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Author: Subject: Manifold nuts
donut

posted on 29/11/05 at 07:15 PM Reply With Quote
Manifold nuts

I have bought some proper Ford blue exhaust manifold nuts and some very nice nylocks for the inlet manifold that look like copper (probably not though). As the Ford nuts are the real deal will i need washers or will locktight do? If washers, which are best.

ta

[Edited on 29/11/05 by donut]





Andy

When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
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Danozeman

posted on 29/11/05 at 08:11 PM Reply With Quote
Theyd be ok with locktite i would imagine.. Spring washers work too.

If theyr flange nuts u wont need anything.

[Edited on 29/11/05 by Danozeman]





Dan

Built the purple peril!! Let the modifications begin!!

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RazMan

posted on 29/11/05 at 09:34 PM Reply With Quote
I'm doing the same this week. I bought some copper coated exhaust manifold nuts which have a crimp in them to make them act like nylocs. I'm using plain stainless + spring washers.
I'm not sure if your nylocs will stand the heat of a manifold (even an inlet) so you are probably better off with the same combination of washers with a full nut.





Cheers,
Raz

When thinking outside the box doesn't work any more, it's time to build a new box

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Chippy

posted on 29/11/05 at 10:37 PM Reply With Quote
Very little point using locktight on exhaust manifold nuts, the heat will soften it. If they are the genuine artical they self lock anyway, if not use shakeproof washers.

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donut

posted on 29/11/05 at 10:59 PM Reply With Quote
I will probably use some of my mates double shake proof washers from Worth. They are amazing and impossible (well almost) to undo once on.





Andy

When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
http://www.flickr.com/photos/andywest1/

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NS Dev

posted on 29/11/05 at 11:29 PM Reply With Quote
I would not panic too much over locking the nuts!

Nylocs will hold any inlet manifold on an engine as long as the exhaust is the opposite side of the head.

Self locking nuts will hold the exhaust manifold.

For the inlet I sometimes don't even use nylocs so I can run the nuts off by hend when it has to come off, and they never come loose and that is at high rpm during racing!

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NS Dev

posted on 29/11/05 at 11:30 PM Reply With Quote
ps spring washers on the exhaust will probably get tempered the first time you really work the engine anyway, 500 deg c is not uncommon on the exhaust!
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