Get the overhead done? Or no?

[BigDiesel]

How much does an overhead cost? (just curious)

$264.99

[rigidsporty]

What all do they do... adjust the valves and inspect everything?

[Rev.Vassago]

What all do they do... adjust the valves and inspect everything?

Pull the heads, adjust the valves, check the jake and all the moving components in the upper end.

[solo379]

Well, the friend of mine, has ISX, at a bit over 400 grand, never run it. I mean overhead...
One suggestion, if you did experience fuel mileage drop after the last one.
Go to a different people for that service. Should be quiet the opposite, if it was done properly!

[Rev.Vassago]

Well, the friend of mine, has ISX, at a bit over 400 grand, never run it. I mean overhead...
One suggestion, if you did experience fuel mileage drop after the last one.
Go to a different people for that service. Should be quiet the opposite, if it was done properly!

I get all my work done at that shop, because I trust them. I may take it to the local Cummins shop, though. Depends how much they charge.

[heavyhaulerss]

I think it depends on who does the overhead. just because you brought it to a k.w. dealer or any other shop, does not mean much. one day they might have a a person doing the overhead that was trained to do it a specific way & another time at the same place you may get someone else who was trained to do it slightly different.


I had mine done 4 months ago & after driving my truck for 10 years & having the overhead done every 100,000 miles this last time done at freightliner in decatur al, my truck has more power then it did when I first bought the truck. it does blow out a lil more black smoke from the stack, but the m.p.g. is better & the power was increased by a noticable difference. srange to me to have a truck with over 1.1 mil miles perform better than when it had 400,000 miles.


but that is the case with mine. now I am afraid when the time comes for my overhead that if i take it in it will not perform as it is now.

[Walking Eagle]

I have a C16 600 ( turned up a little bit with PB power) and have it done every 100,000 miles. Even with the PB power I notice the difference in power but no drop in MPH.

[allan5oh]

I thought cummins factory recommendation was 500,000 miles? I remember reading that on their site, maybe that's the new ones.

Anyways, solo is absolutely right, if you noticed a loss, something wasn't done right.

There is more to the valve job then simply fuel mileage. Too tight and the valves hang open too long. This is especially bad for the exhaust valve, it can burn out. Too loose and the valve doesn't open enough, and it's hard on the valvetrain.

[no_worries]

Actually Allan, I think you're right. I think that's why I was curious in the first place that the KW shop was saying I should get it done every 100,000 or so. I'd go look in my manual...but the truck's in the shop

[Dejanh]

I got mine done at my frth 2 days ago, its a 4 hr job, 575$ here w/taxxes.

I dont know anyone who paid what the Rev. said, all places that I have checked were over 400$...

Oh yeah, i went 252K miles and never done it, i gets 6.3 average for all the time used including idling.

Now, we will see..

[Orangetxguy]

Mine two weeks ago was $315.00. The one I had done last year was $284.89...at the same shop.

[Rev.Vassago]

I got mine done at my frth 2 days ago, its a 4 hr job, 575$ here w/taxxes.

I dont know anyone who paid what the Rev. said, all places that I have checked were over 400$...

I just called Peterbilt in Green Bay, WI. 3 hour job, $250.

[Dejanh]

I got mine done at my frth 2 days ago, its a 4 hr job, 575$ here w/taxxes.

I dont know anyone who paid what the Rev. said, all places that I have checked were over 400$...

I just called Peterbilt in Green Bay, WI. 3 hour job, $250.

Thats a good price...

I've been at ALL dealers here and none have quoted me near that...

Detroit wanted 575$ before taxes and shop supplies.. :shock:

[Rev.Vassago]

I love my Peterbilt dealer. They know me by name, their rates are reasonable, and my next oil change there is free. 8)

[mikeymike]

I called Volvo about having mine done. They said if it aint broke don"t fix it. No noisy valves no drop in fuel mileage. By the way I stay consistently @7.3mpg. Ved 12 motor 761K.

[Scottt]

Had mine done at the Peterbilt dealer last Thursday and it cost $310

Left for California Friday morning and didn't notice much difference until I hit the mountains. Going up the grade it smoked like a freightrain on fire and started running hot. I had to stop 5 times going over Flag to let it cool off. Going down the grade my Jake brake wouldn't hold.

I called Peterbilt and gave them a piece of my mind and they told me to bring it in and they would have their real Cummins mechanic work on it. I said who did the overhead the janitor? They said just bring it in.

I am done with Peterbilt of Des Moines after tomorrow if they get it fixed.

I had always heard a overhead was only as good as the person who does it and now I know that's the truth.

[NotSteve]

I got mine done at my frth 2 days ago, its a 4 hr job, 575$ here w/taxxes.

I dont know anyone who paid what the Rev. said, all places that I have checked were over 400$...

I just called Peterbilt in Green Bay, WI. 3 hour job, $250.

Thats a good price...

I've been at ALL dealers here and none have quoted me near that...

Detroit wanted 575$ before taxes and shop supplies.. :shock:

Detroit seems to all be around that price. I don't know why, it only took about 3 hours for mine but they did replace my Jake brake spring.

[allan5oh]

I called Volvo about having mine done. They said if it aint broke don"t fix it. No noisy valves no drop in fuel mileage. By the way I stay consistently @7.3mpg. Ved 12 motor 761K.

They're crazy.