rebal

HEY guys
This question is for you guys who tow with twins
IM thinking of getting a twins set up but wanted to know if it would cure whats going on.
Right now I have the stock HX35w 12cm with the catcher and mach 1.6
I tow in the 26,000 gcwr +(goose neck equip trailer) and see way to much smoke between shifts and choke out (high EGTs ) above 2300 RPM. this is all easy to manage except smoke in the summer time, it gets bad

So will twins help or should I Drop the catcher or get a smarty set lower # and
go with a 14cm to control Egt ?

or smarty twins with 14cm?
or is there a better single out there ?

If I just hauled the RV it would be fine but now the truck is making $ towing Heavy.
Thanks for the in put
R

Swarthy Dago

Talk to Mark Wilson 866.888.9396

Fishin2Deep4U

You have a couple things hurting you. Not the least of which is the ECM fueling rate. Obviously, running a less aggressive smoke level would help. So, you would need a regular Smarty or you might be better off getting an adjustable box.

The 14cm housing will help with EGTs. But, it's still gonna hit the wall at high RPMs. You can only move so much exhaust through that turbine section no matter how big the housing is. This is because the turbine wheel size remains unchanged.

Twins will help with temps. And choosing the right charger will be the tough part.

I would recommend going to a slightly larger charger now. This way you get EGT relief due to a more efficient turbine side. If you do not increase the compressor side much, the turbo will spool relatively fast. And then that turbo can be used in a set of twins later if needed.

I ran a HX35 with a modded 14cm housing over an S400 for years. The truck would nose over at the trans and drive pressures were crazy no matter what I did. I now run a S300 over S400 and my cruise temps are a bit higher. The cruise boost is also lower. Spool for the set is faster and it is better staged. And it pulls a heavy load much, much better.

Do lots of research before jumping into it, but get a virgin unflashed ECM to start with and try a different box to see what you prefer first.

Dave

97 D-Tec

problem: hx-35s dont like hardly anything that has to do with more power. They easily get out of thier efficiency range. Thats why your seeing so much heat. Would twins help ? Yes of course the would in more ways then just lower egts. If money was an issue, even a bigger single turbo such as a 62 would be a better improvement than the hx-35.

rebal

I have the stock ecm still ,I bought the catcher outright when they first hit the market, from Bob Wagner and its been fun ,But with Kalifornia smog ***** I need to control the smoke .

Will a 62 spool up fast I'm pretty sure I could control EGTs with a single Be cause all I have to do is keep boost around 32-35 psi (max 38-40 psi)and I stay at 1200*-1250* + and a big + I have my turbo mounted E brake and I need that . So that sort of limits me too. would a HYBRID be an option?

DodgenIt

Yea you could handle egt’s with a single. Got to remember that an aftermarket single will already be bigger better and more efficient then your stock HX. So unless you have the spare dough, maybe hold off on the twins.
Look at around a 62/12 or 14. That will give you good boost, spool time, and lower egt’s. I favor Phat Shaft from Industrial Injection myself. Don’t have one yet but have a few friends that do and it’s a real good all around turbo.
Also yes a hybrid would be an option. If you’re looking for a little more with out goin crazy, pretty much anything a little bigger then stock will be good. Check out www.htturbo.com they might give you some ideas.

Fishin2Deep4U

With a turbo mounted brake, you are kinda stuck with the HX35 platform. So that means a hybrid will work.

If you go to an inline, you'll many more turbo options.

Dave

j-fox

I hated my PS 62 for any level of towing. It was like trying to drive a big cammed car on the street.
I love my set-up. I run with the box off and the only issue is right at 50-60 with this auto and towing heavy. Your 6 speed is a better towing trans of course.

DodgenIt

Really j-fox? What'd you hate about it? Ive never heard anyone say they hated the ph for towin.

Mike Holmen

I've towed with HX-40/BTH-3B and a set of garrett 3782R/BTH-3B. I could use up to 150HP sized sitcks, before egt's would exceed 1500 deg's. 125 sized sticks worked nice and my egt's where around 1200 deg's

BigErksG2

i think the 12 cm housing on the hx35 is fine. drill the wastegate out to 1 inch and if you are really worried about drive pressure, do an external wastegate as well and have them staged. my 35 over a 26cm 3b spools quick and egt's are not a problem even with ddp4's. you can build a setup if youre handy with a welder and grinder for about a grand, cheaper than a ps62 and runs ALOT better. jmo.

rebal

Will drilling out the divider lower the drive pressure that much? I did that to another truck I have a really didn't see a difference But I think I only drilled out to 5/8"
Is a pdr hybrid a good chose or maybe a dodgezilla 14cmw? I really need a tough unit, I am towing in the mountains and I hear hx40s are prone to snap
Thanks for all your input and sorry for all the ?s I just don't want to dump cash in the wrong turbo.

j-fox

Fogging out the right side of my truck trying to get some boost is not cool. Mean while all the traffic is gone, my EGT's are 1400.
Only thing I changed was the turbo to twins. This is a sweet set-up.
Personally I felt the PDR40 was as good as the PS-62 was as far as spool up.