New Head Gaskets

**ozscott** · 31st December 2016, 05:37 PM

My D2 is not overheating but not as cool as I would like and it has just started losing coolant. I like my D2. I reckon they are a great blend of on and offroader. So I'm going to do it properly. Assuming the deck of the block is nice and even I will go Cometic MLS gaskets with Vitron finish and ARP head studs. I will use Loctite 515 on upper manifold gaskets. I will use 3 Bond red silicon on the valley ends. I will use GM head stud sealant on the studs. I plan going to the upper range of the recommended torque for the ARP studs. New coil packs and leads. New convoluted tube over all the wires. I will extend breathers. I will replace radiator... I plan on keeping the truck...

So yet to get heads off but can now see leak from front of passenger side head and leak from rear I think.

Engine looks clean though.

Cheers

**Pedro_The_Swift** · 31st December 2016, 06:27 PM

I'm sure you already know my thoughts on most of that,,

Dont use normal plastic convoluted tubing, there must be a better option, on my green D2 after the long pull up Gibralture Range(which i reckon stuffed that 4L) the tubing was brittle as ****, one day good next day falling off,
It must be really only for water?

**Pedro_The_Swift** · 31st December 2016, 06:32 PM

Oh, and MLS gaskets need flat surfaces! So no metal scrapers!

**ozscott** · 31st December 2016, 07:19 PM

Pedro I am excited. I reckon this 4.6 is sweet. I think I know what has gone wrong but I will wait and see and post up tomorrow. It is attention to detail that make a good build up. I won't be gouging into the deck. Cheers

**ozscott** · 31st December 2016, 07:20 PM

I will have quite a parts list for Mario!

Cheers

**Pedro_The_Swift** · 31st December 2016, 07:30 PM

If given half an (hour)oportunity i would wrap the exhaust manifolds,,, infact all the way to the o2's....

**ozscott** · 31st December 2016, 07:34 PM

I like your thinking....you are an ideas man. Cheers

**ozscott** · 31st December 2016, 07:42 PM

Not everyone seems to like them wrapped....

http://www.centuryperformance.com/ex...o-not-use.html

Cheers

**Pedro_The_Swift** · 31st December 2016, 07:46 PM

From what i remember you may need some narrow stuff
Exhaust Manifold Downpipe Black Heat Wrap 1 x 15m | eBay

**Pedro_The_Swift** · 31st December 2016, 07:54 PM

I am going to assume those headers are lightweight pipe....
All i was after is underbonnet temps,, i doubt an RV8 would generate enough heat to melt cast iron?

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