Darton sleeved 427 w/ L92 heads project begins
01-15-2010, 07:19 PM
#86
Melting Slicks
nice progress kevin! Good reading here. SDxx? Scoogin Dickey?
You thinking of another caravan to pick your car up? I would be up for that if it's decent out. I'd like to check out that facility also.
You thinking of another caravan to pick your car up? I would be up for that if it's decent out. I'd like to check out that facility also.
01-15-2010, 08:44 PM
#89
Former Vendor
Member Since: Nov 2008
Location: Virginia Beach Virginia
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Here are some pics of the sleeve machining and installation process.
first thing is the block setup in the cnc-here the probe is finding the crankshaft center line
now we find the camshaft centerline-this way we ensure the bores and decks are exactly 45 deg from the camshaft to crankshaft centerline
now we probe the bore locations to determine the location of the bores
now we probe the decks in 6 locations on each bank-this tells us the height and straightness of the decks
here is a report of the locations of the bores and the deck heights-the x locations in parenthesis are the blueprint locations the one beside them are actual.All y locations should be zero
here we are rough boring-this will get us to within .020 of the actual size
block after rough boring
couple shavings underneath
finish boring-we need to be within .0002 when finish boring-that's 2 ten thousanth's of an inch.Accuracy is really the key here-if not bored perfectly-you can crack the block when installing the sleeve or you can have a loose sleeve.There are not too many machines out there that can hold this accuracy-we are very fortunate to have one.
bores ready for sleeves
sleeves installed
ready for final machining
first thing is the block setup in the cnc-here the probe is finding the crankshaft center line
now we find the camshaft centerline-this way we ensure the bores and decks are exactly 45 deg from the camshaft to crankshaft centerline
now we probe the bore locations to determine the location of the bores
now we probe the decks in 6 locations on each bank-this tells us the height and straightness of the decks
here is a report of the locations of the bores and the deck heights-the x locations in parenthesis are the blueprint locations the one beside them are actual.All y locations should be zero
here we are rough boring-this will get us to within .020 of the actual size
block after rough boring
couple shavings underneath
finish boring-we need to be within .0002 when finish boring-that's 2 ten thousanth's of an inch.Accuracy is really the key here-if not bored perfectly-you can crack the block when installing the sleeve or you can have a loose sleeve.There are not too many machines out there that can hold this accuracy-we are very fortunate to have one.
bores ready for sleeves
sleeves installed
ready for final machining
01-15-2010, 09:11 PM
#90
Former Vendor
Member Since: Nov 2008
Location: Virginia Beach Virginia
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here is the block decked to the proper height-give or take .0001
hopefully next week i can get the block honed and rotating asy balanced-i got a lot of other blocks to hone as well
hopefully next week i can get the block honed and rotating asy balanced-i got a lot of other blocks to hone as well
01-15-2010, 09:13 PM
#91
Race Director
Thread Starter
I've got a few guys want to make the trip. I'll count you in Steve. Follow the thread and you'll know when we're going down.
01-15-2010, 09:14 PM
#92
Race Director
Thread Starter
01-15-2010, 09:19 PM
#93
"AlohaC5" Senior Member
That is some beautiful engine **** there! Kevin, looks like the guys are doing some 1st class work on your project. Looking forward to our road trip to VA Speed when ready.
01-16-2010, 07:38 AM
#97
Le Mans Master
Member Since: Nov 2003
Location: Tampa Fl
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St. Jude Donor '12-'13-'14
So Im hanging out with one of my kids this morning watching saturday morning cartoons, and I ask him " do you remember Kevin with the white corvette from Virginia". She says "yes". I say "look at these pictures. He's having a new 427 motor built" he looks at the pictures and says" is that good". I say " it will be good for a while tell kevin says it need more" 
Kids lol
Kids lol
01-16-2010, 07:43 AM
#98
Race Director
Thread Starter
So Im hanging out with one of my kids this morning watching saturday morning cartoons, and I ask him " do you remember Kevin with the white corvette from Virginia". She says "yes". I say "look at these pictures. He's having a new 427 motor built" he looks at the pictures and says" is that good". I say " it will be good for a while tell kevin says it need more"
Kids lol
Kids lol
It's all good.
I wonder how it would run with a little boost...
Last edited by WKMCD; 01-16-2010 at 08:26 AM.
