New MLS Head Gaskets

[AzCoupe]

As you know, I've been talking with Cometic about producing a Multi-Layered Steel head gasket for us. The minimum thickness is .027 and the maximum is .140, and I can do any size within that range, as long as I order a minimum of 40 in that size. The combined minimum order is 150 gaskets, which means I can order four different sizes if I order 160 total. Therefore I was thinking .027, .038, .050, and .065 would be the best thicknesses to start with. Or I'd may add a couple more (.075 and .086) for those who need to lower their C/Rs, for boosted applications or if their heads have beem milled to the max.

Once the MLS gaskets are done, they can follow up with the development of a gas filled O-ring, which is used with the MLS gasket for high boost applications. This prevents the need for leaky copper head gaskets and o-ringing of the block, which is expensive and requires a full engine tear down.

They said they should be ready in six to eight weeks, which would be around mid to late Feb. Based on a rough quote for a mimimum order of 150 gaskets, they suggested a retail price of $168 bucks (I should have a firm price by the end of next week). If your interested in getting one of these, check the size you need above, so I have an idea of what sizes and quantities to order.

For more info on the Phusion gaskets, click the link below.
http://www.cometic.com/phuzion.aspx

 

[Does10s]

I'll take 4 of the .086" thick ones!

I need 2 of them tomorrow.
Will

 

[wsa111]

Mike, i am glad to see the majority favor the .038 head gasket.

I for one have zero decked the block & that gasket would be enough to keep the piston from contacting the head & still provide a perfect quench demension.

I hope they can solve the weeping of coolant from the left side of the block.

So far the victor seems to seal that area even better than the felpro & the felpro even has a perma-seal around the coolant passages. Bill

 

[blueroo]

Somewhat off subject, but are the head gaskets capable of weeping oil on the left side of the block? I ask because for some reason I have a lot of oil on that side of the block but no coolant

 

[AzCoupe]

When you say the left side, are you refering to the fuel pump & distributor side, or the exhaust/intake side? Just want to be sure we're on the same track.

 

[80Stang]

I vote primarily for .038 and secondarily for .027.

While building my engine (with cast pistons) I'd aim parking the pistons .010 over the deck and use the .038 gasket. If the decking at the shop falls a little short (as it usually does, on the safe side) and it is only zeroed then I could throw in the .027...with forged pistons I'd make the deck height over .030 anyways...

.027 would be good for those who don't want to deck the block.

 

[blueroo]

Fuel pump and dizzy side, I'm worried I might have a blown headgasket

 

[Patrick66]

there are plenty of head gaskets made that are about 0.050, so i vote for a thin one for higher compression (NA applications) and a thick one (boosted). if someone needs a gasket in the middle they can go to advance and get a felpro gasket (0.055) really easy.

 

[65coupei6]

Fuel pump and dizzy side, I'm worried I might have a blown headgasket

My engine also leaks from that side. From what I have seen and heard from most old time mechanics is that the 200's always did for some reason.

I vote for .038, .065, .050

 

[250mav]

just out of curosity how much power gain would i have to look foward to if i did nothing else but bump my compression up using a thinner head gasket?

what would the stock thickness be anyway?

 

[buzzA4]

I know this all off subject, but...

Those left side oil leaks...check the gasket and re-torque the fuel pump.

 

[xctasy]

Its not a major problem...the right side actually leaks more, but since the water jackets and exhast and log manifold cover everything, you never, ever see that!


1.The rocker cover gasket slopes to the left,
2.and the oil filler oil always drips there,
3.and the vent tube used to be there,
4.and the iron head and exhast pipe make sure any leaking oil is vapourised.
5. The dip stick is there
6. The fuel line is there
7. The oil filter is there
8. The distributor is there

Basically, anytime you look at a 144 to 250 I6, all you see is about 18 to 20 inches of painted metal with a Pablo Picasso oil painting on it. It's not leak prone.

The real leak is at the back of the block, and that's the only issue.

Incidently, about the time Ford Australia bolted on the Cross flow head, they re-routed the water and oil lines, added about 0.5 inch of metal, and on EFI engines, it looks like it still leaks oil.

 

[ASMART]

Mike, it is great that your giving every one options on this. Like a previous post, I would order less of the thickness that is readily available. I am guessing that most people that need agasket at common thickness will not be pressurizing so you will have less demand for that size.

What are the commonly available sizes? I won't need one for a year or 2 so my vote probably isn't worth much.

 

[Anonymous]

Will they fit the alloy head Aussie crossflow blocks? From memory our blocks are wider and we have the two dowels?

If they fit the Aussie donk and you can ship them to Australia I will be keen for a couple of them in the 0.038" thickness.

 

[AzCoupe]

Will they fit the alloy head Aussie crossflow blocks? From memory our blocks are wider and we have the two dowels?

If they fit the Aussie donk and you can ship them to Australia I will be keen for a couple of them in the 0.038" thickness.

Nope, only pre-crossflow

 

[350kmileford]

Any follow up with these? Have they been ordered?

 

[AzCoupe]

Not yet, but soon. I had to pay for the intake manifolds first.