Oil Analysis Report. Coolant in Oil!

[bdenglund]

Called Clearwater today. The head is on its way. Any suggestions on new head bolts and a new gaskets. I like the felpro brand but they have 3 diffrent options. I figure I'll just go with their SD gasket.

MD - I thought about going and getting one from the salvage yard but figure to just get a new one and not worr about cracking heads in the future. It seems like they are all prone to cracking.

[Talyn]

Go with the MLS gasket. Go with any of the standard head bolts. They are all about the same quality. Unless you want ARP.

[md21722]

I use the standard Fel Pro head gasket 9076PT1 (IIRC) and head bolt set. I am not sure there is any benefit to the more expensive options for a stock 4.0.

[cal]

The MLS gasket is stronger, and compresses just a little bit thinner giving you better quench. Should be about the same price.

I run stock head bolts too.

[md21722]

MLS is about 50-100% more than the standard gasket. I think you can use any of them and be fine but the MLS may be more sensitive to surface imperfections than the normal gaskets? I haven't had to take a standard Fel Pro gasket off because it failed. Last one was at 150,000 when the head cracked.

[Digger87xj]

Those are not stock pistons and are indeed .040" over.

[Digger87xj]

And to add... they are Federal Mogul/Sealed Power cast pistons.

[bdenglund]

Thanks Digger! I was wondering why they would have .040 stamped on them. I guess a standard MLS gasket would still work with the bored out block.

Bdenglund

[Pop Alexandra]

Thanks for sharing your results. I'm seeing fairly similar results with a tdl analyzer.

[pablos]

It looks like there might be some aluminum from the piston on that cylinder, there will be evidence on the piston when you pull it to hone, if so. My 1999 had a chunk of it that broke off the #1 piston and fused to the wall. You could hear the piston hitting it from a block away, and the wrist pin bore was ovaled out 1/4". We chiseled it off and used a ball hone on all 6 cylinders, a pair of pistons and a set of rings and it's been fine for over 52k. 10W30 Mobil1 and a Napa Gold filter every 5k, no oil use between changes.