timing job, tq. specs? 5.4 3v

[Vdubnick]

my factory guides were in very good condition, as were all the roller followers. other than questionable marks on RH cam and broken screen on VCT solenoid, i probably would have been fine just changing the oil pump and tensioners. but since i had it all apart, figured it was worth going new.

that being said, if anyone wants good guides, chains and phasers with cams, ill sell them cheap.

 

[Vdubnick]

so, i took the factory oil pump apart for fun, found something interesting...


there is a channel that runs round the pump, guessing it is some sort of pressure eq. thing, but either way, there was a large portion with blockage. not sure what the material is, almost seemed like really fine ground plastic. I am not sure what affect it would have, but i am positive it isnt supposed to be there.

first thought was deteriorated gasket, but the channel is not continuous on one side, so it is def. not a gasket channel.

Edit:
looks like it is common buildup, due to mileage/etc. Per melling, the channel is to create a presurized seal. which, if you think about it, makes sense on the suction cavities, it prevents air from getting sucked in, and losing suction. its better to lose a little pressure head than it is to break suction.

with that gunk buildup, you run the risk of sucking air, and losing pressure... I would bet it causes cold start oiling issues, when pressure is lowest on suction (due to thicker oil)_ seems the oil pressure issue is from multiple problems.

 

[GlennSullivan]

OP
How did this all work out for you. Is the truck back to original power and mileage?

 

[Vdubnick]

OP
How did this all work out for you. Is the truck back to original power and mileage?

it will be a couple months til i pull something worth noting, but even just driving around town, the pedal feels lighter, mileage seems slightly better, but i didnt really see a problem around town, it was mostly when pulling a load on the highway, so we will see in april when i start pulling the boat around.

 

[Vdubnick]

OP
How did this all work out for you. Is the truck back to original power and mileage?

put a couple thousand miles on it this last week.... i was dissapointed at first, only got 14-15.5 on the interstate....BUT, i was going just over 85, and had a decent head wind. on the way back, going about 75, no wind, got around 18 mpg

also noticed on hills, at most it would down shift 1 gear, before the repair it was dropping 2 sometimes.