HX55 too big for a 6.2 GM Diesel?

[turbovanman²]

The stock turbo for the 6.5, Borg Warner makes them, are good for 10 psi of boost without internal mods, so would this be ok? How about a H1C model?

This is for my 6.2 Diesel van with headers and a nice 2.5 inch mandrel y-pipe to a 3 inch mandrel exhaust. Will be going to a remove mount setup.

Ok, checked out the turbo calculator and I am so out. Used an HX40 for sh*ts and giggles, way out.

http://www.squirrelpf.com/turbocalc/graph.php?version=4&pr0=1&pr1=1.07&pr2=0.53&pr3=0&pr4=0&pr5=0&pr6=0&pr7=0&airflow0=7.4&airflow1=8&airflow2=5&airflow3=0&airflow4=0&airflow5=0&airflow6=0&airflow7=0&product_id=125

[Aries_Turbo]

i dunno simon. what is the original engine a HX55 comes on?

just for kicks, put in the cummins 5.9L info and look at the stock hx35 and h1c and how the line falls. i assume that you are remembering that the rpms are killer low and that the hp wont be really high. keep lowering the hp till the boost says 10psi.

Brian

[turbovanman²]

i dunno simon. what is the original engine a HX55 comes on?

just for kicks, put in the cummins 5.9L info and look at the stock hx35 and h1c and how the line falls. i assume that you are remembering that the rpms are killer low and that the hp wont be really high. keep lowering the hp till the boost says 10psi.

Brian

I have no idea on the Cummins info and what turbo the 55 came off.

I filled out the turbo info as best as possible, the 6.2's flow around 400cfm so I'm told, max rpm of about 3000. The BW turbo's can put out 17 or so psi but the stock 6.2 is safe to 10 psi and puts out around 250 hp.

[Aries_Turbo]

I have no idea on the Cummins info and what turbo the 55 came off.

I filled out the turbo info as best as possible, the 6.2's flow around 400cfm so I'm told, max rpm of about 3000. The BW turbo's can put out 17 or so psi but the stock 6.2 is safe to 10 psi and puts out around 250 hp.

cummins is a 5.9L motor that probably revs less than 4000rpms. thats the info i was talking about to input into the turbo calc and choose a hx35 and see where the line falls to compare.

Brian

[moparzrule]

The cummins doesn't rev more than 3000 RPM unless a lot of mods are done.

An HX55 comes on tractor trailer truck engines that are atleast 12 liters. Too large for your project simon!

H1C would be a good turbo for you to use. H1C's are non-wastegated though, but do I remember you saying you are going to use an external gate? Even still, watch out what housing you get with the H1C, with the 21cm housing the turbo will only make 12-15 PSI boost without any wastegate at all, that might be all you want but it will also spool like a turd.

IMO just try and fine a straight HX35, should be fine for what you need.

[turbovanman²]

Wow, late response, lol.

I want internal wastegate, less fabbing. Guess I'll keep an eye out for a stocker or HX35.

Mine probably revs a tad more but we only really spin them to 2600 rpm.

[moparzrule]

LOL, oops, didn't even notice the date!

But yeah regular old HX35 should be sweet. Internal gate, nice size turbine thats not too large but not too small to choke it out, and nice size compressor that will flow enough for about 300 RWHP or 350 at the crank. My ram had 325 RWHP with the stock HX35 and EGT's were a tad high....but my HX35 that I put on was a california emission turbo which means 54mm inducer instead of the regular 56mm. Find one from a 95-99 truck and it should also have the V band outlet which is easier to work with.

[black86glhs]

Besides, we all already talked about another turbo on your 6.2, Simon. The thread where almost everyone was saying the Cummins motor is so much better than the 6.2. Yes it is, but that isn't what you were asking about. Remember?

[bakes]

Simon twin mistu's just hang one off each manifold .

i have a 92 5.9 non IC for sale (deal pending but i haven't seen the $ yet ) but i know 3 others for sale

[turbovanman²]

Besides, we all already talked about another turbo on your 6.2, Simon. The thread where almost everyone was saying the Cummins motor is so much better than the 6.2. Yes it is, but that isn't what you were asking about. Remember?

I honestly don't, :(



Simon twin mistu's just hang one off each manifold .

i have a 92 5.9 non IC for sale (deal pending but i haven't seen the $ yet ) but i know 3 others for sale


Hahaha, too true. I actually like my 6.2, with a turbo, they scoot quite nicely. Theres no way I want to swap in a Cummins, ;)

[black86glhs]

Here is a reminder.
http://www.turbo-mopar.com/forums/showthread.php?t=20727&highlight=diesel

[turbovanman²]

Here is a reminder.
http://www.turbo-mopar.com/forums/showthread.php?t=20727&highlight=diesel

Huh? :confused:

[black86glhs]

:banghead::banghead:Look at post #8 of this thread. Then reread post #11 and the light should come on.

[turbovanman²]

:banghead::banghead:Look at post #8 of this thread. Then reread post #11 and the light should come on.

That thread you list has no links or comments about the Cummins motor???

What am I missing?

[black86glhs]

Hmmmmmm. Apparently you aren't missing anything, I am. Wrong thread on my part. I'll look for the right one, sorry.

[black86glhs]

Nevermind. I must have had a brain aneurysm and went into a coma or something. I could swear it happened, must have been in my world.:confused2::confused2:
On with the show.:thumb:

[moparzrule]

Hahaha, too true. I actually like my 6.2, with a turbo, they scoot quite nicely. Theres no way I want to swap in a Cummins, ;)

What kind of fuel mileage are you getting?


The twin mitsu's would be HORRIBLY small, we are talking about 3.1L feeding each turbo here, so even twin T2 garrett's would be too small.

[turbovanman²]

What kind of fuel mileage are you getting?


The twin mitsu's would be HORRIBLY small, we are talking about 3.1L feeding each turbo here, so even twin T2 garrett's would be too small.

I would never do the twin mitsu's, he put it up for a joke, ;)

I was averaging 17-19 mpg combined, towing my trailer, 14 or so. I did some trips to Seattle and got 23 ish mpg, :nod:

[Aries_Turbo]

t2 turbos would be good for a 6.2L spinning at 3k-ish rpm.

Brian

[moparzrule]

t2 turbos would be good for a 6.2L spinning at 3k-ish rpm.

Brian

Diesel is a whole different ball game. They put out a lot more exhaust and spin the turbo a lot faster than with gas engines.

[moparzrule]

I would never do the twin mitsu's, he put it up for a joke, ;)

I was averaging 17-19 mpg combined, towing my trailer, 14 or so. I did some trips to Seattle and got 23 ish mpg, :nod:

Thats about what I got with my Ram, though I had a very heavy foot and was adding lots of fuel cuz I had twice the stock power. Averaged 17-19 combined, but I did get a high of 25 all highway. But my truck was just a regular cab, but it is a 4X4 so it does take a hit there. The 2WD guys average about 2 MPG better.

[Aries_Turbo]

Diesel is a whole different ball game. They put out a lot more exhaust and spin the turbo a lot faster than with gas engines.

big wastegates then :)

Brian

[moparzrule]

big wastegates then :)

Brian

LOL, I suppose that would work. Hella fast spoolup for sure!

He said he wanted an internal gate for simplistic's sake though.

[turbovanman²]

Thats about what I got with my Ram, though I had a very heavy foot and was adding lots of fuel cuz I had twice the stock power. Averaged 17-19 combined, but I did get a high of 25 all highway. But my truck was just a regular cab, but it is a 4X4 so it does take a hit there. The 2WD guys average about 2 MPG better.

Mine isn't bad for old school technology and a another brick front end, :p

[bakes]

i worked on two 6.2l with a single T03 48 trim on them worked good for the time (both in the wreakers now) and i was not joking about the twin mitsu i have seen it done 10 years ago at BCIT in a subhuman . remember 6.2 is not a HP motor the 6.5 was better for turboing

[turbovanman²]

Ball bearing, its local and he is selling it cheap! :thumb: He has the RHF-5.

http://www.ihi-turbo.com/turbo_RHE-RHF.htm

[moparzrule]

Have you seen it? Sounds like it's a small turbo....weighs 7.1 pounds and from what I gather from the charts it's recommended for 54 to 154 horsepower diesel engines ranging from 2.0 to 6.0 liter.

I think the 6.2 has 150 HP stock right? Didn't you say you already have like 180 or 200 ish from turning the pump up and such?
I'd say the RHF5 is just a little too small for what you need. Even the RHF55 is a hair too small, it's for up to 200 HP and you should be doing well over that with turbo if you have 180 now. If he had the RHF6 than I'd probably say go for it.

[turbovanman²]

Have you seen it? Sounds like it's a small turbo....weighs 7.1 pounds and from what I gather from the charts it's recommended for 54 to 154 horsepower diesel engines ranging from 2.0 to 6.0 liter.

I think the 6.2 has 150 HP stock right? Didn't you say you already have like 180 or 200 ish from turning the pump up and such?
I'd say the RHF5 is just a little too small for what you need. Even the RHF55 is a hair too small, it's for up to 200 HP and you should be doing well over that with turbo if you have 180 now. If he had the RHF6 than I'd probably say go for it.

I probably have 160 hp, lol.

I thought it was a bit small but you guys are better at sizing off applications than me.

[moparzrule]

I've never seen an IHI turbo in person, let alone the RHF5. I'm just going by the charts!

I would stick with an HX35, you really can't go wrong there. It's good for anything from 140-300 horsepower.

Edit-You may even want to just go with an HY35 actually. Single volute 9cm housing, super fast spool and should be perfectly fine with the 220 HP or so you want to run.


Edit again- Just a thought here but what if you did like what Banks does with the sidewinder turbo kit with that RHF5, just run it off half the engine...4 cylinders.

[turbovanman²]

I've never seen an IHI turbo in person, let alone the RHF5. I'm just going by the charts!

I would stick with an HX35, you really can't go wrong there. It's good for anything from 140-300 horsepower.

Edit-You may even want to just go with an HY35 actually. Single volute 9cm housing, super fast spool and should be perfectly fine with the 220 HP or so you want to run.


Edit again- Just a thought here but what if you did like what Banks does with the sidewinder turbo kit with that RHF5, just run it off half the engine...4 cylinders.


Hy35? Ok.


Banks uses a crossover to connect both banks to the turbo, ;)

[ekimdam]

Or you could just buy my old truck and drop another 6.5 in it....

http://www.turbo-mopar.com/forums/showthread.php?t=31910

;)

[turbovanman²]

Or you could just buy my old truck and drop another 6.5 in it....

http://www.turbo-mopar.com/forums/showthread.php?t=31910

;)

Wow, nice list of upgrades, :nod: $2500 is a really good deal but alas, I love my van, ;)

[turbovanman²]

What about an HE351?

Or maybe an HE351ve with the vanes permantely shut or closed?

[dds78910]

What about an HE351?

Or maybe an HE351ve with the vanes permantely shut or closed?

Not positive but I think its similar to the HY but it has a sensor in th compressor side to monitor boost so it can contol the wastegate.

[moparzrule]

HE351 is basically the same as a HY35 except they have a 4'' V band turbine outlet. The 01-02' HY35's have a 2.5'' elbow outlet. The 03' HY35 has a 3.5'' V band, and in 04' the HY35 had the same 4'' V band but then they switched to the HE351 in 05' (some early build 04's might have the HY35).

[turbovanman²]

I wonder how the HE351 vnt's would work with the vanes locked almost closed??????? They go for cheap as no one wants them.

[moparzrule]

How would you ''lock'' them?

[turbovanman²]

How would you ''lock'' them?

Just need to weld the ring or ? so they can't move.

[moparzrule]

And once you weld it, what if it's the wrong spot? What if full open makes it spool like a slug, but full closed gives you way too much boost...so if you compromise and make it halfway, you still have no idea if it's going to be one or the other.
IMO, too large of a gamble and not worth it. In order to make a non-wastegated turbo not put out too much boost you have to have a large turbine which means it will spool slowly.

[black86glhs]

WHy not make an adjuster for it? Rig up a choke cable or a rheostat to adjust it however you want? It you want it controlled by a computer, don't ask me. I'm providing cheap alternatives.:thumb:

[turbovanman²]

Is the HE351VE the same specs as the regular version?

I guess you could simply make a rheostat to control it, then once you figure out where to put the vanes, set it and forget it.

[moparzrule]

In order to set the vanes at a point where you want your max boost to be, the spoolup will be crap. And vice versa, if you set spool where you want it to be the boost will be way to high. You will waste your time and money with a VGT

[turbovanman²]

In order to set the vanes at a point where you want your max boost to be, the spoolup will be crap. And vice versa, if you set spool where you want it to be the boost will be way to high. You will waste your time and money with a VGT

Hmmmmmm, forgot thats how they control the boost, unless you use an external wastegate or fit a SV setup, like the HE351.

[black86glhs]

You could use pressure sensors to control it. Have it like a staged setup. When it hits a certain pressure, it causes the vanes to open some or to pop open a SV to control pressure. Very similar to machine controls at a plant.

[moparzrule]

External wastegate would work OK I would think, but thats a decently large investment plus the extra work to do it. Just pay a few more $ and get a regular HE351.

[black86glhs]

External wastegate would work OK I would think, but thats a decently large investment plus the extra work to do it. Just pay a few more $ and get a regular HE351.Good point. It starts getting expensive real quick coming up with these ideas...lol.:nod:

[turbovanman²]

All good points. Well I guess if I get one for $50, then its worth a try, ;)