@Otto Suksumake:
GM will be happy to sell you a Chevy Volt around November 2010 that gets infinite fuel economy for 40 miles, 230 MPG equivalent in "new math", and perhaps 50 MPG after the battery runs down.
Do they really use stainless head bolts? Why? Seems like a bad material choice for a high strength fastener that isn't in a corrosive environment...or is it not?
@tjanson: Short answer: Yes, stainless head bolts. Better initial clamp load and reduction of clamp load loss over time. The A286 stainless steel alloy and microstructure has superior strength properties to handle the higher cylinder pressures battering the LS9 head/block joint.
The A286 alloy also has a coefficient of thermal expansion that is closer to aluminum than conventional low carbon steel. With a coefficient of thermal expansion closer to aluminum, the stainless steel bolt is able to retain more clamp load for long term sealing integrity of the head gasket.
Thanks to Brian and Dave, engineering technical specialists for cylinder heads and fastening for Chevy engines.
Please find my bill in the mail for my marriage therapy sessions. Since your article on the assembly of the ZR1 engine my marriage has gone downhill. My wife caught me "looking" at the centerfold pictures of your article.
Ben, do you have any idea how many engineers would have worked to design this beauty? Would it be scores of them, each saying something like, "I designed the alternator bracket on the LS9", or is engine design done by smaller teams?
Nice to see I am not the only one to wear the purple gloves.
It would be a wise decision by any of you here who spin wrenches to take not of those silly looking unmanly gloves and wear them yourselves.
7 years ago my hands looked like hamburger. My wife hated the touch and feel of them. Cuts, grease, grime and crap all the time from a full days work. My first son was born and I could see the grimace on the Dr.'s face when I was there. No matter how you wash, it won't come clean.
7 years later my hands look like a gay hair stylists and when people who don't know me ask me what I do for a living they never believe I turn wrenches to make a buck.
So take note, wear the gay-ass gloves and be a bigger man than those that don't. Plus the wife doesn't mind me playing around with clean hands.
@lilwillie hides autos in the attic: I wear the gloves. It means the difference between needing ten minutes to scrub hands, and having the citrus cleaner smell that the wife hates, or two minutes washing hands, and smelling faintly of Ivory.
The guys that fixed my tractor's magneto wore the gloves, too.
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10/03/09
BTW, I think you left out a few camshafts...
10/02/09
10/02/09
The greatest post ever on this site, even better than Ken Imhoff's basement Lambo.
Making things is vital to a country's soul. The heartbeat of America!
10/02/09
Now to apply their expertise in HP to fuel economy...
10/02/09
GM will be happy to sell you a Chevy Volt around November 2010 that gets infinite fuel economy for 40 miles, 230 MPG equivalent in "new math", and perhaps 50 MPG after the battery runs down.
10/01/09
@.@
10/01/09
But if the engine were in front of me, I would be just as taken by it.
10/01/09
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10/02/09
The A286 alloy also has a coefficient of thermal expansion that is closer to aluminum than conventional low carbon steel. With a coefficient of thermal expansion closer to aluminum, the stainless steel bolt is able to retain more clamp load for long term sealing integrity of the head gasket.
Thanks to Brian and Dave, engineering technical specialists for cylinder heads and fastening for Chevy engines.
Tom Read
10/01/09
Please find my bill in the mail for my marriage therapy sessions. Since your article on the assembly of the ZR1 engine my marriage has gone downhill. My wife caught me "looking" at the centerfold pictures of your article.
Thanks for your prompt payment.
Quattro-Luvr
10/01/09
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10/01/09
Anyway, thanks for the excellent build tour.
Oh, and those are the prettiest rockers I've ever seen.
10/01/09
/I only know how to break 'em
10/01/09
It would be a wise decision by any of you here who spin wrenches to take not of those silly looking unmanly gloves and wear them yourselves.
7 years ago my hands looked like hamburger. My wife hated the touch and feel of them. Cuts, grease, grime and crap all the time from a full days work. My first son was born and I could see the grimace on the Dr.'s face when I was there. No matter how you wash, it won't come clean.
7 years later my hands look like a gay hair stylists and when people who don't know me ask me what I do for a living they never believe I turn wrenches to make a buck.
So take note, wear the gay-ass gloves and be a bigger man than those that don't. Plus the wife doesn't mind me playing around with clean hands.
10/01/09
10/01/09
...or for my pleasure. A fair trade off, to actually be able to get lucky.
10/02/09
The guys that fixed my tractor's magneto wore the gloves, too.
10/01/09
Cool feature and what a day. Your job seems to have a lot of perks involving the ZR1 that mine lacks.