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> Installing dual carbs for the first time, Nevermind! Sticking with the Fuel Injection
sean_v8_914
post May 26 2010, 09:45 AM
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sean_v8_914
post May 26 2010, 09:46 AM
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sean_v8_914
post May 26 2010, 09:50 AM
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this linkage set up is also common but not my favorite. some prefer forward linkage hex bar placement for easy access. I think rear placemnet is cleanre looking


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sean_v8_914
post May 26 2010, 09:53 AM
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McMark
post May 26 2010, 10:34 AM
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Sean, those drawings were you try to equalize everything don't always work, especially on the forward mount hex bar linkage. The reason your images/technique can be quite wrong is that on the hex bar linkage the cross-bar position is not equal on both carburetors. Your 'equalize everything' technique only works if the cross-bar arms are in the same relative position on each carb.

I prefer to simply ignore the measurements aspect, and watch both carbs to make sure they are hitting idle at the same time and hitting WOT at the same time. Then check airflow with a synchrometer at idle and at mid-throttle. When all those things are happening, the carbs are synched, even if the linkages don't measure out to be equal.
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VaccaRabite
post May 26 2010, 11:11 AM
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(IMG:style_emoticons/default/agree.gif) I tried to draw it out the first time, and ended up having a heck of a time getting it to work. The last time, I just did it like how Mark said, and I was balanced within 30 minutes.

here is the throttle cable mount I made. Easy, and very strong.
(IMG:http://www.914world.com/bbs2/uploads_offsite/farm5.static.flickr.com-1435-1274893863.1.jpg)

Zach
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rhodyguy
post May 26 2010, 02:00 PM
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Chimp Sanctuary NW. Check it out.
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jamie, if you did not install the phenolic intake gaskets used with the fi system, put some on before you button things up. installing them after the dial in will result in doing the procedure all over again. using the facet pump WILL require a fuel pressure reg and a fp gauge. if you purchase the cb pump, remove the metal canister connected to the pump with a short piece of fuel line and squeeze clamps. it's a fuel filter and will be a pain to change out which you will have to do eventually. i like the large white fi fuel filters with the same size fittings on both sides. note your jetting sizes prior to installing the carbs and write the numbers down in your cb weber book. MUCH easier now that later. if you approximated the same dist rotor positioning during the swap, the timing should be close enough to light the engine off.
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JRust
post May 26 2010, 02:49 PM
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Okay thanks for all the tips! I am holding off on carbs.

I've got a guy close to work that know the FI well. I went by to talk with him & he is going to get it working for me. He is even going to take some trade. He needs a 2.0 for his LE. I will let you guys know once I am on the road with it (IMG:style_emoticons/default/smile.gif)
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McMark
post May 26 2010, 02:53 PM
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I'm extremely anxious to see what it was that I missed. (IMG:style_emoticons/default/confused24.gif)

(IMG:style_emoticons/default/cool.gif)
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dr914@autoatlanta.com
post May 26 2010, 02:54 PM
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QUOTE(JRust @ May 26 2010, 01:49 PM) *

Okay thanks for all the tips! I am holding off on carbs.

I've got a guy close to work that know the FI well. I went by to talk with him & he is going to get it working for me. He is even going to take some trade. He needs a 2.0 for his LE. I will let you guys know once I am on the road with it (IMG:style_emoticons/default/smile.gif)


Praise the 914 gods that you have come to your senses!!!
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Rav914
post May 26 2010, 03:03 PM
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Save the carbs. IF you get tired of spending weeks and more $$$ trying to get the FI to work, you have an alternate.
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Dr Evil
post May 26 2010, 03:07 PM
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Send me your transmission!
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QUOTE(McMark @ May 26 2010, 04:53 PM) *

I'm extremely anxious to see what it was that I missed. (IMG:style_emoticons/default/confused24.gif)

(IMG:style_emoticons/default/cool.gif)


Me too.

We did not get to check everything, like compression (IMG:style_emoticons/default/rolleyes.gif)
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JRust
post May 26 2010, 07:57 PM
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QUOTE(Dr Evil @ May 26 2010, 02:07 PM) *

QUOTE(McMark @ May 26 2010, 04:53 PM) *

I'm extremely anxious to see what it was that I missed. (IMG:style_emoticons/default/confused24.gif)

(IMG:style_emoticons/default/cool.gif)


Me too.

We did not get to check everything, like compression (IMG:style_emoticons/default/rolleyes.gif)


Thats a big NO (IMG:style_emoticons/default/stromberg.gif) for me too! It had me stumped before you guys got to try to figure it out. Of course on a trailer in a parking lot while it's dark is not the best working conditions (IMG:style_emoticons/default/huh.gif) . I did allready have all my FI off. So it needs to get put back on. I'm going to leave it to him as he may find something I missed putting them on to begin with (IMG:style_emoticons/default/dry.gif) . Either way I will just be happy to have the damn thing finished. (IMG:style_emoticons/default/blink.gif) Okay well closer to finished
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Lennies914
post May 26 2010, 08:04 PM
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(IMG:style_emoticons/default/popcorn[1].gif) I have to admit, I was a little bummed to read the decision to go with the carbs. We're all rooting for you! (IMG:style_emoticons/default/cheer.gif) (IMG:style_emoticons/default/cheer.gif) (IMG:style_emoticons/default/cheer.gif)
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JRust
post May 26 2010, 08:24 PM
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Going with Carbs was always & only going to be a temporary thing. Just to get my motor broken in & get some miles on it. I was just going to get the FI figured while I was driving it.
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Root_Werks
post May 27 2010, 01:33 PM
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Be very interesting to see what makes the FI work. Often times it's that simple, no one would have thought part or wire or connection etc.

Soon.

(IMG:style_emoticons/default/driving.gif)
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Shade Tree
post May 27 2010, 02:02 PM
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Well, hopefully, Bruce will see this post. He likes my helpful comments...

How do you expect the mechanic you hired to get his old fat ass er head in to the engine compartment???? (IMG:style_emoticons/default/confused24.gif) (IMG:style_emoticons/default/lol-2.gif) (IMG:style_emoticons/default/av-943.gif)
If he gets his head in there, he'll have to call for help to get it back out!

Really Bruce is a great guy. The engine for my Nissan pickup finally showed up at his shop today. Yep, I'm pushin' them Porsche's OUT and my Nissan goes in. (IMG:style_emoticons/default/blink.gif)
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sean_v8_914
post May 27 2010, 03:19 PM
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not the measurements, just teh angles. its relative geometry L/R. I never said anything about equal measurements or length.
your probably right. I guess the proof is in the results.
some people can learn a proceedure and some learn and understand teh relationships that make a system work
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Root_Werks
post May 27 2010, 03:44 PM
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These are good linkage pictures, what kind of linkage is this?


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Root_Werks
post May 27 2010, 03:46 PM
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More of it, it's on my engine, haven't seen it used on anything before.

It works really nice, easy to adjust, can't find it new anywhere though.


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