mounting hardware for EFI manifolds?
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mounting hardware for EFI manifolds?
i'm (finally) bolting my EFI manifolds on this weekend. i've got the studs installed in the head already.
my question- the original setup had these thick washer-type things between the bolts and the manifolds.
is there any advantage to re-using these, instead of just using normal washers?
my question- the original setup had these thick washer-type things between the bolts and the manifolds.
is there any advantage to re-using these, instead of just using normal washers?
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Joined: Dec 2007
Posts: 7,987
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From: Boise, Idaho
The original ones were convex. If you look at them closely, they're slightly dished.
This helps to put extra pressure on the manifold when they're torqued down since they act as a spring. It's also why they're $10 a piece from Ford.
I think those come with the bolts though. Which, on another similar note, the stock bolts were special too in that the threads weren't evenly spaced. This makes them grip a lot harder and not loosen over time.
I just used two regular hardened washers and then added a split washer for the same effect. Puts 3 washers on each instead of 1, but I'm not paying $130 for washers.
This helps to put extra pressure on the manifold when they're torqued down since they act as a spring. It's also why they're $10 a piece from Ford.
I think those come with the bolts though. Which, on another similar note, the stock bolts were special too in that the threads weren't evenly spaced. This makes them grip a lot harder and not loosen over time.
I just used two regular hardened washers and then added a split washer for the same effect. Puts 3 washers on each instead of 1, but I'm not paying $130 for washers.
Post Fiend
Joined: Jun 2003
Posts: 8,209
Likes: 12
From: Black Hills of SD
Did you drill in the locating dowel? When I put the efi manifolds on an earlier head I found there was nothing to really index them to the head, just kind of best guess method of where to place the manifolds without that locator pin.
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