| mhop2 |
Sat Mar 31, 2007 6:52 pm |
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My 73 SB 34 Pict 3 had icing on the intake for a long time. I had aftermarket exhaust and air filter and Pierburg carb from cip1. I heard some bad things about all of these combos so I have since:
1- Had original VW German carb rebuilt by Card's Carbs in WI (did GREAT job fast!)
2- Went back to old air filter assembly with new filter/hoses etc.
3- Cleaned preheating lines with wire/drill method
4- Kept aftermarket exhaust.
5- Replaced intake gaskets.
6- Reconnected all heating hoses to fan and filter assembly (that I took off for the aftermarket setup)
OK...Car still ices for a 2-3 minutes upon start up and then seems to idle and warm up just fine. I've had icing so bad in the past that it would cause my VW to stall and not restart. Now it seems OK, but should I worry about this EARLY icing or just motor on!
Car hasn't run this well in a while, so I am feelin' OK, but need some reassurance... |
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| glutamodo |
Sat Mar 31, 2007 7:09 pm |
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Sounds to me like you got it as good as it will get. The only thing that would make any improvement is a stock muffler for the proper preheat flow. But if what you have on there now is going nice, I'd call it good and drive it!
-Andy |
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| ottobahn |
Sun Apr 01, 2007 8:10 am |
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| Do you have a thermostat on the cooling flaps? That would help on the engine warm up. |
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| mhop2 |
Sun Apr 01, 2007 9:14 am |
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| I am not sure? Could you elaborate or post a pick of the thermostat? |
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| nc68bugman |
Sun Apr 01, 2007 1:13 pm |
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| Go here! Scott http://www.geocities.com/janbugger/flaps.html |
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| Fibersport |
Sun Apr 01, 2007 2:51 pm |
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| I second the stock muffler. I had an aftermarket 4 tip one and the manifold would frost up, the heat risers never got very hot. After putting the stock muffler on, not only did the frost go away but I got better heat in the car as well and the last bit of stumble went away. I have a 34-3 with a SVDA. |
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| dan macmillan |
Sun Apr 01, 2007 4:46 pm |
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ottobahn wrote: Do you have a thermostat on the cooling flaps? That would help on the engine warm up.
Engine temp wont help. You need exhaust flow through the heat riser tubes. Aftermarket exhaust depending on style does not flow through heat riser. In a stock muffler the hot exh enters the heat riser at the relatively high pressure head to manifold connection on the right side and exits into the relatively low pressure area of inside the muffler on the left side through the small tube.
In most aftermarket setups the exhaust just pulsates back and forth inside the tubes with no flow as there is no high to low pressure area.
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| mhop2 |
Sun Apr 01, 2007 6:02 pm |
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My exhaust is like the bottom pick. I drove the car quite a bit today and it ran OK, but hated starting up again once stopped (needed to turn over a long time, almost til battery died).
I'll look for a stock exhaust at the local VW show in a couple of weeks (Raceway Park NJ). I threw out my rotted stock exhaust with those "high" and "low" pressure setups long ago. I didn't know all of this was so important. :shock:
Just a note, when I started working on this car a year and a half ago, it would have been driving long ago if I would have just used tried and true VW German parts...Keep that in mind all who have a project!
I went for COOL looking parts and mean sounding exhaust and it has been a pain in the As$! |
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