weber jetting dcoe 45 bmw 2002

J

james

New member
need to solve my problem.car doesn't pull to 7000rpms.have no misfire. 2000cc motor 45dcoes 15/8" header stock exhaust from collector back.290 schrick 9.5:1 cr fully ported head msd ignition 46x38 valves.Specs for carbs are as follows. 36mm venturies,f16 emulsions,55 idle,45 pumpjets 50 bowl jet fuel pressure 4.5 at idle and drops to 3.5 when running 32 degrees total advance. Car pulls strong to about 6000 only Ive been teched out by a guy named steve at top end performance and he said that is what he runs and it pulls to 8000 no problem. anybody out there know what is up by personal experience I bought several items off the guy but every thing seems to not work and the guy keeps selling me overpriced stuff
 
Originally posted by james:
Specs for carbs are as follows. 36mm venturies,f16 emulsions,55 idle,45 pumpjets 50 bowl jet fuel pressure 4.5 at idle and drops to 3.5 when running 32 degrees total advance.
I'm thinking a good baseline which should get your motor running well would be to start at:

38mm chokes
145 main jets
F16 emulsions
180 air correctors
40 pump jets
50f9 idle jets
4.5 aux vents
Click to expand...
Click to expand...
 
oh, one other thing, is your cam timing set properly? Because you seem to have the carb set about right by the looks of it.
 
What I want to know is how you got valves that big into the head??? There's not 5.5mm between the valves.

------------------
MARRS #25 ITB Rabbit GTI
SCCA 279608
 
all my work is done by purespeed metalworks in riverside califor ni A one of the last true porting cylinder head facilitys unlike typical shops these days who own machine shops and think they know what is up on porting, valve tricks ,seats etc. check it out at purespeedmetalworks.com
 
You must log in or register to reply here.
Back
Top