1997 Sketchy SleepyDad build

[SilverRidgeRunner1]

With the technology coming along really well I wonder how spray foam would do to seal the frame up completely. I know the stuff is air tight and keep water out really well and it wouldn't take much to seal everything quick any thoughts.

 

[MN4runnerman]

With the technology coming along really well I wonder how spray foam would do to seal the frame up completely. I know the stuff is air tight and keep water out really well and it wouldn't take much to seal everything quick any thoughts.

Are you joking?

 

[SilverRidgeRunner1]

Are you joking?

No actually I was reading up on the subject with a few other site that indicated it worked well for rust prevention inside the frame rails.

 

[MN4runnerman]

No actually I was reading up on the subject with a few other site that indicated it worked well for rust prevention inside the frame rails.

Can you post a link? I’d like to read what they say. In all my experience spray foam absorbs and holds water. During the winter that would be some combo of dirty salty water. So no I don’t think that is a good idea at all tbh. I’ve seen body chop shops use spray foam to fill or hide a hole in a frame then paint to match and sell it as a clean frame car. I’ve also seen them do it to fill behind rust spots/holes before using bondo. The rust always gets worse and the foam does nothing to prevent it.

 

[phattyduck]

Can you post a link? I’d like to read what they say. In all my experience spray foam absorbs and holds water. During the winter that would be some combo of dirty salty water. So no I don’t think that is a good idea at all tbh. I’ve seen body chop shops use spray foam to fill or hide a hole in a frame then paint to match and sell it as a clean frame car. I’ve also seen them do it to fill behind rust spots/holes before using bondo. The rust always gets worse and the foam does nothing to prevent it.

Closed vs. open cell foam.

That said, I still wouldn't use it in a place where it is regularly exposed to the elements. High-density closed-cell foam has been used in unibody vehicles for strength and vibration control for many years now though...

-Charlie

 

[MN4runnerman]

Closed vs. open cell foam.

That said, I still wouldn't use it in a place where it is regularly exposed to the elements. High-density closed-cell foam has been used in unibody vehicles for strength and vibration control for many years now though...

-Charlie

Can you even find closed cell foam in a spray can? When I hear using spray foam on a car I think of the cheap insulating foam in a can you get at Home Depot. Not an industrial grade insulating foam sprayed out using a gun.

 

[T4R_Fanatic]

really interested to see how this goes

 

[phattyduck]

Can you even find closed cell foam in a spray can? When I hear using spray foam on a car I think of the cheap insulating foam in a can you get at Home Depot. Not an industrial grade insulating foam sprayed out using a gun.

Closed cell stuff is all two part. And structural stuff is very specialized (like, rock hard, 4x to 8x heavier per volume than you are thinking).

Search google for "structural foam chassis reinforcement" and you'll see that even OEMs use it. But again, only on unibody vehicles that I have seen...

Open cell is sometimes used for noise reduction, but only inside a vehicle.

-Charlie

 

[SilverRidgeRunner1]

Closed cell stuff is all two part. And structural stuff is very specialized (like, rock hard, 4x to 8x heavier per volume than you are thinking).

Search google for "structural foam chassis reinforcement" and you'll see that even OEMs use it. But again, only on unibody vehicles that I have seen...

Open cell is sometimes used for noise reduction, but only inside a vehicle.

-Charlie

Yes in the context I was reading about it was being used in sports car frames for stiffing up the frame and rust prevention and also noise reduction. u are correct on the foam type structural foam chassis reinforcement it is a two part mix

 

[sleepydad]

With the technology coming along really well I wonder how spray foam would do to seal the frame up completely. I know the stuff is air tight and keep water out really well and it wouldn't take much to seal everything quick any thoughts.

I see this kind of took off...
[MENTION=139000]phattyduck[/MENTION] [MENTION=106706]MN4runnerman[/MENTION] [MENTION=385111]T4R_Fanatic[/MENTION]

so... I have also been exposed to the building trades and yes close cell poly can be considered part of the structure because it does have substantial strength. it's also a moisture barrier. my house is done in open cell because of the cost and it works really well.

I have a 1950's house when they pretty much never considered energy efficiently whatsoever. my heat bill in January to keep the house @ 70 deg was about $600-$700. after gutting and spray foaming the house the largest heat bill is now about $250 on cold months.

I also wondered about doing closed cell inside the frame, I will admit. My land rover has open cell all over on the inside.

I don't know I think it might work but... you would probably have to find the correctly formulation. it's not UV resistant but inside the frame that would not matter. don't know if it's gas/oil resilient but I would guess it is because its polyurethane based. it does burn and by code has to be covered by a 15 min burn barrier. aka 1/2 sheet rx.

Think I will just stick with internal rust prevention and then DTM epoxy on the outside.

 

[sleepydad]

happiness is a freshly sandblasted frame?

<a href="https://imgur.com/j0VSoAB"><img src="https://i.imgur.com/j0VSoABl.jpg" title="source: imgur.com" /></a>

 

[sleepydad]

happiness is not made of DTM Epoxy

got 2x coats of rust seal down, nasty stuff. organic vapor filter cartridge is a must with this stuff.

it's gooey, it's runny and it's 100% sucks to do this kind of thing but hopefully this will provide good protection. my fingers are x'ed.

<a href="https://imgur.com/K5wrECN"><img src="https://i.imgur.com/K5wrECNl.jpg" title="source: imgur.com" /></a>


<a href="https://imgur.com/mBJvLJK"><img src="https://i.imgur.com/mBJvLJKl.jpg" title="source: imgur.com" /></a>

<a href="https://imgur.com/dosRvbG"><img src="https://i.imgur.com/dosRvbGl.jpg" title="source: imgur.com" /></a>

 

[huntsonora]

unreal work

 

[thezentree]

got 2x coats of rust seal down, nasty stuff. organic vapor filter cartridge is a must with this stuff.

it's gooey, it's runny and it's 100% sucks to do this kind of thing but hopefully this will provide good protection. my fingers are x'ed.

<a href="https://imgur.com/K5wrECN"><img src="https://i.imgur.com/K5wrECNl.jpg" title="source: imgur.com" /></a>


<a href="https://imgur.com/mBJvLJK"><img src="https://i.imgur.com/mBJvLJKl.jpg" title="source: imgur.com" /></a>

<a href="https://imgur.com/dosRvbG"><img src="https://i.imgur.com/dosRvbGl.jpg" title="source: imgur.com" /></a>

I'm beginning to notice a disconnect between these images and the title of this thread.

 

[sleepydad]

I'm beginning to notice a disconnect between these images and the title of this thread.

I have plenty of room here for some sketch... it's coming trust me.

 

[thezentree]

I have plenty of room here for some sketch... it's coming trust me.

Hah I'd hate to think otherwise.

 

[sleepydad]

adventures in 3rd members

lets figure out 3rd members I said... it will be fun I said.

I did start out thinking I would be able to do a vid and I did a take it apart vid
<iframe width="800" height="600" src="https://www.youtube.com/embed/rzoE6dZnXiQ" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

HOWEVER

after messing around with this thing for 4-5 hours.... I gave up shooting video and just hid under the workbench drinking whiskey.

I can say this... the gear guys who are good and have lots of experience with these things. Kudo's man these things are an exercise in "wax on", "wax off"

I have the backlash set within spec, I have the pinon preload set to spec for new bearings.

The pattern is another story and I since this ring/pinon set has 250K on it... I'm just going with it and we will see what happens. it's not anywhere close to what is suggested and I would have to re-shim the pinon to get it into the middle for sure.

I just need to it last 5-6K miles and hopefully it will do that.

<a href="https://imgur.com/vp7xusU"><img src="https://i.imgur.com/vp7xusUl.jpg" title="source: imgur.com" /></a>
<a href="https://imgur.com/y6QWg7z"><img src="https://i.imgur.com/y6QWg7zl.jpg" title="source: imgur.com" /></a>

 

[hamsandwiches]

Whats your take on used oil undercoating?

 

[sleepydad]

Whats your take on used oil undercoating?

so your asking me, how do I feel about using old engine oil and spraying it all over the frame to prevent rust?

I have known some people who have done it. it works.

I also know somebody who did exactly that and his car caught on fire and burnt to a crispy critter. so... I'm hesitant to do it.

not saying it does not work, it does. also being the driving exon valdez might not be cool? I do drive my other truck thru streams in the mountains and other wild areas and dumping oil into those streams seems like a bad idea. I know it's not a lot but it would bother me.

 

[sleepydad]

Rear Axle assembly mostly

with the 3rd ready for action or destruction we shall see it was time to put the lego's togeather.

I even got the 2 longer studs so the 3rd is keyed like the Toyota gods specify.
<a href="https://imgur.com/nq3rXSp"><img src="https://i.imgur.com/nq3rXSpl.jpg" title="source: imgur.com" /></a>

I remembered at one point I wanted to replace the old school 24 mm hex nut style plug/fill bolts with something fancy and exotic. these are all magnetic which makes them intrinsically bad arse. they are a squeak longer than stock but I tested clearance Clarence and no issues.

<a href="https://imgur.com/SWZ0Esx"><img src="https://i.imgur.com/SWZ0Esxl.jpg" title="source: imgur.com" /></a>
<a href="https://imgur.com/2TQ4ZiI"><img src="https://i.imgur.com/2TQ4ZiIl.jpg" title="source: imgur.com" /></a>

<a href="https://imgur.com/mUv3Mdk"><img src="https://i.imgur.com/mUv3Mdkl.jpg" title="source: imgur.com" /></a>

all torquified
<a href="https://imgur.com/kApiT73"><img src="https://i.imgur.com/kApiT73l.jpg" title="source: imgur.com" /></a>

and as a note to self... after you almost knock the rear axle assembly off the stupid jack stands 4x times... hang the assembly from the hoist and do it that way. so much easier + the added benefit of anti gravity and height adjustment when you put the wheels back onto it.

<a href="https://imgur.com/T9Hl2Qj"><img src="https://i.imgur.com/T9Hl2Qjl.jpg" title="source: imgur.com" /></a>