Cheap cylinder heads
Come with SS valves, springs, retainers, keepers, guide plates and valve guide seals. I had to buy spring cups to protect the alum spring pocket or seat. I lapped the valves to check contact, no problem there, measured the spring height, within 0.015 plus or minus, so OK there no need to shim. I measured and numbered and charted everything. The only problem I have is the roller rockers are too wide for cast alum valve covers. Best of luck
Mark
http://forums.corvetteforum.com/show...ht=AFR+tooling
4 other personal encounters I've had with American manufacturers.
#1 the 1 year old original ZZ3 engine in the car when I bought it started burning oil 6 months after I bought the car. It turns out piston ring lands on many of the pistons broke. My support from GMPP:
Them:"You over-revved the engine"
Me: "I have a 6000rpm MSD rev limiter in the car. (redline on a ZZ3 is 6200rpm)"
Them: "You over-advanced the timing"
Me: "The timing was set 32 deg maximum advance".
Them: "Oh well..."
#2 Bowtie Performance built me a 383 in which the crankshaft was .010 OVER the size of the main bearings AFTER they had worn through to the steel. Lesson from that one: "If you're Canadian, don't buy a crate motor from the US, since they know you won't go through the expense / customs hassle to ship it back, and will put an according amount of TLC into your product.
#3 Holley Commander 950 TBI kit that:
- required an hour of hand filing to remove casting flash
- took about a year to get running properly because of buggy software that crashed regularly (and toasted my fuel map several times), and their totally useless manual and tech support that provided totally incorrect installation & setup procedures. At least they seemed to have improved this product somewhat.
#4
Supposedly hardened yoke from Zip Corvette products in which the groove wore out to the point of .125 endplay in under 6 months. (or maybe it was oversize right from the start...)
I now adhere to the following rules:
- don't trust anything you buy from anyone to be of high quality
- do as much of the work as possible yourself
- if you are going to buy something that requires more equipment/technical skill than you have, buy it locally so you can personally deal with the seller personally if anything goes wrong.
I have only owned 4 vehicles my 24 years of owning vehicles:
- '82 Cavalier, '88 Sprint, '93 Beretta GTZ (still drive it), '77 Corvette.
Do you see a trend here (think Bowtie...)
Food for thought:
What's more 'Canadian', a Honda Civic built in Alliston Ontario, or a Chevy Aveo built in Korea?
I am a manufacturing systems developer and just about the last person who would buy overseas parts for my car. The unfair trade practices with Asia that both the US and Canada allow burn me to no end. The tool and mold shops in this area are closing right left and centre because their customers (Canadian and American companies...) are outsourcing the work to China. Right now there is a big quality gap, but remember when '*** scrap' used to be a common phrase? They'll catch on to the quality thing sooner or later and it's up to us to be a few notches better yet.





Corporate greed supported by government policy that supports special interests but also supported by a very large section of the american people including blue collar workers. How many of you have 401K accounts with the more lucrative international funds in the portfolio?
A large portion of these funds wind up in asia.






I am right there with you....
Last edited by vettenoir; Jan 23, 2007 at 12:03 AM.





Last edited by 63mako; Jan 23, 2007 at 08:25 AM.
The Best of Corvette for Corvette Enthusiasts
FYI, Zeus was acquired by Caparo in 2006
http://www.caparo.co.uk/ca.htm
http://www.themanufacturer.com/uk/de...contents_id=52
FYI, Zeus was acquired by Caparo in 2006
http://www.caparo.co.uk/ca.htm
http://www.themanufacturer.com/uk/de...contents_id=52
I have no doubt that there all kinds of foreign parts in gm crate engines! I have a Jeep that is made in my home state of Ohio. Since the Germans bought Jeep there all kinds of foreign stuff in it.
I would also bet that even some of the American cylinder heads companies are using some foreign parts in there heads for the cheaper models.
I am sticking with my opinion of if you buy a head get it bare and have it assembled by a local guy you trust no matter what brand and with parts that you choose!
However, I have personally observed this when unpacking some Ferrea valves. Some of the individual cellophane packs were clearly printed either "Product of Argentina" or "Product of Brazil" ... I honestly don't recall which country but it was one or the other.
However, I have personally observed this when unpacking some Ferrea valves. Some of the individual cellophane packs were clearly printed either "Product of Argentina" or "Product of Brazil" ... I honestly don't recall which country but it was one or the other.
We expect the absolute best for the lowest price possible, this is capitalism, which is simple to understand. Lower cost labor is only a natural extention of this principle, if you want something but want to buy cheap then you get what has been made either cheaply or well made in a cheap labor market, no other way around it.
Is it the corporations fault? Hardly, the Consumer? You got it. Corps just provide what we ask for, i.e. Walmart
You want to support our workforce, pay more and buy American, you want to pay less, buy made in elsewhere. Either way just accept what you are doing as having a direct consequence on your or your kids future and move on, there's no one to blame but ourselves for any of this.
OK my soapbox time is up, next...











