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Trumpets Or Pancakes?


Welsh_S7
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My S7 has been off the road for a few weeks now while I have been sorting a few jobs that needed doing. She's running quite nicely at the moment but want to make sure I'm getting the full potential out of her.

 

She's running on a 2ltr Pinto (205 block) on twin 40 dellartos. The carbs are breathing through a pair of K&N pancake filters. I've read the previous threads regarding carbs and nobody seems to be a fan of the pancake filters - are tumpets the way forward? And if so, what filter should I use? Some offer a gauze tip, a foam cover while some offer no protection over the top of the tumpet at all!! So confusing!!

 

Any ideas?!!

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pancakes should have lemon and sugar on them and have no place on a carb.

 

 

trumpets takes away the sharp edges reduce stand off - smooths out the air flow and with the extra inlet track length help with torque. all round good egg is a trumpet. and every cylinder should have one.

 

:D

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Something like these maybe

 

registry_mod-136-1218912599_thumb.jpg

 

Mike

 

I notice you don't have any sort of filter or cover over the trumpets in your photo mike - is this the typical way to do it or should the trumpets be covered by something to prevent stuff being sucked in to the jets?

 

Cheers

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registry_mod-142-1184771003_thumb.jpg

 

I did have a pair of Piper Cross foam filters fitted but i found that they where far too restrictive and getting sucked in after i had tuned and balanced the carbs, plus screwing the mixture up, so now i am looking into something better. Something with a larger surface area, may even try a stainless mesh fitted to the trumpets to prevent the foam getting sucked in , but its still work in progress as i am waiting for the various types/sizes of mesh to arrive and to see if i can dome the mesh satisfactory enough to do as i intend.

 

There is a pic of the Piper Cross foam filter fitted in one of my garage pics.

 

Mike

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