More "epidemic" quality control issues with ALL engine components regardless of the manufacturer. Invest in good measuring tools FIRST!!.......parts second.
You are correct: check everything. In the case of carbs, I picked up a set of pin gauges to prove orifice & bleeder sizes on anything new or unknown history - it paid for itself immediately. But you know what? I had to check those too! And it turned out I had two duplicates in the box which meant... two sizes were missing. But for $20, it wasn't a bad deal and things got sorted: micrometer investment is a must for building.
I can vouch for your findings on this same cylinder heads. I completely reworked and ported a set of these heads. You can put alot of labor into these aftermarket heads. Brand does not mean anything. But they can be made into good cylinder heads. Thanks for sharing. Happy New Year.
Thanks Ed for the comment. You and I have shared a lot of the same "negative" engine building experiences. It's the times we now live in. Best wishes to you and yours in 2024. Regards, Tim.
This is why people buy Chinese heads and put their own good parts in them. They might be made from an aluminum can, but most of the castings are nice. (Not procomp/speedmaster junk)
You are correct: check everything. In the case of carbs, I picked up a set of pin gauges to prove orifice & bleeder sizes on anything new or unknown history - it paid for itself immediately. But you know what? I had to check those too! And it turned out I had two duplicates in the box which meant... two sizes were missing. But for $20, it wasn't a bad deal and things got sorted: micrometer investment is a must for building.
Excellent video.
I don't recall the clearances, but many years ago, bronze wall guides could and were ran tighter on the valve stems than iron guides were.
I can vouch for your findings on this same cylinder heads.
I completely reworked and ported a set of these heads.
You can put alot of labor into these aftermarket heads.
Brand does not mean anything.
But they can be made into good cylinder heads.
Thanks for sharing.
Happy New Year.
Thanks Ed for the comment. You and I have shared a lot of the same "negative" engine building experiences. It's the times we now live in. Best wishes to you and yours in 2024. Regards, Tim.
@@metalmaxmopar9520 Thanks Tim, I really appreciate it.
I've seen worse porosity on my BMW motorcycle heads from the early 70s. I just got rid of any sharp edges and ran it.
This is why people buy Chinese heads and put their own good parts in them. They might be made from an aluminum can, but most of the castings are nice. (Not procomp/speedmaster junk)