Difference between 2013 & 2014 FRS engines?
 

A friend wants to know - any difference between the 2013 & 2014 engines?

The rocker pivots had the oiling hole change diameter on the driver side head. 14' is also the first year of the longer valve stem and rocker arm with deeper pocket. This is to improve rocker arm retention.

Thanks - We are not very mechanical - do these changes causes issues when, say bolting in a 2014 engine into a 2013? Brz/ frs same exact engine too?

No, it won't make a difference in those two years.

was this a revision between MY13 and MY14 designated cars or did it change by build date?

The rocker pivot oiling hole change is a revision, old part numbers supersede to new. I believe the longer valve stem and corresponding rocker arm change are a build date and on change. I don't know for sure.

OK thanks for that. just curious as I have a November 2013 (MY14) build 86 GTS and was wondering if there was an easy way to tell if my engine has the revisions.

Probably easiest way to tell is to punch up the vin in a parts finder. I would say you probably have the longer stem valves.

yep - I think I have the longer ones as it seems this revision came in during May 2013. seems to have been many revisions to valves and vale train over the years. will run my VIN and see what comes up. thanks for your help!

help
 

We bought a stage one built 2012 Toyota 86 fa20 and swapped it into our 2014 Subaru brz. The stage 1 engine also came with a Revolutios rp600 kit and a Garrett gtx3076r turbo, turbosmart wastgate and BOV, EL turbo manifold,dw1100 injectors, Aem 340lph high flow fuel pump,delicious tuning flexfuel kit, Setrab thermostatic oil cooler, mishimoto intercooler,grimspeed EBCS. We got the engine in and all hooked up, did a oft tune for increased injectors, fuel pump, 1 o2 sensor. The car will run, but it fels like its not getting enough fuel. there is zero throttle response the engine will die if I touch the gas peddle. Help please if you have any ideas. p.s my son is a active duty soldier and is being deployed on Tuesday, we did this swap two weeks ago and engine still wont run. So this is now MY problem to deal with.

Go look at your other post.