Chevy and GMC Duramax Diesel Forum - Reply to Topic
04.5-05 LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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  Topic Review (Newest First)
08-06-2019 10:17 PM
AxysAssault
Quote:
Originally Posted by MarvDmax04.5 View Post
Echo Echo ,, Echo Echo (<grins>

Just be careful in how much air pressure and how hard you jam the wand around in there. Those fins are bent pretty easily. Folding too many fins over is just as bad as, or actually probably worse than the gunk that builds up in the core.
Don't worry. This is all in preparation for the first haul through the mountains with my new HGs and head swap. I'll be gentle. Anything I can do to prevent a breakdown will make me less anxious haha. Just installed my egt probe this evening. [emoji869]
It's only a 7000lb camper, so should be a light test run. Turbo don't fail me now!! Haha


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08-05-2019 11:11 AM
MarvDmax04.5 Echo Echo ,, Echo Echo (<grins>
Just be careful in how much air pressure and how hard you jam the wand around in there. Those fins are bent pretty easily. Folding too many fins over is just as bad as, or actually probably worse than the gunk that builds up in the core.
08-05-2019 10:57 AM
Hook'em_Horns!
Quote:
Pretty much a waste of time trying to blow it out.
Not so much.
It's easier to blow dirt than wash mud. Blowgun 1st, then water rinse, then Simple Green...let soak, but don't let it dry.
Then rinse/flush with water. Sometimes, it takes a soft bristle brush to remove the crust from years of neglect.

I like to finish up with air again, via the leaf blower.
08-05-2019 10:57 AM
Hook'em_Horns!
Quote:
Pretty much a waste of time trying to blow it out.
Not so much.
It's easier to blow dirt than wash mud. Blowgun 1st, then water rinse, then Simple Green...let soak, but don't let it dry.
Then rinse/flush with water.

I like to finish up with air again, via the leaf blower.
08-05-2019 10:34 AM
AxysAssault
Quote:
Originally Posted by 77cruiser View Post
Pretty much a waste of time trying to blow it out. Had my radiator out tried blowing first, did nothing. Laid the radiator down flat soak it down with Purple cleaner & let it sit for about an hour. Then did the rinse lather repeat. Mine was plugged in the center probably about 1/4 the surface, right where you need the airflow for the fan to work.

My fan comes on now before the factory gauge hits 210.
Damn. Well. I guess I'll pull it out then. You get pretty quick at it after 3 times haha.

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08-05-2019 04:26 AM
77cruiser Pretty much a waste of time trying to blow it out. Had my radiator out tried blowing first, did nothing. Laid the radiator down flat soak it down with Purple cleaner & let it sit for about an hour. Then did the rinse lather repeat. Mine was plugged in the center probably about 1/4 the surface, right where you need the airflow for the fan to work.
My fan comes on now before the factory gauge hits 210.
08-04-2019 06:46 PM
AxysAssault Yea I popped the top shroud off today, then realized it's gonna take a bit more time than anticipated. I'm pretty sure my air wand will fit in between (it's like a 1/4" x 2ft nozzle), but the wash wand will most definitely not. I'll just blow it all out and hit the water from the back of the rad and hope for the best haha.

I should have done this properly when I had the motor on the floor for my head swap.....buuuut it was winter.....in Canada.



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08-04-2019 06:00 AM
TXLLY AxysAssault, I did blow mine out with a compressor from the back too. There was a ton of dust blowing out. There is absolutely no space between the radiator and IC to put any kind of wand in between. I managed to get the intercooler out without pulling the radiator, but I fear it took more time then it would have to just pull the radiator too.
08-03-2019 10:36 PM
AxysAssault
Quote:
Originally Posted by TXLLY View Post
i cleaned my cooling stack today. it took me about 3 hrs. My stack was not bad at all. I did not pull the radiator or drain it though. It was not easy to get the intercooler out and when I do it again next time i will drain and pull the radiator.
I'm gonna do mine tomorrow. I'm gonna blow em out with a long nozzle for my compressor, the use the wash wand I made to fit between the rads (hopefully).


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08-03-2019 02:42 PM
TXLLY i cleaned my cooling stack today. it took me about 3 hrs. My stack was not bad at all. I did not pull the radiator or drain it though. It was not easy to get the intercooler out and when I do it again next time i will drain and pull the radiator.
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