Correct 328 head torque

Just for grins when I put my heads on in the next week or two I could observe and make note of how many degrees it takes to go from 33 to 72 ft/lbs although it will be the 11 mm QV studs so not sure if the information would be worth anything in this particular case. Even if it turned out to be exactly 120 degrees it would just be something else to scratch your head about so probably not.

 

Hi John,

sorry for this misunderstanding. Shouldn't be any offense. And of course they are versatile and reliable vehicles, if maintained well, what our's unfortunately was not.

But somehow funny, that just last week I mentioned, that rarely anyone complains about going off-topic. What I like.

Best Regards
Martin

 

I have no idea. Call and ask.

 

Those head gaskets do not have enough compressability to deform over the uneven surface formed by the deck and liners. The material was changed when the production moved to Spain. The 4v heads dont have the rigidity to cope with that well. I'd bet you would also have had valve leakage had you tested for it. When all this first happened a few years ago I was putting an F40 together (those have 11mm studs) and I didn't even need to pressurize it. Water ran out as I was pouring it in.

 

Analyzing, that 100Nm seems to be completely wrong for a fine thread M10 bolt or stud, especially since the compression further adds to the stress of the studs, I wonder whether snapped studs are a common problem on these engines.
I almost don't dare to say it, but calculation of a bolt joint is a complex issue and those tables are not always applicable.
I think, those 100Nm are for installation a head with a new head gasket. It would be interesting to know, how much prestress remains on the joint after a few hot-cold cycles.
That said, I think it's not a good idea to retorque heads with 100Nm

If interested:

https://mechanicalc.com/reference/bolted-joint-analysis

Best Regards
Martin

 

Ferrari always maintained no retorque.

 

Brian,
and therefore I never cared for my head nuts. But this reminds me of an older topic, discussed here. I have read -after I had my valve covers off for the last time, so I couldn't check- that there's occasionally a loose nut on the 2V-engines. Loose means, far below preload achieved with 100Nms. What do you think, what could cause this? And if I would find one, what's best to do? Like agreed, retorquing to 100Nms is no option.

Best Regards
Martin

 

That does not apply to your car, only the motors that torque to a number of degrees. Nothing in the world wrong with retorquing and to the full torque a motor with the standard studs
The factory says to retorque yours and many do it every valve adjustment. .

 

O.k., thanks. So, in around 5000 kms I will pull the torque wrench. I'm curious. Never touched my head nuts. Since 60.000kms I have the car. (125.000kms on the car).
No problems so far.

Best Regards
Martin

 

He's Brian. Visible in the header.

I would never worry about anything from Dave. I still remember the research and efforts, I watched, and discussion with him here, back then before he launched his fuel and coolant hose line around ten years (?) ago.
It's a pity, that he's meanwhile rarely 'seen' here on the 308/328 subforum, though being still active on FChat generally.

Best Regards
Martin

 

Hi John,

I just wanted to say 'why inventing the wheel once more, when others -reputable and reliable- have done it already with a lot of effort?
Though I don't know, how much Dave charges for his head gaskets and studs.
His fuel hoses were very expensive, yes. But for such important parts I have no problem to make a one-time investment which is much more, than for the crap I get everywhere. And I consider it as a support for folks, who are constantly working on quality parts supply for us. If noone purchases their expensive -at first glance, later it pays for itself- parts, sources will run dry and we will have to make do with scrap parts.
Same with Verell's - Unobtainium Supply - remanufactured plastic parts. They seem to be expensive. But only because some folks constantly compare their prizes with massproduction coming from the Far East. Luckily most are happy though, that those parts are available at all again.

And when it comes to existential important parts, the less we talk about SF UK, the better. No wait, even their window switches ended in my garbage can and I rebuilt my old ones.

But I just see, you started too, calling all this 'arguing'.

Best Regards
Martin

 

Meanwhile I found another headgasket from the second german well known gasket manufacturer besides Elring. I'm getting more and more curious about what's going on with these headgaskets. They are from 'Victor Reinz', - OEM Bugatti Veyron among others - and though the dealer, where I found them, is not known for being the cheapest, they are € 130.00/each.

Best Regards
Martin

 

It's $500 from Ferrari.

 

I researched further. My mistake. The headgaskets I mentioned are not Victor Reinz. It seems, that they are custom made exclusively for this parts dealer. Only the base material is from Reinz.
I love such things; The dealer somehow phrases his description, that even in my native language I first thought, the gaskets are completely made by Victor Reinz.

Best from Germany
Martin

 

To be honest a few of us went to great expense to solve the issue in a highly reliable way and we keep that information for our clients. Dave won't tell you much about his gaskets and I won't about mine. The good news is Dave will sell you some. I'd call him.

 

That's what I thought from the beginning. Others have to live only from their development work. Like me. Not to imagine, if I would give it away.
It's sufficient, that I and my customers regularly have to experience plagiarism by the Chinese and meanwhile Indians too (the people from India, not the native Americans)

But I am still interested in the Elring-issue.

Best Regards
Martin