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new blown 502 short block pics....
It's finally coming together and beginning to look like something other than a big pile of parts. A few more obstacles than I had expected but the short block is just about wrapped up. I worked on it till 1am tonight. I ended up spending quite a bit of time on the rods in particular because I used the torque + angle method then went in and checked the stretch on the bolts after that. New to me, I've always just torqued the rod bolts on my motors in the past but after seeing the torque varying from bolt to bolt to achieve proper stretch....I think I'll use this method from now on. It's a lot more accurate!
Here's what's in it if your wondering: 516 cu. in. (bored, align honed, decked) ARP main studs stock steel crank (double keyed) Oliver rods Clevite h series coated rod bearings Clevite h series 3/4 groove main bearings Durabond coated cam bearings SRP pistons Total Seal rings (napier 2nd ring) Melling select pump (std/std) Marine Kenetics hyd. roller cam Rollmaster timing chain Morel lifters ATI ballancer Unleashed machine timing pointer Dan Olson oil pan http://i986.photobucket.com/albums/a...mark66/282.jpg http://i986.photobucket.com/albums/a...mark66/283.jpg http://i986.photobucket.com/albums/a...mark66/285.jpg http://i986.photobucket.com/albums/a...mark66/286.jpg http://i986.photobucket.com/albums/a...mark66/293.jpg |
Originally Posted by mustangmark
(Post 3672928)
It's finally coming together and beginning to look like something other than a big pile of parts. A few more obstacles than I had expected but the short block is just about wrapped up. I worked on it till 1am tonight. I ended up spending quite a bit of time on the rods in particular because I used the torque + angle method then went in and checked the stretch on the bolts after that. New to me, I've always just torqued the rod bolts on my motors in the past but after seeing the torque varying from bolt to bolt to achieve proper stretch....I think I'll use this method from now on. It's a lot more accurate!
Here's what's in it if your wondering: 516 cu. in. (bored, align honed, decked) ARP main studs stock steel crank (double keyed) Oliver rods Clevite h series coated rod bearings Clevite h series 3/4 groove main bearings Durabond coated cam bearings SRP pistons Total Seal rings (napier 2nd ring) Melling select pump (std/std) Marine Kenetics hyd. roller cam Rollmaster timing chain Morel lifters ATI ballancer Unleashed machine timing pointer Dan Olson oil pan http://i986.photobucket.com/albums/a...mark66/282.jpg http://i986.photobucket.com/albums/a...mark66/283.jpg http://i986.photobucket.com/albums/a...mark66/285.jpg http://i986.photobucket.com/albums/a...mark66/286.jpg http://i986.photobucket.com/albums/a...mark66/293.jpg first... there are no generic numbers. you need the stretch numbers from the guys that MADE the bolts... no the guy in the plaid pants and white shoes that sold them to you. second... what you use for lubrication is critical. that same guy that gave you the number will tell you what lube to use on the bolts. use that and that only changing that can affect the preload. third... the stretch method implies that they are reusable bolts... which is good. that also means that they should be repeatable... so... use your torque wrench to pull one up to a number thats short of the required stretch. measure the bolt. back it off and do it again with a slightly higher number... and keep doing that until one smooth pull gives you the stretch you want... now... on another bolt in another location, try the single pull/ measure deal and you should be VERY close to correct... if not... find out why. good bolts used in properly machined and cleaned and lubricated threads should be so repeatable its almost hard to believe... also... don't fully torque one without preloading the other just a bit... doing one completely and then the other can introduce a hinge load... and working until 1 am doesn't make you a hero... it only makes you prone to impatience and error. |
What advantage is there is using a 3/4 groove main bearing, just curious about that? Nice build btw and I appreciate your attention to detail.
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I called Oliver for the specs and used arp assem. lube. Also, I never thought of, claimed or implied I was some kind of hero for working late. Thanks for chiming in with the advise though....I appreciate it.
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Originally Posted by mustangmark
(Post 3673240)
I called Oliver for the specs and used arp assem. lube. Also, I never thought of, claimed or implied I was some kind of hero for working late. Thanks for chiming in with the advise though....I appreciate it.
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Originally Posted by stevesxm
(Post 3673351)
just an observation that could have been phrased better.
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