Qjet carb max fuel pressure 3.5#!!

[hpcrank]

Greetings

I have a QJet carb on my 454 Mercruser I/O and my classic Pontiac 455 so have done some research on these. I have learned that you can not run the old school fuel pressure on these carbs with unleaded and oxygenated gas. The max fuel pressure for a marine Rochester Q Jet carb is 3.5#!! Please search Max fuel pressure for Rochester QJet carb or go to : https://video.search.yahoo.com/yhs/...=7927a1d462b461d24f505c9dcf8bc1f6&action=view

VR
Hpcrank

 

[scoflaw]

Why not ? 5lbs.works with e10 in my NE location.

 

[techmitch]

That carb. is designed to work correctly with 4-6 psi. fuel pressure. Nothing more and certainly nothing less.

 

[PlayDate]

BTW what is up with creating three different threads for this topic?

 

[hpcrank]

Why not ? 5lbs.works with e10 in my NE location.

Hi

I cant tell you the physics of this but the fellow in the video is a long time Q-Jet builder and he has a pretty convincing demonstration in his video. My carb. ran rich until I installed a regulator and pressure gauge. If you have one of the later carbs it may have been designed to work with oxygenated fuels.

VR.
Hpcrank

 

[hpcrank]

That carb. is designed to work correctly with 4-6 psi. fuel pressure. Nothing more and certainly nothing less.

Did you watch the vidio?

 

[hpcrank]

BTW what is up with creating three different threads for this topic?

Hi

Please explain, I am not of the computer age so do not know what a thread is. If you can explain my error perhaps I can avoid making the same mistake again.

VR.
hpcrank

 

[hpcrank]

BTW what is up with creating three different threads for this topic?

Greetings

Did you look at the video? Sorry if I have broken any rules, I didn't grow up with video games.

VR.
Hpcrank

 

[hpcrank]

That carb. is designed to work correctly with 4-6 psi. fuel pressure. Nothing more and certainly nothing less.

dHi

Please see the video and then let us know what you think.

VR.
Hpcrank

 

[hpcrank]

BTW what is up with creating three different threads for this topic?

Hi

My bad, please explain my error so I do not repeat it.

Thanks
Hpcrank

 

[PlayDate]

It is simple. You figure out where the topic belongs and Create only one Post New Thread on your topic. Creating multiple Threads on the same topic is just annoying and problematic.

 

[hpcrank]

Hi

On this message I have opened yours and hit reply. Is this the proper way to respond to your message?
This iss how I have been doing it all along I thought.
Hpcrank