Heads aligned with intake?
Road Captain
Joined: Sep 2012
Posts: 675
Likes: 32
From: Massachusetts
jugs have alignment dowels to align them to the cases, and dowels to align the heads to them. (and there aint much slop in the head bolts where they pass through the head.
that's why the intake manifold gaskets (seals) are tapered, so they squish down and make a good seal.
you sure you have intake leaks? you use loctite on the bolts? (i made that mistake once, and mine loosened up on me). are the flanges flat/true? (they can warp)
Tourer
Joined: May 2011
Posts: 463
Likes: 0
From: Kentucky
Yeah this
no
jugs have alignment dowels to align them to the cases, and dowels to align the heads to them. (and there aint much slop in the head bolts where they pass through the head.
that's why the intake manifold gaskets (seals) are tapered, so they squish down and make a good seal.
you sure you have intake leaks? you use loctite on the bolts? (i made that mistake once, and mine loosened up on me). are the flanges flat/true? (they can warp)
jugs have alignment dowels to align them to the cases, and dowels to align the heads to them. (and there aint much slop in the head bolts where they pass through the head.
that's why the intake manifold gaskets (seals) are tapered, so they squish down and make a good seal.
you sure you have intake leaks? you use loctite on the bolts? (i made that mistake once, and mine loosened up on me). are the flanges flat/true? (they can warp)
Seasoned HDF Member
Joined: Apr 2008
Posts: 10,135
Likes: 4,774
From: Sandpoint, Idaho
What bike are you asking about?
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Seasoned HDF Member
Joined: Sep 2012
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From: almost there
97 WG. I have had intake leaks in the past and had them reoccur too soon after fixing. The thought just came to mind maybe the heads could be off. The heads were shaved when I built it.
If or when it leaks again, I bought new S&S flanges & S&S seals for the S&S manifold. Stock HD seals are thicker, should I use the thicker HD seals?
If or when it leaks again, I bought new S&S flanges & S&S seals for the S&S manifold. Stock HD seals are thicker, should I use the thicker HD seals?
Thread Starter
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Seasoned HDF Member
Joined: Sep 2012
Posts: 6,570
Likes: 590
From: almost there
no
jugs have alignment dowels to align them to the cases, and dowels to align the heads to them. (and there aint much slop in the head bolts where they pass through the head.
that's why the intake manifold gaskets (seals) are tapered, so they squish down and make a good seal.
you sure you have intake leaks? you use loctite on the bolts? (i made that mistake once, and mine loosened up on me). are the flanges flat/true? (they can warp)
jugs have alignment dowels to align them to the cases, and dowels to align the heads to them. (and there aint much slop in the head bolts where they pass through the head.
that's why the intake manifold gaskets (seals) are tapered, so they squish down and make a good seal.
you sure you have intake leaks? you use loctite on the bolts? (i made that mistake once, and mine loosened up on me). are the flanges flat/true? (they can warp)
Are you saying Loctite on the intake bolts? I don't think I did last time but have not noticed them loosening. Can I over tighten intake bolt and cause the leak?
Last edited by aces&8s; Jan 5, 2014 at 10:48 PM.
Seasoned HDF Member
Joined: Apr 2008
Posts: 10,135
Likes: 4,774
From: Sandpoint, Idaho
97 WG. I have had intake leaks in the past and had them reoccur too soon after fixing. The thought just came to mind maybe the heads could be off. The heads were shaved when I built it.
If or when it leaks again, I bought new S&S flanges & S&S seals for the S&S manifold. Stock HD seals are thicker, should I use the thicker HD seals?
If or when it leaks again, I bought new S&S flanges & S&S seals for the S&S manifold. Stock HD seals are thicker, should I use the thicker HD seals?
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Seasoned HDF Member
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From: almost there
That's exactly why I had the thought.
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Seasoned HDF Member
Joined: Dec 2010
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From: Coromandel Peninsula New Zealand
On a twin cam you can't get the heads out of line and even if you decked the heads it doesn't change the interface at all. I would suggest you might be over tightening the bolts.
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Seasoned HDF Member
Joined: Sep 2012
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From: almost there
Thanks Span, I was hoping you would chime in.