2000 Disco II Major Rebuild/Overhaul by RSPTex

4 minute(s) of a 50 minute read

Yeah, just talked to my machinist yesterday and he's going to do it for free since I've had him do so much other stuff. Then I'll lap them. Good call.

As for coating the inside liner of the exhaust manifolds, I am tempted to do it. The big question, is how much would it cost? I'm going pretty crazy on this rebuild, but I can only go "college-student-with-decent-income-and-more-tuition-due-in-September Crazy". If this is something I can do on my own, then I'll look into it, but if not... guessing it's not cheap. And why would you want to line the manifolds to keep in the heat? Wouldn't you want to coat the outside so the heat gets to the manifolds, but not to other things? The heat has to go somewhere, so if it's not radiating out of the manifolds, it's placing more heat load on the catalytic converters (and radiating to the front driveshaft U-Joints), or making the heads and block hotter.

When I reason it out, lining them sounds like a bad idea. Convince me, though. I'd like to know more about the concept and where else it's done, and for what reasons, with which successes.

Thanks!

I don't know how much work I can update everyone on this weekend. I sprained my ankle and got hit in the neck with a softball while sliding into third this Thursday. I'm pretty useless right now, so I don't know how much work my wife will let me do. On the upside, I finally get time to work on my media/security camera server. Not related to rovers at all, but I am proud of it:
- 3x SSDs in RAID 0 to run Mac OS
- 1x SSD to run Windows
- 8x 3TB drives in RAID 6 (can lose any two drives and lose no information)
- Liquid-cooled, over-clocked quad-core processor
- 1000W 80plus gold PSU
- GTX 760 Graphics card
- Custom case with remote-controlled red LED's (helps performance soooo much!)
It's a fast and powerful little beast. I named him Titan:

With Google Fiber, I have quite the little server!
That's all of my off-rover talk. Just happy to have time to work on it!

8-20-2014

Drowssap, you FAILED! I was convinced. So I went to the foundry at my college to use the sand blaster and remove all the crud from the manifolds and the furnace to cure the ceramic paint. They were previously blasted with glass, but the ceramic paint doesn't stick well to that surface, so I wanted to rough them up. It's amazing how cast iron can look like aluminum after being blasted so clean. Check it out:



I don't have pictures of the cured product, but it looks amazing and I can't wait to mount them up. I also replaced the old studs before painting to give them some rust and heat resistance, too. We'll see how much comes off while bolting on the Y-pipes...

I used the VHT Flameproof stuff in matte black (not as flashy, but that's ok). It is supposed to resist up to 2000 F. The paint goes on pretty easy, and I sprayed some directly into the pipes of the manifolds to coat the inside as well as the outside. It worked better than I expected. I was guessing I'd have tons of running, but it distributed out pretty evenly. I used the whole can on the two manifolds. Part of me wanted to go thicker, but I think the layers I have will work fine. The ceramic coating is very hard after curing and cooling. I like it.