90 degree adapter leak

[A body Jim]

Finishing up my first project, 360 commando into my 1969 dart and can’t stop oil Leah at the bolt head. Tried various gasket kits from almost everyone who sells them, including a new bolt as well. Tharen the adapter of and even filed the surface the bolt tightened to and still leaks.I don’t see any evidence of the housing being cracked. Am I missing something to mounting the adapter?

 

[RustyRatRod]

There's a particular way those gaskets go on. I cannot remember what it is. @toolmanmike has posted a diagram several times maybe he will chime in. I know if they aren't in the right place, it'll leak like a ***** on payday.

 

[Professor Fate]

A 360...Commando?
Do you possibly mean Magnum?
If it is a Magnum block, I don't believe the early 90* adapters will seal due to different machining in the filter boss.

 

[RustyRatRod]

A 360...Commando?
Do you possibly mean Magnum?
If it is a Magnum block, I don't believe the early 90* adapters will seal due to different machining in the filter boss.

That's right. Magnum and LA are not the same there. I bet that's what it is.

 

[junkyardhero]

A 360...Commando?
Do you possibly mean Magnum?
If it is a Magnum block, I don't believe the early 90* adapters will seal due to different machining in the filter boss.

they'll seal up on a magnum.

unless there's a difference on the early 90* adapters that is not present on the later 90* units.
(besides the angle of the dangle IRT the filter)

 

[RustyRatRod]

they'll seal up on a magnum.

unless there's a difference on the early 90* adapters that is not present on the later 90* units.
(besides the angle of the dangle IRT the filter)

They are different somehow. @4spdragtop knows all about it.

 

[4spdragtop]

They are different somehow. @4spdragtop knows all about it.

 

[4spdragtop]

Order of assembly

 

[junkyardhero]

They are different somehow. @4spdragtop knows all about it.

Thanks Rob, youre right, you can't mix n match an LA block and Magnum filter plate or vice versa. I installed a magnum plate on my 340....Exxon Valdez...thankfully it was still on stand.

filter plate correct, does differ from LA to magnum.

but we're talking about 90* adapter which, again, to my knowledge there's no difference betwixt the early and late units, or MP units, except for the angle of the oil filter (one kicks straight, one has more of an angle) and naturally the difference of bolts; however we've covered that topic in a previous episode.

the 90* mounts to a magnum no problems

 

[Professor Fate]

The 90* adapter base mimics the filter plate in mounting depths of the center boss and outer gasket surfaces, the LA and Magnum plates are different for a reason- due to the differences in the ways the Magnum and LA are machined at the filter. I got a 90 to seal on a Magnum by cutting my own gaskets of different thicknesses (thinner inner gasket and way thicker outer, IIRC, and lots of goop) to make up for the discrepancy, but it didn't last long, maybe 500 miles if I was lucky. I ended up throwing the stock plate back on it and ran a shorty filter...
To my knowledge all the 90* adapters are the same, inasmuch as they are for LAs- I don't believe there were any specifically made for the Magnums.

 

[A body Jim]

There's a particular way those gaskets go on. I cannot remember what it is. @toolmanmike has posted a diagram several times maybe he will chime in. I know if they aren't in the right place, it'll leak like a ***** on payday.

Ok I’ll keep an eye out.

 

[A body Jim]

A 360...Commando?
Do you possibly mean Magnum?
If it is a Magnum block, I don't believe the early 90* adapters will seal due to different machining in the filter boss.

Engine was bought in 93 from year one, have the paper work when purchased. Now I can only guess it’s a LA engine cus it the spec sheet didn’t come with and did find searching the web everything points to a 360/360 and purchase paperwork shows that.

 

[A body Jim]

Engine was bought in 93 from year one, have the paper work when purchased. Now I can only guess it’s a LA engine cus it the spec sheet didn’t come with and did find searching the web everything points to a 360/360 and purchase paperwork shows that.

The adapter was on the engine when started b4 I bought it. Long story with that.

 

[A body Jim]

filter plate correct, does differ from LA to magnum.

but we're talking about 90* adapter which, again, to my knowledge there's no difference betwixt the early and late units, or MP units, except for the angle of the oil filter (one kicks straight, one has more of an angle) and naturally the difference of bolts; however we've covered that topic in a previous episode.

the 90* mounts to a magnum no problems

Good information, thanks! With this now trying to learn, I have bought gasket kits that either use I cork gasket or nylon for the inner bolt seal. Does that seal between the base where the bolt threads to the inside of adapter? I have used both and still seeping at the bolt, base gasket has been ok.

 

[A body Jim]

Engine was bought in 93 from year one, have the paper work when purchased. Now I can only guess it’s a LA engine cus it the spec sheet didn’t come with and did find searching the web everything points to a 360/360 and purchase paperwork shows that.

Cam, crane 1.5 roller rockers and M1 hi rise intake definitely matched info found.‍

 

[A body Jim]

Good information, thanks! With this now trying to learn, I have bought gasket kits that either use I cork gasket or nylon for the inner bolt seal. Does that seal between the base where the bolt threads to the inside of adapter? I have used both and still seeping at the bolt, base gasket has been ok.

Hmmm,,,, the filter is straight back without any angle?

 

[A body Jim]

So straight back with out even a slight angle?

 

[junkyardhero]

post #8 shows the sequence. if you have a nylon or fiber washer for the bolt head adios that and get a good copper one to go under the head, and anneal it so it'll seal up tight.

the bolt torques up to 40 ft/lb

 

[junkyardhero]

Hmmm,,,, the filter is straight back without any angle?

So straight back with out even a slight angle?

there is a *slight* variance on early and late filter adapters, this only applies to the angle of the filter and is inconsequential for your purposes. the angle is there to provide clearance on the early cars due to the narrower body.

 

[4spdragtop]

Well the op can't even acknowledge what I've contributed here, so f em. 5 years here and 13 posts, he doesn't contribute squat so good luck.

filter plate correct, does differ from LA to magnum.

but we're talking about 90* adapter which, again, to my knowledge there's no difference betwixt the early and late units, or MP units, except for the angle of the oil filter (one kicks straight, one has more of an angle) and naturally the difference of bolts; however we've covered that topic in a previous episode.

the 90* mounts to a magnum no problems

 

[A body Jim]

I plan on addressing the issue tomorrow, but with the input from everyone in regards to the filter angle has my attention. Thank you, it’s new to me.

 

[340six]

post #8 shows the sequence. if you have a nylon or fiber washer for the bolt head adios that and get a good copper one to go under the head, and anneal it so it'll seal up tight.

the bolt torques up to 40 ft/lb

A part number for the copper washers. I wanted to buy some to have on hand here.
Thanks

 

[junkyardhero]

I plan on addressing the issue tomorrow, but with the input from everyone in regards to the filter angle has my attention. Thank you, it’s new to me.

the angle is of no issue for your application.

here's a post that has the info.

You can........

Learn something new maybe every day if you pay attention. I'm 65 years old and have been turning wrenches on my Mopars for 49 years now. I have seen and done quite a bit with my cars in that time too. That being said, I learned something new a few weeks ago from a member here who is probably...

www.forabodiesonly.com

i'm fairly certain that your issue is either the crush washer for the bolt head is crap, it's not torqued enough, or the bolt itself is bad (which i just had happen).

 

[junkyardhero]

A part number for the copper washers. I wanted to buy some to have on hand here.
Thanks

the *only* kits i buy now have the copper washer, and i still anneal them.

if you're looking for loosie ones, i've used motorcycle drain plug washers in a pinch.

30mm OD, 20mm ID, 1.5mm thick

 

[Professor Fate]

Engine was bought in 93 from year one, have the paper work when purchased. Now I can only guess it’s a LA engine cus it the spec sheet didn’t come with and did find searching the web everything points to a 360/360 and purchase paperwork shows that.

Okay, a Mopar crate engine. Makes more sense now. They came in both flavors over the years, LA and Magnum based. If you've got 5 bolt valve covers and shaft mount rockers, it's an LA. 10 bolt valve covers and stud mount rockers, it's a Magnum. Sounds like you've got the LA.
The adapter should seal, but the surfaces need to be squeaky clean and I'd do JYH's suggestion and use the copper washer.