ftyler: Hello again. I checked back on a couple of your past posts to see if I could figure the status of your rebuild, and exactly where you are in regards with your project. I don't know exactly what you have done yourself, and/or what you may have jobbed out to a machine shop, and/or what fasteners you/they may or may not have replaced?
I did read your post about over doing things, and having to remove the broken bolts. Don't know what else in your 292 that you may have overdone (too much torque), or possibly reused as far as bolts that may be suspect or might cause failure?
As a general rule in engine rebuilding there are four areas in the engine where the bolts are under constant stress and load. In order of stress loads and fatigue they are-
1. rod bolts (all)
2. head bolts (thermal,distortion)
3. main caps (all)
4. valve train (thermal,distortion)
Bolts used in these areas are subject to thermal expansion, cyclic thrusting, shock loading, side loading, and distortion. Bolts can distort by any or all of these effects. To eliminate any suspect fasteners and the possible effects of failures of same, it is standard practice to replace them with new.
If you have not properly prepped your block with regards to cleaning/chasing the bolt holes on the mains or deck, or you have assembled your block with stretched or suspect rod bolts, or maybe you possibly have mis-torqued somewhere along the way you should stop where you are and take stock of what's happening. All your hard work and bucks may end up along side the road, BROKEN. If you have any suspect hardware, just toss it. Not worth the risk of future trobles.
Contact ARP by phone and talk with them. They will do you right. They may not have 292 listed, but I know for a fact they sell just about any diameter and length bolt or stud you could need. Talk with them and tell them your needs. They have the resources and technical people to help you. They can fill your order and ship direct to you or the nearest dealer to you. Follow there advise, and you can't go wrong.
To you others that responded to this post: I realise that this is a Chevy engine and not NASA! But all Chevy engines are only as good and dependable/reliable as the parts and pieces of the whole. And most importantly the craftmanship that is applied to those parts and the assembly.
I work in an automotive machine shop. I have been a machinist all my adult life. I have assembled many, many engines. I have machined several hundred engine blocks and heads through the years, so I think I might know a little of what I am talking about. I realize that we all mis-speak, or are in error on occasion. But I try to share my knowledge and imput when and where I can with some on the board that have questions. I do try to give the facts as I know them.
For all interested to know the proper procedure on the installation of either headbolts and/or main bolts, go to site-
www.arp-bolts.com and click on products.Check out the main bolt,
headbolt installation procedures as per ARP. They explain about chasing the threads with a tap, and
to lube the bolts before installation. They reccommend a Moly lube that they sell as they say it will give more accurate torque readings. ARP is the standard of the industry, as there are millions of engines with there products in them. I think they could be on to something!
Thanks for listening.
Think Chevy!
:rolleyes:
