This cant be normal

[Kidmoonie]

has anybody seen this, the valve guide broke off the cylinder head, is there a way it can be fixed, or am I buying a new cylinder head? What would cause this, faulty from day 1 maybe?

 

[Bluezone]

The guides are replaceable but you're going to have to pull the cylinder head to fix that.

 

[Kidmoonie]

They are not part of the cylinder head? Meaning part of the cast? Thats great news then, Do you happen to know the part number for this, or the part name i can look it up, because i cant find anything in reference to. Thanks

 

[Bluezone]

No idea of the part number. But there are different suppliers for the replacement valve guides. Here's an example.

Ferrea Ford Ecoboost 3.5L Exh & Int Valve Guide - Single (Use w/SL1155

VG1104-1

www.parkautomotorsports.ca

 

[SHOrod]

May I ask what the symptoms were that caused you to look for the broken guide?

-Rod

 

[Kidmoonie]

No idea of the part number. But there are different suppliers for the replacement valve guides. Here's an example.

Ferrea Ford Ecoboost 3.5L Exh & Int Valve Guide - Single (Use w/SL1155

VG1104-1

www.parkautomotorsports.ca

May I ask what the symptoms were that caused you to look for the broken guide?

-Rod

Thanks @Bluezone ill look into it

@SHOrod my knock during acceleration would go right to 7.49… once I was done accelerating, it would go right back to 0, if accelerating gently, i could make the knock creep up slowly till i got to 7.49. I figured i needed to start tearing down untill I found the source, because it was to consistent, to be fake.

 

[Kidmoonie]

Thanks @Bluezone ill look into it

@SHOrod my knock during acceleration would go right to 7.49… once I was done accelerating, it would go right back to 0, if accelerating gently, i could make the knock creep up slowly till i got to 7.49. I figured i needed to start tearing down untill I found the source, because it was to consistent, to be fake.

@Bluezone unfortunately the piece that sheered off is cast with our heads and it can not be repaired, so I just ordered another head today from Ford and all the fixings.

 

[Kidmoonie]

@Bluezone unfortunately the piece that sheered off is cast with our heads and it can not be repaired, so I just ordered another head today from Ford and all the fixings.

Probably bad from day 1, but with running E and spraying meth day in and day out, and the effect they have on aluminum, didnt do it any favors

 

[Bluezone]

Well that sucks big time.

 

[Zpak]

That sucks indeed. What cylinder was it?

 

[Kidmoonie]

@Zpak cylinder 1

 

[Zpak]

Did you yank the motor or get that head off in the car? Firewall side really adds insult to injury.

 

[luigisho]

uggh. cyl 1 in the back...

 

[yaycandy]

Its just a valve guide. They usually break with age. No fuel on it so that dont matter. Oil can seep into the cylinder when the valve guides are cracked but that is broke off so it should still hold oil back. Replace all of them when you pull the head off. Id leave the other head alone

 

[Kidmoonie]

Did you yank the motor or get that head off in the car? Firewall side really adds insult to injury.

@Zpak i removed front bumper and radiator and kept the motor in place, not to bad that way actually

@yaycandy meth and aluminum are not friends at all, 3 years of injecting daily takes its toll, the other head I just replaced last year, this year its bank 1’s turn supposedly

 

[yaycandy]

@Zpak i removed front bumper and radiator and kept the motor in place, not to bad that way actually

@yaycandy meth and aluminum are not friends at all, 3 years of injecting daily takes its toll, the other head I just replaced last year, this year its bank 1’s turn supposedly

Dont put methanol on titanium either. I accidentally did it at work once and it etched the **** out of a finished titanium part

 

[Kidmoonie]

Dont put methanol on titanium either. I accidentally did it at work once and it etched the **** out of a finished titanium part

methanol is abrasive to all metals, some more than others, how long was the meth on that part for? like seconds?

 

[yaycandy]

methanol is abrasive to all metals, some more than others, how long was the meth on that part for? like seconds?

Yea its literally all it takes. Was a while back. I had a can of alcohol and a can of methanol with a kimtech wipe and i wiped the part off after machining it to check surface finish with methanol on a just a precise tissue and it scored it maybe a thou or 3 deep from wiping it. was crazy. Accidentally used methanol instead of alcohol. Hopefully i was able to save it and remachine it while keeping within the perpendicular and parallel spec after indicating it back in. Dealing with different aerospace materials like inconel, titanium, hastaloy and monel on a daily its hard to make that mistake but it happens

 

[Bluezone]

You must go through a lot of diamond inserts.

 

[yaycandy]

You must go through a lot of diamond inserts.

On inconel yes. Titanium is fairly easy once the speeds and feeds are correct. Almost machines like stainless. Now inconel, that stuff is a pain as it tool hardens quick and you gotta have it at a low rpm and excellent coolant quality. More goes into the cost of inconel parts. Like cost of inserts and slow cycle time. I mostly drill inconel. Coolant drops and it will melt a kennametal drill real quick. Happened to me a few times on cnc lathes when the coolant starts getting low and im playing on my phone instead of watching it.

I havent been on a lathe or mill in 6 months or so. I do r&d on live jet engine shaft seals and industrial oil seals in another department in the company. I do miss it. Feel like a part of me is missing without machining. Sorta like driving an automatic sports car