Girdle sealant
#2
Team Owner
one surface should be coated evenly,
a roller works well this sealant Loctite 574 sets up in the absence of air
a roller works well this sealant Loctite 574 sets up in the absence of air
#5
Rennlist Member
#6
Archive Gatekeeper
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The layer of 574 ends up being quite thin, certainly translucent and only the slightest bit orange in color.
If you're doing it wrong it looks like this:
Degreased:
If you're doing it wrong it looks like this:
Degreased:
#7
Rennlist Member
Rob's photography skills and proliferation make me feel inadequate.
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#8
Team Owner
to clean that surface hold a razor blade perpendicular to the surface back and forth then wipe down with acetone
#9
Archive Gatekeeper
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hold a razor blade perpendicular to the surface back and forth
#11
Rennlist Member
I had read in some Porsche Magazine that it was critical to use the proper roller to apply the loctite, as the depth of the application would have a direct affect on the bearing clearance (liquids don't compress).
Although I suppose this is true at some molecular level, I went ahead and torqued the cradle with no loctite and took a dial bore gauge to the center mains, and then disassembled, used roller to apply the loctite, torqued the cradle, and remeasured, then disassembled, used my finger to spread the loctite and reassembled, and re-measured. No discernable difference in the bore spec in any of the three assemblies.
And yes there was a period in my life where I had more time than brains.
Although I suppose this is true at some molecular level, I went ahead and torqued the cradle with no loctite and took a dial bore gauge to the center mains, and then disassembled, used roller to apply the loctite, torqued the cradle, and remeasured, then disassembled, used my finger to spread the loctite and reassembled, and re-measured. No discernable difference in the bore spec in any of the three assemblies.
And yes there was a period in my life where I had more time than brains.
#12
Archive Gatekeeper
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I have a mental image of how much 574 is 'correct' but during that particular 20 minutes in time no one is just sitting there with a camera to document it .
Here's a shot of Dennis Kao's engine showing the 'bead' of loctite after girdle assembly. They used 573 instead of 574, hence the green.
https://rennlist.com/forums/6229452-post27.html
Here's a shot of Dennis Kao's engine showing the 'bead' of loctite after girdle assembly. They used 573 instead of 574, hence the green.
https://rennlist.com/forums/6229452-post27.html
#13
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Although I suppose this is true at some molecular level, I went ahead and torqued the cradle with no loctite and took a dial bore gauge to the center mains, and then disassembled, used roller to apply the loctite, torqued the cradle, and remeasured, then disassembled, used my finger to spread the loctite and reassembled, and re-measured. No discernable difference in the bore spec in any of the three assemblies.
And yes there was a period in my life where I had more time than brains.
Although I suppose this is true at some molecular level, I went ahead and torqued the cradle with no loctite and took a dial bore gauge to the center mains, and then disassembled, used roller to apply the loctite, torqued the cradle, and remeasured, then disassembled, used my finger to spread the loctite and reassembled, and re-measured. No discernable difference in the bore spec in any of the three assemblies.
And yes there was a period in my life where I had more time than brains.
#14
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I had read in some Porsche Magazine that it was critical to use the proper roller to apply the loctite, as the depth of the application would have a direct affect on the bearing clearance (liquids don't compress).
Although I suppose this is true at some molecular level, I went ahead and torqued the cradle with no loctite and took a dial bore gauge to the center mains, and then disassembled, used roller to apply the loctite, torqued the cradle, and remeasured, then disassembled, used my finger to spread the loctite and reassembled, and re-measured. No discernable difference in the bore spec in any of the three assemblies.
And yes there was a period in my life where I had more time than brains.
Although I suppose this is true at some molecular level, I went ahead and torqued the cradle with no loctite and took a dial bore gauge to the center mains, and then disassembled, used roller to apply the loctite, torqued the cradle, and remeasured, then disassembled, used my finger to spread the loctite and reassembled, and re-measured. No discernable difference in the bore spec in any of the three assemblies.
And yes there was a period in my life where I had more time than brains.
#15
Three Wheelin'
[QUOTE=69gaugeman;10835688]Never going to happen. The sealant doesn't harden except in the absence of oxygen and the presence of metallic ions. Will wash out and get caught in the filter.
If you look at the pictures provided this hasn't happened and is part of the concern. As far as not cleaning the mating surfaces and just reapplying the sealant I would be hugely concerned about contaminents sticking to the existing sealant causing a less than perfect seal. I can't imagine and wouldn't takie an engine this far apart and not have every mating and sealing surface spotless.
If you look at the pictures provided this hasn't happened and is part of the concern. As far as not cleaning the mating surfaces and just reapplying the sealant I would be hugely concerned about contaminents sticking to the existing sealant causing a less than perfect seal. I can't imagine and wouldn't takie an engine this far apart and not have every mating and sealing surface spotless.