now..is there a specific way / order to put the manifold and intake on?
locating gaskets
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From: Boise, Idaho
Success! =P
It's pretty easy to tell. You can see how they line up off the vehicle. Hold the intake and exhaust manifolds up and just make sure that the manifold-to-head mating surface of the exhaust manifold is even with, or further back, than the manifold-to-head mating surface of the intake. If it's not, see what's binding and grind it off.
It's pretty easy to tell. You can see how they line up off the vehicle. Hold the intake and exhaust manifolds up and just make sure that the manifold-to-head mating surface of the exhaust manifold is even with, or further back, than the manifold-to-head mating surface of the intake. If it's not, see what's binding and grind it off.
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Joined: Dec 2007
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From: Boise, Idaho
It's easier if you remove the alternator bracket, but not necessary.
From there, I usually hold up the front (right) exhaust manifold and put in the holding bolt (the one on the very front of the head). It'll hang down, but at least it's in place.
Then, put the intake on the alignment pin and put in the intake holding bolt (the one on the very back of the engine.)
The rear exhaust manifold is kinda the free roamer on the carb'd head since those extra bolt holes aren't there. You just have to hold it up in place while you put in some bolts. As you hand tighten a few, it'll start staying in place.
After all three are up and in place, put in the rest of the bolts.
After all the bolts are in, and the manifolds are in place, torque them to spec.
I'll usually torque in stages, but it's not necessary.
15ft/lbs
20
25
This shows the stock intake/exhaust but the bolt pattern and sequence is the same.
From there, I usually hold up the front (right) exhaust manifold and put in the holding bolt (the one on the very front of the head). It'll hang down, but at least it's in place.
Then, put the intake on the alignment pin and put in the intake holding bolt (the one on the very back of the engine.)
The rear exhaust manifold is kinda the free roamer on the carb'd head since those extra bolt holes aren't there. You just have to hold it up in place while you put in some bolts. As you hand tighten a few, it'll start staying in place.
After all three are up and in place, put in the rest of the bolts.
After all the bolts are in, and the manifolds are in place, torque them to spec.
I'll usually torque in stages, but it's not necessary.
15ft/lbs
20
25
This shows the stock intake/exhaust but the bolt pattern and sequence is the same.
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Laughing Gas
Joined: Aug 2011
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Great info! Now on an earlier note..we said we were going to use the carb adapter. I know that the design of the c intake is like a "hybrid" dp and single. If the carbs are mounted sideways..then wouldn't that mean not all the canals would be getting fuel. If your confused..there's a diagram online of how the fuel flows in the c intake. I believe its in the tips and tricks now I think about it. This carb I have is a two Bbl..and if mounted sideways..would mean only part would be receiving fuel. I hope u understand haha
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From: Boise, Idaho
I may be wrong, but I don't think so. The main opening of the Offy C is one big opening and the area directly underneath the carb is a fully open area too. So, the air/fuel from above goes into the big open space and then is sucked down into the individual runners. From what I see, the 'divisions' are further on down the runners.
Any air/fuel from a carb is going to come straight down into the intake and the dividing will take place afterwards. If that makes sense.
Any air/fuel from a carb is going to come straight down into the intake and the dividing will take place afterwards. If that makes sense.
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Laughing Gas
Joined: Aug 2011
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I understand. Just in the illustration I seen it looked as if there wasn't a full divided..but a small ridge. I'll just have to see when it gets here too. I'll be checking the carb number today..after work..I clock out at 7 pm tonight (Missouri)
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From: Boise, Idaho
Awesome, glad things are moving along!
The intake and exhaust share ALL the mounting bolts except one on each end. That's why its important that when you're tightening things down that you double check that each washer is spanning properly over both an intake and exhaust tab. I've had a few slide off before when I was torquing them down.
The intake and exhaust share ALL the mounting bolts except one on each end. That's why its important that when you're tightening things down that you double check that each washer is spanning properly over both an intake and exhaust tab. I've had a few slide off before when I was torquing them down.
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