to bore or hone or replace block
09-21-2007 | 06:17 PM
#1
Thread Starter
5 year bitches!
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Joined: Oct 2003
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From: Pittsburgh!!!!!!!! Pa
to bore or hone or replace block
i tore down my 408 partially to see a few marks in the number 7 cylinder. up top around the face of the block theres a few dents in teh walls from the valve. also down the cylinder some is a nice gouge. heres a pic of it.....now i would like some of your opinions and guesses on what should be done
do i hone the cylinders?
do i bore the cylinders?
or do i replace the block
the block is a brand new block that was bored .030 right now
yes a finger nail can grab a hold of it rest of that cylinder looks good minus up top
ill have a pic of the other flaw once it transfer over from my phone to my email
do i hone the cylinders?
do i bore the cylinders?
or do i replace the block
the block is a brand new block that was bored .030 right now
yes a finger nail can grab a hold of it rest of that cylinder looks good minus up top
ill have a pic of the other flaw once it transfer over from my phone to my email
09-21-2007 | 06:18 PM
#2
Thread Starter
5 year bitches!
iTrader: (7)
Joined: Oct 2003
Posts: 4,890
Likes: 2
From: Pittsburgh!!!!!!!! Pa
downfall is this....if i go over bore then ill run into custom pistons and im sure that will be alot more money then it ouwld be for off the shelf pistons. so i would have cost of block being bored plus custom pistons...where i can get a new block for 5-600 nd just run it as a 402
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09-21-2007 | 06:42 PM
#8
Have you priced sleeving the bad cylinder and then boring it to match the rest? On my last engine rebuild (350) I had one hole sleeved cause it broke a rod and I think it was only like $100 per hole (This was several years ago, and I get a discount).....
09-22-2007 | 12:41 AM
#10
Just thinking that if you bought the block for 5-600 plus a set of 4.00 pistons to drop the compression you'd be at, what? 800-1200? depending on the brand and how much dish you need (which might be a custom piston right there), etc.
You could probably get it punched another .005 for $300 which would leave $600-900 for the custom pistons (I think my last set of diamond customs were $480 as I recall). I'm not sure honing would cover the gouge, but it's hard for me to judge that stuff from pics.
Does it look like .005 would get both the gouge and the dents? If not I think you can go 4.040 without too much risk or longevity hit. I think Benkey had to do go that big on his.
You could probably get it punched another .005 for $300 which would leave $600-900 for the custom pistons (I think my last set of diamond customs were $480 as I recall). I'm not sure honing would cover the gouge, but it's hard for me to judge that stuff from pics.
Does it look like .005 would get both the gouge and the dents? If not I think you can go 4.040 without too much risk or longevity hit. I think Benkey had to do go that big on his.