My head job is real close to being complete. The head is torqued down per three stages. The intake and exhaust manifolds are on. I used anti seize on the e. manifold studs and replaced the bolts. The timing belt is on. Just need to do the hoses, and add the fluids. My question is this, when I put oil in the thing should I pour it over the entire length of the cam or is the lubricant that the machine shop used sufficient (the stuff they used is red)? I'm not sure if there is a break in recommendation. The cam is not new but the head was rebuilt.

BTW: if anyone out there has questions on this head job let me know. I got pics of a lot of it. Plus it is fresh in my mind.

 

The red stuff is a high pressure assembly lube. I'd just drizzle some oil over the valve springs and call it done.
Would pay to check the valve clearances though.

Regards, Andrew.

 

What you should do is buy some assembly lube and coat your cam lobes with it as well as your bearing races. You can pour oil over the cam but it will sling off immediately, and it won't get into the bearing races. Before starting the car you can either spin the oil pump with a drill, or you can turn the motor over for about 30 seconds with the plugs out so it doesn't start. You really don't want to start the motor with out pumping some oil up into the top end.

 

Interestingly, I've installed many heads in 20+ years and never pressure lubed one of them. It's no worse than starting an engine after a month or more of sitting idle.
The very WORST thing you can do to any cam is spin it over without the engine running, not enough oil pressure and oil to lube the cam lobes, especially if they are new.
The cam has assembly lube on it, it'll be just fine.........

Regards, Andrew.

 

well then i certainly wouldn't have you do any work on my cars then.

 

Well...I think that's a rather rude response to Typhoon's post.
I have nothing but the utmost respect for Typhoon,I've never seen him give anyone bad advice in any of his post.
Hopefully some day,we'll all have your vast automotive/Volvo knowledge.

And for the record I agree 100% with Typhoon.

Now lets get to your other post.


So your saying he should remove the cam,wipe off the assembly lube and reapply.
Volvo doesn't use bearing races in the head,nor anyone else that I can remember. (see pics for correct use of bearing races)
Volvo uses a gear driven oil pump off the intermediate shaft,kinda hard to spin it with a drill.
Spinning the engine over without the fuel pumps disconnected will wash the cylinder walls of oil in just a few seconds.(Even if the plugs are pulled)
The engine would not need to be pressure lubed unless it was completely disassembled.



Dan

 

Well speaking of rude and taking things that I say to the Nth degree. Here you go I'm good at posting pictures too. In this case I got this one from the Volvo Green Book for engine reassembly on a b21which unless metallurgy on and good engine assembly practice has changed.



Thats weird. They seem to recommend using heavy oil (or assembly lube) on the Cam, tappets and adjusting shims, and (this is weird because you just said there are no cam bearings in a head or ever were to your knowledge) bearing shells. Now i'm not a grand linguist or anything but when i look up bearing race in the dictionary it says. I ll leave the verbs and anthropological references out for now.

Race- The inner or outer ring that provides a contact surface in a bearing.

Huh, weird,

Ohh and yes you can spin an oil pump with a drill when the timing belt is off. You pull the oil trap, i'm sure you'll hassle me on my verbage here but you remove it and you'll be able to see the end of the shaft that drives the oil pump off of the intermediate shaft. Heres a picture for ya....


You see there is access to the end of that pinion and if you look in the hole on the end there is a little drive on it. And there is a volvo tool that fits in that drive so that it can be spun.

And you're correct about the gas wiping the oil off the cylinder walls, I could have been more specific in how to do it correctly. but i wasn't, and you stung me on it. Good job.

And stop calling it pressure lube, that is a company name from JAX. It's called assembly lube.

 

Just found this on the 2nd page.

I shouldn't have used the word "rude" I apologize for that.I should have used "sarcastic remark"(I wouldn't have commented in that thread if not for this remark.) Quote=adub96: well then i certainly wouldn't have you do any work on my cars then.End=Quote

I will answer your responses in order.

Metallurgy has changed,or is changing on a frequent basis,it's been changing since it's inception,many thousands of years ago.(I had to read several books on the subject,many years ago.)

I never said there weren't cam bearings or bearing shells.I said there are no bearing races,big difference.Quote=TURBO245: Volvo doesn't use bearing races in the head,nor anyone else that I can remember.End=Quote A lot of engines use cam bearing's and inserts,but...not bearing races.

I agree with the definition of bearing race,spot on.If you'll look at the 2nd pic I posted,it shows the inner and outer race with ball bearings in between,just like the dictionary says.Weird...no not really.

I never said you couldn't spin the oil pump with a drill.Quote=TURBO245: Volvo uses a gear driven oil pump off the intermediate shaft,kinda hard to spin it with a drill.End=quote
He apparently had his engine assembled except for the valve cover.That would be a lot of unnecessary work just to spin it with a drill.If this would have been a complete rebuild,and not just a valve grind,then yes,the oil pump should be spun with a drill.
He said his cam had been lubed when he got it from the machine shop.I think he called it"red stuff" Typhoon said to drizzle it with oil and call it good,and I agreed.You said oil would sling off immediately,and wouldn't get into the bearing races.

We mutually agree on the cylinder washing.

Yes there is an extreme pressure lube,Manley and Toroco produce them(two off the top off my head) and I'm sure a lot of other company's do as well.

I wasn't referring to assembly lube when I or Typhoon referenced pressure lubing.Pressure lubing or pre-lubing refers to,spinning the oil pump with a drill or the use of a stand alone pump connected to an oil passage.(where the oil pressure sender screws in,or several other oil passages on the engine.)


I'm done with this thread,so post what you want.I really don't have the time to argue with what I think is a twenty some year old kid.

I wouldn't be posting as much as I am,but I've been home sick with the flu.

I have a lot of projects for my self and others that I need to spend some serious time on.So I'll catch you guy's and gal's later.

Sorry to litter the forum with this.




Dan

 

Whadda ya know! I just installed a pair of cams in a motorcycle engine on the weekend, did not prelube or spin the engine up.
A bit of assembly lube on the lobes of the brand new camshaft and there's two more cams that didn't wipe out straight away. And a motorcycle cam on a 16 valve head has WAY more surface pressure on the cam lobes than an 8 valve shim over bucket head.
I'll take first hand experience and things that work over extensive internet forum knowledge any day...........

Regards, Andrew.

 

Clap.............clap..................clap.

 

Just finish up and start the car I'm sure it'll be fine.

 

She fired up. I got about 50 miles on it after the head job. Seems to be running smooth. I plan to keep an eye on the fluids and compression test it. Again if anyone would like advice from a guy that just finished the job shoot me a pm. I have pics and and quite familiar with the workings at this point.

 

pics man pics...