Is the HX35 worth it???

[charger 69]

90% of what my truck does is tow the 10K plus GN and if the wife has her way we will have a 5th wheel camper sometime this year. What I need is top end power but i don't want to smoke more than nessary. I was looking through PDR and they have the HX35 which they say is good to 350 HP. and I don't see this truck ever doing more than that. Spool up isn't an issue HP. is. I also am thinking of getting 190 injectors and possibily a water/meth setup. IS THE HX35 worth the money for my application or will the stock turbo do the job as well?? Thanks.

[dpuckett]

The PDR HX35 will lower your EGTs and allow more power than the stock HX35. I am considering that same turbo at this time, as my "reman" turbo I bought appears to have more slack in it this week than last, and it screeches at higher boost levels, but is not consistent. More on that another time.

I put one on my nonIC 91, and it cooled things off considerably, and increased spoolup, just like they claim.

If I had the money, I would get the HX40 or S300 (do it once, and be done, like KTA says), but the $350 difference will buy a lot of fuel.

Daniel

[charger 69]

Its my understanding that the HX40 wont live up to the expectation unless you have the power to make use of it as I was looking at it also but I agree with you in the "pay for it once" line of thought.

[crossy]

I certainly am not the one to answer whether it is worth the money, but I think it is all you will need for your final plan so 'buying it once' will be exactly what you are doing if you get the modified HX35. It fits into your modest goals.
I looked at a lot of Signatures and even Pm'd some guys who did not list their mods, about their mods to get up to the HP/TQ levels they were boasting.
what i found was several guys claiming decent HP levels , with no EGT issues, and they were using STOCK hx35's so a modded one should be great??
I bought a bone stock one with 12CM and once i get all my other ducks in a row I'll already have the right plumbing in place to buy a modded one.
crossy

[Cowboy_Customs]

For what your doing, it'll be a great turbo. I used the HX-35's counterpart, a WH1C for a while before the accident, and loved it. The spool up of the 12cm housing was a nice change over my stock 18cm. Plus the WH1C/HX-35 offered the MWE slot to eliminate bark, and a larger compressor to offer more air for my fueling. I think you'll be very pleased.
Now you mentioned top end power, have you advanced the timing, and added the 3200 GSK?

Sorry I havent been round here too much really. just a glance now and then.

[charger 69]

Yep the 3200 spring is the next order of business along with advancing the pump whick brings me to a question. Does advancing the pump help cool the engine temperature as that is a problem with this truck??

[Cowboy_Customs]

Advancing the pump helps with fuel mileage, and EGT's. It does take some power away from the bottom end, but moves it toward the top end of the RPM band.

[dpuckett]

In theory, you are right. BUT, depending on where "stock" is, you may gain bottom end, too, by advancing a slight bit (to 1.4-1.5mm). There is a point where one starts to lose bottom end, though.

What kind of EGT issues are you having? What RPM? The turbo is one of many players in that game. Timing and injector condition will also affect EGT.

Daniel

[Paccool]

The PDR35 is a good choice. I ran one for several years before the twins and was towing a 7000# trailer. Had about 36 pounds of boost. What housing are you going to run? I had the non wastegated 16 and that was a good housing. I'm now running that same turbo as the top one of the twins with a 12 wastegated housing.

I think the 40 might be a little laggy for towing but can't sa for sure cause I have not towed with one.

[seeker1056]

hmmm, in my engine manual, 1.4 is stock timing.

[KTA]

I tow with a HX40/16cm and 300rwhp. I can run full throttle most of the time with the 40 and it peaks at about 1300egt's. With the stock H1C/18 it would run 1500 easy, so the 40 was worth about 200deg egt reduction.

[charger 69]

I tow with a HX40/16cm and 300rwhp. I can run full throttle most of the time with the 40 and it peaks at about 1300egt's. With the stock H1C/18 it would run 1500 easy, so the 40 was worth about 200deg egt reduction.

Thats what I am looking for,to be able to run wide open and have the power and not bake the engine doing it. Someone on another site said comming up an on ramp empty is one thing but with a heavy load is all together different and thats what I am looking at. I need the grunt on the top end.

KTA what injectors do you have?? I thought we could only get 190s and Pods. I am thinking a water /meth system and possibly larger injectors if I can keep the temps down

dpuckett - Egts at 2500 RPM will rocket right past 1500* when its working hard unless I drop it into second gear. If I do pull in overdrive everything gets hot quickly so I need the 3200 spring first.

[KTA]

That truck has 370tips on 1st gen bodies. They were cheap and are a decent sized injector without going to POD's. They do haze bad because of the wrong spray pattern but I don't care. Truck has stock air filter and full 4" muffled exhaust. It pulls the pulling truck gross weight is 23000lbs usually.

[charger 69]

I think between truck ,trailer, and load I am about 20-22K so if you can keep your combo under 1300* I shouldn't have a problem with 190s and water/meth and an HX40 plus it will need a 4" down pipe anyway. In my case I'd like to keep the smoke to a minimum so I don't upset somebody in our "politicly correct" world.

Do you have any knowlege of the DDP injectors from Piers?/ They seem a step up from 190s but look a bit pricy.

[dpuckett]

People who have run the DDP3s and 4s like them, but airflow is a must. Beyond that, I cant tell you much.

seeker1056- If you look on your engine plate (provided it is still on the engine), the timing for intercooled engines is 1.25mm; nonIC was 1.4. What year is your Cummins manual from?

DP