Tapping 2nd / Dual Pulse for my new Lamey setup setup... Un-certainty.

[Roo]

The setup is as as follows (freestyle ONLY):

-Lamey Powervalve Cylinders, 62T Cases, 8MM Stroker, 81.5MM Flattops, ADA Head, ~800CC & 185 PSI Compression
-BlackJack 44MM Carbs
-Factory B-Pipe, Mod Chamber
-MSD Enhancer

I bought this motor as is from a fellow board member here. There is only the original stock pulse line fitting. I believe he was using dual carbs with an external fuel pump, hense the need for only one.

I do not have an external pump. I was debating just using the one fitting with a tee to both carbs, but given the amount of money I just dropped, I rather not starve the motor or some sort and not have adequete (sp?) flow through the line.

Picture two shows my idea for two possible locations. The yellow dot represents a mirror of the other (stock) side. This can only really be done properly if the cylinder is pulled which I really rather not do as the motor came running to me and do not want to crack it open if at all possible.

The second option represented by the red dot which seems like it would work and would take only moments to do. Basically just drill and tap the side. The blue represents the profile of the reed cages which does not look like it would block the hole.

Just wondering what everyones advice is on this. Picture three is for fun and a teaser :Banane09:

Thank you all,
Andrew

 

[750SX]

red dot is a good spot, but i would not drill in any spot with the motor together. Buy an external pump and be done.

 

[SUPERTUNE]

You must run 2 pulse lines when running dual SBN carbs with the stock fuel pumps! NEVER 'T' them!
Just stuff some paper towels and some tape to seal off the inlet and you'll be fine.
Either location will work fine, I prefer you go thru the top but is hard to do with the engine assembled, especially because it looks like that you have the early style cases without the pulse bosses like the newer versions have.