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Hi all,
Is there anyone making stack for the 36mm drla or do we just buy the 40mm version?
Should I get some made up?
What height and style has worked ok for you??
There was a rumour years ago anything taller than 3 inches was costing power on type 4 engines.
What gap overhead be optimal if that is correct?
The short alloy rolled edge stacks only seem to fit in those foam style filters I don't favor.

I’m making myself some 3D printed stacks specifically fitted for 36 DRLA’s.

Made them fit my air filter base etc. so there is a smooth transition.

Lower right on the picture. The ones on the carb are some I custom designed, to run with foam filters.

https://www.dropbox.com/scl/fi/2p0xogj5 ... 7qbqz&dl=0

They look super special.
I have yet to do my own measurements-busy building an exhaust.
Have you measurements for drla40 to compare with drla 36?
The only guess people say is 'about the same..."