I've seen the CB covers brand new out of the box. The bolt seals do indeed look like a slice of rubber fuel hose. Use 5/16" ID hose, exactly the same as 8mm fuel hose, same size as the bolts holding the covers on.
What a great idea. I'll definitely do that.
This technique has been working well for me for over 20 years.
The CB Covers have a depression for a big O-ring, so the washer under the bolt head squashes the piece of hose into the cover which squashes it against the threads, sealing between the cover and the bolt.
If you go with a thicker piece of hose, like 3/8”, all that happens is the excess rubber squashes out between the cover and the bolt’s washer while still sealing the bolt and cover. Using less than 1/4” hose piece might not seal well enough to prevent weeping oil, so you have to play with the thickness to learn what’s right. I also try to get the cuts parallel but found that it’s not especially critical.
While I have CB Perf. Covers, this should work well for any aftermarket, bolt-on cover.
PLEASE NOTE: These covers use a bolt that screws into the rocker shaft supports. I had a rocker shaft support loosen up enough to break the shaft, so whenever I have the covers off I re-check the torque of the shaft support. IIRC, it’s a 13mm hex that easily fits a torque wrench. It’s good insurance.
@Stan Galat posted:Behold, the "placeholder" 2110 that's somehow been back there since the spring of 2019.
I don't know, man - "dorky a.f." seems kinda' strong.
... or maybe not. The whole thing looks a bit more Buck Rogers with the DTM, I think. Regardless, it's not as cool as naked velocity stacks - but whatcha' gonna' do?
My pair just arrived and I’m modifying them for my breather hoses and so forth. Should be done tomorrow.
Everything, including the conical filters, seems to fit just fine.
What did you do to seal between the air filter base and the bottom of the turbo hats? I wanted something better than some grease down there so I found some 1/4” wide by 1/2” high rubber channel, slipped it over the bottom of the hat sides and glued it to the bottom of the hat sides, along with glueing the ends of the channel together, with 3-M weather-strip adhesive. That seals things up nicely AND adds another 3/16” to the height of the hat for better clearance to the velocity stacks.
@Gordon Nichols posted:My pair just arrived and I’m modifying them for my breather hoses and so forth. Should be done tomorrow.
Everything, including the conical filters, seems to fit just fine.
What did you do to seal between the air filter base and the bottom of the turbo hats? I wanted something better than some grease down there so I found some 1/4” wide by 1/2” high rubber channel, slipped it over the bottom of the hat sides and glued it to the bottom of the hat sides, along with glueing the ends of the channel together, with 3-M weather-strip adhesive. That seals things up nicely AND adds another 3/16” to the height of the hat for better clearance to the velocity stacks.
Great idea.
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WHAT?!?!?!?!?
They sell those gaskets at CB, too?? Rats!!
If I knew that I would have bought ‘em and saved an hour of screwing with this rubber channel!!
@Ah, well……. The channel is sealing really well and didn’t cost me anything since it was bought for another project a while ago. And I learned that 3-M weatherstrip adhesive is wicked sticky stuff. ( Don’t get any on-yah! )
I was serious Gordon - that's a great idea. The extra height is what's really needed with this setup.
Well done.
I wish I could remember what I originally got that channel for. I had about 8 feet of it so I bought a lot for something. Anyway, it is about 1/4" wide and the sides of the channel are around 1/2" tall. The edge that the turbo hat sits on is maybe 3/16" thick and the channel fits the turbo hat like it was made for it. Come to think of it, if I were to get the real deal bottom gaskets, that would lift the top of the hat up even more.
Hmmmmmm........
The rain hats from Special Edition came in the mail fairly quickly and I have yet to install them. Could you guys in the brain trust give me suggestions on how to seal around the breather hose fitting on top for the right carb as well as under the wingnuts and how to trim the hats for the CB Performance hex linkage? Thank you in advance.
We forged ahead and installed the rain hats today and changed the oil and filter. We managed to finagle them and even though they didn’t end up being show quality like some of the folks here have they fit well; kudos to the guys at Special Edition; great product and great service. Yes I know; I need to clean and detail the motor a little bit.
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@impala wrote: "Could you guys in the brain trust give me suggestions on how to seal around the breather hose fitting on top for the right carb as well as under the wingnuts"
I'm installing the CB "Turbo Hats" which meant that I needed to drill a 7/8" hole in the middle of the hat for my breather hoses coming from the breather box. I then install a 5/8" ID X 7/8" groove OD rubber grommet in that hole. My breather hoses are 5/8" so I use a 5/8" 90º elbow for a PCV fitting - One end is barbed for the hose, the other end is smooth and is a press fit into the fitted grommet. No clamps etc. needed.
As far as under the wingnuts on the cover, the stackup is the CB flat washer with a rubber side down to the cover, then a star washer and then the wingnut. I've never paid much attention to degradation of the rubber washer and they don't seem to be wearing so I just keep using them.
@Sacto Mitch posted:.
................................This just in from Goodwood..........
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He stole that idea from Jim Hall!
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Doh!
Just sayin. Jim Hall should have drawn the line way farther in regarding his SpeedQueen endorsement deal.
Quite a beauty, wasn’t it?
I can’t remember if it was banned before, during, or after it’s first race.
You could just move to CA where it never rains.
I had to look up that Whirlpool Special. Thanks, @dlearl476, really interesting story.
@edsnova posted:I had to look up that Whirlpool Special. Thanks, @dlearl476, really interesting story.
Jim Hall was quite an innovator. And a product if the Texas oil fields like Caroll Shelby IIRC.
Troutman and Barnes. That’s a name you don’t hear often.
And let’s not forget to where the whole thing started.
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I didn't have to look up that Whirlpool Special.
I was there.
In the crowd the R&T article mentions in the opening graph:
"...On July 12, 1970, a white Chevrolet pickup truck towing a trailer pulled into the paddock at Watkins Glen International Raceway for the third Can-Am race of the season. A small crowd gathered to watch the team unload. The small white race car atop the trailer looked like nothing else: no wing, no velocity stacks, no scoops or side pods or wild cutaways or NACA ducts, hardly a curve of any kind. The rear wheels were encased in bodywork as flat and unadorned as a diner kitchen. "Like the box it came in," the crowd observed. They moved to the back of the car: two fans like jet engines, supported by three black Dagmar-shaped cones, looking more like a Star Wars escape pod than a road-going automobile..."
It was mostly taken as a sideshow curiosity. At the time, everyone called it 'the vacuum cleaner car'. We were there mainly for the 6-hours Sports Car race the day before, where the big deal was watching the John Wyer 917's demolish the lone Ferrari 512 — driven by the famous Italian driver, uh, Mario Andretti (!).
I was never as interested in the Can-Am cars as the sports cars, but it was a two-fer weekend so we stuck around for the Sunday race. I don't remember much about the vacuum cleaner car, other than the raucous howl it made and the big cloud of dust behind it. For perspective, it was much louder than the seven-liter racing V-8's in the other cars. And louder than the 917s. Somehow, they managed to get Jackie Stewart (the reigning F1 champion at the time) to drive, so that added some interest, but to no one's surprise, it lasted only 22 laps before something serious broke.
Imagine if a company like Porsche had developed this concept what the possibilities may have been. But I guess the point is it was so off-the-wall that a company like Porsche never would have pursued it.
Or what if Ferrari had tried? At least it would have looked better.
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I’ve always wondered why they didn’t have the fans blowing up. Less propulsion but more down force. And a whole lot less complaining from following drivers.
And speaking of “two fer weekends,” we’re set for a couple of monumental events:
LeMans Hypercar and LeMans Daytona hybrids from both IMSA and WEC are competing together at this year’s Rolex 24 Jan 26-29.
And the two will compete separately in March with a 1,000 mile WEC race on Friday and the traditional 12 hrs of Sebring on Saturday.
With 5-6 manufacturers expected to show up with new LMDh cars should be the most exciting endurance racing news in some time.
My buddies and I all cooking up a beachfront AirBnB for January right now.