Working on a 50mm PP port project, N/A.

Anyone have good intake length numbers? We will try a few, but don’t want to start blindly

 

have you seen Mazda's SAE paper there is 900032 and then one for the R26B.
on the fixed length engines they ended up around 370mm from the intake flange to the tip of the trumpet, but it makes such a big difference you will want to try shorter and longer lengths

 

Actually yes I did find it! Looks like ~350mm is what I should be targeting. We will see what the owner would like to do, but I'd really like to try 3 different lengths in that ballpark. This car will see mostly street time, so might have to make some concessions on overall power... but it's also running a sequential so..