Superhondaz50
Active member
- 108
- 66
- 28
- Location
- Fort Mohave, AZ
Continued
Last edited:
Steel Soldiers now has a few new forums, read more about it at: New Munitions Forums!
You got your heater on in Arizona???Got my NOS Motorola alt tach hooked up.
My super-low compression 1987 6.2 would explode at every seam with that kind of pressure. Glad you diagnosed it. Sorry to hear of blown seals, but it's part of the process. It is very interesting following this thread and I'll join those who thank you for sharing this. (Fun side note, I have little to no obvious blow by, but boy is she tired.)Gonna add a note, so the CDR connects in two places, to the intake mani, and to the oil fill tube. This is fine in a NA setup as the Mani is pulling a vacuum on the CDR. With a turbo, the intake is pressurized, so with the CDR installed, the pressure shoots right into the CDR and into the oil fill tube and case, kinda turns itself into a wastegate. So to make it work, you need to disconnect it from the intake mani, plug the Mani, then hook the disconnected part into the piping BETWEEN the air filter and turbo inlet, this will keep a vacuum on it, and allow your case to vent, without blowing seals from your boost.
And another snippet, some CDR valves are water fording ones, so they have two extra barbs for that. Mine is this type, I will be using a new standard CDR and plugging the fording lines, no water in the desert to ford anyways haha
YepMy super-low compression 1987 6.2 would explode at every seam with that kind of pressure. Glad you diagnosed it. Sorry to hear of blown seals, but it's part of the process. It is very interesting following this thread and I'll join those who thank you for sharing this. (Fun side note, I have little to no obvious blow by, but boy is she tired.)
Bulldogger
Nice! Ya, if this motor quits on me I want to do something different, LS is pretty straight forward, ideal would be a Cummins.Guy near me has a 6.2, appears in good shape, he wants just $500 for. But that's a ways from AZ for an unguaranteed motor. I decided to source a whole powertrain instead. Thought hard about the 6.2, as it would drop right in, but opted for MORE POWER!
BDGR
I hear ya.Nice! Ya, if this motor quits on me I want to do something different, LS is pretty straight forward, ideal would be a Cummins.
I would agree. I'm prob gonna leave this right now, at least till fall, I have the option of getting a pedestal that'll hook up to my up pipes that'll fit pretty much any turbo, specifically a HX off a Cummins.Great effort, but I think your main problem is the turbo itself. For what it's worth, the GM-4 turbo GM used on the 6.5 had 51mm inducer on the compressor side. And a exhaust side with a 51mm exducer. The Duramax turbo has a 60mm/61mm respectively. It's a lot more turbo than what the 6.2 would need.
Saab used to use tiny Mitsubishi turbos In the 1980’s in the old version Saab 900 turbos. I wonder if that would spoil up faster.I would agree. I'm prob gonna leave this right now, at least till fall, I have the option of getting a pedestal that'll hook up to my up pipes that'll fit pretty much any turbo, specifically a HX off a Cummins.
Ya, this engine is on its way out I think. If it goes kaboom I'd really love to LS swap this thing.
That'd be awesome, those LS engines hold up to boost well tooI've been toying with the idea of a 6.0 4L80E setup with a 76mm turbo.
Should give it a good kick in the ass.
So, large turbos work on gasoline engines because they push 6000RPM, gasoline is only 15% efficient so it makes more exhaust, and therefore they flow a lot of air.I've been toying with the idea of a 6.0 4L80E setup with a 76mm turbo.
Should give it a good kick in the ass.
Makes complete sense. That 6.2 is redlined at 3k, I've only had it up to 2500 at 7psi, so at 3k I'd prob be pushing 10psi, just with a ton of lag. I'm gonna finish up my doghouse, then this winter prob convert it over to a HX35 sitting on a d-max T4 pedestal for better spooling.So, large turbos work on gasoline engines because they push 6000RPM, gasoline is only 15% efficient so it makes more exhaust, and therefore they flow a lot of air.
Diesel engines turn lower RPM's, don't flow as much air, and Diesel fuel is about 40% efficient, so there is less exhaust airflow. Smaller cartridges that spool up faster with less exhaust volume are better, unless you're running a 4 engine setup at a tractor pull.
IMHO
I understand that. I'm talking about a 6.0 LS with a 76So, large turbos work on gasoline engines because they push 6000RPM, gasoline is only 15% efficient so it makes more exhaust, and therefore they flow a lot of air.
Diesel engines turn lower RPM's, don't flow as much air, and Diesel fuel is about 40% efficient, so there is less exhaust airflow. Smaller cartridges that spool up faster with less exhaust volume are better, unless you're running a 4 engine setup at a tractor pull.
IMHO
We get it, advertisements are annoying!
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website like our supporting vendors. Their ads help keep Steel Soldiers going. Please consider disabling your ad blockers for the site. Thanks!