Hx40

[GeneralMachine]

Extreme 1

I thought i had my mind made up before tonights post seems there is more for the 40 than agaist it, Im just wanting to do it right the first time and be done with it. Ill give pdr a call and talk to Al. Thanks again Harv

 

[Reb.B]

the exhaust wheel is just too big for the 40 shaft. Plain and simple. Whoever said there are the 40's that are blown up and the ones that are going to blow said it right, . . i don't care who's 40 it is. PDR balances them, does oiling modifications in the bushing and balances them, . . but up to 450 HP will blow them, . . i've blown 40's at 300 hp. I feel that one should go with a PDR 35 with a 16 housing and 4" exhaust, and when it is not enough then its time for a PDR 50/55, if that isn't enough, change the head gasket, oring the head and block, and go twins

 

[KLockliear]

Originally posted by Reb. B

'94, pro street dually drag race truck

Where'd this come from? What's the skinny on it?



Oh, and yeah, you can blow up an HX-40 if you want to at just about any power level over 300hp... but if you know what NOT to do, they are quite reliable up to 500hp - providing you got a good one from the get go.

 

[BushWakr - RIP]

FWIW,



PDR had a '40 come back into the shop that was originally run on an Auto Werks truck... this was (going by memory) about 2 - 2 1/2 years ago.

Since that time it has "gone out" and "come back" a number of times and, was abused big time, until recently when it went back on Piers' truck.

It was installed a day or two before leaving for Muncie.

He ran it good and hard 44hrs down and 40hrs back. He ran it on his new dyno and turned in some decent HP numbers (500+ I believe) with it.

Last week nascar mark put it on his 1st Gen and promptly turned in 346 RWHP with it, up from 328 with no other mods and, still ticking..... not bad for a "not so good HX40... . "



NO FLAME INTENDED HERE>... .



bob.

 

[Strick-9]

BushWakr,



I'm fairly sure Piers had the HX50 on his truck at Muncie. Maybe he swapped turbos for the drive to and from Muncie (unlikely), but when his hood was up on Saturday there was an HX-50 bolted up.



-Chris

 

[Forrest]

Bought my stock HX40 from Mitchells many towing & high EGT miles ago. Still tight & boost limited to 40psi.

 

[WadePatton]

Originally posted by Joseph Donnelly

Precision balancing is what the 40 needs most. I'd say the 40 is appropriate up to about 450 hp. Between 450 and 500, it works but egt's will get high. Pius and others are working on turbos for those appplications; the H2E is one such...

With DD3's and DDUFM and 5", my planned mods should put me square on 475hp according to the configuration machine on DD's site. Am I hearing now that a "tuned" 40 won't flow quite enough for that power level? What about the Pius H2E? Other options. I don't want to do twins. Isn't the B1 and 50/55 a bit much? Or is that the ticket?



As much as my TDR buds would like it, I don't want to be selling a nearly new 40 as I have to upgrade.

 

[Briar Hopper]

a PDR 40 should do you just fine, Wade. A lot of the 40's survival rate seems to depend on the driver and the truck, especially driving habits and fueling levels.

Keep in mind the fact that I tow trailers with mine, and I can and do tow heavy loads with it, without EGT being a huge concern. The Van Aaken box helps keep EGT's in check when towing with lots of fuel, I've compared with and without.

I've seen a local boy blow up a PDR 40, then a PDR 50 two weeks after that. All with street use only, he doesn't tow or sled pull. He also burned up a South Bend clutch that has held far more power for other drivers, than the level of power he has in his truck. And he just a week ago lunched his 5 speed completely. Bad luck? No. Ignorance? Yes.

 

[JohnE]

Does anyone remember where the HX-40 comes stock? Cummins ISC & ISL engines.

The ISC & ISl cover a duty range from approximately 200 to 330 hp. (I skip the RV and emergency vehicle series as I don't feel they are a true sampling of the 8. 3l and 8. 9l engine usage. ) This is a FULL rating and they have very good luck running the Hx-40 series turbo.



I'm in the transit bus business and feel very little beats the abuse these engines and turbos receive from duty cycle, idiot driver's, and lame maintenance. Surprisingly little turbo problems EXCEPT from the self induced failures.

 

[WadePatton]

Well Tom, some folks is just hard on equipment.



I, like you, use equipment and push it towards its limits more so than most folks. But you have to know when to feather the throttle and when to dump the clutch.



I'm not worried about popping a 40. I've had the stock 35 up to 43 or so PSI and the map sensor says that I'm hitting 37 with it now. (That's another story) My gauge only registers 34 with 36 peaks.



HECK, what was I thinking. I've got the 12. 25 clutch and Peter will shoot me if he catches me towing with the box cranked up.



So the UFM becomes a defueler when I tow heavy and maybe I won't burn things up running empty.



Speaking of--I thought I had a Mustang to play with the other day, but he refused and then I realized it wasn't a V8 and felt bad about picking on the poor feller. :-laf

 

[BushWakr - RIP]

strick-9,



Chris, good catch..... you're right on the money. .

He had the '40 on for a while. . then the engine went in with the HX50 and the '40 got stuck back on the shelf again.

Nascar Mark pulled it out for his dyno run on Fri. last. .





Bob.

 

[Reb.B]

hey Keith,

the 94 pro street dually was at MM 03. Its white, twins, stupid pump that i built, and some of Don's injectors with one of my trannies and Goerands converter. The motor was only a day old when i ran on the dyno. Didn't get to run at the track. I haven't yet cause i keep on snapping intermediate shafts, . . getting some built now.

 

[John_P]

Both my son and I are running Piers HX-40/16's are VERY

HAPPY with them!! The one on my son's truck has over

30,000 hard miles on it and mine has over 20,000 on it

with no problems AT ALL!! I am right at 500 H. P. with my

96' 12 valve and my son is right there too. I realize the

"older" HX-40's had a bad reputation (many blew up) but

Piers has done an excellent job on with his modifications

to his HX-40's and IMO if you follow his instructions on

where to set the boost his HX-40 turbo is one of the best

turbos on the market!! I had tried both B-1's (regular and

KS housing) on my 96' 12 valve and the bottom-end "lag"

with both of those was terrible, especially when towing.



----------

John_P

 

[KLockliear]

Originally posted by Reb. B

hey Keith,

the 94 pro street dually was at MM 03. Its white, twins, stupid pump that i built, and some of Don's injectors with one of my trannies and Goerands converter. The motor was only a day old when i ran on the dyno. Didn't get to run at the track. I haven't yet cause i keep on snapping intermediate shafts, . . getting some built now.

What kinda power did it make?



Intermediate shafts huh? That sucks. What brand are you using?

 

[DRAG DIESEL]

I will clarify MY experiance with MY hx-40... . it was all good for a long time... I had a ton of miles on it... I exploaded an intercooler clamp in Vegas at May Madness... oversped the trubo... . 200miles later the turbo takes a crap... it was a great turbo until that point... waste gate was set to open at 27psi it would climb to 45 psi on a daily basis.



Now Pius gets the turbo... rebuilds it... does his "lights out" ballancing... then... I put it on the truck... OMG!!! This thing spools WAY faster than my HX-35 with the 12cm housing... . I take it to the track for some bracket racing... first run out with the new turbo... I launch... . it's FAST... i look over at the boost gauge... it's pegged at 60psi... . waste gate set to open at 20psi this time... . bang!... . some things can be ballanced TOO good.



The tollerance of turbo are very tight... and there is no one in the country that can ballance a turbo like Pius. A properly ballanced turbo will yield spectacular results... . if the parts in side are strong enough... in the case of the hx-40 they are not.

 

[KLockliear]

Who set the wastegate and through what procedure?

 

[DRAG DIESEL]

Pius does it all on the bench.

 

[TURBOs4LIFE]

I am very happy with my PDR-40! I have stage 7's with NOS and drive the crap out of it. Yes it may blow at any time but with 20,000 very hard miles thats enough proof for me that its a dang good turbo! Thats to say I have got my moneys worth!!!

 

[WadePatton]

OUCH, 60psi in a 40! Not going to do that. I'll be sure to keep the boost down where the turbo and I can stand it.



In my early days ignorance, instead of adjusting the wastegate to limit boost on my stock 35, I bored out the "boost elbow" with welding tip drills. I was getting mid 40's boost before and now get mid 30's, and haven't touched the gate.

 

[DRAG DIESEL]

Originally posted by WadePatton

OUCH, 60psi in a 40! Not going to do that. I'll be sure to keep the boost down where the turbo and I can stand it.

I didn't have a choice in these boost levels. The 40 is only wastegated on the 4,5,6... . 1,2,3 never get wasted. In my case I have so much fueling the wastegate might as well not be there.