recently brought a 20pp https://www.nopistons.com/forums/pub...IR#>/boink.gif wondering if any one could help me out as i have searched forums for a hrs now with no luck



wondering if any one has done the center iron mod as done on the 20b FC on 3rotor.com as i can make out from his pictures he has run 4 lines from the remote oil filter housing and run a line to the front, center and two to the rear iron rear iron from what i can make out extra line is for the oil pressure gauge ? ?



now i assuming that the hole to tap out is the one with the plug of some sort with the 4 punch marks holding it in, if so how do i remove this plug use a small tap and make a puller to pull it out or do i need to drill it out and tap it ??? is this all i have to do or is there something i have missed



is this mod worth doing or am i pissing in the wind



any help would be greatly appreciated

mod is worth doing, the oil galley is small to the center bearing.



not sure exactly how the plug will come out, you'll prolly have to drill it all out.



good idea to do the same to the front bearing too.

On that 3 rotor you are referring to . The set up is ran like this. 3 lines feeds the main bearings the second line on the rear iron is for oil pressure regulator.



The dowel pins on that engine are solid. You will be waisting your money if you ream out the main oil feed galley to the center iron, stock size is god for 8k rpm no problem with good oil pressure.





Hope that helps.

cheers i will just feed the front and rear irons what size an fittings do you recommend i was thinking -8an to each iron

That sounds like a plan. -8 is good...