Never ending head gaskets

[firstgenlover666]

Helppppp!!!! So I’ve replaced two sets of head gaskets on my deuce. The first set blew between the cylinders so it was swapping compression from side to side. The next set pushed the head gasket on the rear head completely out. I used some copper high tach on it. Maybe I should of done it dry. I had both heads machined. The next gasket just blew out of the rear head. Oil and coolant everywhere. So what’s the best place to get good head gaskets. I just purchased a three foot machinist flat edge. I really don’t want to have to disassemble the whole motor to have the block decked. I’ve bypassed the fuel density regulator and use this truck on the farm hauling hay manure and gravel. The multi fuel starts and runs so good. But it just eats head gaskets. Any help would be appreciated. Thanks.

 

[NDT]

Tell us about your torquing and re-torquing process. Do you have the special Snap On tool to torque the obstructed nuts?

 

[doghead]

Since bypassing the FDC, have you checked your boost pressure or exhaust temps? I suspect you are overboosting and need to reduce your max fuel rate.

 

[doghead]

Also, which style head gaskets are you using?

Did this start happening right after you bypassed the fdc?

 

[firstgenlover666]

So I followed the torque specs I found on the technical manual section two years ago. To get the nuts that are on the left side of the head I welded a socket on to a cut down 12 point wrench so I could torque them down. And yes I thought about to much boost being an issue. I mean it might put out ten psi now . It has no boost or egt gauge. I always let it warm up and cool down. The head gasket kits came from eBay and they included new style head gaskets. They were oem military kits. I can turn it back down but I kinda like going down the road hauling 6 ton of gravel and going 55 mph. I’ve named the old girl rolling thunder. . It dosnt pop the gaskets when I’m working it. Just normal driving. So maybe I need better parts. Or a lighter foot. .

 

[doghead]

Go spend $40-50 and get your self a cheap boost gauge. If you see over 12-14 psi under a load, back off the fuel or keep changing head gaskets. I prefer a copper tube line for the boost gauge.

 

[firstgenlover666]

Also, which style head gaskets are you using?

Did this start happening right after you bypassed the fdc?

So any advice in where to get the best head gaskets. Does anyone make a new gasket any more for these motors

 

[firstgenlover666]

Go spend $40-50 and get your self a cheap boost gauge. If you see over 12-14 psi under a load, back off the fuel or keep changing head gaskets. I prefer a copper tube line for the boost gauge.

I can put a boost gauge on it. That’s no big deal. And yes I’m sick of changing head gaskets . Any advice on who sells the best head gaskets. Thanks

 

[doghead]

So any advice in where to get the best head gaskets. Does anyone make a new gasket any more for these motors

NSN 5330-01-389-0664

 

[firstgenlover666]

NSN 5330-01-389-0664

NSN 5330-01-389-0664

So I just replaced the head gaskets again and so far so good. I put a block of wood under the throttle pedal to help keep my foot out of the firewall .

 

[dmetalmiki]

I have never blown a head gasket on any of my trucks...But then I do keep the R.P.M,s at around 2250 .
And,I rarely pay heed to the speed'o.

 

[frank8003]

New studs are in order here
Do it once with best stuff or do it again

MULTIFUEL HEAD GASKET (OLD STYLE) - 12380040

OLD STYLE UPDATED HEAD GASKET FOR MULTIFUEL ENGINES. SOLD INDIVIDUALLY, 2 GASKETS NEEDED PER ENGINE. PART# 12380040 NSN 5330-01-389-0664

www.bigmikesmotorpool.com

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[firstgenlover666]

I have never blown a head gasket on any of my trucks...But then I do keep the R.P.M,s at around 2250 .
And,I rarely pay heed to the speed'o.

I use this truck hauling gravel hay and manure in the farm. It runs good. It will haul 5 tons of gravel.