joes68340s
Well-Known Member
Anyone run edelbrocks out of the box with success. I here they need to be torn down and checked at the guides and seats. I want to run them in stages on my 340. Stock then port them. Thanks
plenty of guys have run them right out of the box but its cheap insurance to have them checked out in my opinion.
Keep an eye on push rod hole clearance too.
So watching the needle of the runout gage when checking the concentricity of the seats is simple gimickery for cash? And they set it up so the seat cutter they use only hit one side fot he seat initially? Interesting concept. I fell for it...lol. (and yes, years ago I said "that's BS... show me")
I do agree the failure rate is low. But in terms of business, yes, a business accepts that some of the product will have such issues. In other RPM heads I've found: a single spring with no dampener (spring was defective, but got installed on the assembly line anyway). A retainer with only one lock on it (catastrophic failure imminent if not caught during inspection). At least 3 of 8 exh guides that I measure on every set have less than .0003" clearance. Yes, that's 3 thenths of a thou and the norm is .0005-.001 clearance on exh guide to valve stem. I've used 5 sets of RPMs I unboxed. All 5 had seat and guide issues. We don't have to accept the issues. We can shop elsewhere or deal with it. The Hughes heads as sold... ARE ALREADY CORRECTED. They are sold to Hughes as bare castings and Hughes does the work.
Especially with a retrofit hydraulic roller cam. Those lifters are taller and change the pushrod geometry requiring a lot of clearancing.
If your spending $1500.00 one would expect a product to run "Out of the box" I guess defective products are expected? And we are O.K. with that?
Not for my money! Let's say you spent $1500.00 on machine work on your block. When you get it home you have to do some clean up and re-tap some bolt holes and then find some other flaw. Would you just expect that? Or would you run right back to your machine shop and demand they do it right?
Quality is quickly fading in all sorts of businesses, What a shame!
John D. Beckerley
Austin, Texas