Went to a carbie Guy today FK Me Dead dont allways trust What some people say what is a CARBIE SPECIALIST ???? I Had A $180 carbie Chinese Copy of the nikky A12 From Ebay.
Well i let him do his thing and he allso had a bucket of mine containing Three old carbie,s and spairs that he asked me to bring just in case???
SO CUT A LONG STORY SHORT I PAID $220 AND IAM GOING BACK TOMOROW CAUS ITS NOT THAT MUCH BETTER FKEN FLAT SPOT STILL THERE.

Sure its Carby related? You been chasing thus flat spot for ages now. Not timing? Dizzy or some thing elec related?

Even crap in tank blocking the fuel pipe?

Yes mate well allways check the timeing and the car Has ELEC DIZZY
for months now. So Iam going back to this guy 2morow.
He said to me that thay are good Carbies Then he said the problem is
Nobody Know how to tune them??? Maby I should jumped into the car and Backed
out of his Shop ASAP LOL. I do know of one other guy thats is probley
THe one i should have gone to before. But i dident know much about him
Other thay his work shop look,s like he would and does charge more maby I should have gone to him years ago. He has said much the same about the nicky hitachi carbie.And i did ask a rough cost for this guy to rebuild he said maby $400

I am no expert but my engine suffered from flat spots when under load at higher revs.
I adjusted a number of different things to fix the problem however if the problem has started since the introduction of the elec distributor than i would start there. What coil are you using with the elec dizzy? Are you still running a ballast resistor?

What elec dizzy do you have?, i've had good experience with the ebay carbies but the ebay elec dizzy needed rebuild from new, it would advance but the internal springs wern't strong enough to return the advancement when the revs dropped

Yes I got a elc coil that does siut the car but my Machinc got it Yes it the one that still use,s the ballest restior...I got from D when i bought a block from him he Said to me i was a plusar N15 one that Been converted But we had a bit of troubel Fiting it So thats y iam going to to take it to A Auto Election. I have other Thing,s Elc that need to be Done as well.

bump

Long shot but your exhaust wouldnt be too small or too big. Had this problem with my stanza many years back. Worked L20b with a 350holly and stock exhaust with ok extractors. Ran like poo until I got a 1.5inch welded up.

Its the the factory one that was on the car.
But the Flange gasket at the mainfold Has all way Leaked a littel bit.
Because unlike my 1200 one i canot replace it I did go to the EXHAUST shop and he put a bit of (Gasket Gue) On it but I dident rember to tighten it up in a few days like he asked????Buger doooo

Well... there is your problem... stop wasting money and fix your 20 cent gasket!