Quality control??

[AZBoneFish]

Don't feel too bad. This is my brand new Air Gap intake. After it was powder coated and gasket matched, I set the carb on and noticed the throttle wouldn't open at all. After closer inspection, it was evident that the carb mount holes were off center from the plenum. I set my 4 hole spacer on and saw the same offset. I traced the spacer hole pattern to the intake and did a little carbide bit work. It's fine now. But I wish I'd caught it sooner, before powder coating, so I could have returned it to Summit.

 

[Daves69]

....But I wish I'd caught it sooner, before powder coating, so I could have returned it to Summit.

Wow, that's a sad deal. This is a "heads up" for everyone.

I'd be curious on the Summit and Edelbrock reaction to such a blatant defect. Have you inquired or responded with a product review of the issue with them?

 

[AZBoneFish]

Wow, that's a sad deal. This is a "heads up" for everyone.

I'd be curious on the Summit and Edelbrock reaction to such a blatant defect. Have you inquired or responded with a product review of the issue with them?

Definitely a heads up for sure. I have not contacted them or reviewed the purchase. Might be too late now. Been about 4 months ago. I'll check on it. Figured it's too late for them to do anything meaningful about it, since they're not gonna cover powdercoating cost.

 

[AZBoneFish]

Definitely a heads up for sure. I have not contacted them or reviewed the purchase. Might be too late now. Been about 4 months ago. I'll check on it. Figured it's too late for them to do anything meaningful about it, since they're not gonna cover powdercoating cost.

Btw. The same shift caused the runners to be off slightly at the head. Not much, but noticeable. Blended all runners to match gaskets.

 

[PRH]

20+ years ago a friend went down with another guy to Scott Shafiroffs place in LI to watch them dyno test a new all aluminum, dry sumped, big chief headed, sheet metal TR equipped 632 BBC.
As soon as the engine started, a stream of coolant started oozing out of the brand new, cnc ported, titanium valve filled cylinder head.
Engine was shut down……. And apparently there was no panic on the scene.
Out came the drill & tap, and pipe plug with sealer.
Within 10 minutes the engine was back up and running.
They said “we see stuff like that all the time”.

 

[PRH]

The real question is, when is the “dyno test thread” planned to make it onto the board?

 

[Garrett Ellison]

20+ years ago a friend went down with another guy to Scott Shafiroffs place in LI to watch them dyno test a new all aluminum, dry sumped, big chief headed, sheet metal TR equipped 632 BBC.
As soon as the engine started, a stream of coolant started oozing out of the brand new, cnc ported, titanium valve filled cylinder head.
Engine was shut down……. And apparently there was no panic on the scene.
Out came the drill & tap, and pipe plug with sealer.
Within 10 minutes the engine was back up and running.
They said “we see stuff like that all the time”.

My first thought would have been "how do we know there's not a constant stream of coolant going into the valley of the engine?" A little pressure or vacuum testing can go a long way before assembling that level of stuff. Seems like that would even become S.O.P. after the first time... Scares me to death!

 

[Nat]

Not much has changed I had a ho;;et street dominator that had many vacuum leaks beause of porous casting , that was in 1975

 

[StreetSleeper]

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.

Holley had so many complaints with their new carburetors, EFI-is it just a plan/drawing given to China, and then poor tolerances/casting etc.?

Is this any and every experience with new Holley products now?

IIRC, I don’t think you cared for/preferred edelbrock carbs over Holley, is the answer just using old stock or what brand would you recommend?

When it came to cylinderheads, there were so many complaints with the edelbrock SBM heads after the first run of production-is this just a niche market problem?

Am looking forward to advice.

 

[StreetSleeper]

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.....
View attachment 1716493719

For us less experienced, why make the plug a square head, once drilled, couldn’t the repair person use a (? Grade8?) bolt? Is it material (alloy) matching?

What is the thought process going into this repair?
Thank you!

 

[Daves69]

For us less experienced, why make the plug a square head, once drilled, couldn’t the repair person use a (? Grade8?) bolt? Is it material (alloy) matching?

First of all SS, realize I didn't do this repair or mod in the head. That is the reason I used the term "guessing".
I do however believe one could do this with almost any type of plug. Some material may be better suited for cast iron, especially when repairing a cracked block.
My thinking is this head developed just a pinhole leak at some point due to a porosity void near the surface in the casting. The pinhole was likely drilled and tapped for this plug to stop the leak.
But I won't be removing it to find out what this plug is made of.