Newly worked Xflow causing a headache

[kitlooney1000]

Have had my 1600x/flow, worked into a 1700. the crank and flywheel lightened and balanced, a 244 cam installed and all bolted together. It runs with a ported/ gasflowed head Inlet and outlet, and a webber 28/32 twin choke carb, and also has vacuumless electronic dizzy.
It runs well, has a lot of pick up on acceleration, but refuses to idle properley, it runs for maybe 5-6 secs on idle the tries to die, if you blip throttle it keeps it running.

Any thoughts as to what my problem is ? Some say the flywheel is to light to keep it running, some say i need to rejet the carb.

Also, was thinking of putting twin Zenith Strombergs on, ( manufacturing the manifold is no problem), would these run the tuned engine ok. They came of an 1850 dolomite?

[KITT]

Have you tried screwing the idle screw in a bit to increase the idle RPM? Also, what advance are you using for idle?

[kitlooney1000]

The engine is already idling at 1150 rpm. the advance on the dizzy is set at 16 degrees of the timing mark.

[grahambell]

Have you checked for dirt in the jets?

[kitlooney1000]

The carbs worked fine before the engine work was done, i assumed they would still be ok. thats the next thing to check, thank you

[justin s]

did the carb work with the 244 cam before? That sort of spec cam would be much better off on twin 40 dcoe's.Not saying it won't run,but the 244 is a bit of a lumpy cam.Is 16 degrees the normal timing figure as I used to set it about 14 btdc.It does sound like a carb problem.Did you remove the carb from the manifold or the manifold from the head? Could you have an airleak through the gaskets or not blocked off a vacuum feed for the carb,so when it goes into tickover it can't draw enough fuel/air in because of it?
Don't bother with the strombergs,more aggro than they're worth.How are you going to change the needles and bits to fit a modded engine.Just stick to webers.

[kitlooney1000]

Carb worked fine with original cam, the new one and the engine work have all been done together. Might see if i can get a 38 DGAS or 38 DGES. Might work better. Dont want side drafts really as it means a hole in the side of my shiny locost bonnet, already one in the top. But i had the strombergs laying around so wondered if they would work. All gaskets are new and tight, might have found a leak in vacuum port on inlet manifold. perhaps that the problem, just waiting for the Defcon a to go off.

[kitlooney1000]

Yep leak in inlet manifold causing the problem.

Purrs like a kitten now (well, bit louder)

Thanks for your help chaps

Lew