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Why these things sometime take so long...

Darrell_Walker

Jedi Knight
Offline
So, if you've read some of my recent posts you will know that I set out to change the head gaskets on my TR8, as they were leaking. I was doing a pretty good job avoiding doing too much "while I'm in there" stuff, but I have been cleaning and painting bits as they were out or exposed. Last weekend I started putting things back together, and was on track to be able to start it up this weekend.

One of the dominate features in the FI TR8 engine compartment is the intake plenum. Triumph chose a really pretty gray color (looks like surplus battleship paint?), and didn't appear to take much care in its application (someone told me they suspect it was applied with a broom). Most I've seen are peeling to some extent, mine included. I was hoping to find some matching paint, mask the bits that are attached, and touch it up a bit. But I couldn't find a reasonable off the shelf match, so I was just going to leave it alone. Then I got the inspiration to see if the paint shop could mix up a match and put it in a spray can. $20 later and I had a fresh can whatever the color is called. They even painted a small test area on my plenum, and it was spot on.

So I started to clean up the plenum, and starting thinking that this or that bit wouldn't be too hard to take off, and make for a better paint job. In no time, the only thing left was the butterfly valve. Then I noticed how dirty the inside was, probably because the leaking head gasket, besides leaking a little exhaust in to the cooling system (the problem that alerted me to all of this), also was leaking a lot to exhaust into the crankcase (under the valley pan gasket). In addition to making a lot to sludge in the engine, I'm sure this mean a lot of crap was going out the crankcase ventilation system and into the intake. So I used a can of spray carb cleaner and started cleaning out the inside. It worked really well, but I also got some on the outside. It immediately softened the old paint. My plan had been to just sand down the top and repaint, but now the old paint was soft, and probably not suitable for painting over. And of course much of the damaged paint was on the sides, where there are lots of nooks and crannies, making it difficult to sand or wire brush off.

So now, an hour or two and half a can of paint stripper later, my plenum is mostly bare metal. Still need to do another pass, but it got dark and didn't want to smell up the garage. If the weather cooperates, and I get enough spare time, I still might make it to starting on the weekend, but it may be close. But I'll have a beautiful stock gray plenum!
 
Here are some pictures
 

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Yes, except that yours is "backwards"!
 
*facepalms*

Yeah the lesson here is, be very careful with carb cleaner, it's nasty stuff! I've messed up paint and finishes on several things before by I'll advised cleaning of something too close to it with carb cleaner.
 
Hi Don,

Better!

What is the black box on the back?

Hi Justin,

Yes, it even says that on the can, though I've not had problems before with minor contact that was cleaned up quickly. But whatever they used on the plenum sure didn't like it.

-Darrell
 
Map sensor,

On mine I get away from that pesky MAF sensor that is such the talk on the list

On the plenum from the factory...Water color
 
DNK said:
Map sensor,

On mine I get away from that pesky MAF sensor that is such the talk on the list

On the plenum from the factory...Water color

You are using a MegaSquirt, right?
 
Here it is all painted.
 

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Darrell,

Very nice looking!

Scott
 
SWEEEEEET!!!!
If your limber enough, pat yourself on the back.
You know, of course, that will make the rest look dirty
 
Thanks Scott & Don.

I'm hoping it will look so dazzling that you won't notice anything else!

I did also paint my exhaust manifolds, so they can help out.
 

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That chamber would have looked stunning in a nice coat of red paint......
 
Brosky said:
That chamber would have looked stunning in a nice coat of red paint......

Yes, but then I'd have to do the valve covers, too!
 
You gonna bend the lock taps or are they just for show?....
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Red my A$$$$
grin.gif
 
DNK said:
You gonna bend the lock taps or are they just for show?....

I have one tab bent on each bolt. Probably hadn't finished it when I took the pictures. It wasn't a fun job....
 
Looks great. I love it when people take pride in putting things back together better than they found them. Post some more pics a couple of months from now to show us how well the paint is holding up.
 
Now Don.....you can still do yours in red...just as a highlight, of course.
 
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