1wydodge1

What would be the best compounds for towing 15000 lbs and have a fast spool at high elevation. I am building my 5.9, it will have 188/208 hamilton cam. Already have smarty,50 hp inj. and other mods. Difference in stocker vs 62/65 vs 57/65 over 400s.

AH64ID

The stocker spools fast, and has a decent compressor wheel, but I think the turbine wheel sucks, and the cam will only make it worse.

If you have the coin a set of Garrett BB twins would be sweet, otherwise I would look at a 62/65/12/S471 or S472 for towing.

Spooler

Alot of good information on twins out there. Read, Read, Read. After my cam install, the big question for me is do I even need twins. I am thinking about doing just an ED 63/68/14 and calling it a day.

dodgediesel

Stay away from liquid cooled twins if you live in colder climates. More coolant restriction = less heater core heat..........

AH64ID

Looking at the how the coolant runs on my turbo there is no added restriction, and it will actually put more heat into the coolant than not having it. The turbo's are also plumbed on the return side, which is where the H20 pump is sucking coolant.

So pretty much I am going to call 100% BS on that statement.

What you may notice is the truck takes longer to warm up, but that's because of greater airflow thru the motor, and not keeping the exhaust in the motor as long.

icemanjc1

No coolant restriction on mine, almost seems that the truck warms up a little quicker.

dodgediesel

It's cold up here!!! My truck has never warmed up remotley close to what it used to before the twins.........

icemanjc1

Seems kind of strange, the few people I've talked to running Garrett compounds say the opposite. Mine falls in line the same as them. Weird.

AH64ID

Then you have a separate issue.

dodgediesel

I wish I was closer to you!! I have tried everything I can think of. Heater core flush, etc... I'm at my witts ends with my crappy heating issue..

AH64ID

Do you have a coolant bypass?

If you really want to see what's going on you could put a temp gauge in the turbo outlet.

Of all the things that effected my warmup the most the cam was the biggest, more air thru the cylinders means more heat escaping. The coolant filter made a small difference, but not noticeable.

The turbo makes it take longer when sitting, but when moving it's faster barbecue the cold air leaving the heater core is warmed back up before getting pushed thru the block again.

I bet your spool is insane. My Garrett has the same comp wheel as your 3582, but a bigger turbine and it spools fast! Do you run a DP gauge?

enafzige

The 62/65/12 over S476 twins I have work really well for a "cheap" setup. I took a 10,000 mile trip to Alaska and back, grossing over 20,000 the whole way pulling a 34' camper. I never had a problem keeping things cool. The biggest problem at elevation was oil temps. Extended grades climbing to 9,000 ft+ at ~450 hp will cause oil temperature to climb. I usually backed out at around 250° F and let the engine cool a little. FWIW, oil temp will usually run higher than coolant temp.

--Eric

Spooler

Hmm, you installed an oil temp gauge?

enafzige

Yes. It may be overkill, but I've actually backed out several times because of it. I also installed front and rear differential temp gauges, and a real oil pressure gauge as well.



--Eric

Spooler

New meaning to the word Cockpit with all of those gauges... Where did you put the oil temp sender? On top of the oil filter outlet.