550-600 Hp Goal
 

My Hp goal with a single charger is 550, but i still tow a fifth wheel. With twins I want to hit 600 on diesel, maybe some spray but i was told if i want longevity out of my motor to stay away from the spray. So i might just stick to water. So what are some experience with longevity on using spray. I dont feel like breaking internal components on my motor. Also charger wise, I was told a 64/14/71 charger will work well for my application. For 500+ Hp for the single, Twins will come at a later date as the funds come in. Also this isnt my only fast toy, so it doesnt have my full attention.

I think you will be fine with a set of head studs and a small shot. If you go with the 64mm I would get the 13ss housing better spool up and a better wg set up. I woul remove fuel plate, add rack plug ( unless you have the 215 pump), tune afc, get a set of 5x14 injectors, upgrade turbo, head studs, small shot of the gas, bump timing arround 16-18* and upgrade your trans.

In all honesty, you will want to at least o-ring the head and run a marine gasket with re-torqued head studs, for the best longevity and reliability out of your engine. I've driven /known a handful of 500+ hp trucks with singles, and towing has never been fun with them. Egt's get hot, smoke is hard to control and there is generally a fair amount of lag.

As far as modified rigs go with towing in mind, I would be leaning towards the twins pretty hard if I were you. This way you always have the power on tap (Vs. spray or water/meth) and our EGT's can be more consistent as well. Twins can also be had for less than you would think, especially if you have the access to some tools for fabrication. I run small towing twins on my truck, and can't break 1100* no matter what I try. I also have no problems beating Mustangs, 3series BMW's etc while towing a light load (7000#s). And the cost of building twins worked out to well below the cost of a 62 or 64mm single.

You will also need some pump and tranny mods to reach 550-600hp, but it is totally do-able.
Sean

an o ringed block and head and studs. if you still want to pull a trailor grind your plate to a 100 and use the aniroid to control low end fuel. is it a stick or auto? and leave the spray for the ricers to mess with you can make all the power you want with #2 and airflow.

My truck is a auto. What set of twins do you run sstockton? A hx 35 with an htb2? Its going to be a while before all this happens im in the process of acquiring a transmission for rebuilding.

hx35 12cm housing with an external gate over an ht3b 26 cm housing. quick spooling with good top end

just watch out when that secondary lites itll spin that 35 pretty dagon fast. im in the works of a similar setup right now hx35 over S475 and im going to have a blow off valve in the hot pipe from the primary to the secondary to bleed of some exhaust gas. youll aslo probably want to install a drive press gauge and a boost gauge between the big and little turbo so you can keep an eye on your pressures and get them as close to a 1:1 ratio as posible. hope it helps:c:

What about a 62/14/71 single turbo charger with an external wastegate? I want to be able to tow right off the bat without surging or excessive egt, besides with that much power my right foot might cause me to break stuff. I want a reliable, good running, quick pick up. Lenny at DDP said its possible to run 12's with 500 HP with a good transmission.

if your towing with a 62/14/71 with an auto you will way high egts, i know a truck with same turbo that his egts are higher than mine towing the same waight and all im running is a hybrid

thats insane. It should theoretically be better on paper because it should get rid of exhaust gases faster. Is his truck tuned properly? I want to have a good running truck that gets good mileage, with about 500 Hp, I was thinking of actually doing the hybrid upgrade with the htb2 26cm housing for a twin setup, but I want a turbo that has a stronger shaft than the hybrid 35... But if you send your turbo off too htt and have him upgrade it and balance the shafts and you watch your drive pressure i dont see why you wouldnt be able to get away with a cheaper setup that has the same power with quicker spool ability. I dont think I would want to push more than 60lbs of boost with the hx35 hybrid setup over a htb2 with 26 cm housing... That should get me where I want to be... Plus it will save me a lot of money in the long run. What do you think about your hybrid turbo setup 94cummins12v?

to be honest with you i love this hybrid way better than the 62 i was running, the spoolup is way faster for one, ive notice a slight amount of lower egts, and i dont race my truck so i didnt the the 62, the hyrbid is way better for pulling heavy loads. you have the responsivness of the stocker 35 and the air of a hx40 theres no downfall to these turbos

If set up and wastegated properly, the 35 won't be spinning fast at all. That is the point of twins. Use the large turbo for volume, and the small turbo for spool up and to help get the larger turbo started spinning by drawing air across the compressor wheel. Once the large turbo lights, the small turbo should be wastegated to keep it moving at a nice slow speed, but still provide the exhaust flow into the bottom turbo. Turbo maps are all done in Pressure ratios, inlet pressure vs. discharge pressure, the volume is strictly reliant on the bottom turbo and what it can move at the turbine speed/PR that you are running at. The top turbo also runs at a relatively low PR keeping both turbos moving slowly thus increasing efficiency and extending turbo life as well.

What housing were you running on the 62, and what housing are you running on the hybrid? The 62 is capable of moving quite a bit more air than the hx40. the hx40 is only a 60mm comp wheel with an old and relatively inefficient design that doesn't push nearly as much air, and spools slower. We ran an hx40 with a 16cm WG housing and a 62/65/16wg on the same truck and the spool up was much better with the 62. Had the 62 had a 12 or 14cm housing it would have been better still.

Sean

Sorry to say that there is no way this would happen unless your buddy has alot more fuel than you.As Sean has already noted the 62mm S300 variant has a better compressor map than your HX35 hybrid and thus it will provide much better cooling.

It will only cool better when you get the turbo to light before it takes off the 62/71/14 will run hotter that the 35 hybrid. another thing to remember is the tc plays a big part in turbo choice.

62/71/13SS lights as quick as or quicker than a HX35/40 hybrid and it will cool alot more efficently than the HX35/40 hybrid.

he has the 14 not the 13ss ...

Well I haven't been on in a little while so Im just now getting back into this post. So a 62/71/12 or 14 would be ideal for a good single setup. Lenny at ddp said I would like a 62/14. Plus if I can get 450 Hp on a single and still keep my mileage thats probably the route I will go since money is an issue right now...

Then it sounds like a 62 would be perfect for you. I would stay away from 35/40 combo myself unless your trying to stay on the really cheap side of things.

if you only want 450 I would go with the 62/65/14 I ran one of these a while ago and loved it spooled very quick with good top end only thing is if you want to get your 550 your gonna want to go bigger ... couse its a great top charger for twins:humm:

you could build a custom hx35/40 hybrid with a 14cm housing over a htb3.5 and have a really big setup:U: