Cloyes timing chain1/12/2024 I think the sprockets would need to be really worn before the difference was easily noticeable. If the chain is worn enough to warrant replacing, the sprockets will not match the new chain and may even stretch or damage it. If you get a new chain, get new sprockets to go with it: as the chain stretches, the sprockets wear to match it. ![]() Im tempted to just get new guides and chain, and leave the rest. I also thought that those guides looked like they were made of cheap plastic too. I compared the gears to original, and hardly noticed any wear from the 'new' crappy ones. They were about $20 less than Rock Auto for the same set. It was from Amazon, so its an easy return. Its just happened to be the first of my parts to arrive. If 25-30 it was going to rattle when it was done and set vvt codes.I'm rebuilding the engine, is the reason for changing it. He found if they had one with chain or phaser rattle and over 30 at the filter hot, it would live after new timing parts. His experiments are also where the 30 PSI hot comes from. Our conclusion is that the tolerances and wear stacking up was enough to drop oil pressure to the right head. There was nothing out of spec but a lot close to out of spec. He stripped that engine bare on an engine stand and started measuring (he had some machinist experience as well). It didnt fix that one and he wound up putting an engine in it. He went as far on one as new (not reman) Ford cylinder heads and cams, and plumbing an external oil line from I think the oil pressure sensor to the right head oil galley and a high volume oil pump. He made it his mission to figure out how to fix one of those trucks with phaser rattle. 5-10 years ago when those trucks first really started exhibiting problems a good friend of mine was a service manager at a Ford dealer. The right timing chain tensioner is the last thing in the engine that gets oil, right VVT is inline before it. Maybe the folks that have had problems didn't put it on right? I do have appropriate tools like an inch-lbs torque wrench.Ĭlick to expand.Its not even so much the scoring in the heads as it is tolerance stack through the entire engine. Is this fear of having the Melling kit not last very long rational? It is the Melling "Professional Grade" kit that I got, not the "Service Grade" one. I just don't want to have to open the front cover again after 20,000 miles, period. I could buy the cast iron tensioners separately without the kit, and use the Ford guides and chains. I am thinking of sending it back and getting the OEM chains and guides, but I still want to use the cast iron tensioners, and the Melling oil pump. I dunno, but I am having a crisis of confidence on this kit. I also purchased the M360HV oil pump since I am planning on taking the front cover off. Yet, FTM does use the Melling oil pumps on these 5.4 3Vs so what gives? I thought Melling was a quality brand. There seems to be so many dire warnings on his channel and other places on the Internet about only using OEM parts on this engine. I saw FordTechMakuloco's latest video on YouTube where someone had done an aftermarket timing job using what looked to be the Dorman kit and the guides were chewed up after only 20,000 miles. Now, I'm having 2nd thoughts about the Melling chains and guides. FYI, you can use the cheese wedge tool to slacken the chain in order to change out the phasers later without taking off the front cover, so that's what I'm thinking to do when I save up some more money. It is ticking a bit on startup so I wanted to take care of the tensioners and figured I'd switch out the guides and chains at the same time, as well as the crank sprocket and the oil pump. The timing kit didn't include the phasers or VCT solenoids but I am not having any problems with those so I was hoping to put those off a few months. I also got the Melling high volume oil pump since I'm taking off the crank sprocket anyway. ![]() So this week I bought a Melling timing kit for my Ford 5.4 3V engine, I got the kit with the cast iron tensioners, guides, chains and crank sprocket.
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