I used to run a Mechanical Fuel pump and a 265deg Kent NVO camshaft. The carbs ran, and were setup perfectly.
I've now installed a AST2 290deg Camshaft and an Electronic Fuel pump and Regulator. So i went for an RR setup. Without the carbs being setup, the car was **** under 3k, but once it got onto the powerband, it pulled very well from 3-5k, and i expect beyond that. However, i didn't load it past 5 untill the setup was done properly.
After the first visit, the Air Correction Jets and the Mains jets were all swapped. The car was now responsive and great under 3k, but after the initial 3/4k "pull" it flattened off, and didn't really pull in an exponential way that you'd expect.
I returned, and said i wasn't happy and they said they'l happily look at it to try and improve this.
Now, there is a noticeable gain in power on the top end, and it carries on pulling like it should. However, it's gone alot worse under 3k (maybe to be expected) BUT i've now got a missfire/splutter on light acceleration around the 3.2k mark (i.e when you sit at 74 on the motorway, which is 3200rpm, and lightly accelerate there is about a 0.5-1 second splutter/misffire.
This is obviously not 100% right. However, i'm being told that i can't expect a set of "old carbs" to beable to be setup perfectly. I.e to have a smooth pulling setup, i need to buy Brand new carbs !
Can anyone suggest a place in the north west that could sort this, Or suggest the problem... ?
Thanks Nick
