283 diesel rod bolts

JBR · Oct 6, 2017

Hello was wondering if anyone has had any issues with the 12 point rod bolts in these engines. I am in the process of putting one together and I am being told to use a ARP bolt instead. I have used there hardware before but it has always been in the automotive applications. My biggest issue with using these ARP bolts is that they are not made for rod applications they are made by them to be used as a regular fastener. I'm thinking I'm gonna just use the regular 12 point stock bolts. Also is it worth making the oil pan on these deeper and extending the sump to hold more oil? Any input appreciated. Thanks

Wisconsin Cowman · Oct 6, 2017

I would just order the rod bolts from an Agco dealer.

Dieseltech · Oct 6, 2017

I would DEFINATELY use the ARP bolts! That's what I put in my IH D-282 rods last winter. You can get any length you want, tensile strength is higher, and mine were less cost than the IH bolts were that MAY be made in China. Do a google search of ARP, bet you will like what you see, and made in the USA too!

Oliver 500 Wa · Oct 6, 2017

+1 on this ^

Whenever I rebuild an engine, I use ARP hardware on everything. Rods, mains, head studs, flywheel bolts. Overkill maybe, but when you put so much labor into something like a rebuild do you really want to chance failure of a used fastener or a fastener of unknown source.

jr1983 · Oct 6, 2017

I only have done a couple but when I did it I think I drilled and tapped the rods out to 7/16 nf (its been a while) then torqued appropriately. Used plasti gauge to avoid crushing the bearing. Eliminates the weak spot in one.

greg oliver · Oct 6, 2017

The rod bolts weren't always the problem . This 1650 had wrist pin failure and ventilated the block. I pulled the crank out and had it checked and reground.

Jd7020 · Oct 6, 2017

Call maibach if you want agco ones, they get them strait from wakashaw and are a fraction of the price, I've had both and they are identical.

jr1983 · Oct 7, 2017

True but they are the most common weak spot.

JBR · Oct 7, 2017

Thanks for all the replies I will call Maibach.

brutus49DC · Oct 7, 2017

The wrist pins are what causes the bolts to break. ARP makes good stuff. I have been told AC 426 engines had ARP rod bolts from the factory.

jr1983 · Oct 8, 2017

The bolts are not large enough for the size of engine and that is fact. That's why most every other manufacturers uses larger rod bolts than Waukesha.

brutus49DC · Oct 8, 2017

some of that might be true but there are engines making many times more horse power at 3 or 4x the rpm's than a 310 runs with 3/8 rod bolts, yes they might be small compared to other brands but they don't seem to bother after putting in one piece bushings and 12 pt. bolts, primarily it's the pounding caused by loose 2 piece bushings that broke the bolts

J. Schwiebert · Oct 8, 2017

Early 283 engines had 7/16inch bolts. I started to work for an Oliver dealer in 1960 and that winter we had 3 88/Super 88 engines that punched holes in the block and in all of them the wrist pin bushings were not in the rods any more.

283 diesel rod bolts

JBR

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Wisconsin Cowman

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Dieseltech

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Oliver 500 Wa

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jr1983

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greg oliver

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Jd7020

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jr1983

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JBR

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brutus49DC

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jr1983

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J. Schwiebert

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