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Forum: projects & restorations 01-23-2020, 07:53 PM
Replies: 921
Views: 250,934
Posted By Duder
In terms of turbine performance you will still...

In terms of turbine performance you will still get some pulse effect due to the 1-4 separation from 2-3. It won't be ideal with unequal lengths as the pulses will reach the turbine wheel inducer at...
Forum: maintenance & nonperformance 01-17-2020, 06:31 PM
Replies: 4
Views: 251
Posted By Duder
Thanks for the reply Gary. I may still have the...

Thanks for the reply Gary. I may still have the old OE box somewhere; sounds like at least one endorsement for cleaning it out and running it.
Forum: maintenance & nonperformance 01-17-2020, 06:18 PM
Replies: 4
Views: 251
Posted By Duder
B230FT oil separator box failure

Engine is a 1994 B230FT, residing in my '81 242 DL.

Oil separator box blew its top and is of course puking oil all over the left side of my engine. This was a new aftermarket part from ipd, and...
Forum: projects & restorations 01-11-2020, 09:11 PM
Replies: 1,500
Views: 368,669
Posted By Duder
Man, I was just looking at cheap 6-cylinder E39...

Man, I was just looking at cheap 6-cylinder E39 wagons the other day...I need to sell my Roadmaster and get something more like that. Nice score and good luck with the repairs.
Forum: projects & restorations 01-10-2020, 08:51 PM
Replies: 921
Views: 250,934
Posted By Duder
I want to build some weld-el manifolds soon too,...

I want to build some weld-el manifolds soon too, so I'll follow along with interest...
Forum: projects & restorations 01-10-2020, 03:09 PM
Replies: 921
Views: 250,934
Posted By Duder
All good points; DTM target life is only 6,000 km...

All good points; DTM target life is only 6,000 km (~3700 miles). I'd just add that the DTM constructors are now designing engines to last for a full season. The ITR has a complicated formula for...
Forum: projects & restorations 01-10-2020, 03:01 PM
Replies: 921
Views: 250,934
Posted By Duder
It does make sense! Good deal man. Having equal...

It does make sense! Good deal man. Having equal pulse timing is key for transient response; as the pulses impinge on the wheel you get a much higher apparent turbine efficiency with those "staccato"...
Forum: projects & restorations 01-09-2020, 08:33 PM
Replies: 921
Views: 250,934
Posted By Duder
It's mostly the latter. The physics don't change...

It's mostly the latter. The physics don't change just because air density, flow, and pressure are higher. Forced induction will more than make up for deficiencies elsewhere though if your goal isn't...
Forum: projects & restorations 01-08-2020, 03:24 PM
Replies: 921
Views: 250,934
Posted By Duder
Sweet, sounds like you have it under control....

Sweet, sounds like you have it under control. Guess I didn't realize that you had done curved runners on the 8v manifold but I see that now. I've been playing with runner length calculators which is...
Forum: projects & restorations 01-08-2020, 03:21 AM
Replies: 921
Views: 250,934
Posted By Duder
Cool. Well at least you have something to reverse...

Cool. Well at least you have something to reverse engineer now, on the bright side.

Is there any room to do curved runners and move the plenum upwards, keeping it closer to the head but living...
Forum: projects & restorations 01-06-2020, 01:50 PM
Replies: 921
Views: 250,934
Posted By Duder
I missed the bit about the Cosworth manifold....

I missed the bit about the Cosworth manifold. Which engine is it from, a YB? Sierra or Escort?

Curious what the goal is with adapting it to the 16V Redblock. What does it offer, other than not...
Forum: projects & restorations 01-02-2020, 02:04 PM
Replies: 61
Views: 4,179
Posted By Duder
Looks like fun to me! Cool that it has a Power...

Looks like fun to me! Cool that it has a Power Lock already, but arguably you may not even need it anyway, if both rear tires stay on the ground at all times. An ARB air locker would be sweet though...
Forum: article composition 01-02-2020, 01:34 AM
Replies: 508
Views: 286,603
Posted By Duder
My initial reaction is: it sounds like a short....

My initial reaction is: it sounds like a short. Have you checked for shorts with a continuity tester or multimeter?
Forum: article composition 12-28-2019, 05:28 PM
Replies: 508
Views: 286,603
Posted By Duder
You can scope the 1-4 and 2-3 output signals from...

You can scope the 1-4 and 2-3 output signals from the wasted spark board, into the igniter module. If you see a signal there at 2x engine speed frequency on both channels while cranking, then the WS...
Forum: performance & modifications 12-19-2019, 05:11 PM
Replies: 18
Views: 1,179
Posted By Duder
I'm not seeing anything here I can help with...

I'm not seeing anything here I can help with explicitly. OP asked for "spool characteristics from anyone who has tried a variation of these wheels/ housings" so I'll sit this one out for now.
...
Forum: projects & restorations 12-19-2019, 02:40 PM
Replies: 402
Views: 160,717
Posted By Duder
I'm personally offended, because I was into 240s...

I'm personally offended, because I was into 240s before they were cool. :cameron:

But I don't self-identify as a hipster - this is now a full-blown existential crisis. I don't even have a beard....
Forum: projects & restorations 12-16-2019, 12:43 AM
Replies: 402
Views: 160,717
Posted By Duder
Can confirm http://i.imgur.com/B8mso0ol.png...

Can confirm

http://i.imgur.com/B8mso0ol.png (https://imgur.com/B8mso0o)
Forum: maintenance & nonperformance 12-13-2019, 02:44 PM
Replies: 62
Views: 3,095
Posted By Duder
I'm keeping the Commandos completely stock on my...

I'm keeping the Commandos completely stock on my '75 for this exact reason. On an '81 or '82 I think the skinnies fit the overall style of the car better though. It's all down to personal preference...
Forum: maintenance & nonperformance 12-13-2019, 02:34 PM
Replies: 62
Views: 3,095
Posted By Duder
Seconded. This is exactly my conclusion as well,...

Seconded. This is exactly my conclusion as well, after doing the same conversion. It's very simple if you can locate the parts from an '83 - '85 car.

I measured about 16 lb difference between...
Forum: projects & restorations 12-12-2019, 08:40 PM
Replies: 37
Views: 7,476
Posted By Duder
Tumescence :omg:

Tumescence :omg:
Forum: maintenance & nonperformance 12-11-2019, 03:58 PM
Replies: 62
Views: 3,095
Posted By Duder
I think John242Ti has provided the best feedback...

I think John242Ti has provided the best feedback so far. Get a Commando-specific chin spoiler, or a GT air dam. Maybe get it painted to match your car's body color. Make sure everything is aligned...
Forum: maintenance & nonperformance 12-10-2019, 12:57 AM
Replies: 62
Views: 3,095
Posted By Duder
...or maybe the shocks from an '83 - '85 "skinny...

...or maybe the shocks from an '83 - '85 "skinny bumper" car would work. IIRC they are shorter overall, but I'm sure someone else can correct me if I'm wrong.
Forum: maintenance & nonperformance 12-10-2019, 12:51 AM
Replies: 62
Views: 3,095
Posted By Duder
You could cut and re-weld the bolted flange...

You could cut and re-weld the bolted flange further out on the outer body of the bumper shocks, which would sink the shocks in deeper and tuck the bumper. But then you'd need to move the long...
Forum: showroom 12-08-2019, 07:16 PM
Replies: 975
Views: 504,909
Posted By Duder
I think you guys missed these: ...

I think you guys missed these:

https://i.pinimg.com/originals/26/a4/bf/26a4bff675e0daceccd0b94a06dc1661.jpg

https://live.staticflickr.com/4555/24599467538_9f6da58b1d_b.jpg
Forum: projects & restorations 12-06-2019, 03:51 PM
Replies: 259
Views: 64,285
Posted By Duder
Oh, and what I mean by doing "a bunch of work now...

Oh, and what I mean by doing "a bunch of work now to list it" - fix anything that's quick and easy to address. Tidy up loose ends that are obvious from photos. Detail the car as much as reasonably...
Forum: projects & restorations 12-06-2019, 03:47 PM
Replies: 259
Views: 64,285
Posted By Duder
Seems like you've been quick to jump from project...

Seems like you've been quick to jump from project to project, but I don't know you personally - maybe that's just how it appears on the internet. My advice would be to stick with this car if you...
Forum: projects & restorations 12-03-2019, 08:48 PM
Replies: 37
Views: 7,476
Posted By Duder
The Smurf has come so far! Great notes on...

The Smurf has come so far!

Great notes on locating the axle brackets and on your long travel setup. I'm now leaning heavily this direction for my '75 wagon. The big decision left to make is...
Forum: projects & restorations 11-22-2019, 03:34 AM
Replies: 71
Views: 10,816
Posted By Duder
Rock on. Should be exciting to see it all in one...

Rock on. Should be exciting to see it all in one color soon.

What are you using for paint - a modern single-stage urethane or some other system?
Forum: performance & modifications 11-14-2019, 01:46 PM
Replies: 86
Views: 5,958
Posted By Duder
0.42 A/R and M24 are specific only to the housing...

0.42 A/R and M24 are specific only to the housing that they are cast into, and don't pertain to the turbo as a whole.

A/R is a design attribute and every housing has a value for this, and they are...
Forum: projects & restorations 11-13-2019, 11:27 PM
Replies: 617
Views: 219,780
Posted By Duder
That's a great question! I like to think of...

That's a great question!

I like to think of it as A) because it fits the car so well. The answer is I really don't know.

If you look back at the earlier photos in this thread you'll see the car...
Forum: performance & modifications 11-13-2019, 07:33 PM
Replies: 28
Views: 2,117
Posted By Duder
Throat width is represented by the little yellow...

Throat width is represented by the little yellow line I drew in the turbine here...it's a twin-scroll but same idea, just ignore the divider wall.

https://i.imgur.com/S7H49AXl.jpg

And then a...
Forum: performance & modifications 11-13-2019, 06:53 PM
Replies: 28
Views: 2,117
Posted By Duder
I'm not an aerodynamic expert, but essentially it...

I'm not an aerodynamic expert, but essentially it is un-shrouding the wheel a bit, and increasing the nozzle flow area which will slow down the gas velocity.

The nozzle is the thin little ring...
Forum: projects & restorations 11-13-2019, 06:09 PM
Replies: 617
Views: 219,780
Posted By Duder
No problem. It's as much for my own sanity as...

No problem. It's as much for my own sanity as anyone else's; I like looking back at progress made in the past (and remembering that there's still a bunch left to do).

Eventually I'll migrate all...
Forum: projects & restorations 11-13-2019, 02:51 AM
Replies: 617
Views: 219,780
Posted By Duder
I went through and rid my thread of photobucket...

I went through and rid my thread of photobucket as much as possible, finally eradicating all the broken and/or fuzzy img links. Stupid predatory capitalist pigs!

The early photos should all be...
Forum: performance & modifications 11-12-2019, 08:26 PM
Replies: 28
Views: 2,117
Posted By Duder
That is a nice solution, especially for packaging...

That is a nice solution, especially for packaging an external gate with a stock style manifold.



To me this means that they chose the throat width to match the GT30 turbine wheel, so it'll be a...
Forum: performance & modifications 11-12-2019, 07:03 PM
Replies: 28
Views: 2,117
Posted By Duder
The as-cast port diameter is just under 25mm...

The as-cast port diameter is just under 25mm standard, and it's at 90 degrees to the flow. This housing dates back to the SR20DET and RB26DETT OEM applications so likely undersized for what you'll be...
Forum: performance & modifications 11-12-2019, 06:12 PM
Replies: 28
Views: 2,117
Posted By Duder
It may also be academic, but your engine will...

It may also be academic, but your engine will flow more than the choke flow curve from the turbine map, even after un-correcting back to physical flow. Any wastegated exhaust flow adds to the turbine...
Forum: performance & modifications 11-12-2019, 06:09 PM
Replies: 28
Views: 2,117
Posted By Duder
No worries. Radial turbines are fascinating and...

No worries. Radial turbines are fascinating and frustrating. They don't behave in an easy to grasp intuitive way...and to get that intuitive grasp you have to play around with the full maps...
Forum: performance & modifications 11-12-2019, 05:22 PM
Replies: 86
Views: 5,958
Posted By Duder
A 3582 is definitely overkill for 300-350whp, for...

A 3582 is definitely overkill for 300-350whp, for sure. It's more like a ~500-600whp turbo. But then again I'd argue that any Holset from a later 5.9L Cummins is also oversized...main difference is...
Forum: performance & modifications 11-12-2019, 05:14 PM
Replies: 28
Views: 2,117
Posted By Duder
I used this GT/GTX30R turbine flow chart as a...

I used this GT/GTX30R turbine flow chart as a reference for your T3:

https://i.imgur.com/ECwghKZl.jpg


And here's the GT/GTX28R:

https://i.imgur.com/fHTGWO2l.jpg
Forum: performance & modifications 11-12-2019, 05:07 PM
Replies: 28
Views: 2,117
Posted By Duder
That turbine housing won't fit on a GT28R or...

That turbine housing won't fit on a GT28R or GTX28R though. Different turbine wheel and shroud contour machining.



You can use the choke flow curves that are published for each wheel/housing...
Forum: projects & restorations 11-12-2019, 03:24 PM
Replies: 125
Views: 13,004
Posted By Duder
This is probably the nicest looking 145 I've ever...

This is probably the nicest looking 145 I've ever seen. That color really flatters the car. Good luck getting it roadworthy - keep posting here and don't get discouraged!
Forum: performance & modifications 11-12-2019, 03:14 PM
Replies: 28
Views: 2,117
Posted By Duder
"Drive pressure" is a misnomer from the diesel...

"Drive pressure" is a misnomer from the diesel truck world - it's not the pressure that drives the turbine, it's momentum transfer from the exhaust gas molecules physically hitting the turbine...
Forum: performance & modifications 11-12-2019, 03:08 PM
Replies: 86
Views: 5,958
Posted By Duder
HE351 and GT3582R are pretty close in terms of...

HE351 and GT3582R are pretty close in terms of wheel diameters, for the record. The Holset has a larger compressor but the Garrett has a larger turbine.

Compressor
HE351CW: 86mm exducer
GT3582R:...
Forum: performance & modifications 11-12-2019, 02:16 PM
Replies: 28
Views: 2,117
Posted By Duder
Good advice here. The T25 style OE Garrett...

Good advice here. The T25 style OE Garrett turbine housings are a better match aerodynamically to the GT28 turbine wheel. The ATP housing, while convenient on a Redblock, isn't optimal. I did some...
Forum: projects & restorations 11-08-2019, 03:17 PM
Replies: 14
Views: 2,793
Posted By Duder
Do you have a bolt supply house or well-stocked...

Do you have a bolt supply house or well-stocked hardware store somewhere in driving distance? I find that's the most cost effective way to get a bunch of hardware quickly for a project. Get a set of...
Forum: article composition 11-02-2019, 11:35 PM
Replies: 508
Views: 286,603
Posted By Duder
Have that beer, but then PM me your name &...

Have that beer, but then PM me your name & address and I'll send you a replacement board, on the house. I'll just ask you to cover shipping. Mistakes happen! :cheers:
Forum: projects & restorations 11-02-2019, 11:33 PM
Replies: 192
Views: 63,118
Posted By Duder
Awesome progress and trip reports. I'm jealous...

Awesome progress and trip reports. I'm jealous you got yours done so quickly. But happy to read that you're driving it and enjoying it.

The wheels have an almost gothic look to them on the 240,...
Forum: performance & modifications 10-30-2019, 06:03 PM
Replies: 13
Views: 2,851
Posted By Duder
Or you can run wasted spark and ditch the...

Or you can run wasted spark and ditch the distributor altogether :-D
Forum: projects & restorations 10-30-2019, 11:24 AM
Replies: 40
Views: 4,400
Posted By Duder
I'm sure you could get the later e-codes to fit,...

I'm sure you could get the later e-codes to fit, but the trim and mounting and side-to-side width will all be different and not look good with your hood, grille, or fenders.

The early "TV screen"...
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