jon@dakota-truck.net wrote:
: Pukeloser@aol.com wrote:
: : Hey all,
: : I know this question has been raised before, are head bolts (or studs) for a
: : magnum the same as for a non-magnum. I ordered some ARP studs from summit and
: : I think he looked up "A" engine so I want to be sure they'll work.
: No - I believe most of them are the same but there are a couple
: that are different. I just ordered a set of head bolts for a
: 318 Magnum and when I was scanning through the instruction sheet
: that came with them, it mentioned something about that. I don't
: have the exact info right in front of me here, but I'll try to
: remember to grab the sheet the next time I head down to the shop
: and I'll post something about it here tomorrow. I suspect you'll
: probably just end up returning them for the correct ones, but
: at least that'll get the info into the archives. :-)
: --
Ok, here's that info...
V8 Magnum head bolts consist of 5 long (4 5/8") and 5 short (2") bolts
per head. The A engine bolts (1964-1991) had 1 long bolt, 4 medium bolts,
and 5 short bolts. Although the Magnum long bolts are the same as the
single pre-magnum long bolt, all of the other bolts are different
lengths - that single long bolt is the only common one.
As long as I'm on the subject, here's the torque sequence for the
Magnum heads...
If you are looking at the head with the spark plugs and exhaust manifold
ports facing you, and number the head bolts starting from the top left
to the top right (the long bolts) as 1 through 5, and number the bolts
from the bottom left to the bottom right (the short bolts) as 6 through
10, the sequence is:
3, 8, 2, 7, 4, 9, 1, 6, 5, 10
Following that sequence, torque all bolts to 50 lb-ft, then to 105 lb-ft,
then 105 lb-ft again.
---Jon-
.---- Jon Steiger ------ jon@dakota-truck.net or jon@jonsteiger.com -----. | I'm the: AOPA, DoD, EAA, NMA, NRA, SPA, USUA. Rec & UL Pilot - SEL | | '70 Barracuda, '92 Ram 4x4, '96 Dakota, '96 Intruder 1400, '96 FireFly | `----------------------------------------- http://www.jonsteiger.com ----'
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