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  #681  
Old 07-09-2018, 08:27 PM
bob w bob w is offline
Still crazy after all these years!
 
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It's back together and runs. Just have to top off the transmission then the cowl top can be put on. I welded a slantie piece in the intake plenum to eliminate the low spot where raw gas could pool.
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  #682  
Old 07-09-2018, 10:38 PM
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old28 old28 is offline
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That plate should do real fine.

More pictures please.

Interested in how the 1.14's sit on your top plate?

How thick of spacers did you have to install?

Will you be able to make a few driveway starts?
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  #683  
Old 07-10-2018, 03:29 AM
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smallfoot smallfoot is offline
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When you're building a plenum like that, how much smoothing is involved inside?
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  #684  
Old 07-10-2018, 08:54 AM
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Old Iron Old Iron is offline
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I like the art work side panel and the manifold looks like it should work well.
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  #685  
Old 07-10-2018, 12:58 PM
bob w bob w is offline
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To answer some questions; I don't know how much smoothing should be done on the inside of the plenum but I did dress the welds with an air angle grinder and 2" discs. The walnut spacers are 3/4" thick, Tom. I had to cut the choke linkage off the throttle shaft as it hung down too far. Also trimmed the linkage on the throttle arm side for the same reason. In going through my inventory of carbs I find I have 3 1.08 venturis and only one 1.14. OI, I pretend to be the Lone Ranger Racing Team because I am the only member. Hence "Silver Bullet" for the car. The skeleton Lone Ranger was the idea of Kathy the Sign Painter.

Getting back to BlueNorther, I know a slant 6 guru, don Dolmetch, who says the same thing about inlines. They can use a lot more carb for racing than the formulas indicate. Lots of opinions on these subjects.
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  #686  
Old 07-10-2018, 06:55 PM
BlueNorther BlueNorther is offline
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I've seen some of Don's slant six car on the net, and yes I agree that sixes are a whole different cat when it comes to carbs.

doing a little math, ( that's all my head can take) those 3 1.08's would flow
866 2bbl cfm = 610.6 4bbl cfm. hint, hint, hint!!!

as for the finish on the inside of the plenum a little roughness helps stop fuel dropout that would occur with a polished finish, I used to use 36 grit flapper wheels on the inside of all my intake manifolds and intake ports, and polish the exhaust ports to a mirror finish, as you don't have worry about fuel separation on the exhaust side
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  #687  
Old 07-11-2018, 06:53 PM
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As you don't have two 1.14 and the setup is built for dual 2100 carbs I would rebuild two 1.08 and run them and see how they work. You can always build another top plate and install the three 1.08 carbs later if the motor indicates that it needs more air & fuel.

As you know the stock 300 head is a very poor CFM flowing device. Even with bigger intake and exhaust valves they need to be heavily ported and polished along with cleaning up the area around the bottom of the valve head.

Remember, build it like you planned and want. What she runs on the track will tell you about your next move. Thanks for the pictures, stick with it, looking great.
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  #688  
Old 07-11-2018, 10:13 PM
BlueNorther BlueNorther is offline
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Since when has any drag racer applied common sense?

The saying around drag strips has always been: If some is good, more is better,and TOO much is just enough!!!

But, you are right start with 2 - 1.08's, and the next race show up with 3 of them bad boys.

Tongue Firmly planted in cheek!

Peace, Love, and Big CFM's!
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  #689  
Old 07-12-2018, 12:13 PM
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Sent a PM about the email you sent.
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