Alternative header attachment on 525EFI's ?

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02-06-2019 | 05:22 PM

#31

F-2 Speedy

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From: Midwest & T-Rock

Quote:

Originally Posted by HyFive578

They should be; they are definitely quality parts and they're priced accordingly. They do not have an allen head in the top, that would be ideal. Now should they be installed hand tight until they hit the stop in the center or do I have to torque them in as well? Because they don't bottom out, it would seem that if I torque them in, I run the risk of damaging the top thread by jamming the stop into the crown of the hole.

not sure on the install

02-06-2019 | 08:22 PM

#32

Griff

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From: Omaha/LOTO

I had iron heads so I used red loctite and snugged them tight at maybe 10# of torque.

02-06-2019 | 09:24 PM

#33

HyFive578

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From: Long Island, NY

Quote:

Originally Posted by Griff

I had iron heads so I used red loctite and snugged them tight at maybe 10# of torque.

The 525 has aluminum heads.

02-06-2019 | 09:28 PM

#34

F-2 Speedy

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From: Midwest & T-Rock

I think blue LT would be okay, I think Mercury uses red LT on the lower valve cover studs, I had to heat one up with a torch to get it out

02-07-2019 | 07:46 AM

#35

Tahoe540

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From: Reno, NV

I installed the ARP stainless studs on my Brodix heads to install lightning headers. I ended up having to remove one on each side (forgot which ones) and install short bolt due to clearance issues. I did snug them down with the old 2 bolt method and have no thread issues. I checked them every time before we went for a while and they stayed tight.