Brain fart question 914-6 Options

[mb911]

So I am helping a member put brakes on his 914-6 conversion and then put carbs on it. He previously has a poor working sniper setup. It ran ok prior according to him. Then they switched to a 123 dizzy and removed the MSD ignition and then took to a tuner prior to my part. It ran much worse once the 123/MSD removal. The owner decided he was done with his sniper setup and asked me to put carbs on. I did that and for the life of me we can’t get it to run right. Starts pretty easy and idles decent. When I go to throttle up by hand on the cross bar it doesn’t want to accept all the fuel and shoots quite a bit back up through the horns. My suspicion is a major timing issue as in 180 off. The carbs are new and setup up by Dave Chenny so very confident in them. Seeing as the car is 1.5 hours away each visit I am looking for a bit coaching here. What else should I be looking at? The engine is a fresh 2.7 not built by me with about 1000 miles on it.

Help with some ideas please.

[flyer86d]

Ben,

Did I read that when the MSD was removed, it was not replaced with a cdi? When I installed the 2.7 in my 68 911, I initially started it without a cdi and it did start and idle. In subsequent starts it would do exactly what you describe. It would idle but not take any throttle and backfire and spit. I chased the same ghosts that you are verifying both cam and ignition timing, fuel pressure, float level, initial carb setting, tried pulling what is left of my hair out and finally installed an MSD with the stock 1975 Bosch points type distributor and it runs like it should.

Charlie