DRLA 36s and how to stop my bus backfiring?

At TE , I could see from the change in the patina on the throttle end stop screws that one side of Sarah's set up has been adjusted about 1mm on the idle end stop. The two carburettors were visibly quite different where the screws had ended up being set.

 

It's a pity nobody dared dive in and see what the heck is going on with these carbs. It might have taken a while to strip and inspect but it was a chance to get this done for her and she'd have learned a lot in the process. Has TE really become so standoffish?

 

Didn't realise it was late Sat obviously, I wasn't there. To be fair it's ebbed and flowed a bit, as has the expertise of the attendees - I remember a year when nothing tech was done at all and as you know it's quite a while (6-7 years) since I was last there.

 

Hindsight is a wonderful thing. lol
The book isn't really any help (I have it). It even details how to set the float heights incorrectly.
Plenty exploded diagrams on the internet.
Nobody with Dells at TE is bad luck.

 

I don't know about that but I do know if he sets himself to learn about ANYTHING he will not stop until he has a complete understanding. No half measures for Vanorak, the wide variety of subjects he knows in excruciating detail is a thing of wonder.

 

Yup and the advice from Vanorak, reiterated by Dickie on Sat afternoon who does run Dells but was a passing attendee without a bus, was that before any major changes were undertaken was to set the float heights.

I know nothing, run FI and have had zero carb experience since 2008 but I do know that if advice has come from Vanorak and validated by Dickie then it's probably good

 

And if someone unwittingly follows the Dell book or pictures found on the internet from said book, the float height and fuel level will be much too low.
The book shows carb top lying on it's back, it must be held at 90 degs with the float hinge at the top because the valve is spring loaded.

 

I think Miss Scrooge is going to have to take the bull by the horns, take the carbs off, check the float height, check the pumps work correctly, change all the parts as detailed earlier, buy a snail air flow meter and have at it.
There's a first time for everything.

 

I don't think so, you're not daft, you know how to work through things logically.
Send them to me if you want, I'll give them a going over, change all the bits and set them up on my bus, which believe it or not will be almost correct for yours too. Idle balance will be right, mix will be very close and there's nothing else to adjust other than you ensuring the linkage starts to open both at the same time.
I'm pretty confident about this, when I took mine off my racy big valve 2020 type-1 and put them on my 2.4L not racey type-4 I didn't need to adjust anything. Even the mixtures were right.

 

That is a fantastically helpful and generous offer, and will result in a far better solution than giving someone hundreds of pounds to rev the engine a couple of times and store the van overnight

 

lol, I just want to read scrooge saying she loves her Dells and her bus is running smoothly. I'm afraid in the world we live in where ladies and cars are involved, most often a garage will take the *******, bull Marmite and empty ye old wallet while being condescending. Fact. I've always enjoyed redressing the balance a bit.

 

I can only take so much boat hacking at a time! Nice little evening job checking your carbs over and a few hours fitting/ running them on the van - pretty sure they will fit my manifolds but I'll look into that prior if this is something you'd like me to do. I wouldn't mess with my linkage or actually drive anywhere because I don't see why I'd need to if I warm my engine up a bit before I swap my carbs for yours, and your carbs linkage levers (the bit attached to the carbs) definitely won't be like mine so it wouldn't be helpful. I would need to bolt them on to my manifolds with your gaskets as mine have dell40 imprinted into them and dell36 might be different enough to cause an air leak so I'd need those too.
I'm up for it, I wouldn't have offered otherwise.

 

You're making excuses Sarah! You know the advice was given back in May x.
Deep breath, send them to Steve, Alex need never know
Remember, it's just nuts and bolts and a process