I have been trying to get everything settled with my Toyota on the rare sunny days that have been coming my way and i can't seem to get the tuning of the carb or the timing right.

So alas, i am taking it in to have the timing done and carb adjusted "professionally".

Is there anything i should mention to help the process go smoothly. The guy says he has done tons of these before and it should not be an issue. Trouble is that i don't want him to tune it to stock.

The engine has been rebuilt, bored and with a cam, offenhauser intake added, weber 32/36 rebuilt, looking for header and exhaust. So it is not quite stock anymore.

What should the timing ideally be set at, and what kind of fuel mix ratio do i want? Also, should i give it a tune up (cap, rotor, wires, plugs, and fluids) before or after i take it in to get tuned?

 

Do you have additional jets for him to play with? For the tune up, I would do everything but the spark plugs before the tuning, but give him a fresh set of spark plugs correctly gapped for him to install since he will probably read them while tuning the timing and air/fuel. If your engine is modified he can't tune it to stock because it will not run properly, and I don't think timing changes that much unless you increased the compression, but maybe the jets that are installed in the weber now are not the correct ones and that's why you had problems tuning it (assuming you read the weber tuning how-to).

 

It could be the case that the jets in the Weber now are wrong. They are the ones that were in there when i bought it and rebuilt it. What size is recommended? I have indeed read the weber tuning how-to, many times over now.

 

Just some food for thought, the Weber doesn't come properly jetted for a 22r, it comes with their factory sizes. Even at high elevation(4,000-9,000') I had to go a couple jets larger in the idles, with no performance enhancements I was aware of except a random 4 into 1 long tube header and 2.25" exhaust with a new stock cat. The mains are probably sized ok, the 22r doesn't rev high enough/flow enough air to require very much high end tuning, and the idle circuit takes care of your fueling from idle up to almost 2500 anyway. It is suggested to go up one size on all the fuel jets at once as standard practice, though.