Q-jet info
 

I would like to tip my hat and give a massive Thumbs up and a big thank you to Jim Hands!

He has always provided great info and insight into our Pontiacs in every way.

I just came across another ( to me ) massive tuning info gem when finally going through in detail his book published by SA designs # 78.

On the bottom of page 52 he describes in the needed detail how to very finely adjust the fuel curve of the primary side of these spread bore carbs .

This adjustment procedure is something I never knew in my adult 55 years of running a Q-jet carb.

While there are many items of info in Jim’s book that makes it a great value, to me these 6 or so paragraphs in the bottom of page 52 are alone easily worth the cost of this SA design book.

This info also puts to shame the tuning info about the Q-jet presented in the Doug Roe book of many decades ago about Rochester carbs.

Especially with todays fuel if your running a Q-jet, or will be running one this is tuning info that you should have at your disposal without question!

I wonder if Jim could offer the whole Q-jet section out of his book separately to us Q-jet running Pontiac folks because the whole section is great!
So once again thanks Jim!

Wow. Looked up a copy of that. The asking price for this book is a lot of coin.
I dont have any Pontiacs in my future at the moment, but I do play with the Quadrajets.
Curious if you could scan that section so I could put it into my digital tool box

Pretty sure his name is Hand, not "Hands". Maybe you've not read Cliff Ruggles book on Q-jets?? It's also very good and he covers the primary adjustment procedure. I agree that both of Doug Roe's books are woefully lacking and additionally have outdated info. About the only benefit to those books are the Delco P/Ns he provides.

On some of the 74-earlier Q-jets, and easier than removing the airhorn to swap primary rods or jets, is to run a Buick, Chevy or Olds carb with APT. You can adjust the primary rod minimum height with the turn of a screw. The '76-later carbs are about as easy as falling off a log to adjust.

The section in Jim Hand’s book I posted about very finely details the adjustment of that ATP while the motor is running .

No, I have never seen Cliffs book so I can’t say if it covers this area of the Q-jet the same, but his book has been said to be great also.

Yes, when you find a used copy of Jim’s book there expensive, but really like I posted there’s more then enough great details in it to make it worth reading, and especially if you are goin to port your D port iron heads.

I might contact is Son on this board to see if I can post up that info I was looking at from my first post since it’s copyrighted.

You mean these books? Lol. On my desk all summer long this year

I believe Tom succeeded in getting a re-release of his dad's book in '23, available from BOP Engineering:

https://www.ebay.com/itm/225932482612

Kudos to Tom and BOP Engineering. Too much really good information is lost to publishing decisions (for varying reasons).

Car Tech hired me to provide the information for the Quadrajet portion of Jim's book. Shortly after they hired me to write the "How to Rebuild and Modify Rochester Quadrajet Carburetors" book

Book sales are as strong today as ever as is the interest in Quadrajet carburetors. You would think that being 2025 and with all these TB electric carburetors systems available that the interest in using Q-jets would fall off some. In contrast parts sales (I'm retired from rebuilding/restoring carburetors) is stronger than ever and growing more every year.

Anyhow, if anyone wants a signed copy of my book they are available here:

https://cliffshighperformance.com/pr...category/books

Thank You
 

I just want to say thank you guys for inputs on this forum. It takes up your time.
It makes for interesting reading for the rest of us. It's always a learning experience. Thanks again.