missed using sealant - will it leak ?

[trond]

When assembling the block I did not use any sealant on the two highlighted areas. Engine is only half way asembled and I am considering to take it apart again to add sealant to reduce risk of oil leak along the 8 mm stud and nut. What do you think ?

[john walker's workshop]

I wouldn't worry about it. I like to use an aluminum washer on the lower stud, just in 1/1000th chance there is seepage.

[john walker's workshop]

Just a personal trick, I remove that lower stud before mating the case halves and reinstall it later. Then you don't have to wiggle the right case half around until the stud aligns with the hole. Less chance of the chain and rods falling sideways, even with their supporting clips.

[PeteKz]

Originally Posted by john walker's workshop

I wouldn't worry about it. I like to use an aluminum washer on the lower stud, just in 1/1000th chance there is seepage.

As usual, John calls it. I might swab some sealer around the nut and washer. These are not under oil pressure.

[Flat6pac]

John, I do like the idea. It would keep the intermediate shaft bearing from being knocked out of place which is always my worry.
Bruce

[john walker's workshop]

Makes mating the cases a snap. Start the two studs at the flywheel end and mate 'em. That stud always bugged me since forever, just started doing this recently, duh.

[Henry Schmidt]

Originally Posted by john walker's workshop

Just a personal trick, I remove that lower stud before mating the case halves and reinstall it later. Then you don't have to wiggle the right case half around until the stud aligns with the hole. Less chance of the chain and rods falling sideways, even with their supporting clips.

One caveat: as a rule, on mag cases, we always insert the four long stud holes around the front of the case during the case prep but if you skip this process you might find that the long intermediate bearing stud threads will often pull out when torqued.

[john walker's workshop]

Damn mag cases!

[Henry Schmidt]

Originally Posted by john walker's workshop

Damn mag cases!

They're just like your kids. They aren't all, star athletes, scholars or rock stars but they're still family.
You identify their flaws and do your best to mitigate future failures.

[john walker's workshop]

Good analogy.