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262 Head Bolts

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
Printed Date: 18 Sep 2020 at 4:04am
Software Version: Web Wiz Forums 11.10 -

Topic: 262 Head Bolts
Posted By: DCAC
Subject: 262 Head Bolts
Date Posted: 12 Dec 2019 at 6:00am
I'm rebuilding a 262 diesel in a D17 series 4. Am thinking of getting new head bolts, but they are quite spendy from AGCO. I've heard of arps studs, are these what I should go with, or perhaps just grade 8 bolts from Fastenal or the like? What do you recommend? Maybe the old ones are still good, but since I'm this far in, I don't want to have trouble down the road. Thanks for any and all replies!

Posted By: Calvin Schmidt
Date Posted: 12 Dec 2019 at 6:20am
We used ARP head bolts. Engine design does not have enough bolts so good bolts are critical. ARP are more than double the tensile strength of Grade 8. Sleeve stand out of .004 and a proper diesel head gasket are also critical.

Nothing is impossible if it is properly financed

Posted By: MattLF9
Date Posted: 12 Dec 2019 at 6:33am
I once got "grade 8" bolts from Fastenal for an Oliver 1555 diesel.
Went to torque these new head bolts down and they stretched like they were made of butter.
Grade 8's don't stretch a half inch at the threads, they should snap.

A little CQB never hurt anybody.

Posted By: DCAC
Date Posted: 12 Dec 2019 at 6:56am
Thanks, gentlemen for your replies! Calvin, where did you get these bolts? Was there a kit or part number that you used, and if so, would you happen o know that number?

Posted By: Calvin Schmidt
Date Posted: 12 Dec 2019 at 7:27am
I got the ARP bolts from Norm Meinert. His business was sold to Pfouts Family Farm
Mark Pfouts. Hopefully he has them. 1-440-570-3653
I got rod bolts for a D-21 from Agco and they were stamped ARP. Maybe the 262 heads bolts from Agco are ARP.  ARP bolts are not cheap !

Nothing is impossible if it is properly financed

Posted By: Pfouts Family Farm
Date Posted: 12 Dec 2019 at 8:22am
Yes, we normally have the ARP head stud kits for both the WD-45 D230 and also for the D17/D19 D262 engines in stock. If for whatever reason they are out of stock, I can usually get them within a week or so.

I am also more than willing to help with any other ARP bolt/stud needs.

Posted By: HudCo
Date Posted: 12 Dec 2019 at 11:50am
the correct nut is also a must i think the wrong nuts are even worse than the wrong stud

Posted By: exSW
Date Posted: 12 Dec 2019 at 3:16pm
See if you can cross them to a Caterpillar head bolt. That's the go to on a D282 IH. High quality upgrade that's cheaper than ARP's.

Posted By: MACK
Date Posted: 12 Dec 2019 at 8:46pm
1/2 fine three lug nuts will work. Good fire rings are more important than bolts, nuts or gasket.        MACK

Posted By: DCAC
Date Posted: 13 Dec 2019 at 2:33pm
Thanks, Gentlemen, for all the advice and replies, parts are on order!

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