Question about fuel pooling in the heads

[Sigurd]

My new motor has been running pretty well for about 30 minutes. I took the carbs off to install the motor in the car and I see dark brown gas pooling in all four of the intake runners. Granted, I haven't given it a good tune yet and I know it's rich because it makes my eyes water if I get close enough. I figured I have enough heat because I have duals. Is this somewhat normal? Or is it "normal" to have some of this happening?

[juki48]

check this video out if you would like to learn about fuel puddling
http://video.google.com/videoplay?docid=-1671092540772647555&hl=en

and yes, it is normal, however the less puddling you have the better. intake design should always consider fuel puddling.

[miniman82]

Sounds like it's running too fat...
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Build thread: http://www.thesamba.com/vw/forum/viewtopic.php?t=212747

[Sigurd]

Oh that I know for sure. I was behind the thing trying to get a good look at an oil leak and my eyes kept tearing up.

I need to drive it, seat the rings and then get my wideband on it. Maybe I'll do all that first and see what happens.

[snookerdude]

if you run that mix too rich, raw gas will clean the oil film off your cylinder walls and wash out your rings and grooves. this will make your rings seat in about 10 miles instead of 200 miles. but i sure wouldn't do it.

[nsracing]

If you want to cook the rings, run it rich like that. YOu have to set your floats to proper height...might be causing the flooding. Or could be your needle valve. With WEBERs and Dells, gotta keep the book close by.

Also, set the carbs to what engine displacement you have. Do it by the book. But I will stay close to conservative side. Find a good all around venturi size vs. operating RPM range....and then jet for that.

All you are doing is dumping enough fuel into atmospheric air compressed by the motor.

[Sigurd]

Carbs are rebuilt/cleaned/blown out by me. Floats are set by the book; 5mm closed, 10mm open. 34 vents on a 1915, 55 idles, 140 mains and 180 airs. Screws are about 3-3.5 turns out, which is what it took to get it to stop popping out the exhaust.

[Guack007]

Are your Carbs 40 or 44 size? IDF? HPMX? DRLA?

Just curious, 'cause if they're 40IDF carbs and 34 vents the pooling may be caused by lack of pressure drop through the venturi since its a bit big for a 40.

Just a thought

[Sigurd]

40 DRLAs and 34 vents.