So I finally got my S5 motor over here from Redmond. I had planned on a large streetport and rebuild then putting the shortblock in the GSL-SE, however upon closer inspection, the housings are S5 TURBO housings (4 port.) I am wondering if I can just swap over the end plates to 6PI, or is the whole motor different? I know the turbos have a lower compression, and the high compression NA is what I am after. What will this effect and how?
Thanks, Robert.

 

You will want to change the rotors, front cover, all Irons.

 

yeah basically it would be better for you to use everything from the GSL-SE motor or use the t2 and do an s5 t2 conversion

 

well if you need to get rid of that engine, please PM me. (or any of the housings/plates)

 

OK so I am now looking for an NA S5 shortblock within MAZDA spec, in trade for this S5 TURBO shortblock. I will post it up in the FS WTB section.
THANKS GUYS!