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Posted by: v82go Feb 4 2010, 03:19 PM

Hi
I have several sets of webers, one of the sets have manifolds that are aprox. 3/4"
taller than the other set. Would the tall ones work better for spirited street driving
than the shorter ones ? This is a 2.0 that was removed from a HSR car, so it has a non-stock cam, and a few other goodies. And whats up with the extended jets ? see
pic.
Thanks for your help

PS: I will be running closed head vents.



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Posted by: yeahmag Feb 4 2010, 04:21 PM

Those aren't extended. That's just the main jet stack...

Posted by: SirAndy Feb 4 2010, 04:29 PM

- The longer the more low end torque and less top end HP.
- The shorter the more top end HP and less low end torque.

Same goes for velocity stacks ...
Andy

Posted by: v82go Feb 4 2010, 04:34 PM

Thanks, I will go with the tall ones. These jets stick-up over an inch higher
than my other ones (see pic).


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Posted by: SirAndy Feb 4 2010, 04:35 PM

The taller ones are the later style (improved design) ...

Andy

Posted by: v82go Feb 4 2010, 04:42 PM

And thanks once more.

Bob

Posted by: Cevan Feb 4 2010, 07:06 PM

So is the difference between the early and later style just a longer jet stack holder?

Mine have the early style and I'm wondering if it's worth it to get the later style. How much of a difference does it make on low end torque on a 2056?

Posted by: SirAndy Feb 4 2010, 09:36 PM

Taller main jets and taller intake runners are two completely different things ...

I believe the taller main jets help the fuel atomization, but don't quote me on that.
Andy

Posted by: wertygrog Feb 4 2010, 10:10 PM

I think the only difference is the holder...it's taller so less dirt and crud gets sucked in through the A/C jets.

Posted by: Van Feb 5 2010, 07:27 AM

Right - the "jet" is actually at the bottom of that assembly, if you pull it out. The longer handle just makes it easier to work with - especially if you use a thicker air cleaner base plate.