excellent condition. I was surprised how smooth the chain guides were,I'd have expected a little grooving in them. No sludge build up or black particles apparent in the chain casing area.
I then painfully measured the primary chain wear, this is done by using feeler gauges between each chain link and adding up the amount of stretch. 46 links later I came up with only .83mm Stretch. This is obviously good, over 50% of the links measured were still as new having a .38mm gap. Both Chain colour ID's were yellow /white combination this is the french chain correct on vins starting with VSK. This confirmed they were original parts, the first owner said the timing chains had not been done. This is why I was kacking it thinking it was going to go bang. :nailbiting
I have come to the conclusion that because the engine has had 12 monthly oil changes this must have helped preserve the front end components, even though it was doing 24,000 miles a year!.
Keep up the GREAT work on this site.
:awesomework :awesomework :awesomework
Where would we be with out you?............
Getting Screwed by Main Stealers!
:faint
I thought I'd spend time checking the timing chains wear before spending tonnes of money on a good duplex kit. Good job I did.
timing chains can be reliable.
I have a 2009 (58plate) Pathfinder (euro4), 125,000 miles on her now, Full stamped Service History. We are second owners from the last six months, The oils were done every 12 months. The engine front end is silent on cold startup and as quiet when hot.
I carried out the inspection as per YD25.comAu website, Very Helpful info.
Job took me about 3 hours to do.
Firstly I checked the duplex chain Cam timing Tensioner, measurements said the chain had only 25% wear. This was done by measuring the tensioner piston protrusion (this part pushes on the guide to stop chain slap). It was only 8.5mm. 6mm is new, 12mm is half worn and 18mm is worn out. Looking good. All chain guides and gear teeth looked in excellent condition. I was surprised how smooth the chain guides were,I'd have expected a little grooving in them. No sludge build up or black particles apparent in the chain casing area.
I then painfully measured the primary chain wear, this is done by using feeler gauges between each chain link and adding up the amount of stretch. 46 links later I came up with only .83mm Stretch. This is obviously good, over 50% of the links measured were still as new having a .38mm gap. Both Chain colour ID's were yellow /white combination this is the french chain correct on vins starting with VSK. This confirmed they were original parts, the first owner said the timing chains had not been done. This is why I was kacking it thinking it was going to go bang. :nailbiting
I have come to the conclusion that because the engine has had 12 monthly oil changes this must have helped preserve the front end components, even though it was doing 24,000 miles a year!.
Keep up the GREAT work on this site.
:awesomework :awesomework :awesomework
Where would we be with out you?............
Getting Screwed by Main Stealers!
:faint