mainfold should it run hot or cold etc

dubai Seriously Crusin Dubber

161 posts · joined Oct 2009 · 16 Nov 2011, 9:33 pm

#872573

I recently built a new 1600 motor and put a new rebuilt 30 pict carb on it. With my old 1200 engine28 pict carb the inlet manifold ran cold and even had condensation. The new 1600 with the 30pict runs hot with no condensation so far I have adjusted the idle screen and the air fuel mix screen what else do I need to do or is this normal whats it meant to do? thanks guys

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 · 16 Nov 2011, 10:14 pm

#872580

Hi

The preheat tube should sizzle if you lick your finger and touch the heat riser. The old one was probably blocked.

Steve

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 16 Nov 2011, 10:38 pm

#872585

dubai wrote:I recently built a new 1600 motor and put a new rebuilt 30 pict carb on it. With my old 1200 engine28 pict carb the inlet manifold ran cold and even had condensation. The new 1600 with the 30pict runs hot with no condensation so far I have adjusted the idle screen and the air fuel mix screen what else do I need to do or is this normal whats it meant to do? thanks guys

Hi
the exhaust gases run thru the bottom of the inlet manifold from one side to the other heating it up to stop the carby from icing up..
so, its normal...
I had to change My manifold as the heatriser part was blocked and rusted out..
My carby used to ice up when the temperature was cold... like 0-8 degrees C

cheers

LEE

LEE

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

dubai Seriously Crusin Dubber

161 posts · joined Oct 2009 · 17 Nov 2011, 7:32 am

#872622

Thanks guys