1994 K3500 extended cab dually

[dbrannon79]

Nice!

I noticed you have the CDR bung opening for the valve cover on the drivers side, are you running it on that side, running dual CDR's, or making provisions for a centrifuge setup?

 

[n8in8or]

Nice!

I noticed you have the CDR bung opening for the valve cover on the drivers side, are you running it on that side, running dual CDR's, or making provisions for a centrifuge setup?

Good eye. I’m running dual road draft tubes.

 

[n8in8or]

I got the driver side header put together. For some reason it took almost as long as the turbo side, even with 2 less tubes. I think I’ll have less to clean up on the inside of it though.



Next up is the crossover.

 

[ak diesel driver]

How similar is that to the military version?

 

[n8in8or]

How similar is that to the military version?

Pretty different. I didn’t like how number 5 cylinder was done on the Hummer headers, plus I wanted v-band flanges and I wanted to control the routing of the crossover, so for those reasons I decided to make my own. Ironically, I also don’t love how I did number 5 on mine, ha.

 

[Twisted Steel Performance]

@n8in8or

Could you post a pic of how those flanges fit on the head around the glows and other humps on the mounting surface?

Another question sense you are in the area, if a person used 1 1/4 diameter sch 10 ss pipe and connected 2 cylinders into 1 pipe, do you see room to have 2 crossover tubes, say 1 1/2 diameter ? That way maybe get better use of the firing order ?

 

[n8in8or]

@n8in8or

Could you post a pic of how those flanges fit on the head around the glows and other humps on the mounting surface?

Another question sense you are in the area, if a person used 1 1/4 diameter sch 10 ss pipe and connected 2 cylinders into 1 pipe, do you see room to have 2 crossover tubes, say 1 1/2 diameter ? That way maybe get better use of the firing order ?

Yes, I can definitely get you some better shots of that for you. I should be able to this evening.

I don't see any reason why dual crossovers couldn't be done. I was mindful of the firing order on the turbo side, making sure 2&4 were on one half of the turbine and 6&8 were on the other side of the turbine. I also attempted to pair 1&3 and 5&7 on the driver side, but I compromised those pairings so I could get the tubes in the space I wanted. I hadn't thought about dual crossovers for a sidewinder.....that's an interesting idea. That would have made construction of the driver side easier.

 

[Twisted Steel Performance]

I'm guessing you also plan to use a couple of flex sections on the crossover?

 

[Twisted Steel Performance]

I've contacted the shop that produces those flanges, they won't make them in ss... So I'll play on cad and make my own, I'd like to use 1/2" for the flanges and transaction from rectangle to round on the flanges, but we will see, I'm not to good at cad...

 

[n8in8or]

I'm guessing you also plan to use a couple of flex sections on the crossover?

I hadn't planned on it, but now that you're mentioning it, yeah, that would be a good idea.

 

[n8in8or]

@n8in8or

Could you post a pic of how those flanges fit on the head around the glows and other humps on the mounting surface?

Another question sense you are in the area, if a person used 1 1/4 diameter sch 10 ss pipe and connected 2 cylinders into 1 pipe, do you see room to have 2 crossover tubes, say 1 1/2 diameter ? That way maybe get better use of the firing order ?

Here are some pics. This flange is one I had made for me locally that was a copy of the ones you can get online.



It could use a little touch up with a grinder to get it to align properly.

 

[Will L.]

All this other nonsense stuff like steering and brakes on the way of exhaust… just not right!

That should help a good chunk, definitely need a flex in there for expansion under heat.