Loctight Or Thread Sealant?

K

kendawg73

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#1

• May 9, 2017

• #1

I know the flywheel bolts on the 5.0 go through the crank so oil will leak.. so they need to be sealed... but when I search I see people saying to loctight the flywheel bolts so they don't come loose... but loctight isn't really going to seal them from oil coming out will it? the stuff is like water when you put it on... Or should I just use a thread sealant (like the ARP one)?

And if I do need to use loctight, which one Blue or Red?

thanks...

 

mikestang63

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#2

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• #2

thread sealant

 

jrichker

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#3

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Teflon pipe dope from the hardware store, Home Depot or Lowes.

 

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Noobz347

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#4

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Refer to the attached FMS installation manual:

 

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• FordInstShtM-7560-A302.pdf

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K

kendawg73

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#5

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• #5

Noobz347 said:

Refer to the attached FMS installation manual:

Click to expand...

hmm, well first, I have all new ford racing stuff that listed in that doc to do my install when I put motor back in... lol.... so I'm good there... ( I got new everything...from the seal out...)

but I see they say "
Loctite thread lock should be used to keep the bolts tight and seal the threads from leaking oil
past the threads and onto the clutch."

they don't say which one red or blue though.... hmmmm so I guess it does seal the oil from coming past then.... I would hope.

 

Noobz347

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#6

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I've always used RED because it's a high heat area.

Additionally, the stuff that I use is a paste: https://www.summitracing.com/parts/lct-38725

Now, you probably don't need all of that but it covers just about every situation for thread lock/seal.

 

mikestang63

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#7

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Noobz347 said:

I've always used RED because it's a high heat area.

Additionally, the stuff that I use is a paste: https://www.summitracing.com/parts/lct-38725

Now, you probably don't need all of that but it covers just about every situation for thread lock/seal.

Click to expand...

Love the red stuff- you need to use an impact and/or heat/flame to get bolts off with that stuff on

 

Mustang5L5

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#8

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• #8

I used red on mine.

Related derail. Are flywheel bolts one time use?

 

General karthief

wonder how much it would cost to ship you a pair

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#9

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Man I hope not!

 

mikestang63

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#10

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MIke, for $10 a set, it's cheap insurance to buy a set of new Felpro flywheel bolts.

 

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Noobz347

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#11

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I've reused them many many times. The torque on them is really not very much. I also run a billet steel flywheel.

 

Bullitt347

I have been doing it wrong this whole time

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#12

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• #12

Cross threading is better than loctite...no?

 

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General karthief

wonder how much it would cost to ship you a pair

Mod Dude

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#13

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Bullitt347 said:

Cross threading is better than loctite...no?

Click to expand...

Till you have to take them off.

 

D

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May 9, 2017

#14

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• #14

A crossed thread is a tight thread.

 

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Grn92LX

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#15

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• #15

Loctite and spend a few bucks on a set of arp's.

 

K

kendawg73

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#16

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• #16

Grn92LX said:

Loctite and spend a few bucks on a set of arp's.

Click to expand...

You know, I bought all ARP bolts for everything else, but for some reason, I bought the Ford Racing flywheel bolt kit.... been buying stocking parts for past 3 years... guess I wasn't thinking... but at least I have new bolts...

 

Realmongo

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#17

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• #17

To see what it said, I cracked open the 1993 Ford Mustang Service Manual and it said to coat each flywheel bolt with Ford Thread Sealant P/N D8AZ-19554-A, which crosses over to Loctite PST 592 High Temperature Thread Sealant.