5 replies to this topic

[brad-the-bear]

hi ive got a weber 45 on a derrington manifold. the current set up that comes with the weber is 

choke 36mm

main jet 175

air corrector 170

emulsion tube f2

idle jet 50 f9

pump jet 55

aux venturi 3.5

needle valve 225

 

my engine spec is

1380cc

ported big valve head

kent 276 cam

lightened flywheel

10.5.1 compression

all balanced end to end then all together  

 

if you could give me some advise that would be great. i know it will need a rolling road set up but i could do with running it in before hand and i don't want to be trying to run an engine in with the wrong jets  

 

cheers

bear. 

 

[brad-the-bear]

bump

[KernowCooper]

I can only give you what I have on file, but its only a starting point.

 

Have you run it at all before?

 

36mm chokes

F2 Emulision Tubes

4.5 aux Venturies

160 main jets

180 air corrector

45 acc pump jets

45 F9 idle jets

Edited by KernowCooper, 09 October 2013 - 03:03 PM.

[brad-the-bear]

cheers pal!!

no  its not been run yet, in fact the engine isn't together yet.

 

what would it currently be jetted for then?

 

bear.

[KernowCooper]

Set up now looks like the motor needed a bit more fuel, possibly something with a wilder cam but because engines vary it is set richer than my base settings, which could be to rich for your spec, its never a good idea to run a new build to rich due to bore wash

[brad-the-bear]

cheers pal! and thanks for sharing your knowledge