Paul (Notts)
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| posted on 9/3/08 at 05:49 PM |
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Carb levelling – Webb 500 RV8
The carb sits at a slight angle on the engine. Should I fork out the £30+ for a levelling plate. I have read that it is needed to stop the float
chambers from over fuelling the engine.
Any advice welcome.
Paul
 
Rescued attachment nov06 049.jpg
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mark chandler
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| posted on 9/3/08 at 07:49 PM |
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Depends upon how level the engine is in the car.
Lots of manufactures have the engines down a bit at the back hence the requirement, how level is your engine compared to the ground?
If flat then yes.
I ran a holley, not sure if the weber is the same but you set the float level up by removing a bung, then adjusting the float hieght so that fuel just
started to weep out of the hole.
Regards Mark
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Bob C
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| posted on 9/3/08 at 11:49 PM |
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I don't think any practical carb can possibly be so ultra sensitive about angle - otherwise the car could not accelerate, corner or brake......
or go up & down hills....
Your picture looks absolutely fine ;^)
half a G of acceleration is equivalent to 30 degree angle
Bob
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Simon
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| posted on 10/3/08 at 12:42 AM |
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From the RPI website
"This is an area with little information available, but in our case the truth is out there working, Among many other successful applications and
many hundreds of units sold, we sponsor a 4.6 Rally 4WD in Dubia that has been using the Weber 500 with Edelbrock High Rise intake for over 2 years.
It provides huge torque for race-spec 4WD off-roading, and has superb manners when on road in between rally sections. This vehicle is expected to leap
from 60 ft. Sand dunes and take sliding corners at flat-out speeds. (4.6 RPi Race Spec Engine) and the results with the Weber are superb: no flat
spots, no stalling engine, no loss of power and with unrivalled throttle response.
A reason for this may be the location of the Float Bowls. On the Holley (renowned for problems off-road) the float bowls are mounted front and rear,
this means that when on steeper inclines the fuel transfer hole becomes flooded or starved and would normally lead to engine stalling, but on the
Weber the float bowls are mounted on the sides and the fuel transfer is in the centre, so no adverse affects are experienced on steep inclines. This
makes good sense as all off-road vehicles can stand steeper climbs and descents (rather than traversing around steep inclines) before becoming
overbalanced."
So, I'd say no, it doesn't need levelling. You could give them a call to confirm or otherwise if you need convincing
ATB
Simon
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