2015 Engine differences

[Element Tuning]

Originally Posted by celek

Have you been kind enough to notify Ferrera and any other valve manufacture of the changes in the valves? I would assume you were building a customer head and discovered the differences ordering valves that no longer fit.

I mentioned the tip length to Ferrari eons ago. They acted like I didn't know what I was talking about and told me to press in new valve seats. LOL! They want too much money for custom valves so I've started working with someone else.

We can make the current Ferrea fit however.

[nikitopo]

Some more information here:


http://www.ft86club.com/forums/showp...&postcount=642

[Lonewolf]

All the dips who kept saying the 2013 motors were the same as the 2014/15/16 have sure become quiet the last few months...lol

[Wayno]

Originally Posted by sw20kosh

Advice for 2015 owners: don't dyno your car at 2000 miles...

155 whp 128 wtq on a dynojet where 2013 and 2014's dyno at 165-172 whp

Most of the power loss on later cars isn't due to different parts, it's because they change parts without updated calibration. Most later cars I've seen lose power because they run super rich on the stock tune compared to the original cars and/or they have more variance than the early cars that had more consistency.

Here's a stock MY15 AT hitting 10.0 AFR at 6500rpm. It doesn't stand a chance compared to a stock car that runs at 12 and hits 11.0-11.5 up top.

It will make exactly the same power as an early car when the MAF scale has been corrected to be in the same ballpark as an early MY car though.

[Hector]

That's exactly what i mentioned. A quite severe powerloss throughout the powerband.
Misfires and rough running when cold and hard to go over 133mph.
When i realized that i have to tune the new car again loosing my guarantee i was quite disappointed, because my old 2012 was buggy as hell but running fine on stock tune.
What hardware modifications can be done to correct that unpleasent state without touching software? MAF spacer? By the way some RPM fluctuation occured too but that was only some sort of "calibration" after resetting the ecu and gone after a thousand miles or so. A MY2015 is a much better car in terms in safety and quality but that thing is again a severe fail by Subaru not matching the calibration. What about emissions? Is that fat running engine better or worse? The new ones should be better on the emissions side, but hopefully not by cutting power.

[Hawk77FT]

Originally Posted by Hector

A MY2015 is a much better car in terms in safety and quality .

How would it be better in terms in safety and quality than the MY2012 for instance?

[Hector]

Much less oversteering for safety and simply no rattles outside and inside the car.
What the fuck am i talking about? Very many issues based on build quality and i felt that i had them all. You're a 2012 member so you should know.

[Hawk77FT]

Originally Posted by Hector

Much less oversteering for safety and simply no rattles outside and inside the car.
What the fuck am i talking about? Very many issues based on build quality and i felt that i had them all. You're a 2012 member so you should know.

I have a 2012 and very little issues really. No rattles though...I must've been lucky enough to get a good one.

[nikitopo]

A few respectable aftermarket companies consider already the 2015-16 engines as a different kid in the town. Some examples below:

• HKS: They have not provided yet firmware updates for the 2015-16 models. Details here: http://www.ft86club.com/forums/showp...&postcount=101

• OKADA projects: They provide a different plasma product for models A-B, and a different one for models C- (2015- .. ). Details here: https://www.japanparts.com/parts/detail/15215

Too bad we don't have yet a definite answer from the factory about the actual changes. Only some sporadic information here and there.

[FRS Justin]

Originally Posted by nikitopo

I did the check for Subaru. However, the part numbers also changed for Toyota. Following are some examples:

Valve, Intake
old SU003-00196
new SU003-04745

Valve, Exhaust
old SU003-00197
new SU003-04746

Camshaft, Intake, RH
old SU003-00180
new SU003-04741

Camshaft, Exhaust, RH
old SU003-00181
new SU003-04742

Head & Valve Set, Cylinder, RH
old SU003-00103
new SU003-04958

Since the car is a Subaru I will use Subaru part #'s



No valve changes since 2014
2013 thru 2015 short block is the same 10103AC260
As you can see no real changes in 2015. Probably Toyota needs a new part number for filing system who knows
My 2012-13 motor ran 13.47 N/A no problems 35K on it. My 2014 motor made 640hp so in my opinion the year doesn't really effect anything, it's just a FA20

[nikitopo]

What is your reference? Some website? By the way, good luck with your 640hp engine ...

Only safe reference is the Subaru EPC application which comes from the factory. This is what dealers use. In fact there were some more engine changes in the 2016 models. What we know about the changes is that they were made for safety. These engines are supposed to withstand (in stock form) for many years and factory doesn't want to have a bad reputation with many broken ones.

[kch]

Originally Posted by nikitopo

What is your reference? Some website? By the way, good luck with your 640hp engine ...

His motor is fully built & sleeved, so it's legit.

[nikitopo]

It's not only about legal requirements, but I don't want to start here a meaningless discussion.

[FRS Justin]

Originally Posted by nikitopo

What is your reference? Some website? By the way, good luck with your 640hp engine ...

Only safe reference is the Subaru EPC application which comes from the factory. This is what dealers use. In fact there were some more engine changes in the 2016 models. What we know about the changes is that they were made for safety. These engines are supposed to withstand (in stock form) for many years and factory doesn't want to have a bad reputation with many broken ones.

You won't be the first I have to educate.....The pictures posted were the electronic parts catalog. I didn't see the need to post 6 more pages to prove the short block is the same number, or to prove anything else I posted. Do you think I make this stuff up? No I research, and I develop, and I help anyone who asks. It's quite obvious you don't know me or what I've done and that is ok, but before you start questioning what I have done bring something to the table besides you wishful thinking and wrong information. 2016 made safety changes??? What the hell is that???? Why don't you sit down and bring up 3 windows of the EPC and start finding the differences like I did?
So in closing I will leave you with these thoughts,
1: Why 4 years later did these Safety changes happen instead of sooner this engine is still a boxer nothing new.
2 Wouldn't you think they would have worried about their reputation long before now on this new platform?
3: If 2015 is so special why are they exploding too?


EDIT:
Looks like their are no "safety changes" in the short block since 2012