826 with a 358D motor overhaul.

jimdog

Member
Overhauling my 358 engine.Looking for rod bolts,talked to a tech from ARP today and it seems they don't make bolts for that engine. The bolts that came out of it were marked on the head ERBUS 10.9.They are 7/16"X 20TPI X 3 11/16" long. They should be TTY bolts but I am not sure.Most every one says I should replace them.I believe ARP makes some of the best bolts out there.Who would you say is number two in quality? They are all proud of there bolts.
Thanks for any help.
 
Pay the price ,may be cheaper than a busted block. Do not skimp on this item.
Get them from Case-IH then you will have what it calls for.
 

I would be talking to my machine shop. They shop for this stuff every day and have sources to match everyone's budget.
 
I have rebuilt many Engines in my fifty years and your not working on a Chebby , your working on and I H there is no need to change rod bolts as these bolts are not a use once and throw away like the junk made today. worry more about other things when rebuilding that engine like fitting the pistons to the hole making sure that the sleeves are installed correctly , having the line bore checked and line bored Now remember i said LINE BORED not line honed . Having the rods rebuilt . making sure the valves are set at the correct hight in the head , if they are setting to low it will make for a hard starter. . stop worrying about rod bolts .
 
TV I am glad you posted that. I like you have built many ih engines and never had rod bolt problems. Only time we ever used new were when building expensive 466 pulling tractor engines. Not to rain on his parade but I am like you better things to worry about and spend money on.
 
(quoted from post at 18:12:24 12/13/17) I have rebuilt many Engines in my fifty years and your not working on a Chebby , your working on and I H there is no need to change rod bolts as these bolts are not a use once and throw away like the junk made today. worry more about other things when rebuilding that engine like fitting the pistons to the hole making sure that the sleeves are installed correctly , having the line bore checked and line bored Now remember i said LINE BORED not line honed . Having the rods rebuilt . making sure the valves are set at the correct hight in the head , if they are setting to low it will make for a hard starter. . stop worrying about rod bolts .

Mr. Vet, I think that you mean Align Bored.
 
10.9 is the METRIC version of grade 8, so those bolts are metric. You should call your local Case/IH dealer and have them look in their factory service manual to make sure they are NOT torque to yield before reusing them. Last book I checked was for late DT466C and it had a maximum length specification.
 
Well then It was wrong on the LINE BORING BAR that my one old time friend had . Just sayen . As he had the latest and greatest , Had i had the bucks behind me i would have owned his shop when he had his heart problems since i also could run everything in there . as many times i would have something that i needed done fast and dick would be swamped and depending on what needed done he would just say you know where the machine is . I could do the LINE Bore as we called it but i was not as fast on set up as Dick , his bar could do up to a V 16 diesel or down to a Briggs and Stratton . When ever i had a D361 -407 that is the first stop out of the tank then the next stop- was the stationary boreing machine to do the cylinder bores OFF the center line of the crank , Just might scare ya on how much those blocks shift and mor then once we had to do a double bore on one of them blocks to get all six inline with the crank. . Yes some call it Aline bore some of us don't so sue me .
 
Are you saying if it is a torque to yield bolt it should be replaced? If not someone should have a maximum length spec.on it .I talk to a IH service mgr.awhile back and he said they do not always replace rod bolts.I will talk to him and see if he can find any history on these bolts,if they are a TTY or not.
Thanks for your help.
 
TTY bolts can be reused sometimes, it depends on the engines manufacturer. If they can be reused they will have a maximum length specification, and if they have reached the limit the metal has been fatigued and is a failure waiting to happen. Deere says to replace every time, that is why most GOOD Deere overhaul kits include the rod bolts. The materials science has come a long way, and clearances are much smaller now. The TTY system gives much more consistent clamping force.
 

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