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Yet another 6.5 build --- this one for towing

Matuva,

I went with the HP/HV pump only for the need for more flow & pressure at lower RPM's, ( I built for towing only ), my relief spring was changed from what came with it, I had a local race shop advise me here and they gave me the spring in it now, I have good pressure and high flow, keep in mind I have 2 large oil coolers I am feeding also..... I needed to ensure I had lots of flow....

the HV/HP pump might be over kill, but that is what I am good at......
 
HS rockers are in .....

I finally took the time to get the HS rockers installed and a few other small things done, this is the last thing I planed to do for this project, there has been a lot done that aren't in this thread, like a cac, wmi, different turbine hsg & blades, etc, all done to help me tote a load when I feel like it and not worry tooooo much.

The HS rockers are top notch, very good fit, these won't be moving and loosing a button.....

After I get everything buttoned up and she gets a bath, I will see if she sounds any different with a tight valve train..... and this one is done.....

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Very, Very impressive build. I just finished reading this thread for the first time, and loved every bit! How are your EGT's now with the WMI, and other mods? How many miles do you have on the engine now? Once again, amazing work!

Matt
 
looks awesome!

fill us in with a report card on how she is performing, any things you did that you wish you would have done differently, stuff you didnt do but wish you did, etc. if you dont mind. I am curious to see how its doing for you.

How does it behave while towing? how heavy are you, what gear and RPMs are you running?

Sounds awesome, thanks for taking the time to post it all up!
 
GM Guy said:
looks awesome!

fill us in with a report card on how she is performing, any things you did that you wish you would have done differently, stuff you didnt do but wish you did, etc. if you dont mind. I am curious to see how its doing for you.

How does it behave while towing? how heavy are you, what gear and RPMs are you running?

Sounds awesome, thanks for taking the time to post it all up!
Click to expand...

A little update for some of your questions.....

I have around 15K on the motor now - I don't use her much, I have made a few changes & updates sense first built, went from a 12cm turbine hsg w/12 blade wheel to a 14cm 10 blade wheel this gave me more power and a lot less egt heat, the feel on the road towing went from good with the 12 to great & easier with the 14.. turbo - Holset 35/40 - 10 blade turbine wheel / 6 blade pro comp wheel , boost set at 25psi but never use that much...

Installed a CAC.

I now have a WMI system but rarely turn it on, have a 14gph nozzle in it right now.

When towing the horse trl and 3 horses the rig tops 20k total. I tow in 5th gear mostly and I drive by the gauges, I can see high egt's above 1100+ at times but not often.

My IP is set at 100cc now, but I have NEVER went close to WOT towing this heavy, but I haven't been up anything bigger than a 3 mile 7% grade loaded yet either.

With the 12cm hsg, the motor felt like it was "twitchy", just waiting for more go fast petal, had 5-7 psi cruising at 75mph empty, had instant 25psi boost anywhere over 1500 rpm's. Motor always felt like it was ready to go more than needed power wise. With the 14cm hsg, I still have instant boost over 1700rpm's, motor sounds more relaxed and at ease now, pulling power is much better with the 14 hsg & the 10 blade turbine wheel ( hx35 turbine side )...

The rockers took about all the rattle away, once the fuel system was bled again the idle went back down as it should be.

I guess, all in all, I wouldn't have done anything different with the ceramic coatings other than maybe used a little more. I truly believe, NO- I KNOW that a few of the coatings I used are directly responsible for how well my motor handles the high egt's and other temps, I do know that I have NO heat trouble at all, I blame this solely on the 3 different heat barriers used inside the motor with the coating in the exhaust & intake runners & pistons being the highest contributor to getting the exhaust out and not allowing the heat to soak into the motor and keep it heading out the pipe and not in the motor, this I will do to ANY other motor I build again... I can for sure make this statement because almost everyone with a 6.5 has some kind of "too much high temps" is almost normal as we all know.

Truck has 3:73's, nv4500, 245 rubber.. towing my setup interstate speeds around 65-70 with ease but it gets my rearend hot quick being a 3/4 ton so I stay around 65 or so when I think about it...

Member "Diesel Nut" took it for a spin loaded a few weeks ago, 90* , 60% humidly, 20-30 mile ride on I-26 here in the upstate. he might give you another prospective if he see this...

Fuel mileage during the break in trip was 20-22mpg, empty and cruse set at 75.... I haven't checked it again yet, we are taking another road trip of 2500 miles the first week of August so I will check it again then....

One thing I really wish I could figure out how to prove is the thermal barrier used in the runners and how it block or stops the exhaust heat from transferring to the heads, I did do a test with a coated piece of metal, coated one side, then stuck a torch to the other side to simulate exhaust flowing across it and I can't ex-plane how it works but very very little transfer of heat occurred.

If I had it to do over again, I would start with a P400 and do the very same thing again, maybe more coatings.. and have it in a 3500 cc.....
 
sctrailrider said:
A little update for some of your questions.....

I have around 15K on the motor now - I don't use her much, I have made a few changes & updates sense first built, went from a 12cm turbine hsg w/12 blade wheel to a 14cm 10 blade wheel this gave me more power and a lot less egt heat, the feel on the road towing went from good with the 12 to great & easier with the 14.. turbo - Holset 35/40 - 10 blade turbine wheel / 6 blade pro comp wheel , boost set at 25psi but never use that much...

Installed a CAC.

I now have a WMI system but rarely turn it on, have a 14gph nozzle in it right now.

When towing the horse trl and 3 horses the rig tops 20k total. I tow in 5th gear mostly and I drive by the gauges, I can see high egt's above 1100+ at times but not often.

My IP is set at 100cc now, but I have NEVER went close to WOT towing this heavy, but I haven't been up anything bigger than a 3 mile 7% grade loaded yet either.

With the 12cm hsg, the motor felt like it was "twitchy", just waiting for more go fast petal, had 5-7 psi cruising at 75mph empty, had instant 25psi boost anywhere over 1500 rpm's. Motor always felt like it was ready to go more than needed power wise. With the 14cm hsg, I still have instant boost over 1700rpm's, motor sounds more relaxed and at ease now, pulling power is much better with the 14 hsg & the 10 blade turbine wheel ( hx35 turbine side )...

The rockers took about all the rattle away, once the fuel system was bled again the idle went back down as it should be.

I guess, all in all, I wouldn't have done anything different with the ceramic coatings other than maybe used a little more. I truly believe, NO- I KNOW that a few of the coatings I used are directly responsible for how well my motor handles the high egt's and other temps, I do know that I have NO heat trouble at all, I blame this solely on the 3 different heat barriers used inside the motor with the coating in the exhaust & intake runners & pistons being the highest contributor to getting the exhaust out and not allowing the heat to soak into the motor and keep it heading out the pipe and not in the motor, this I will do to ANY other motor I build again... I can for sure make this statement because almost everyone with a 6.5 has some kind of "too much high temps" is almost normal as we all know.

Truck has 3:73's, nv4500, 245 rubber.. towing my setup interstate speeds around 65-70 with ease but it gets my rearend hot quick being a 3/4 ton so I stay around 65 or so when I think about it...

Member "Diesel Nut" took it for a spin loaded a few weeks ago, 90* , 60% humidly, 20-30 mile ride on I-26 here in the upstate. he might give you another prospective if he see this...

Fuel mileage during the break in trip was 20-22mpg, empty and cruse set at 75.... I haven't checked it again yet, we are taking another road trip of 2500 miles the first week of August so I will check it again then....

One thing I really wish I could figure out how to prove is the thermal barrier used in the runners and how it block or stops the exhaust heat from transferring to the heads, I did do a test with a coated piece of metal, coated one side, then stuck a torch to the other side to simulate exhaust flowing across it and I can't ex-plane how it works but very very little transfer of heat occurred.

If I had it to do over again, I would start with a P400 and do the very same thing again, maybe more coatings.. and have it in a 3500 cc.....
Click to expand...

Great motor, has plenty of power and I would have to say it would give a duramax, cummins, and powerstroke a run for there money. Truck ran great and held its egts with no problems. When Chris let me drive his truck I was like a kid in a candy shop. I never had to go over 1/4 throttle even on the hills. The engine is very impressive. If I would afford to build the same engine I would.
Thanks again Chris.
 
Just saw this... Very interesting. From the sounds of it, I will be getting the same, or very similar to your turbo for my truck. Going with the 14cm housing as well.

Sent from my ST26a using Tapatalk
 
I know this is a old thread but I have a little update someone might be interested in....

I have stayed in contact with the owner and he reports the motor is as strong as the day he got it, nothing has gone wrong, can't make it run hot no matter the load...

And the truck may be coming up for sale.....

I don't know the asking price yet, he is not a member here but I invited him to go to the other site and join and give folks a update... the pics here are gone but are still on the dieselplace and that site had lots of interest..

If anyone is interested is hearing how the motor performs after 5 years with all the coatings maybe he will give a update their....
 
I`m going to have to read through this thread and figure out how to get the fuel mileage of My truck into that 20 miles per gallon area.
Thank You for posting and bringing this thread into view.
 
MrMarty51 said:
I`m going to have to read through this thread and figure out how to get the fuel mileage of My truck into that 20 miles per gallon area.
Thank You for posting and bringing this thread into view.
Click to expand...

Unfortunately the pics here are gone, I hate to send people to another site but the thread on dieselplace has all the pics and is 16 pages long and more details...
 
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