What's up?! Piston higher than the rest.

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Re: What's up?! Piston higher than the rest.

Post  schmitty on January 3rd 2013, 11:51 pm

cheers Small problem and easily fixed. I would never suggest shortening a piston.
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Re: What's up?! Piston higher than the rest.

Post  richter69 on January 3rd 2013, 11:57 pm

ran my 472 like that no issues.
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Re: What's up?! Piston higher than the rest.

Post  IDT-572 on January 4th 2013, 12:53 am

I would have no issue at all running it that way. Carry on............. Twisted Evil
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Sloppy machine Shop Work

Post  madman on January 4th 2013, 5:05 pm

Been reading some posts, I have encountered engine machining that was like done by morons around here!! I saw a brand New Circle track short Block (very xopensive) go to our ??Local best race shop HA!!) and it came back honed out of tolerance I measured one bore and piston wall was over .008 thou yet the others were way less!! Also from air flow research a set of heads with valve retainers so hard I could tap one with a hammer and it would brake in half ,,,OF course they denied any wrongdoing (part was never drawn back or annealed correctly) Brand new engine dropped a valve cause the top valve retainer just broke in half.. Should make these monkeys take a apprenticeship as machinists or something before they are allowed to hang there shingle so to speak...!!!! I do understand every one has there level of expertise but for someone to make a living doing things totally wrong with no recourse is shameful. Hence my feeble attempts to do most everything myself. Mike

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Re: What's up?! Piston higher than the rest.

Post  738drvr on January 8th 2013, 2:34 pm

Update: Shop called. Block has been decked off the crank centerline. All pistons out of the hole .015. Deck is square. Head put on for checking valve to piston clearence. Had almost .250 at max lift showing on the clay. Cleaned the block, reassembled, come and get it.

Me happy. Very Happy
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Re: What's up?! Piston higher than the rest.

Post  the Coug on January 8th 2013, 5:56 pm

personally for my thats unacceptable they would be getting me another block or I would get a refund and FIND another machine shop, now this is a Bastardized combo....
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Re: What's up?! Piston higher than the rest.

Post  richter69 on January 8th 2013, 6:04 pm

read the first post
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Re: What's up?! Piston higher than the rest.

Post  the Coug on January 8th 2013, 6:07 pm

738drvr wrote:Update: Shop called. Block has been decked off the crank centerline. All pistons out of the hole .015. Deck is square. Head put on for checking valve to piston clearence. Had almost .250 at max lift showing on the clay. Cleaned the block, reassembled, come and get it.

Me happy. Very Happy


this is what Iam talking about
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Re: What's up?! Piston higher than the rest.

Post  richter69 on January 8th 2013, 6:16 pm

he bought the block from a member, the deck was at a slant on one bank when he got it, the machine shop just "squared it up" with his blessing.

It will run fine this way I ran one out of the hole .020 and it hauled ass...............
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Re: What's up?! Piston higher than the rest.

Post  richter69 on January 8th 2013, 6:17 pm

sorry, post # 8
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Re: What's up?! Piston higher than the rest.

Post  QtrWarrior on January 8th 2013, 7:05 pm

richter69 wrote:

It will run fine this way ...............

X 2
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Re: What's up?! Piston higher than the rest.

Post  dfree383 on January 8th 2013, 7:15 pm

the Coug wrote:
738drvr wrote:Update: Shop called. Block has been decked off the crank centerline. All pistons out of the hole .015. Deck is square. Head put on for checking valve to piston clearence. Had almost .250 at max lift showing on the clay. Cleaned the block, reassembled, come and get it.

Me happy. Very Happy


this is what Iam talking about

It will be fine, just get some thicker cometic head gaskets and let-r-rip.
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Re: What's up?! Piston higher than the rest.

Post  738drvr on January 8th 2013, 8:46 pm

Coug, I've searched the internet and talked with those I trust and everyone to a man has said run it you'll be fine. What's your beef? scratch
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Re: What's up?! Piston higher than the rest.

Post  richter69 on January 9th 2013, 12:20 am

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Re: What's up?! Piston higher than the rest.

Post  the Coug on January 9th 2013, 9:01 am

738drvr wrote:Coug, I've searched the internet and talked with those I trust and everyone to a man has said run it you'll be fine. What's your beef? scratch


I have no Beef it just seems that 90% of the people on here would rather cobble a mess together than to do it right....I would have junked the block and found one that would have worked.... it's not like it was a special block or something Rare.....
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Re: What's up?! Piston higher than the rest.

Post  IDT-572 on January 9th 2013, 10:01 am

I think a good set of 4 bolt caps were installed on this block.
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Re: What's up?! Piston higher than the rest.

Post  738drvr on January 9th 2013, 11:34 am

It's a good .060 over 4 bolt Dove block with a super nice set of custom made 4 bolt caps. It's now square and if I wanted to change pistons I would have as nice a Dove block as anyone out there. Don't think I'll be scraping this one yet.

Thanks,

Frank
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Re: What's up?! Piston higher than the rest.

Post  466cj on January 9th 2013, 1:11 pm

Yeah darn junk. Go get yourself something nice and send that junk over to me. Laughing

Seriously, good to see you caught the issue and got it corrected. So much of failure vs. success is attention to detail, checking everything is clearanced, and machined correctly!

Steve

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Re: What's up?! Piston higher than the rest.

Post  c.evans on January 9th 2013, 1:22 pm

We all have to remember that during the years of production, Ford used three different deck heights to the best of my knowledge. They had blocks speced at 10.280", then some at 10.300" and then some more at 10.320". So that's a range of .040".

Diamond pistons tells everyone in their catalog,,,that their compression height numbers are based on a 10.300" deck with the piston .005" in the hole. Guess what? With a true 10.280" deck height, the pistons would be .015" out of the hole,,,,and that's where Frank is now.

Charlie

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Re: What's up?! Piston higher than the rest.

Post  738drvr on January 9th 2013, 7:39 pm

Thanks Charlie. I believe you nailed it. Take that Coug. Smile
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