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 Post subject: Weber DCOE Float level
PostPosted: Thu Aug 12, 2010 9:05 pm 
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Hi everyone.

am in the process of rebuilding my 45 DCOE 152 weber and have a question or two if someone could enlighten me.

i have numerous settings for the float level. this carb has the black plastic squarish shaped floats and i am pondering on a few things.

1 - do i measure at the farthest end of the float from the needle and seat? or just at the tip (closest) part to the top cover?

2- i have a few different settings. when held at the verticle to measure the closed level, i have a few settings for the 152 carb, 5.5mm, 8.5mm or 12mm. which level do i go for?

3- the max open level, i have read needs to have a total travel of 8mm. do i take this measurement from the farthest end of the float travel or the same place i measured the closed setting?

your help is greatly appreciated.

Jason 8)

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PostPosted: Fri Aug 13, 2010 4:44 pm 
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Spoke to numerous weber specialists today and finally got the right information/settings for the 152 version floats.

the measurement is taken from the closest point on the floats to the top cover. using the same reference point, you measure the max open/swing setting.

i was told 12mm when held at the verticle just resting on the needle/seat, and a float sweep measurement of 8.5mm measured at the same reference point as the closed measurement.

hopefully this may help any of you that may have a DCOE 152.

A big thanks to Ken at Mini Automotive in Ipswich QLD, he is always very helpful.

Jason 8)

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PostPosted: Fri Sep 24, 2010 10:59 pm 
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recently i suspected my float level was to high, can anyone tell me if this looks to high or to low?

Image

looks low to me :shock:

i had a few instances where overnight fuel would leak into the manifold and cause the engine to miss when colded started the following morning. i thought this may be a high float level.

any suggestions?

8)

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PostPosted: Sat Sep 25, 2010 4:09 am 
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jester99 wrote:
Spoke to numerous weber specialists today and finally got the right information/settings for the 152 version floats.

the measurement is taken from the closest point on the floats to the top cover. using the same reference point, you measure the max open/swing setting.

i was told 12mm when held at the verticle just resting on the needle/seat, and a float sweep measurement of 8.5mm measured at the same reference point as the closed measurement.

hopefully this may help any of you that may have a DCOE 152.

A big thanks to Ken at Mini Automotive in Ipswich QLD, he is always very helpful.

Jason 8)


care to stick up a pic on how you were measuring??

I use a drill bit of the correct dimension in what I hope is the right place to set the float level.

The pic in your last post only shows the bowl and not the float in place, so you will need to section it all when they are together to really see it :wink:

cheers
michael

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PostPosted: Sat Sep 25, 2010 12:59 pm 
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i measured as per the weber procedrue listed in my weber book.

holding the top cover assembled with the float vertically, you measure the float heights with out depresing the ball on the needle & seat, and set the measurements while resting lightly as per your model weber carb etc.

i used both a few different type drill bits, a set of long tipped verniers and a good careful eye :lol:

my question above was not about looking at the float itself but the level of the fuel in the bowl. although the measurements are correct - or should be if i am doing it right- but the fuel level did not look right. if fuel was leaking into the manifold because the float is to high, you would expect to see a fuel level high enough to actually poor over into somewhere that would lead to the manifold at rest.

if anything the fuel level in the bowl looks low. but i am just going on other carb fuel levels that i am used to seeing.

this is my first time playing with a weber so the level could in fact be right.

interestingly i have not had the issue i had with flooing for a week or two now. i was also thinking this may be caused by a faulty fuel pressure regulator.

not sure

8)

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PostPosted: Sat Sep 25, 2010 1:45 pm 
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This is not my pic, but a pic off an alfa rommeo website discussing the same subject. the size specs on this pic are for alfas and a weber 151 not a 152, but they have the same top cover and float setup for viewing purposes.

Image

It pictures a similar method i am using to measure the float. as i said i am also using a drill bit and/or similar sized shafts or thin steel rods, plus a set of verniers to make sure sizing is acurate and a careful eye.

has anyone eyeballed their float level after setting it up? actually taken the cover off and looked at how high the fuel level is on the bowl? is there any other measurement to cross-check with?

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