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Valve cover stud size

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Brosky

Brosky

Great Pumpkin
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I'm not near my Tr6 and I wanted to get some nyloc nuts for the valve cover. Anyone know the size and thread?

Thanks,
 
Whatever. I used two nuts (now, I have an aluminum valve cover) and a stainless rubber-based flat washer on the bottom. First the washer, rubber down; then the first nut (thin as you can find) and topped with a stainless acorn nut tightened to the first nut. Neat appearance, for a resto-mod.
 
Stainless washers are pretty thin. Might have to copy you Dr. Bill
 
I found some stainless, rubber-backed, 5/16" washers at a nut and bolt specialty store. The rubber is bonded to the washer.
 
I'm going back to my original cover (after the chrome plater is done with it) to try to eliminate this sudden oil consumption problem. With the addition of the aluminum cover that has no baffle and the oil line to the back of the head, I've gone from a quart every 1,200 to a quart every 500 or so.

I realized that had to order some new V/C gaskets from TRF, so I ordered the nyloc nuts and washers from them at the same time.

I'll look for some of those washers that Bill got. Is the store part of a chain, Bill?
 
Brosky said:
I'm going back to my original cover (after the chrome plater is done with it) to try to eliminate this sudden oil consumption problem. With the addition of the aluminum cover that has no baffle and the oil line to the back of the head, I've gone from a quart every 1,200 to a quart every 500 or so...
Click to expand...

Maybe you need one of these oil seperators from Goodparts. He mentions about using them with the un-baffled aluminium valve covers and oil lines going to the back of the head.
 
When I was racing a Spit with the unbaffled oil cover and an external oil line, I ran an oil separator as described, and had no over consumption issues at all. I could run the entire season, and the catch tank never had an appreciable amount of oil in it.
Jeff
 
Randy, if this works, I'll make you a good deal. You can see pictures of what I have on my site, below my signature at the bottom of this. As you will see, mine is black and I bought it from TRF last year. I hate you take it off because it does make it quieter and it looks really good, in my opinion.

I have spoken to Richard Good about this at length and this is the method of repair that we've agreed to take:

1. Go back to OEM V/C with baffle and drive for a period to check consumption.

2. If better, install roll pin restricter in the bottom of the auxiliary line to decrease the amount of oil to the head.

3. If neither help, install his cannister when I do the triple carb swap, at which time I will probably go with his new valve springs (outer only) and his valve seals.

I truly believe that the first item or maybe one and two together will solve this because I only have 54,000 miles on the car and I never had oil consumption issues in the past.

Leaks, are another story, but those are all fixed at this time. Which means that I'll have another by the time that I finish typing this paragraph.
 
hi paul, thanks. yes i did see the site and i like the looks of that cover, looks like the old sah valve cover and i would love to see your tr6 since we are in the same state! i may be picking up another (driveable) tr6 in a couple of weeks.... /bcforum/images/%%GRAEMLIN_URL%%/smile.gif
Randy
 
I removed my TriumphTune cast cover for two reasons. First was the increased consumption. Second was that the aluminum had begun to stress crack around the holes for the valve cover studs. I used rubber washers and acorn nuts to hold the cover on and only ever 'snugged' down the nuts so I didn't over tighten them to cause the cracking.

The interesting part is that I had the unbaffled valve cover on with the external oil line and twin carbs and never had a problem with oil consumption. As soon as I switched to triple carbs, on a higher compression engine, I was sucking oil through the valve cover breather and back through the carburettors.

So I switched back to the stock baffled cover and had no more consumption issues. If I do go back to an aluminum valve cover I will add an oil seperator like the Goodparts kit. It will depend upon which aesthetic I finally decide upon.
 
I use Richard's oil separator and have the auxiliary oil line and have a unbaffled aluminum cover and suck from 3 carbs. I never lose oil. It's always on my garage floor. But I don't consume it either.
 
I'm sure that once I fix the consumption, that I'll be back to Bill's option #2, "on the floor".
 
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