Engine/Transmission (1998.5 - 2002) PDR Piers Nasty 9 (Modified HY35)

[Eric Lee]

Im thinking about a PDR Nasty 9 for my '01 - Anyone out there running this turbo and willing to give me your feedback on it? Piers said they hog out the exhaust housing to around a 12mm, install a larger pinwheel, the turbine blades are zero balance, and modify the bearings for around $450. This all sounds good to me -- I would feel better with some information from current owners.



Plan B - What are the options as far as turbo upgrades remaining with the internal wastgated design of the HY35? I have the Banks Power Elbow with 4" right from the turbo and would like to use it with my upgrade. What other turbos use this exit design? Are the HX35 wastegated, and would they match up with the exhaust elbow?



Thanks in advance - Eric

 

[boydo]

I wouldn't put much time into the hy35 turbo it's good for stock to mild performance, If you wanted a turbo upgrade consider pdr hx35, or even look in the classifieds for a used hx35, and a exaust housing that would fit your application most come with a 12 cm housing but if you plan on increasing your power more maybe a 14 cm wg housing may work better. If your talking to Piers allready your in good hands. Good Luck.

 

[Mactruck]

You may want to talk to 24V-DSL.

He was one of the first to have one. He has since uppgraded but I pm'ed him a few times with questions when I was upgrading my turbo. He had alot of nice things to say about it.



I went with a PDR HX35 w/ a 14cm housing. I have been happy with it but I need MORE

 

[Eric Lee]

Mactruck - Are you saying that you put in a HX35 - 14mm housing that has the same exhaust flange as your old HY35 that came in your truck? I had a looky at your truck and you have some good pics for larger tires, do have any lift on it? I think you mean 16" on the rims though?

Anyway - about your turbo - if it is a mate I think I'm narrowing in on better choices -- Thanks

 

[Eric Lee]

I need to pay more attention - I went back to your page for a good look and I see you have a lift plus alot of other goodies -

 

[Mactruck]

Those are 17" rims. That is not a misprint.

I wanted a 9" wide rim because I felt the 8's were too narrow for a 35 inch tire and the 10"s were too wide. The 17"s I got were the only 9" wide rim I could find, So I put the 315/70 r17's on that come on the Hummer H2.



The PDR HX35 was added at the same time as the 5" exhaust. The downpipe fits either a hx35 or hy35. The housing (14cm) only fits the HX.

 

[Cummins4Life]

I have one setting right there. I plan on using it once I outgrow my WH1C. I'm not sure if it'll keep up with my EGT's once I get my injectors but I like really quck spool. I think it may be a good compromise for the 300rwhp I want.



Joe (24v-DSL) sure liked it when he had it, I belive he dynoed over 400horse with it too.

 

[sparks57]

The only thing I would look at, if you want to use one, is that you keep it under 22 psi. I read somewhere in the TDR that the hy-35/9 is only good to 22psi, after that the boost is too hot.



Of course, the PDR version may be able to put out more.



If I were you, I'd go with the PDR35/14.

 

[Eric Lee]

With my set up, with the stock HY35 - boost tops out at 35 - 40 psi. I believe stock, Dodge sets it up for 22 psi? I'm good for around 5 seconds at WOT before the EGTs go over 1250.

How would I control the boost with either turbo? Boost controller valve on the wastgate line? Adjustable wategate? With my Banks system they had me modify the wastgate by inserting a jet inside the wastegate line running to the compressor, which increases boost but doesn't allow for adjustment.

How about numbers on manifold back pressure? Anyone here test before and after a turbo upgrade? - Eric

 

[GFrance]

I upgraded from hy35 to pdr hx/35 14cm Just got back off of vacation yesterday & what a difference on keeping egt's down while towing 12,000 lb 5vr. Had more pedal I can use, got . 5 more mpg while towing do to staying in od more. Bolted right up with my Banks exhaust brake & 4" exhaust. Dynoed at 332. 7 at Piers last week with my set up.

 

[Eric Lee]

GFrance - I like what you are saying about the PDR hx35 - I also tow heavy. Do they actually mate two housings to make this turbo or do they modify a turbo that would have come out of the factory as a HX35 with a wastegated 14mm exhaust housing. If this is the case what would the part numbers be for this turbo? I see there is a turbo on ebay right now that is listed as a 'LM25S'



As far as PDR - What is the core charge? Should I be hunting a 14mm HX35?



I see you are running Banks stuff too -- That opens up all kinds of questions about compatable upgrades - I see you are running injectors - Smoke?



Thanks for the input - sometimes I think I 'overthink' this stuff- Eric

 

[SOLER]

I have a 2004 with a HY35 9cm. I put an EZ on it with the boost elbow. It would get up aroun 32 psi. Once or twice I saw 35 psi. I had the EZ on for about two weeks and the turbo grenaded. The bearings are shot and the blades are worn down. The thing started leaking oil. See the thread here:



https://www.turbodieselregister.com/forums/showthread.php?t=111794



I'm looking for a larger one, but am limited on what will fit. If I had my '01. 5 HO, I'd be looking at a HX40 at least, if not a B1 or something similar. I'm leaning towards DD's Jammer, or a B1 Bomber for my '04.



SOLER

 

[GFrance]

Eric the hybred is from a hx 35 that they refit don't have part # I bought this one used from Rip & Robert & he instaled it for me. Kept my hy35 for a spare. No smoke with the Banks auto mind & dd 2's. I don't plan on going any farther down the slippery slope for I'm happy that I can breeze right over the mountains here in Oregon with 5vr in tow, no egt worries & all the speed I need to stay out of everyones way.



By the way I was born in Grand Rapids not far from Kalamazoo.

 

[SRadke]

Soler, you may want to look into High Tech Turbo's new B2 line. I've had the "killer B2" on for a couple weeks now and it's a really nice unit. Quick spool and lots of air. I was leaning toward a B1 derivative but the price shyed me away. PS, I ran my stock turbo up near 40 psi many times with the TST pushing it with no trouble at all



-Scott

 

[JR2]

An HX35 from Piers will bolt right up in place of the HY35. You use the same elbow and the exh manifold is exactly the same. I did this and then later replaced the HX35 with an HX40. Next step is twins. . I want to put the HY35 on my snowmachine

 

[Eric Lee]

I am also looking at where to stop - I figured the Banks System would be good. Now i'm dreaming of turbos and injectors... ... lift kits, bigger tires and locking differentials - I'm afraid it won't stop -- I bet there is a 12 step program for this... ... ... ...

 

[RyanB]

SRadke- I to just got High Tech Turbo's HTB2/64 (Killer B2) I unfortuantly won't have the turbo on and going untill early spring because I have put the conversion truck on the back burner for a while to get some extra $$$. The turbo looks great though and the service from Paul at HTT was the best!!! There are a few things that I have to figure out and in the middle of the winter up here in Canada when there is nothing to do but snuggle up to Momma or find something to do by the fire... . I am going to pollish that bad boy up!!!!!!!



So was your turbo everything you expected it to be? was it as good as they say it is for your EGT's? I am going to be running a 12valve and EGT's will be high and I need to control them.



Ryan

 

[Eric Lee]

I called PDR today - real people answer the phone there - and the technical people are not mysteriously MIA for a 10-20 min hold.



I learned that the HX35 has a one hole plenum and the HY35 has a split plenum which affords better effeciency. The 9cm HY actually flows like a 12cm, inheriently quicker spoolup and less exhaust pulsing. I'm getting the feeling tht the HX35 and the HY35 are very simular in overall performance with the HY advantaged in down low and the HX up high.



I think I remember the tech at PDR say the stock HY35 at 35psi boost has about 75psi manifold backpressure, with the PDR 35HX has around 55psi at the same boost. I should have written those figures down - the guy spent 5-10 min with me and I didn't bother to have a pen???



He also said the HX35 is definately recommended with injector upgrades. Makes sense - more fuel to burn ----- so I guess my decision will lie in whether I intend to do injectors --



Anyone know if the Banks Quick turbo is a split plenum compressor housing for the HX35?



Thanks for the input - Eric

 

[SRadke]

SRadke- I to just got High Tech Turbo's HTB2/64 (Killer B2).....

I'd love to help you out with this Ryan but the diffrences betwen a 12 valve and a common rail are huge to say the least. On my truck with stock injectors getting my extra fuel from duration (which is noted to produce high egt's) it cooled things down a lot. I used to be able to see numbers as high as 1600° with plentiful smoke on high box settings and now temps are down around 1300° with only a haze of smoke on the same setting. It is leaps and bounds over my tiny stock HY35 and spools almost as fast even with the boost controled fueling of these trucks. I think you will be pleased.



And for you Eric, there are twelve steps. Here they are in no paticular order:



1 Gauges

2 Fueling box

3 Exhaust

4 Intake

5 Injectors

6 Turbo

7 Clutch

8 Tires/wheels

9 Another turbo added to the other

10 O-ringed head

11 Bigger injectors

12 Tougher clutch

13... ..... Yea, I'll stop now



-Scott