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Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision


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  #61  
Old 08-05-2016, 05:53:44 AM
JohnnyC JohnnyC is online now
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Quote:
Originally Posted by tracy t View Post
I feel your pain with the rust issues, I have a 1995 k2500 & a 1992 f250 frames to start sandblasting on this evening. Gonna be a busy couple days for me.
Good luck especially if those truck frames seen snow plowing and salt.

JohnnyC
New Jersey
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  #62  
Old 08-05-2016, 07:17:07 AM
Tracy T Tracy T is offline
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

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Good luck especially if those truck frames seen snow plowing and salt.

JohnnyC
New Jersey
Don't know if the 2500 has seen any plowing, but both have seen salt/ chloride. I think they use more road treatment agents down here than they use up your way!
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  #63  
Old 08-05-2016, 08:11:23 AM
Kevin K Kevin K is offline
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

I had a Ford Explorer that was killed by rust. I drove it to a friend's garage to use his lift. When we put it up in the air, he took one look and said "This has gotta go... NOW". We did the work, and before I left he said "Wait, I have to show you something". He put a Mercedes diesel car up on the lift, ten years older than my Explorer. He said "This car has had one owner, been driven every winter, all winter in this area. Show me the rust..." Except for maybe a little surface rust on a few parts, it looked almost new. Which goes to show, if they want to build a quality vehicle, they can. And Ford definitely doesn't.
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  #64  
Old 08-05-2016, 11:39:10 AM
Tracy T Tracy T is offline
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

The Ford is one owner and is twice as eat up but the bolts appear to be made of harder steel. Already found one spring hanger that is shot. Otherwise I think they both will pull thru just fine, another year or two left alone and both trucks would be ready for the junk pile! I can only imagine what a onan stuffed up under a RV goes thru especially if it rear mounted.
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  #65  
Old 08-05-2016, 09:32:51 PM
dependable dependable is offline
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Quote:
Originally Posted by tracy t View Post
I feel your pain with the rust issues, I have a 1995 k2500 & a 1992 f250 frames to start sandblasting on this evening. Gonna be a busy couple days for me.
Apologize for going even further off topic from Johnny's thread but..

Having spent much time & money trying to restore a few old trucks, I don't sand blast anymore. Started out on a 4x4 Studebaker, sand blasted & epoxy paint frame.. never did finish that one, which is a shame.. used up all my time & money trying to make it perfect.

Now days I pressure wash, scrape a bit and hit with rustolium rusty metal primer on rusty spots and spray on some rusotlium smoke grey, undersides, frames and dump bodies.

Goes fairly quickly, although a good job takes more than one day. At my age now, my work is still likely to outlive me, even if I take a few shortcuts.
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  #66  
Old 08-05-2016, 11:07:28 PM
JohnnyC JohnnyC is online now
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

With all the talk about rusted frames and what-not, I decided to preliminary clean up the original Walbro carburetor of dirt, grease, corrosion, and old paint to make it look good as seen in the pictures below. I ONLY cleaned up the exterior, but I will fully clean and rebuild the entire carburetor although it ran perfectly when I had it on the BFA during the decarbonization tests several months ago.

Once I open the inside of the carburetor, I will take pictures, but in the meantime I show the before and after pictures of the exterior cleanup.

JohnnyC
New Jersey
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  #67  
Old 08-05-2016, 11:24:05 PM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Looking good! I sure wish I had the skills and patients you have.
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Old 08-06-2016, 01:08:44 AM
len k len k is offline
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

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Originally Posted by dependable View Post
......scrape a bit and hit with rustolium rusty metal primer on rusty spots and spray on some rusotlium smoke grey, undersides, frames ......
Last tangent..
Thats what I did except it used black final paint. Lasted `~ 10 years before it started to peel in spots. Got a pressure pot and made my own spatter gun hose tip and stuck it inside frame too. 91 chevy caprice.

Roofing tar on underside works great if you get it before it rusts. Otherwise rust creeps behind it and it falls off after ~8-10 years. The 91 is only now starting to have a weak frame in spots.
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  #69  
Old 08-06-2016, 01:33:13 AM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Johnny.... Did your dishwasher do that?
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  #70  
Old 08-06-2016, 07:25:37 AM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

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Originally Posted by Vanman View Post
Johnny.... Did your dishwasher do that?
No, that sounds like a good idea.

Actually I used a fine wire wheel on a bench grinder. Only took 5 minutes. Let the truth be known that I wanted you all to think I dedicated my entire Friday evening slaving on the carburetor when this took only 5 minutes to do

JohnnyC
New Jersey

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Originally Posted by BRae View Post
Looking good! I sure wish I had the skills and patients you have.
No skills involved in doing this. A semi-trained chimp can do this. Read my posting above this one explaining how this was done.

JohnnyC
New Jersey
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  #71  
Old 08-06-2016, 09:22:26 PM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Quiz Time for all the smart guys and experts - Well, that excludes me because I'm only a smart azz --

Today I opened up the Walbro carburetor that I last posted about after cleaning the exterior. This is the original carburetor that came with the 4.0 BFA and ran perfectly, however I was surprised what I found inside it and the quiz is for the smart guys to figure out what it is as shown in the pictures below for which I will explain:

Picture #1) This picture shows the entire Walbro almost fully disassembled. Circled in RED is what I dumped out of it. Most of it was found around the float needle valve and in the float bowl area. I have a nickel to the right of the crap I dumped out to show the amount in comparison to the size of the nickel. By the way, I did NOT have to scrape this stuff out, it poured out like salt.

Picture #2) This picture is a close up of some of the junk found around the float needle valve area. Not pictured is the crap in the float bowl area.

Picture #3) Study this picture very closely and can you smart guys tell me what this crap is (I think I know, but do YOU know)?

The first person that gets it right will win the grand prize of

JohnnyC
New Jersey
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  #72  
Old 08-06-2016, 09:37:15 PM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Last pic looks like sand , but can't see sand making it past valve. Looking at similar colored corrosion on aluminum carb casting I have to guess it's corrosion of the aluminum? casting.
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Old 08-06-2016, 09:44:08 PM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Is that stuff the byproduct of bulls4!t ethanol gasoline destroying aluminum??
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  #74  
Old 08-06-2016, 10:04:26 PM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Both very good answers, but I will post a follow up on Sunday to allow others to post what they think it is.

Just for thought, this was the carburetor I used during the decarbonizing tests several months ago which seen everything from water, ATF, grain alcohol, brake fluid and human piss and much more poured down the air horn ** BUT none of it would have gotten into the float bowl, right?
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Old 08-06-2016, 10:10:39 PM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

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BUT none of it would have gotten into the float bowl, right?
Well, unless it happened to get poured down the bowl vent inside the air horn?
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  #76  
Old 08-06-2016, 10:17:06 PM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Might want to install an inline filter just before carb inlet.
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  #77  
Old 08-07-2016, 12:56:26 AM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Was it kidney stones from all the piss you dumped thru it? LOL...
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Old 08-07-2016, 01:19:23 AM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Sand and maybe a little rust. Bob
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Old 08-07-2016, 01:36:16 AM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

Damn son what have you been drinking ifn your pee has them kinda rocks in it ?
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Old 08-07-2016, 09:59:23 AM
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Default Re: Sacrificial Onan 4.0 BFA - A JohnnyC Executive Decision

The Answer to the Quiz

The crap that came out of the Walbro carburetor is most likely the byproduct of bulls4!t ethanol gasoline as Vanman stated (the winner).

If you do Google searches on "ethanol destruction of aluminum" and look at the pictures, it will match the crap in my pictures.

Although this crap looks exactly like sand which was my first thought, but was totally puzzled how it got into the float bowl, upon picking it up with my fingers and rubbing my fingers together, this sandy looking crap instantly turned into fine dust. Sand will not do this.

As seen in the picture below, on the left side I show the crap on my finger tips as if it was sand and on the right side of the picture much of it is fine dust after quickly rubbing my fingers together.

So, in conclusion, this is a perfect example of what ethanol gasoline will do to your fuel system and our bright / intelligent government wants to add more ethanol to our gasoline. What a marvel idea!!!


JohnnyC
New Jersey
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