14 replies to this topic

[Dusky]

Hi!

So i got the car running on the weber, and everyrhing is fine, apart the fact that I cant use more than 3/8 (orso) of nu throttle, else the car wil die fully. Even when I go past that poinnt very slowly. Would this indicate a blocked jet orso??

Cheers

[nicklouse]

It would indicate that you have not been anywhere near a rolling road yet.

Get it set up.

[Dusky]

It would indicate that you have not been anywhere near a rolling road yet.

Get it set up.

Dude. I'm not that stupid. But a car shouldn't be doing this : , even when wrongly setup.

 

Jets that are in there are advised by dellorto ( eurocarb), so shouldn't be THAT far out.

[petey81]

Sounds like something is blocked or restricted.
What is the fuel flow like?

[Craig89]

That's 99% a fueling issue my friend, unfortunately that is exactly what they do when not set up correctly

[Dusky]

Fuel flow is okay, and I can feel fuel at the back, so I hope/ think the full throttle venturi isnt blocked, but pump may be increased, when I really baby the throttle it will go without hesitation

[Dusky]

Just noticed that there aren't any seals under my pump jets ( these are fitted normally) will probably make a difference...

[gazza01]

You dont have any air filter on so you will be leaner that way.

[Dusky]

Air filter is fitted now Was only for initial startup, of I had backfires that I wouldnt burn the filter ;)

[Dr s]

It's doing it when you give it the beans. That's driven by the pump jet from what I remember setting up the twin 40's on my vdub. Have you set the amount of fuel being pumped?

I think the weber manages steady state fueling via static venturis (jets) but increases engine speed by pumping in fuel.

If you spin up on part throttle does it bog? If not then I'd expect the jetting to be 'broadly' there and the pump actions is out.
You need to isolate which jet is doing what where and when to fettle it.
Nick

[Dusky]

It's doing it when you give it the beans. That's driven by the pump jet from what I remember setting up the twin 40's on my vdub. Have you set the amount of fuel being pumped?

I think the weber manages steady state fueling via static venturis (jets) but increases engine speed by pumping in fuel.

If you spin up on part throttle does it bog? If not then I'd expect the jetting to be 'broadly' there and the pump actions is out.
You need to isolate which jet is doing what where and when to fettle it.
Nick

Yeah, the basic problem is the part between low throttle and full throttle, when giving it the beans.

This is indeed gouverned by the pumpjet, wich is missing a seal now, so I hope the seal was just the problem

On full throttle the aux venturi's are the main supplier of fuel, and these are in right, and shouldn't be blocked... So it is all down to pump jet

Pump jet is a '50', wich almost all mini's in vizard's book use, so that should be okay I think?

 

Cheers!

[Dusky]

Changed the E-tubes to those from my dads race mini ( F9) 

this was the result with F9 tubes and 2 new spark plugs ( 2 were bad, although they were almost new):

 

still waiting on my mainjets and aircorrectors, but its a very good start!

Edited by Dusky, 02 January 2015 - 05:16 PM.

[Dusky]

 What's this part ( to the left of the top lid) turns out that those F9's only worked well because I didn't fit the top lid with a good seal.
When I loosen the top lid it accelerates good! So I fit the part to the left of the toplid and the car runs great, even with the F16 E-Tubes!

[Bubblebobble]

I bet your glad you didnt ' get it set up on a rolling road ' now !

[Dusky]

I bet your glad you didnt ' get it set up on a rolling road ' now !

WOuld have been quite stupid money

Goes even better now with the F16's again! I knew it had to be somethign really stupid seems the float lid is vented one way or another!