Jetting My Dellortos

\/\/olfsburg\/\/olf · Post by **\/\/olfsburg\/\/olf** » Tue Nov 20, 2007 3:04 pm

would you be willing to lend the tool, or at least supervise while I balance my machine?

Post by **calooker** » Tue Nov 20, 2007 3:09 pm

My tools like my books are not to be loaned out, sorry, I could take a look in Dec when I am on leave, at the moment I dont even have time for myself.

\/\/olfsburg\/\/olf · Post by **\/\/olfsburg\/\/olf** » Tue Nov 20, 2007 3:28 pm

ok man, no worries I know how it is.

again, thanks for the advice, it has been copied, pasted , printed and filed for reference.

Post by **eben** » Tue Nov 20, 2007 3:41 pm

Just my 2 cents... Make sure you have a quality linkage and that they don't have any play that they shouldn't have... You dont want the 2 banks of cylinders getting different ammounts of fuel....

\/\/olfsburg\/\/olf · Post by **\/\/olfsburg\/\/olf** » Tue Nov 20, 2007 4:00 pm

yeah, I know. The linkage I got is the type with the hex bar over the alternator.

The first time we tried we tried the "listening" method with the piece of hose. Man that was a disaster!

Then we balanced it we used the vacuum gauges I bought. But I guess thats no good either.

It never stops does it...

Riftvalleyvw · Post by **Riftvalleyvw** » Wed Nov 21, 2007 8:13 pm

You can make your own manometer if you need to. They can be much more accurate than a Snail type syncrometer. The snail type is mainly only used to sync at Idle. The Manometer can be used at any speed as long as it is designed for it.
But the syncrometer is eaiser to use than a manometer. If you are desperate, I will send you drawings on how to make your own.
Jim

Post by **eben** » Wed Nov 21, 2007 8:40 pm

I have an original west german MotoMeter sync (pea in the tube kind) with adjustable sensitivity... really nice

\/\/olfsburg\/\/olf · Post by **\/\/olfsburg\/\/olf** » Thu Nov 22, 2007 8:20 am

Hey Jim, that sounds good, I really want to sort this out. e-mail: vuk@thegoldfish.co.za

thanks

BARON · Post by **BARON** » Thu Nov 22, 2007 11:30 am

Hi Riftvalleyvw ( shit man what a long name cant you shorten it a

bit)
Why dont you send those drwgs to the site and we can all learn from iy
thanks
Baron

Post by **calooker** » Thu Nov 22, 2007 12:08 pm

I also have that little item Eben refers to but found the Snail to be more accurate. If carbs are Synced @ idle then there is no need to do it @ higher RPM's, Jim, why would you need to do that?
I also have a colourtune seethru plug which I use to see if mixtures/jetting are Ok @ higher rpm's and recently got my paws on a CO2 machine but not got to use it yet, maybe with all these goodies I can finally sleep in peace when I set up a set of carbs in future.

Post by **eben** » Thu Nov 22, 2007 1:25 pm

I reckon higher RPM test might show you if you are haveing issues with a dodgy linkage such as I had..... ie. if your balanced at idle and it then becomes unbalanced ... you more likely than not have an issue with your linkage....

Post by **calooker** » Thu Nov 22, 2007 1:41 pm

Yes, good point Eben

\/\/olfsburg\/\/olf · Fri Nov 23, 2007 10:41 am

does anyone know if any place in Joburg sells those snail meters?

edit: also the dellorto superformance handbook?

Post by **calooker** » Fri Nov 23, 2007 11:17 am

Import only.

\/\/olfsburg\/\/olf · Post by **\/\/olfsburg\/\/olf** » Mon Nov 26, 2007 7:48 am

ok, so I checked my jets this weekend and I am running:122 main, 180 air, 52 idle and 33 pump.

That should be fine, but the car is running rich. Also according to aircooled.net my idle should be carb size*1.25, which gives me 45! Furthermore the guys goes on further to say that at altitude (which we are here in the highveldt), you should actually run it leaner. So I think I will try 45 or 50 idles...

what say you masters of the flat four?

PS. I am also quite certain that my carbs are not balanced, is there a shop I can go to to get this sorted?