The Ford Barn

3739ford · 11-24-2019, 06:14 PM

Quick question, short answer.

Do the bolts for intake require a lock washer, flat washer, or no washer at all.

qmdv · 11-24-2019, 06:56 PM

Not sure what if anything is required. I kind of like alloy steel black oxide allen head bolts with SAE flat washer. Not close to stock but it looks good with aluminum intake.

Kube · 11-24-2019, 06:57 PM

Quote:

Originally Posted by 3739ford

Quick question, short answer.

Do the bolts for intake require a lock washer, flat washer, or no washer at all.

Cast intake NO washers authentically. Aluminum intakes required hex head bolts and cadmium plated flat washers.

3739ford · 11-24-2019, 08:13 PM

Thanks guys, it is a cast iron intake, really appreciate the responses.

Bored&Stroked · 11-25-2019, 08:50 AM

There is no reason to NOT use a hardened flat washer - underneath a lock washer (at least that is how I do it). This helps prevent galling on the surface and makes for a bit nicer tightening/torque sequence. Now - if you're building a 100% perfect restoration, you'd need to do what Henry did - and I have no clue as to exactly what that is! What I do know is that the intake bolts from Ford are very specific to the intake manifold . . . easy to recognize even in a pile of hardware!

3739ford · 11-25-2019, 01:19 PM

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Bored&Stroked, my 39 pickup came with 8ba engine installed and this is what I thought was intake bolt.

11-24-2019, 06:14 PM	#1
3739ford Senior Member Join Date: Feb 2017 Location: Dothan, AL Posts: 325	Intake manifold bolts Quick question, short answer. Do the bolts for intake require a lock washer, flat washer, or no washer at all.

11-24-2019, 06:56 PM	#2
qmdv Senior Member Join Date: Dec 2012 Location: Payette, ID Posts: 935	Re: Intake manifold bolts Not sure what if anything is required. I kind of like alloy steel black oxide allen head bolts with SAE flat washer. Not close to stock but it looks good with aluminum intake.

11-24-2019, 08:13 PM	#4
3739ford Senior Member Join Date: Feb 2017 Location: Dothan, AL Posts: 325	Re: Intake manifold bolts Thanks guys, it is a cast iron intake, really appreciate the responses.

11-25-2019, 08:50 AM	#5
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,064	Re: Intake manifold bolts There is no reason to NOT use a hardened flat washer - underneath a lock washer (at least that is how I do it). This helps prevent galling on the surface and makes for a bit nicer tightening/torque sequence. Now - if you're building a 100% perfect restoration, you'd need to do what Henry did - and I have no clue as to exactly what that is! What I do know is that the intake bolts from Ford are very specific to the intake manifold . . . easy to recognize even in a pile of hardware!