Bringing this project to the finish line
I have been working here and there as I am able, and my 1st generation Summit is finally nearing the finish line. SInce I hope that this thread will linger on as a help to future restorers of these Weber legacy grills, here are some more details I did since my last significant post:
With the frame done, it was time to face fixing the porcelain-plated steel firebox and trying out my stainless reinforcement panels. The first big challenge was what to do about the rust that had already started on them. Larry had obtained this set from a donor grill, but even this second set was going towards Swiss cheese as he has described.
Attacking this problem posed some hard questions for me. From all that I can see, there are two types of products that relate to this problem: ONE, stuff like Rustoleum Rust Reformer, Eastwood Rust Encapsulator and POR15. These products directly attack the rust and neutralize it. Then cover with varying textures. They are not paint, and none of them is rated to as high a heat level as would be likely to occur inside a grill. TWO, paint products designed for high heat with rust prevention capabilities. This would include products such as Eastwood's High Temp Coating designed for exhaust manifolds. This, and similar products, can take the heat, and they prevent new rust. But, they really do not attack the existing rust.
So, I felt any decision was a compromise. I went with POR-15. Yes, I do get it that it is not high heat rated. However, it is the strongest rust treatment/restorer that I have worked with. It can't tolerate exposure to UV rays, but all these parts will be in the dark, so that is not an issue. If it were, top coating with quality paint would solve that. Anyway, POR-15 has supposedly been tested at 450 degrees for hours without issue. Of course, grill interiors are a LOT hotter than that. So, I guess the jury is still out. One important thing is that the parts I treated are almost all covered by the stainless steel reinforcement plates. I am hoping that will mitigate issues.
Here is the porcelain firebox part after treatment:
There were also a couple other rust areas I treated including where I had to cut-off an immovable bolt that held the top firebox part to the bottom and my less than perfect skill with a cutoff tool left scars:
I think the risk was worth the benefits of arresting the rust monster on these irrreplaceable parts.
Then, it was on to applying the stainless panels. I posted earlier about the red "food grade" RTV rated to 650 degrees that I bought on Amazon. Having no experience with RTV, I asked
@Bruce for some recommendations. I used painters tape to mark the areas of application on the porcelain and also applied the RTV to the stainless part. Bruce and I discussed levels of pressure to apply. I finally settled on using some dumbbell weights to keep some pressure on while the RTV cured for 24 hours.
You may have noticed that in addition to the special pieces made by the sheet metal shop I am working with featuring laser drilled holes to match the burner and igniter openings , I also had them make plain pieces for the back porcelain panel. I was very bummed out to find after cleaning thoroughly that even this part was beginning to show rust and the start of burn-through.
The RTV seemed to work OK, but I was still nervous about the pieces ultimately falling off. The next step was to at last re-assemble the firebox. A couple cool things:
The cast aluminum sides of the firebox have channels cast in to use RTV to better secure the side and provide better heat retention
Securing really shouldn't be a worry when you consider the extensive number of bolts holding these parts together!
The missing bolt above is because I was awaiting the clean-up of the clip that holds the burners. It attaches directly to the lowest opening of the back porcelain panel, just above the bend. You can also see the cleaned-up clips at the top of front and back panels. These secure the larger clips that hold the flavorizer bars and also the grates of the grill.
Thankfully, all these clips are made of non-magnetic 304 stainless. But they are 25 years old and show some wear. I was reluctant to overdue the cleaning and risk damaging them. They are pretty much irreplaceable. My solution was to soak in a bucket with a mix of water and plenty of Sam's Members Mark Grill Cleaner. That MM stuff is a strong alkali which can burn sensitive skin, so be careful when you use it. I never noticed before, but the bottles clearly say "Not for home use!"
When I installed the burner clip and both flavorizer clips, I had to navigate a little around my added stainless steel reinforcement panels. The good news, though, is that these clips apply pressure to the panels and should help hold them securely.
At the same time, I also secured the top section of the firebox (which is where the hood attaches) to the bottom. Originally, I believe this was done by using the same flat top bolts and speed nuts that Weber uses for the side pieces on this and on older Genesis grills. That is nice because it helps camouflages these holders. I decided in this case, that I didn't mind them showing and switched to stainless screw head bolts and stainless washers and nuts.
If you look at the lowest bolt opening of the upper part, you will see that I did use the flat bolt/speed nut combination for this hole because this opening is visible when the grill hood is open. I also went conventional using these on the hood side caps because i like the all-black look.
Take note of the stainless torx bolts I used to replace the originals which were regular steel and showing their age. The new ones I bought turned out to have heads larger than the openings in the cast aluminum. This was OK for the bottom, but when I put on the hood, they caused friction opening and closing it. I had to replace them with stainless screws that would fit inside the openings:
So, finally, I had a fully assembled firebox and hood. My Summit was starting to look like a grill!
Larry gave me two sets of 304 stainless burners. I chose the better set to clean up with a wire brush on my bench grinder. Not perfect, but I would rather have the classic old Weber 304 ones than the newer, cheaper metal that might have to substitute. (I have found one place that sells Weber replacement burners. Not cheap. I have though about buying a set to have, but since Larry included a second set, I am not sure it is worth it.)
One challenge is that these burners use a long crossover between each set of two burners. What was left of the ones Larry gave me were good for measuring, and that's about it. I made my own from my stock of Genesis crossovers. (Hard to see in the picture below but they are there in the back.) After finishing them, I found where you could buy just these on GrillParts.com, so I ordered that to make my "2nd" set of burners complete.
While I was doing this, I also was soaking the two upper grates that Larry also kindly included in the deal. Once again, these are real 304 stainless. After a lot of soaking, some scrubbing and more soaking and a final clean-up with some Bar Keeper's Friend (sorry, Larry!) they came out looking pretty nice. Not sparkling stainless, but no worries about rust and corrosion:
PHOTO LIMIT REACHED! TO BE CONTINUED