• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

3.0 vulcan MLS head gaskets?


Aaron Powell

Member
Joined
Apr 11, 2020
Messages
46
Reaction score
6
Points
8
Location
California
Vehicle Year
1994
Make / Model
Mazda B3000
Transmission
Manual
I'm getting ready to pull the heads in my 94 3.0 vulcan and replace an exhaust valve and lap all the others. From what I can see, it has MLS head gaskets, but I can't find them for this year. Will they work off of another year 3.0? I understand MLS is more for aluminum to cast and aluminum to aluminum, but I'd prefer MLS if I can get them.
 


Rock Auto 5% Discount Code: 70D65189E6D8FF: January 5th, 2022

Aaron Powell

Member
Joined
Apr 11, 2020
Messages
46
Reaction score
6
Points
8
Location
California
Vehicle Year
1994
Make / Model
Mazda B3000
Transmission
Manual
I guess no one knows. I've been trying to compare them online, but to no avail am I finding one that seems to be a match. Google searches aren't turning anything up
 
Joined
Sep 13, 2020
Messages
118
Reaction score
17
Points
18
Location
Lagos, Nigeria
Vehicle Year
1998
Make / Model
Ford Ranger
Transmission
Automatic
Why not use the composite gasket types? Over here, if an engine has overheated severely, we don't use the MLG ones, but the composite type. This are my opinions though.
 

Aaron Powell

Member
Joined
Apr 11, 2020
Messages
46
Reaction score
6
Points
8
Location
California
Vehicle Year
1994
Make / Model
Mazda B3000
Transmission
Manual
Why not use the composite gasket types? Over here, if an engine has overheated severely, we don't use the MLG ones, but the composite type. This are my opinions though.
It's just a preference of mine if I have the option
 

Guanfy

Active Member
Joined
Jun 22, 2019
Messages
205
Reaction score
71
Points
28
Location
Crawfordville, Florida
Vehicle Year
1994
Make / Model
Mazda B3000
Engine Type
3.0 V6
Transmission
Manual
2WD / 4WD
2WD
Total Lift
Stock
Total Drop
Stock
Tire Size
15in
I haven't seen any floating around for the '94 3.0. My two cents would be to go composite with a nice set of Felpro. Without going down the rabbit hole composite gaskets are more tolerant of roughness so are more forgiving in sealing against a not mirror smooth surface. MLS are superior in sealing IF they are setup properly. They require very smooth mating surfaces. If you know all this and plan for it best of luck to you. I fixed some Subaru boxer motors of their head gasket issues doing exactly what you are trying to do now.
 
Joined
Sep 13, 2020
Messages
118
Reaction score
17
Points
18
Location
Lagos, Nigeria
Vehicle Year
1998
Make / Model
Ford Ranger
Transmission
Automatic
I haven't seen any floating around for the '94 3.0. My two cents would be to go composite with a nice set of Felpro. Without going down the rabbit hole composite gaskets are more tolerant of roughness so are more forgiving in sealing against a not mirror smooth surface. MLS are superior in sealing IF they are setup properly. They require very smooth mating surfaces. If you know all this and plan for it best of luck to you. I fixed some Subaru boxer motors of their head gasket issues doing exactly what you are trying to do now.
You're right with the composite suggestions too, but I hope the OP would even accept it, since he's still insisting on MLS type.
Hopefully, he'd get the one of his preferences.
 

Aaron Powell

Member
Joined
Apr 11, 2020
Messages
46
Reaction score
6
Points
8
Location
California
Vehicle Year
1994
Make / Model
Mazda B3000
Transmission
Manual
I've just decided to settle for the
Composite head gaskets
 

Dirtman

Former Middleweight Moss Fighting Champion
Supporting Member
Joined
May 28, 2018
Messages
19,340
Reaction score
13,286
Points
113
Location
41N 75W
Vehicle Year
2009
Engine Type
2.3 (4 Cylinder)
Transmission
Automatic
2WD / 4WD
2WD
Total Lift
It's up there.
Total Drop
It's down there.
Tire Size
Round.
My credo
I poop in the furnace.
WHAT!?! WHY!?!
 

Ranger850

Well-Known Member
Supporting Member
TRS 20th Anniversary
Joined
Jan 24, 2018
Messages
5,967
Reaction score
2,104
Points
113
Location
Tallahassee Florida
Vehicle Year
2001
Make / Model
Ford
Engine Size
Born with a 3.0, looking for a donor V8
Transmission
Manual
2WD / 4WD
2WD
Total Lift
Stock 2"
Tire Size
Stock
My credo
Doing things wrong, until I get it right.

Dirtman

Former Middleweight Moss Fighting Champion
Supporting Member
Joined
May 28, 2018
Messages
19,340
Reaction score
13,286
Points
113
Location
41N 75W
Vehicle Year
2009
Engine Type
2.3 (4 Cylinder)
Transmission
Automatic
2WD / 4WD
2WD
Total Lift
It's up there.
Total Drop
It's down there.
Tire Size
Round.
My credo
I poop in the furnace.
That makes me a sad panda...

source (6).gif
 

RonD

Well-Known Member
Joined
Jun 2, 2012
Messages
20,415
Reaction score
4,100
Points
113
Location
canada
Vehicle Year
1994
Make / Model
Ford
Transmission
Manual
No need to use MLS(multi-layer-steel) head gasket on the 3.0l Vulcan, use composite gaskets

When car makers, or racers, started using aluminum heads on cast iron blocks the head gasket would fail after 20k-50k miles, even faster on racing engines with high ratios

Problem was the expansion rate of cast iron vs aluminum
Aluminum expands faster and 5 to 7 times more when heated than cast iron
So each time an engine was warmed up the composite head gasket was RUBBED as the aluminum expanded faster
So after enough drive cycles, warm up/cool down, the head gasket would rub thru and fail

MLS was used so aluminum head could SLIDE on the head gasket as it expanded, instead of RUB
But there was a problem with straight MLS gaskets, cooling system could leak in colder climates as aluminum shrunk down even more, lol, so not uncommon to have a COLD coolant leak between head and block
So MLS now has a bit of composite material

3.0l has cast iron head and block so use composite

MLS is not a "better" gasket, its a specific use gasket
If you have aluminum heads then use MLS regardless if block is cast iron or aluminum, because the head still expands faster and more than the block
 


Top