Engine building guru ?'s
09-05-2006 | 04:17 PM
#1
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From: New Jersey
Engine building guru ?'s
Hey pros just have a couple of questions reguarding engine machining 101.
1)If an engine block was line bored, how long of a running time before dimensions would or could change?Would all caps be the same demension?or could one or two be different?
2)When disassembling a short block and you noticed a bent rod,would you check the bore for damage and could a bent rod cause a cylinder to go out of round? If the cylinder was on the border of SO-SO would you take the time to fix it right or just slap it together?
Thanks way in advance
Nordic95
1)If an engine block was line bored, how long of a running time before dimensions would or could change?Would all caps be the same demension?or could one or two be different?
2)When disassembling a short block and you noticed a bent rod,would you check the bore for damage and could a bent rod cause a cylinder to go out of round? If the cylinder was on the border of SO-SO would you take the time to fix it right or just slap it together?
Thanks way in advance
Nordic95
09-05-2006 | 04:28 PM
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From: New Jersey
Re: Engine building guru ?'s
Originally Posted by SB
Well, if I remember by your pictures when the cam was being degreed and it was going back together, it doesn't look like really any machining was done. You could still see the headgasket imprints like the heads where just removed after some years of use.
So....my off the wall guess - from the pics your original builder posted - is that no machining was done.
I mentioned this before on the other thread.
Sincerely,
just another backyard mechanic
So....my off the wall guess - from the pics your original builder posted - is that no machining was done.
I mentioned this before on the other thread.
Sincerely,
just another backyard mechanic
Nordic95
09-05-2006 | 04:36 PM
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From: New Jersey
Re: Engine building guru ?'s
Originally Posted by SB
Deleted - you may want to change my quotes. Sorry.
Put them back up silly. I need answers to my engine building woes,but I have to be a gentlman about it,no name calling or pointing fingers.I appreciate all the info you guys provide.I just trying to figure out why I went from,"you just need a valve adjustment"(old builder) to "the machine work on these blocks s--k" we need to do it right this time(this was from new builder). Nordic95
Last edited by nordic95; 09-05-2006 at 04:40 PM.
09-05-2006 | 05:44 PM
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From: New Jersey
Re: Engine building guru ?'s
Here is a picture of the rod that came out of the damaged cylinder that was over looked.Would this cause the out of round condition that would also oil down this cylinder?This rod came out of the stock running motor during the first build.
Thanks
Nordic95
Thanks
Nordic95
Last edited by nordic95; 09-05-2006 at 07:27 PM.
09-05-2006 | 07:55 PM
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From: frankenmuth michigan
Re: Engine building guru ?'s
When I look at the picture of the rod it looks like it has stock rod bolts and nuts. Arp nuts are usually 12 pt on connecting rods and most aftermarket rod bolt nuts are also black or polished looking from the extra treatments they get,not browish rust colored. Sounds like your "friend" needs some serious motor work to straighten out "his" problems he has found,Smitty
09-05-2006 | 08:00 PM
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From: New Jersey
Re: Engine building guru ?'s
Originally Posted by articfriends
When I look at the picture of the rod it looks like it has stock rod bolts and nuts. Arp nuts are usually 12 pt on connecting rods and most aftermarket rod bolt nuts are also black or polished looking from the extra treatments they get,not browish rust colored. Sounds like your "friend" needs some serious motor work to straighten out "his" problems he has found,Smitty
Nordic95
