Valve piston contact question
Hotshot
Joined: Jul 2008
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From: N.GA Mountains
That is a lot of coking in ringland. We often see this from extended idling. Not sure if that directly influenced that skirt to quit its job, but something was going on there. Like I said earlier, beating on these engines while they are cold is a BAD thing - especially with a chip.
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Senior User
Joined: Aug 2013
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When I removed the injectors they were tight and seated well.
This weekend I should have the crank and timing off. Hoping to get the block to the machine shop Monday.
What bolts would you guys recommend not reusing? I am getting arp head studs. But is there any other things I am not supposed to reuse?
This weekend I should have the crank and timing off. Hoping to get the block to the machine shop Monday.
What bolts would you guys recommend not reusing? I am getting arp head studs. But is there any other things I am not supposed to reuse?
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Senior User
Joined: Aug 2013
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I have a problem.. I called the machine shop today. They were supposed to call me before they started on my block to let me know how much they think they need to take off. They said #7 was hard to clean up and they had to go .060 over.. I told him just from I know I think the max is .030 over on these. I don't know if they did just that one or all of them because I lunch break was up.
Lead Driver
Joined: Jun 2004
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From: Amarillo, TEXAS!
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More Turbo
Joined: Mar 2003
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From: Green Bay Wi
Hate to say it this way but I would have it sonic tested. I myself have never tested a 7.3 block. I would guess it is a very nice thick walled block. I know from my FE/427 engines it is common for .125 thrust non thrust and .100 in-between cylinders. I have even run some .09X numbers between as they are just holding water down low. Most shops charge $100 and it is a good price to pay before sleeves. As 8 holes are about $800
More Turbo
Joined: Feb 2015
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From: DFW
Hate to say it this way but I would have it sonic tested. I myself have never tested a 7.3 block. I would guess it is a very nice thick walled block. I know from my FE/427 engines it is common for .125 thrust non thrust and .100 in-between cylinders. I have even run some .09X numbers between as they are just holding water down low. Most shops charge $100 and it is a good price to pay before sleeves. As 8 holes are about $800
If this machine shop didn't have a plan before they started I would be nervous.
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I am pissed at them. I told them I want it as close to stock size. I'm not a machinist and even I know to sleeve the damaged one match it to the rest.
They should've contacted me and told me what was going on. Not to mention its 4 days last when they said it was supposed to be done and I had to call them.
I am still unsure if they did all to .060 over.. I will call them again tomorrow to get the whole story.
They should've contacted me and told me what was going on. Not to mention its 4 days last when they said it was supposed to be done and I had to call them.
I am still unsure if they did all to .060 over.. I will call them again tomorrow to get the whole story.
Thread Starter
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Senior User
Joined: Aug 2013
Posts: 148
Likes: 0
Hate to say it this way but I would have it sonic tested. I myself have never tested a 7.3 block. I would guess it is a very nice thick walled block. I know from my FE/427 engines it is common for .125 thrust non thrust and .100 in-between cylinders. I have even run some .09X numbers between as they are just holding water down low. Most shops charge $100 and it is a good price to pay before sleeves. As 8 holes are about $800
what is a sonic test? I'm guessing to test to see if there is enough of the cylinder wall to be safe?
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Joined: Mar 2007
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From: Kingsland, GA
I am pissed at them. I told them I want it as close to stock size. I'm not a machinist and even I know to sleeve the damaged one match it to the rest.
They should've contacted me and told me what was going on. Not to mention its 4 days last when they said it was supposed to be done and I had to call them.
I am still unsure if they did all to .060 over.. I will call them again tomorrow to get the whole story.
They should've contacted me and told me what was going on. Not to mention its 4 days last when they said it was supposed to be done and I had to call them.
I am still unsure if they did all to .060 over.. I will call them again tomorrow to get the whole story.
More Turbo
Joined: Feb 2015
Posts: 699
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From: DFW