The V8 Owners Forum -

Changing the pump orientation [up/down] sadly didn't fix the stumble, still going rich/lean thru the corners I'm going to have a look at the carb to see if as I Suspect the opposite side to the fuel feed on the carb can take another banjo connection and in which case add another fuel feed to see if ...

Fact pump rotated, now up/down with feed in/out at the bottom Filters - Between tank and pump, facet filter and king filter reg in the engine bay checked and are all clean Angelsey track day on the 8th, fingers crossed it has at least made a difference if not resolved it completely. I'll let you kno...

Hi GD Thanks for your reply, I'll check the floats but I don't there's a problem as they sit left and right. I did change the floats for off roaders and ensured the pivot range was correct but that didn't change anything. Maybe changing the pump so it is up/down improves/solves it as per Ian, can bu...

Hi Ian Pump runs North/SOuth [front to back with the Inlet/outlet at the back. Inlet is at the bottom So overall could be worse but there is room with mods to the fixing plate to turn 90deg so it's up/down with the inlet/outlet at the bottom I'll clean the pre filter on the pump and the inline one b...

Hi Ian Facet redtop, correct Near tank, virtuall underneath it Orientation of pump and feed, I'll check in the morning. When you say north south do you mean front to back of car or roof to floor ie vertical? Latter might be tricky Clean pre filter, will do but fitting the red top was one thing we tr...

The previous owner did the V8 conversion and fitted the Edelbrock 1404 carb. It's only when really pushing it thru corner that the 'stumble' shows itself i.e. on a track day. On the road it's never pushed quite that hard
I'll keep looking for a solution
Cheers
Mark

Fuel level in the tank? It does it even with a full tank otherwise we were considering a swirl pot

If we can fit a 2nd fuel feed into the carb as I think might be possible just looking the unit and without dismantling as yet, do you think it would help or make it worse?

Cheers
Mark

Hi Dave
Fuel level - I've checked the floats are correctly set and the king filter regulator is showing fuel well up towards the top if that is what you mean

Baffles - These are already fitted
Thanks
Mark

Hi I've a MGB Roadster 3.9 V8 230bhp with Edelbrock 1404. Goes really well on the road and on a track day [not racing] very well in a straight line but as soon as we enter a corner and until we [son and I] begin to straighten up the engine stumbles/stutters. Facet fuel pump via a King fuel regulator...