Project 350HP update

[6.5quest]

Ok, a lot of questions so I will do my best here. The program is not a KOJO flash, it is just an off the shelf on from a local company.

The coupler that came with the ATT is just fine for the boost we would be using it for, especially on a straight application like it was intended be with that hard 90* bend we have obted to go with 4-ply coupler from another company who is going to be sponsering it as well as most of the external wastegate parts.

That brings me to the wastegate. I considered routing it back into the exhaust but it does make it less effective when it recieves pressure from both sides so I have decided to dump it to the automosphere (hope there are not to many enviros reading this post.

I am not worried about it because the setup we use really doesn't even require the dyno crew to put an exhaust catcher pipe on the tail pipes because we use every last bit of diesel that goes into that motor.

Burns about as clean as a gasser, so a little under the hood won't make a difference. I am still trying to figure out the best place to put the system but it looks like it is going on the x-pipe unless we can find someone to weld cast in time.

The other issue is angle, you don't want it to be placed at a 45* from the exhaust source for flow reasons. We will also have an AEM in dash digital adjustable boost controller to monitor pressure and make changes on the fly, this way we can be much more effecient than having to get out, open the hood, change settings and hope we have it to the right spot.

I think you all will like very much what we are doing here even if we don't hit my goal of 350hp. I would be more than happy to put any new pics in that people want to see and describe what I am doing. Just ask.

Thanks,

Ian

 

[SmithvilleD]

Since the exh crossover is a relatively cheap part & easily swapped/replaced, I'd try that first. Ideally you want to the wastegate venting to impact all cylinders evenly, but the 6.5's exh plumbing is not-very symmetrical in the first place. If one had pyrometer probes at each exhaust port, it would be interesting to see cylinder temp balance before/after exhaust venting.

The only real downside to an external wastegate dump is the sound when it vents. Depending on where it vents & how many cylinders, it can sound sorta crude. The sound is part of my thought on trying the gate in the crossover first. With a little forethought, you could probably mount the gate in a location/orientation to preserve the option of routing the exh bypass gas back into the downpipe if turns out you don't like the external dump sound (may not need 'gate with less/no additional fuel inputs) for normal street driving.

 

[6.5quest]

Just wanted to give an update as to project 350hp. I have been working on the ATT but it has been giving be a bit of a fit. Not because of the turbo but because of the new oil return line off of the turbo, we opted to go with a line that didn't go through the manifold. This worked great on the GM-8 but clearances on the ATT require a little fabrication work to get this new line to fit. I hope to have the turbo fully installed tomorrow. Then it comes down to waiting on my new silicon to arrive for the intake manifold. I will post new pics tomorrow.

Ian

 

[Turbine Doc]

Just wanted to give an update as to project 350hp. I have been working on the ATT but it has been giving be a bit of a fit. Not because of the turbo but because of the new oil return line off of the turbo, we opted to go with a line that didn't go through the manifold. This worked great on the GM-8 but clearances on the ATT require a little fabrication work to get this new line to fit.

Ian

:thinking: Some fab work ??? a single cut of the existing return line below the turbo, enlarge the holes in the drain tube mating flange, to accept larger diameter fasteners, and put on (2) hose clamps & drain extension coupler tube.

Reason I ask is because that is what I did on mine before Slim's ATT kit came with the fittings to do it, he had previously suppiled a copper tubing adapter for the test kit, so that was sort of my idea and I'm interested on why it didn't work for you or did you opt to not want to cut the factory oil return line for other reasons?

 

[6.5quest]

:thinking: Some fab work ??? a single cut of the existing return line below the turbo, enlarge the holes in the drain tube mating flange, to accept larger diameter fasteners, and put on (2) hose clamps & drain extension coupler tube.

Reason I ask is because that is what I did on mine before Slim's ATT kit came with the fittings to do it, he had previously suppiled a copper tubing adapter for the test kit, so that was sort of my idea and I'm interested on why it didn't work for you or did you opt to not want to cut the factory oil return line for other reasons?

Yeah I would have done that but the GM-8 was outfitted with a different return line and -8 fittings on the block and the turbo so I had to stick with this new design, plus we are going with a custom braided stainless line. I will show the fab work tonight I hope when I get it done. I am having the new braided line built up on Wednesday.

Should have the new silicon in by Thursday to finish the job. AirDog sent over one of there brand new fuel systems, so I will start that project next week. It seems the more we get done the more new things are added, but when this truck is done it should be a sight to see. Besides the Bonneville truck I have never worked on a 6.5L with more aftermarket parts. I will try and post pics with a status report soon. Sorry for the delay.

Ian

 

[6.5quest]

Here are some pics I promised of the turbo installed and some of the fab work needed to get the braided oil return line to fit. I am also having to modify the aFe intake to get it to fit correctly. The other pictures are the new Snow water/meth pump they sent over with a shield we built for it for frame rail mounting along with the newly arrived AirDog fuel system that will go in soon.

Ian

 

[Brooklyn Tow]

Looking Good!

 

[Matt Bachand]

Geeze, Ian, maybe you should take this up to the flats and do a '1 up' on ol' Bill!

 

[6.5quest]

Geeze, Ian, maybe you should take this up to the flats and do a '1 up' on ol' Bill!

That would be funny but I don't think a K3500 would do that very well. Plus Bill is after speed, I am after RWHP. It will be an interesting truck when it is done, even if it doesn't set a new record.

 

[635]

Well that won't happen but it will tow to Bonneville again.

This truck is really being built as a tow rig!!

A tow rig that will get over the hills and get good fuel milage!!!

 

[Brooklyn Tow]

And slow down that dodge dude.

 

[6.5quest]

I think all of us just want to see the 6.5 get as much respect as it can get. If that be by land speed records or HP records it really doesn't matter. These trucks have been used for so many different things over the years and are an afterthought to many late model drivers. So if we can show a thing or two about what these trucks can do than I say great! I am always happy to see this community always working on new ideas and helping eachother out. Good luck to everyone on any project no matter how big or small.

Ian

 

[john65td]

X2 on that ian well said!

 

[6.5quest]

So here are some of the new parts I had made up along with the new silicon couplers I got in today for the intake. I had all braided stainless fuel lines made for the FTB mod and will be relocating the filter housing next to the master cylinder. The other larger braided line is the new turbo oil return line and the blue hose is the new fuel feed line from AirDog system.

 

[Veg_Out]

Wow.

 

[Matt Bachand]

Wow is right, what a great thread and even better job going on here Ian. Its like watching 'as good as it gets' going on right before our eyes...

Looks like all she needs now is a new coolant overflow tank!

I have a question about that Fass unit, when you plumb that into the tank, does it have a sock?

 

[635]

Over flow tank is fine. And it is an AirDog not FASS.

 

[Matt Bachand]

Over flow tank is fine. And it is an AirDog not FASS.

Well, it was a jest because the entire engine bay looks spotlessly beatuful with the old stained resevoir. I know its fine.

Fass and Airdog are they same I thought, just father/ son split the companies.

Sorry, Does the AIRDOG have a sock in tank when you plumb it in there?:thumbsup:

 

[635]

Go back to some of the other pictures Ian has posted and you can see a better picture of the over flow tank. The fuel tank will keep the sock. The AirDog system will be installed in the tool box next to the FS2500 oil filtration system, the FS2500 transmission filtration system, and Zex Nitrous system.
The only reason the engine bay looked good was because everything in there is new and with a fresh coat of paint.
This pickup is just a 4X pickup that is used for many things. Going out on muddy trails is one place it does go and in deep slushy snow is another. Pulling cars and pickups out of many ditches is another too. As well as to the ocean and driven on the sandy beach. Rode hard and put away wet it isn't, but it is used a lot!
A major investment has been made in this project to try to find the right formula for one of these 62/65 engines. A lot of work was done to the engine that a lot of people said wouldn't make any difference. But I had to try and see if it would make a difference.
But all in all I just want something that will be dependable for many years to come.
If it doesn't go boom on the rollers next month!

 

[ak diesel driver]

So it's 635s truck I don't believe that was mentioned before.