Guessing this plug is a leak filler in this 906 head that I've had since the 70's but I'm not gonna' remove it to find out.....
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Did you go all of the way through with the drill?View attachment 1716493625
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The top picture is a pin hole that opened up when I charged the cooling system.
Brand new intake manifold.
The bottom picture is my fix.
I was going to pull the intake and run it up on the hill so @MOPARMAGA could TIG it.
Then I said screw that and fixed it with a plug.
Just crap **** any more. It cost me at least two hours to unscrew that.
Holley can suck it.
Is there a reason you're keeping the intake make and model a secret?Yup. It’s not leaking so I wouldn’t even look at it knowing my luck.
It would think I was side eyeing it and it would start leaking just to irritate me.
I’m not poking that bear.
Nevermind. I missed this post.The manifold is a brand new Weiand tunnel ram. It was from the last batch that Holley made and supposedly they won’t make any more.
And, Holley says they used the exact molds that Weiand did years ago. I’m not sure I buy that now. But I did when I got it.
I don’t know how many manifolds of every brand I can think that I installed and never saw this before.
It’s like @Oldmanmopar said above. His kid is pressure testing everything.
That’s where I’m at. Another detail that must be verified.
If this was a customer engine on the dyno I’d be losing my entire *** and probably both legs on this time burglar.
Edit: if Speedmaster made a tunnel ram I’d look at it.
Did you go all of the way through with the drill?
Luckily it was close to the thermostat housing making cleaning the chips easier.Yup.
It’s not very thick there either.
Thick enough for some threads, thankfully.Yup.
It’s not very thick there either.
Back in the '80's, I worked for a Buddy's Dad, and at some point He purchased a diesel Lynx. Couple of years later, that thing was leaking oil around a head bolt up front, so He pulled the head & brought it to Me. The oil gallery running across the frt. was leaking thru' the casting right to the head bolt hole, so I yanked the plug, sized it & pressed a tube w/sleeve retainer on it into the gallery...pretty long ways there. It lasted for a few months, then sprung somewhere else.....they said screw it & just kept adding oil, lol.......I would keep a close eye on the spot and repair. More often than not in my experience, the cavity can go other places as well after more heat cycles. Hopefully no coolant makes it to an intake port
Let alone the hours he has into the plenum modifications...I’m still trying to get my head around what it would be like finding a gravity powered water leak on an out of the box probably $600 plus intake…
That is a clever repair.
I’m still trying to get my head around what it would be like finding a gravity powered water leak on an out of the box probably $600 plus intake…
I probably would have come dangerously close to stroking out right then and there... I don't believe I'd trust who was overseeing the manufacture of that to sling **** in a **** house.Trust me, it wasn’t pretty when I figured it out.
Lol, I'm a glutton for punishment. If something like that doesn't happen for me, I'm double checking till I make it happen.I probably would have come dangerously close to stroking out right then and there... I don't believe I'd trust who was overseeing the manufacture of that to sling **** in a **** house.
View attachment 1716493625
View attachment 1716493626
The top picture is a pin hole that opened up when I charged the cooling system.
Brand new intake manifold.
The bottom picture is my fix.
I was going to pull the intake and run it up on the hill so @MOPARMAGA could TIG it.
Then I said screw that and fixed it with a plug.
Just crap **** any more. It cost me at least two hours to unscrew that.
Holley can suck it.
OR it may even have a minute crack or cracks that cannot be seen. You make a great point. We're just gettin fleeced comin and goin with the quality of auto parts.
For a sand casting, I can believe that, particularly if they took Weiand's patterns to a different foundry. There's a lot of steps in between the patterns to making a sand mold to pouring the casting and machining to the final shape, and a lot of places things can go wrong if you cut corners.The manifold is a brand new Weiand tunnel ram. It was from the last batch that Holley made and supposedly they won’t make any more.
And, Holley says they used the exact molds that Weiand did years ago. I’m not sure I buy that now. But I did when I got it.
Yeah, almost everything being made has slipped into substandard malaise mediocrity compared to the way things used to be done. We’ve not reached the bottom yet, but we can see it from here.You think it's just auto parts?
You sweet summer child...
Well, that's kinda all we discuss HERE, but yeah, we're gettin fleeced on literally everything.You think it's just auto parts?
You sweet summer child...
Edit:
That is why i signed my name on every part i made when i was building drones. If anything went wrong with my parts, i wanted to know so i could fix the issue for future parts. I only got one type of part back, and that was a resin chemistry issue.