Moroso SBC Oil Pan missing a bolt hole!?
05-12-2017, 11:23 PM
#1
Pro
Thread Starter
Moroso SBC Oil Pan missing a bolt hole!?
Picked up a Moroso 20206 pan for my SBC and it's missing a bolt hole on the rear passenger side of the pan.. Wouldn't have even realized it but I had an extra bolt from the ARP SBC oil pan kit and I was kornfused by that.
Anyone know if this is by design for some reason, or is this just a mfg oversight?? Seems to me like this is gonna be guaranteed leak point without that bolt... Maybe I will be ok if I put RTV in that area but that gamble sucks.... Leaks suck....
Thanks for any input you have...
Anyone know if this is by design for some reason, or is this just a mfg oversight?? Seems to me like this is gonna be guaranteed leak point without that bolt... Maybe I will be ok if I put RTV in that area but that gamble sucks.... Leaks suck....
Thanks for any input you have...
Last edited by gbarmore; 05-12-2017 at 11:46 PM.
05-12-2017, 11:34 PM
#3
Pro
Thread Starter
Agreed, I put it on the motor and it would be a real tight fit given the way it was mfg'd. However, if the hole were punched in toward the crank like the others it might work just fine. Unfortunately I will not be able to do that in my 'shop'. Question is, if I leave this is it gonna leak without that bolt? just a guess, but prolly... My original POS crate motor oil pan (with the trap door that didn't close past 1/2" open) had a bolt hole there. Directions say nothing about this and are otherwise pretty dang thorough....
Last edited by gbarmore; 05-12-2017 at 11:37 PM.
05-13-2017, 06:33 AM
#4
Moroso redesigned some pans recently, the reason for eliminating that particular hole was to be able to use up to 4.000" stroker crank with that pan.
The part number you have is one of these "modified" pans, it's counterpart, the 20201 has the same number of holes.
Thanks, Gary in N.Y.
P.S. Assuming you're using some type of 1-pc pan gasket if you want an effective seal, place a thin layer of "The Right Stuff" around the entire pan rail surface on the block/ends, lay the gasket in place, snug the pan down by hand (do not fully tighten it yet). Let it "set" for a few hours, remove the pan, put another coat of sealer, this time on the gasket then install the pan. Using this method we've never had a single drip of oil anywhere from the pans.
The part number you have is one of these "modified" pans, it's counterpart, the 20201 has the same number of holes.
Thanks, Gary in N.Y.
P.S. Assuming you're using some type of 1-pc pan gasket if you want an effective seal, place a thin layer of "The Right Stuff" around the entire pan rail surface on the block/ends, lay the gasket in place, snug the pan down by hand (do not fully tighten it yet). Let it "set" for a few hours, remove the pan, put another coat of sealer, this time on the gasket then install the pan. Using this method we've never had a single drip of oil anywhere from the pans.
05-13-2017, 09:37 AM
#5
Pro
Thread Starter
Moroso redesigned some pans recently, the reason for eliminating that particular hole was to be able to use up to 4.000" stroker crank with that pan.
The part number you have is one of these "modified" pans, it's counterpart, the 20201 has the same number of holes.
Thanks, Gary in N.Y.
P.S. Assuming you're using some type of 1-pc pan gasket if you want an effective seal, place a thin layer of "The Right Stuff" around the entire pan rail surface on the block/ends, lay the gasket in place, snug the pan down by hand (do not fully tighten it yet). Let it "set" for a few hours, remove the pan, put another coat of sealer, this time on the gasket then install the pan. Using this method we've never had a single drip of oil anywhere from the pans.
The part number you have is one of these "modified" pans, it's counterpart, the 20201 has the same number of holes.
Thanks, Gary in N.Y.
P.S. Assuming you're using some type of 1-pc pan gasket if you want an effective seal, place a thin layer of "The Right Stuff" around the entire pan rail surface on the block/ends, lay the gasket in place, snug the pan down by hand (do not fully tighten it yet). Let it "set" for a few hours, remove the pan, put another coat of sealer, this time on the gasket then install the pan. Using this method we've never had a single drip of oil anywhere from the pans.
Greg
05-13-2017, 04:07 PM
#6
Pro
Thread Starter
Moroso redesigned some pans recently, the reason for eliminating that particular hole was to be able to use up to 4.000" stroker crank with that pan.
The part number you have is one of these "modified" pans, it's counterpart, the 20201 has the same number of holes.
Thanks, Gary in N.Y.
P.S. Assuming you're using some type of 1-pc pan gasket if you want an effective seal, place a thin layer of "The Right Stuff" around the entire pan rail surface on the block/ends, lay the gasket in place, snug the pan down by hand (do not fully tighten it yet). Let it "set" for a few hours, remove the pan, put another coat of sealer, this time on the gasket then install the pan. Using this method we've never had a single drip of oil anywhere from the pans.
The part number you have is one of these "modified" pans, it's counterpart, the 20201 has the same number of holes.
Thanks, Gary in N.Y.
P.S. Assuming you're using some type of 1-pc pan gasket if you want an effective seal, place a thin layer of "The Right Stuff" around the entire pan rail surface on the block/ends, lay the gasket in place, snug the pan down by hand (do not fully tighten it yet). Let it "set" for a few hours, remove the pan, put another coat of sealer, this time on the gasket then install the pan. Using this method we've never had a single drip of oil anywhere from the pans.
05-14-2017, 07:47 PM
#7
Team Owner
If you use a sealant, I suggest that you install the pan, install bolts just mildly snug; then let it set overnight for sealant to harden up. After that, tighten bolts to final spec.
If you tighten the bolts with gooey sealant applied, the joint will just squeeze out most of the sealant. Also, the sealant will act as a lubricant and bolts will be over-rotated...essentially over-torquing the bolts.
If you tighten the bolts with gooey sealant applied, the joint will just squeeze out most of the sealant. Also, the sealant will act as a lubricant and bolts will be over-rotated...essentially over-torquing the bolts.
05-15-2017, 08:23 AM
#8
Pro
Thread Starter
If you use a sealant, I suggest that you install the pan, install bolts just mildly snug; then let it set overnight for sealant to harden up. After that, tighten bolts to final spec.
If you tighten the bolts with gooey sealant applied, the joint will just squeeze out most of the sealant. Also, the sealant will act as a lubricant and bolts will be over-rotated...essentially over-torquing the bolts.
If you tighten the bolts with gooey sealant applied, the joint will just squeeze out most of the sealant. Also, the sealant will act as a lubricant and bolts will be over-rotated...essentially over-torquing the bolts.