The Ford Barn

Dad Was A Racer · 02-08-2018, 09:45 PM

Assembling my 8BA further tonight and finally getting to install the oil pan. Following the instructions in one of my "how to build the world's most awesome flathead" books, I put Gasgasinch on both sides of the gasket surface and torqued the nuts (I'm using studs and acorn nuts) to 18 lb.ft.

On about half of the bolt holes, the gasket has obviously torn in half and pushed out the side of the pan.

What gives? Is the torque too much (seems like a lot for an oil pan to me) or the Gasgasinch making the gasket mushy causing it to fall apart, or????

flatjack9 · 02-08-2018, 09:52 PM

That does sound like a lot. I just snug them up in an even pattern from the center to the outer edge. I also do not use any sealant or adhesive. Never had a leaking problem.

Brian · 02-08-2018, 10:20 PM

Cork gaskets? I prefer thick paper gaskets like those supplied by Best

Drbrown · 02-08-2018, 10:37 PM

Instead of a gasket some use 1/8" to 3/16" diameter continuous bead of RTV sealer along inside of fasteners, totally encircling fastener holes with sealant. Cure sealant per manufacturers instructions.

If you drop the pan again, which i recommend, re-clean mating flange and check flatness of mating flange on a machined surface to be sure you have not distorted it by over-tightening. Use a wood block and non-metallic hammer to reform.

Don't have a spec book for you but torque MAY vary pending spacing of fasteners BUT typical is 10 ft lbs or 15 N~m. Using 15 ft lbs could explain gasket damage.

Let us know how this goes.

40cpe · 02-08-2018, 10:42 PM

Van Pelts's site says 15-18#. Pulling up a torque chart online shows 18# for grade 8 bolts. I'm with DrBrown, check for pan distortion at the bolt holes. Overtightened bolts will make the pain rail "pucker" at the holes and that will force the gasket apart.

cas3 · 02-08-2018, 10:49 PM

Sponsored Links (Register now to hide all advertisements)

gasgawho? never heard of it !

Dad Was A Racer · 02-08-2018, 11:03 PM

Quote:

Originally Posted by cas3

gasgawho? never heard of it !

http://gasgacinch.com

Drbrown · 02-08-2018, 11:47 PM

If Vanpelt says 15-18 ft lbs, he must be basing that on use of a gasket, not a sealant. Then the question would be what kind of gasket material ? The gasket material would need to suitable for the spacing of fasteners.

I know it depends on bolt diameter but Grade 8 bolts on an oil pan? At only 15 ft lbs ?Could be Grade 2, 5 or 7. Don't know.

All this takes me back to the "gasgacinch" gasket sealant question. What kind of material is it and does the gasket manufacturer approve it, and for coating both sides ? I'd dig-in and ask a tech there about using it and how for the specific gasket.

Dad Was A Racer · 02-09-2018, 12:29 AM

FWIW, I got these instructions verbatim from Mike Herman's book.

02-08-2018, 09:45 PM	#1
Dad Was A Racer Junior Member Join Date: Jan 2018 Location: Bryan, Texas Posts: 11	Oilpan gasket and torque? Assembling my 8BA further tonight and finally getting to install the oil pan. Following the instructions in one of my "how to build the world's most awesome flathead" books, I put Gasgasinch on both sides of the gasket surface and torqued the nuts (I'm using studs and acorn nuts) to 18 lb.ft. On about half of the bolt holes, the gasket has obviously torn in half and pushed out the side of the pan. What gives? Is the torque too much (seems like a lot for an oil pan to me) or the Gasgasinch making the gasket mushy causing it to fall apart, or????

02-08-2018, 09:52 PM	#2
flatjack9 Senior Member Join Date: May 2010 Location: Oshkosh, Wi Posts: 4,527	Re: Oilpan gasket and torque? That does sound like a lot. I just snug them up in an even pattern from the center to the outer edge. I also do not use any sealant or adhesive. Never had a leaking problem.

02-08-2018, 10:20 PM	#3
Brian Senior Member Join Date: May 2010 Location: Masterton, New Zealand Posts: 3,836	Re: Oilpan gasket and torque? Cork gaskets? I prefer thick paper gaskets like those supplied by Best __________________ Unfortunately, two half wits don't make a whole wit!

02-08-2018, 10:37 PM	#4
Drbrown Senior Member Join Date: Oct 2013 Location: Glens Falls NY Posts: 1,267	Re: Oilpan gasket and torque? Instead of a gasket some use 1/8" to 3/16" diameter continuous bead of RTV sealer along inside of fasteners, totally encircling fastener holes with sealant. Cure sealant per manufacturers instructions. If you drop the pan again, which i recommend, re-clean mating flange and check flatness of mating flange on a machined surface to be sure you have not distorted it by over-tightening. Use a wood block and non-metallic hammer to reform. Don't have a spec book for you but torque MAY vary pending spacing of fasteners BUT typical is 10 ft lbs or 15 N~m. Using 15 ft lbs could explain gasket damage. Let us know how this goes.

02-08-2018, 10:42 PM	#5
40cpe Senior Member Join Date: May 2010 Location: Star, MS Posts: 4,024	Re: Oilpan gasket and torque? Van Pelts's site says 15-18#. Pulling up a torque chart online shows 18# for grade 8 bolts. I'm with DrBrown, check for pan distortion at the bolt holes. Overtightened bolts will make the pain rail "pucker" at the holes and that will force the gasket apart.

02-08-2018, 10:49 PM	#6
cas3 Senior Member Join Date: Jan 2011 Location: sw minnesota Posts: 4,578	Re: Oilpan gasket and torque? Sponsored Links (Register now to hide all advertisements) gasgawho? never heard of it !

02-08-2018, 11:47 PM	#8
Drbrown Senior Member Join Date: Oct 2013 Location: Glens Falls NY Posts: 1,267	Re: Oilpan gasket and torque? If Vanpelt says 15-18 ft lbs, he must be basing that on use of a gasket, not a sealant. Then the question would be what kind of gasket material ? The gasket material would need to suitable for the spacing of fasteners. I know it depends on bolt diameter but Grade 8 bolts on an oil pan? At only 15 ft lbs ?Could be Grade 2, 5 or 7. Don't know. All this takes me back to the "gasgacinch" gasket sealant question. What kind of material is it and does the gasket manufacturer approve it, and for coating both sides ? I'd dig-in and ask a tech there about using it and how for the specific gasket.

02-09-2018, 12:29 AM	#9
Dad Was A Racer Junior Member Join Date: Jan 2018 Location: Bryan, Texas Posts: 11	Re: Oilpan gasket and torque? FWIW, I got these instructions verbatim from Mike Herman's book.