On some start ups it will blow some white/blue haze (smells like oil) smoke for a few seconds as the EGT rises.  Also, if I sit and idle for extended periods, like 5min, when i continue driving it will blow the same color smoke as soon as my egt rises above 500-600.  Once it burns the oil out, it doesn't come back, and the truck runs the same smoking or not.  

 

The truck runs fine, and uses some oil, but not much... Mabe a quart every 2500 miles at the most.  i haven't actually measured it.

 

 

I am wondering if I am getting excessive oil going down my exhaust valves, and coating the exhaust... either from worn guides or worn seals.  

 

I am going to have the rockers off soon for a head stud install, does it make sense to you guys to change the seals as well?  

 

And anybody have a good source for a complete Injector & Crossover O ring and valve seal kit? I want to change the O rings as they should be set and are more likely to leak if reused. 

Open your oil cap and leave it on the opening if it bounces up and down by the gasses you need to rebuild. If not your rings may be okay.

 

You could have valve seals go out but if the head had gotten that hot in that little mileage I would be concerned other things may need to be looked at. Pull the turbo at the exhaust flange if you have oily residue on the exhaust manifold side I would be say your valve seal theory is correct.

 

We will see what it looks like, I don't have hardly any blow by.  I recall some oily residue in the manifold when I changed my turbo.  

Like in my case I don't have any kind of serious blow by. Just the light vapor that drifts from under the truck from the vent pipe.. Like a lot of trucks are starting to lose tappet cover gaskets and other rubber seals.  It's possible the seals had enough heating and cooling cycles to make them brittle and start to leak?   I'll have to admit I've done a few startup and run to the fire house without much warm up periods. Some times blow past the fire house and go directly to the scene. So in my case I know the engine has some abuse.

 

As for CSM he'll have to speak for himself...

Like in my case I don't have any kind of serious blow by. Just the light vapor that drifts from under the truck from the vent pipe.. Like a lot of trucks are starting to lose tappet cover gaskets and other rubber seals.  It's possible the seals had enough heating and cooling cycles to make them brittle and start to leak?   I'll have to admit I've done a few startup and run to the fire house without much warm up periods. Some times blow past the fire house and go directly to the scene. So in my case I know the engine has some abuse.

 

As for CSM he'll have to speak for himself...

 

It turns out the truck was owned by a Cyclone rig hand and ran hard enough to shell 3 transmissons in 40k.  I didn't learn that until I called up the guy who "built" the trans.  Stories didn't match up.  

It turns out the truck was owned by a Cyclone rig hand and ran hard enough to shell 3 transmissons in 40k.  I didn't learn that until I called up the guy who "built" the trans.  Stories didn't match up.  

How much blowby?

 

Also i would check the engine out starting with oil analysis prior to opening it up. Just to see what could be there.

How much blowby?

 

Also i would check the engine out starting with oil analysis prior to opening it up. Just to see what could be there.

 

There is no blowby at idle.  It may have some under load, but I can't really measure that.  

 

I pulled the valve cover and some of the valve seals are split. I couldn't see any on the intake side that were bad, but I found at least one that was broken on the exhaust side.  

They are easy and cheap to replace.... I'd just replace them but I also have a money pit for a truck

They are easy and cheap to replace.... I'd just replace them but I also have a money pit for a truck

 

Yeah, I am there too. Trans, turbo, huge number of programmers, etc.  I've got the truck almost where I want it mechanically and interior setup.  The only other mechanical mods I want is cam, replace the u joints, drive shaft to one piece, and I have a borgeson box on backorder. 

If you hold your ear next to intake filter /bhaf do you hear a tick Comming from engine ? Always thought that was best way to tell

Did your replace the seals ?Supposedly you cant do tophat without machining.

Still curious on 2 things

 

1) Did you hear any ticking from the air intake ? Would think with bad seal would tick heaviliy

2) How did you determine bad seal to begin with with all the oil in the head galleys around springs etc

Did your replace the seals ?Supposedly you cant do tophat without machining.

Still curious on 2 things

 

1) Did you hear any ticking from the air intake ? Would think with bad seal would tick heaviliy

2) How did you determine bad seal to begin with with all the oil in the head galleys around springs etc

no tick... I don't know why a seal would tick though. I haven't changed them yet. 

As for the bad seals I could see some tears in the seals on a couple cylinders.   I expect that I have some worn guides.

I think part of my cause of short valve seal life is the amount of exhaust brake usage I have. Placing a lot of pressure on the exhaust valves stems. I'm going to gamble mine are going to be the exhaust side more so.

I'm wondering if I should swap the cam while I'm in there.   

Valve seals and a cam are two completely different ball games.... popping the valve cover, rockers, and springs off are cake. Ripping the whole front end off isn't quite as quick / fun

Edited October 19, 20159 yr by TFaoro

No doubt about that... Radiator, coolers, etc. Then pull the gear case open, make rods for the tappets and lift then and then pull the cam. Not fun at all... I've never done it yet but I know sooner or later I will...

ANY UPDATES ?? 

My valve spring compressor is FINALLY here.  It was backordered.  I have been holding off due to a lack of time.  If I ever get the borgeson steering box I ordered two months ago arrives I will get to it.  The box is backordered indefinitely. 

I haven't heard much good about borgenson.... redhead seems like the better option to me???

Really... When I searched I found the opposite.  I am not sure who to trust.  

SMH it's probably a toss up....

I've had a Borgeson steering box and shaft for a few years now. For how much I paid for them I'm really not impressed. Having a little quicker turning ratio is nice but other than that it really made no difference how the truck drove. I would cancel your order and give Ryan at blue top steering gears a call.