Modified 6.5 Build

[n8in8or]

Keep the updates coming.... I'm interested to see how this all turns out.

 

[ak diesel driver]

Muggy rod is a special rod for welding cast iron. Alot of people swear by it

 

[n8in8or]

Muggy rod is a special rod for welding cast iron. Alot of people swear by it

Ah, thank you. Recently I was looking up welding aluminum with oxy/acetylene and during that search found a rod for welding cast iron with oxy/acetylene that they claim is a tough enough repair to weld valve seats and have them re-machined. I'm going to look into that further.

 

[Twisted Steel Performance]

I have some of those, they require a lot of heat.

 

[n8in8or]

I have some of those, they require a lot of heat.

Which? The muggy rods or the stuff for oxy fuel?

 

[Twisted Steel Performance]

The brazing rods, they aren't cheap either.

 

[Twisted Steel Performance]

I use the muggy rods at work sometimes, we have a furnace we heat cast in.

 

[6.2 turbo]

Turbo is just a hx35 with a hx40 turbine. The big turbine combined with small precups should make good power from idle to 4000 rpm.

 

[Will L.]

No special technique with muggy, just pre/post heat and yer good. “V” out as needed of course.

Turbo is just a hx35 with a hx40 turbine. The big turbine combined with small precups should make good power from idle to 4000 rpm.

Dude- 35/40 hybrid is a great turbo for these engines. Its a more expensive investment than ATT, but since that price went up much closer to the 35/40 which has lower price than it used to years ago, I will probably bite the bullet for it too. Not gonna beat Nate’ numbers with one, but normal use and towing- yeah. I have only delt with 3 trucks running them, and heard from several others - all happy. My expectation is diamond precups, or at least T cups.

Now, you guys wanna do lots of ‘splainin’ and links and everything about the details of what I am about to buy to weld up these other heads I have with the fine cracks starting that can be machined down for valve seats PLEASE. Start another thread if needed.

 

[6.2 turbo]

Here is my template gasket. New coolant port is 1 inch diameter.

 

[Rockabillyrat]

The stock pistons got shaved .040, getting custom Cometic gaskets. Using the smallest precups , combined with 311 nozzles @ at least 3000 psi pop pressure. And the little .290 pump,which should easily pump enough of fuel for 400 hp. Also planing on a center mount turbo.

Even with a modified leaf spring I don't see a .290 pump pushing enough fuel for 400hp. Why not go with .330 pump?

 

[6.2 turbo]

Yea ,well this head and rotor was only $200 brand new. 400hp is probably a bit optimistic . But I do have some pump mods that work.

 

[6.2 turbo]

Cometic 5 layer gaskets should be here soon.

 

[6.2 turbo]

Cometic .056 thick 5 layer gaskets.

 

[n8in8or]

Cometic .056 thick 5View attachment 56631 layer gaskets.

I don’t recall if you mentioned it earlier in the thread.....what compression ratio are you shooting for?

 

[Will L.]

some big steam holes~ now water ports!

 

[6.2 turbo]

It should be a little less than 18-1.

 

[6.2 turbo]

Planing on 25 psi boost with a 3 inch intercooler. Should run pretty good. Just need to put it all together.

 

[6.2 turbo]

 

[Twisted Steel Performance]

I like the green, I've been looking for classic JD green and haven't found the high temp yet...