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linkage

Here is the linkage attached to the shaft on the left manifold. I studied the pictures posted on this thread to determine how to attach the ball connections.
Old 02-01-2015, 08:52 AM
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test fit

Here is the big linkage shaft test fit between left and right manifolds.
Old 02-01-2015, 08:58 AM
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Quote:
Originally Posted by hdrockerroller View Post
Here is the big linkage shaft test fit between left and right manifolds.
Learned something in bench assembly today.
If you connect the linkage plates to the manifolds before bolting on the carburetors you'll have a hell of a time reaching two of the nuts (under the plates). So though this makes a nice bench test setup, leave the plates off until the carbs are bolted on.
Old 02-01-2015, 11:28 AM
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So I've heard it done both ways. Installing the manifolds then the carbs, or bolting the carbs to the manifolds then installing them as an assembly. Thoughts/experience with either approach?
Old 02-01-2015, 11:31 AM
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Makes no difference.
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Old 02-01-2015, 12:02 PM
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I had to slot both crossbar mounting brackets to get all the angles equal and mirrored with identical length drop links.
Old 02-01-2015, 12:11 PM
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Originally Posted by LJ851 View Post
I had to slot both crossbar mounting brackets to get all the angles equal and mirrored with identical length drop links.
I'm sure its a better setup for doing that, but I'm not seeing why having the same length drop links makes a difference, as long as the distance they travel is the same during an acceleration cycle. But I'm the carb newbie, can you shed more light on why that is important?
Old 02-01-2015, 02:48 PM
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left PMO manifold with linkage

Left PMO manifold with linkage attached.
Old 02-01-2015, 03:40 PM
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Right Carb with drop-linkage attached.

Right PMO carb on bench with the drop linkage in place.
Old 02-01-2015, 03:42 PM
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Quote:
Originally Posted by hdrockerroller View Post
I'm sure its a better setup for doing that, but I'm not seeing why having the same length drop links makes a difference, as long as the distance they travel is the same during an acceleration cycle. But I'm the carb newbie, can you shed more light on why that is important?
The distance the drop links travel can be influenced by the angle, which can be influenced by their leangth. The most important aspect of the set up is that each butterfly opens equally throughout the cycle. Pay close attention to the diagrams in the instructions.

It is likely that your drop links will end up equal, occasionally some crossbars and linkage need a little messaging, cutting slots in the mounts is not optimal as it weakens the metal and can lead to problems with unequal opening of the butterflies and cause stumbling during acceleration etc. But some crossbars and mounts are just so far off they have be be tweeked.

You should be OK as everything in your set up is new, follow the instructions you have to a tee and ask questions here if you do not understand, balance and set up is very important, check and recheck everything.

Last edited by snbush67; 02-01-2015 at 04:14 PM..
Old 02-01-2015, 04:11 PM
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The linkage doesn't have to be the same length as long as the throw is the same (PMO instructions). Also, slotting the brackets is not an issue at all. In fact if you have a 3.6, you have to slot the brackets (PMO instructions) in order to clear the fan shroud.

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Old 02-01-2015, 07:07 PM
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Originally Posted by xcfgjj View Post
Can someone post pics of the throttle linkage connections coming from car to PMOs. Do you still use the stock throttle linkage plate that attaches to theblock?
Check out this picture. It shows the original throttle plate removed and the linkage from the car going directly to the PMO throttle linkage on the left carburetor linkage shaft.
The red shrinkwrap are the studs that held in the original throttle plate.

PMO carbs Installation Pictures thread
Old 02-02-2015, 08:26 AM
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Originally Posted by hdrockerroller View Post
Check out this picture...
xcfgjj was a spammer and he is gone for now.

Easy to detect; Low post count, no vowel in their name and if you "quote them" (don't post the quote) you will see some useless computer link.

Just report them by clicking on the upside down yield sign (under all posts).
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Old 02-02-2015, 09:17 AM
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damn spammers!
Old 02-05-2015, 04:42 PM
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Quote:
Originally Posted by JJ 911SC View Post
That is what it look like. I ran with it for a year before going the Catch Can way.



Been thinking about this set up a bit, I have a can and the PMO set up to choose from. Why did you stop using the PMO system?
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Old 02-05-2015, 05:02 PM
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Quote:
Originally Posted by Ayles View Post
Been thinking about this set up a bit, I have a can and the PMO set up to choose from. Why did you stop using the PMO system?
Good Question...

For the look. You will save a few dollars if you do it only once

I went from the normal Rain Shield set-up to the Flat Top to Individual Flat Filter to Half Tea Ball Filter version.

The versions pictures below "required the Can Catch" set-up.

Race Top



Flat Top Filter on Flute



Half Tea Ball Filter on Flute

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Old 02-05-2015, 05:25 PM
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Trial and Error

Quote:
Originally Posted by hdrockerroller View Post
I'm sure its a better setup for doing that, but I'm not seeing why having the same length drop links makes a difference, as long as the distance they travel is the same during an acceleration cycle. But I'm the carb newbie, can you shed more light on why that is important?
I played with the drop link lengths and everything else trying to get a good sync balance (left to right bank) at low & mid RPM.

After a bunch of trial and error - I adjusted the drop links to equal lengths and adjusted the cross bar mount (on the manfold) and the carbs balanced out perfectly.

Gordo
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Old 02-05-2015, 06:03 PM
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Here's Gordo's thread on tuning the carbs.
Gordo's PMO Carb Tuning
Old 02-06-2015, 06:34 PM
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Installing PMO carbs with engine in car.

Has anyone installed PMOs with the engine still in the car?
Most of the pictures I see the engine out on a stand.

I'm planning to put these on with the engine still in the car, anyone done that?
Old 02-09-2015, 04:44 PM
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Yes, it's not an issue, there is plenty of room.
Old 02-09-2015, 06:32 PM
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