Time to rebuild my DGVs (q's about sync, etc.)

[mimregi]

OK, I have the books, I have the diagrams and my car just backfired a split in my muffler... so it's time for me to bite the bullet and tune the damned thing. I have never done something like this, but I am confident in my ability to learn. That said, it seemed prudent to ask a couple of questions here, because I am a fan of free advice =)

First thing, I want to make sure I have all the tools I need. IN addition to the basics, I am getting ready to order my sync and adapter. I am pretty sure I have the correct ones, but I would rather be corrected (and possibly ridiculed) publicly than get the wrong things:

http://www.thezstore.com/page/TZS/PROD/TE/60-9990

http://www.thezstore.com/page/TZS/PROD/TE/60-9976

(does this get me the same thing:

http://www.thezstore.com/page/TZS/PROD/TE/60-9965

?)

Is there anything else I should make sure to have? I'd like to do timing adjustments as well (also never done that), is there anything I may need?

If anyone has worked with DGVs before, any general advice? Any gotchas or things to look out for? I have the braden book and the haynes manual, plus a service manual on CD ROM, but most of those assume some general carb experience, so any beginner advice would be welcomed =)

Thanks in advance!

[240ZMan]

There is a ton of information on this site about tuneups, so I won't repeat it here, just do a search.

With regard to the DGVs, they are really easy to tune, once you have them jetted properly. Assuming yours are, there is a straight forward process from weber on how to set them up which I've attached.

And pay attention to the instructions' comments about what is normal for how many turns out for the idle mixture and idle speed. If you find you have to be outside that to get your engine to run, but it doesn't run well, you may not have the right size jets.

There are some who put the DGVs down, but mine were great for a stock motor. I will say that once I rebuilt them, they were a lot smoother at low speed part-throttle. If you do everything right and find you still have driveability issues, that might be something to consider. It's not hard, just time consuming since you have to do everything twice - no different than for SUs

Good luck!

Tuning DGV carbs.pdf

[mimregi]

That is fantastic, thanks a ton! =) It is much more step-by-step which is kind of what I need.

I just got off the phone with Motorsport and the guys told me the synchrometer I linked above will not work with the adapter linked above, only the synchrotester (which I also linked third, but with a question mark). Does that seem right to anyone? I'm going to take his word for it, but I surely wouldn't mind corroborating opinion.

This:

http://www.thezstore.com/page/TZS/PROD/TE/60-9965

With this:

http://www.thezstore.com/store/merchant.mvc?Screen=PROD&Product_Code=60-9990

and not this:

http://www.thezstore.com/store/merchant.mvc?Screen=PROD&Product_Code=60-9976

which kind of makes sense now that it has been pointed out to me...

[240ZMan]

I just got off the phone with Motorsport and the guys told me the synchrometer I linked above will not work with the adapter linked above, only the synchrotester (which I also linked third, but with a question mark). Does that seem right to anyone? I'm going to take his word for it, but I surely wouldn't mind corroborating opinion.

I don't know why he would say that. I just went out to the garage and fit my synchrometer into the rubber DGV adapter with no issues. I also have a syncrotester that's more round than the oblong base shown in the picture and it works too.