New wiseco head gasket leaks - Help!

[Nessism]

Ed,
Jay did not answer and neither did Schnitz any question related to the Weisco head gasket and
Ed, It really defies comprehension what you are contributing to this thread(other than being argumentative). If you want to contribute please persuade Big Jay or anybodyelse that sells these kits to offer some recommendations on preparation to the layman.

As best I can tell (And I'm a smart guy according to Ed) if you order a Weisco Big block kit you are well advised to dump the MLS gasket.

I know Terry has been successful with it the MLS after having similar problems but he is an NHRA title holder and I don't put myself in that class.

Pos

I bought an Athena GS1000G gasket kit for my GS1000S, because it came with a MLS head gasket. I didn't want the old style composite gasket. Of course this is an Athena gasket and not a Weisco gasket but personally, I have no reason to distrust MLS.

Regarding your engine, did you measure the surface flatness of the head and cylinder block? Did you lay it flat on top of a granite surface plate and look for daylight between the head/cylinder and block? Did you have your head and block surfaced to make sure it's flat?

Again I say, MLS gaskets require a flat head and cylinder. I don't know what "flat" means in actual measurements but my estimation is less than .003" out.

Regarding my not contributing to this thread, since when did it become your thread dedicated to weisco head gaskets? Oh, never mind...

[posplayr]

I assembled with wiseco pistons and gaskets. The gasket is a multi layer with no o'rings etc. Assembled and torqued everything carefully (obviously not careful enough) Started the motor, and almost right away had oil leaking badly along front of cylinder.

Ed above is the topic of the thread; What to do about a leaking 1166 kit MLS gasket from Wiesco.

Given my horiffic experience with it and the total lack of dealer support I would ditch the Weisco MLS stainless steel gasket pronto.

[Nessism]

Ed above is the topic of the thread; What to do about a leaking 1166 kit MLS gasket from Wiesco.

Given my horiffic experience with it and the total lack of dealer support I would ditch the Weisco MLS stainless steel gasket pronto.

My bad on that point. I apologize. This thread IS about weisco MLS head gaskets.

BTW, the way that MLS gasket is sticking up in that photo you posted, looks like a POS part.

[posplayr]

Ed,
BTW my cylinders were bored and checked by the same shop that decked the head. The MLS leaked first time and even after three more retorques at 5 ft-lbs increments.

The composite gasket (with copper coat) sealed the first time with out a drop.

What does that say?

Jim

[almarconi]

Hey guys..if your going to argue at least spell the name correctly its

Wiseco NOT Wiesco

[Nessism]

Ed,
BTW my cylinders were bored and checked by the same shop that decked the head. The MLS leaked first time and even after three more retorques at 5 ft-lbs increments.

The composite gasket (with copper coat) sealed the first time with out a drop.

What does that say?

Jim

That says that the Wiesco MLS head gasket on your bike leaked. I can't explain why but I do not believe that MLS gaskets are a bad in general.

[posplayr]

That says that the Wiesco MLS head gasket on your bike leaked. I can't explain why but I do not believe that MLS gaskets are a bad in general.

Ed what it means is that it has nothing to do with the surface preparation achieved by the machine shop. There are only two alternative s left, either the MLS is garbage or the MLS cant be installed by a reasonably competent pair of bimbos.

Who are these guys?

[almarconi]

Who are these guys?

Well..who are they ?? Don't keep us in suspense..

[chef1366]

Dang Jim, you look like James Coburn in that pic!
Stay away from the TNT!

[almarconi]

Well I guess we know who the guy is on the right. Who's the guy on the
left??

[chef1366]

It's the sidekick bimbo that helped with the oil spitting 1166 big bore job.
That gasket was a POS!

[almarconi]

So I take it the other bimbo is Chef

[49er]

Geez, I got into this thread too deeply before it deteriorated so much. I began to wish I hadn't started with it.

IMO, if you can't accurately measure the trueness of ALL your mating surfaces yourself when doing a top end rebuild, go with composite head gaskets. They are far more forgiving of warppage, distortion and damaged or poorly cleaned surfaces.

If you are leaning towards using MLS head gaskets, you need to be aware that your oil supply passages won't have a rubber sealing ring around them. The gasket alone will need to do the sealing task. Also, the cam chain tunnel o ring will be be causing greater resistance to compression due to the MLS gasket completely covering the o ring sealing area.

The OEM and Vesrah composites don't cover the o ring area, so the o ring doesn't get exposed to as much sealing pressure as it will when a MLS gasket is fitted.

I'm not sure whether this is good or bad. Some will say that the o ring may cause less sealing pressure around the #2 & #3 cylinder areas, which may be bad. Fortunately, there is plenty of room for the o ring to expand in the machined groove on the 850, so I'm going to give it a try. I doubt that any oil will find it's way past that o ring/gasket combination.

My surfaces are now quite true, so it will be a good test.

[Nessism]

The Athena MLS head gaskets don't use a cam tunnel O-ring. I thought about installing one but thought better of it because of all the compression that would be needed. Fingers crossed...

[posplayr]

IMO, if you can't accurately measure the trueness of ALL your mating surfaces yourself when doing a top end rebuild, go with composite head gaskets. They are far more forgiving of warppage, distortion and damaged or poorly cleaned surfaces.

.

The $64 question "What is good enough to use MLS?

My head was surfaces and the cylinder tested true. What that meass I dont know which is what I was trying to figure out. I tend to agree with your assessment, as it makes sense and I had it driven home by the experience.

MLS gaskest are for exceptional surfaces. An Ed, while the Suzuki OEM gaskets are muti-layered, they are not MLS. MLS are stainless.