Please help me tune these SU's!!!!!!!!!

[Guest 280Tom'z]

i have an L28 with dual SU's the guy i bought the car off of had them tuned as lean as they can get so i need help tuning beacuse i dont know how and i really need to get the Z on the road i just bought the K@N filters with air horns brand spankin new and the car was FI so i still have the 28lbs pump but i have an 1-7lbs adj reg on it set at 4lbs so no probs there so im told i know fuel is getting to the carbs because of the clear filters. the car starts hard and will idle but has no power and will die if you let it sit for a while. someone please help me

[Mike C]

Do a Google search for tuning SUs or get a service manual for a 70-72 (you do have round top SUs?)you can usually get the manuals at a used book store for less than $5. You will need a Unisyn to do it right, howerver. Summit has them as well as MSA and others. They are not hard to tune, but you should get the book that identifies what are mixture adjustments, what are speed adjustments and what are balance adjustments.

[jimzdat]

Also consider going to www.ztherapy.com and ordering the "Just SU" video--4 hours of info on rebuilding and tuning the SU carbs

I had the video when I had a SU equipped car, and found it to be a very useful tool, and well worth the 20 bucks

[Guest Anonymous]

Go to Eric Neyerlin's website www.zparts.com

Select ZP Tech from the top navigator & read my article on tuning SUs.

 

I hope this will enlighten you.

 

It sounds to me like you have a pretty bad air leak somewhere in your induction system. Could even be your brake booster... How do your brakes feel??