Our Project Fiesta ST gets MORE Goodies! *Cobb content inside*

[M-Sport fan]

^^^I forgot (must have read it somewhere), but what actually "broke" in the engine, necessitating a full replacement, and did you ever find the root cause of the problem (too much tune/timing, too much heat soak combined with the previous, or what)??

 

[BlueBomber]

^^^I forgot (must have read it somewhere), but what actually "broke" in the engine, necessitating a full replacement, and did you ever find the root cause of the problem (too much tune/timing, too much heat soak combined with the previous, or what)??

I had an auxiliary oil cooler, and the RMM failed. the RMM failing means the engine suddenly had a lot more movement. The sudden movement and relative lack of slack in the stainless lines of the aux oil cooler yanked the cooler lines hard enough to loosen them, resulting in the engine running itself out of oil, which will kill literally every engine I have ever heard of


When the RMM failed I was driving at speed in traffic w/o a place to readily stop, so in the time it took me to pull over in a safe spot the damage was done.

no boost issues, no timing issues, nothing like that, just the fact it ran itself out of oil from a pressurized source and bled itself dry; this basically killed it but limping it to the dealer finished it off, the exploding rod out of #2 windowed the block in at least four places, and on both sides, too.


I reused as much off the motor as possible but the entire bottom end and block were unsalvageable, and the head was questionable.

Really, just a nightmare chain of events and really bad luck.

 

[M-Sport fan]

WOW, that DOES make a great case for the aftermarket RMMs, or at the very least, longer than even necessary oil cooler lines.

 

[BlueBomber]

WOW, that DOES make a great case for the aftermarket RMMs, or at the very least, longer than even necessary oil cooler lines.

I should have never removed the cobb one and swapped it out for that other brand. noone's broken the Cobb one yet. But it is what it is and this is the game we play modding, there's always a remote possibility shit could go down

 

[SoyFiesta]

Was the other brand RMM from a big company as well?

I should have never removed the cobb one and swapped it out for that other brand. noone's broken the Cobb one yet. But it is what it is and this is the game we play modding, there's always a remote possibility shit could go down

 

[BlueBomber]

Was the other brand RMM from a big company as well?

yeah, but I also know the manufacturer of the bushings used in the part and am kinda not surprised.

I had an early version of their part and they've since updated the design, I think. It's not really their fault, and nothing catastrophic would've resulted from the RMM failure had I not been equipped with an aux oil cooler.

 

[M-Sport fan]

Did the actual, internal part of the bushing rip, or tear?

Are we allowed to know the name of the company, or is that verboten for whatever reason?

 

[Waterfan]

Nobody?

No offense, but dozens, if not hundreds, of members have already done these exact mods and many have reported their findings. COBB Stage 3 has been out since 2014 and discussed to everyone's satisfaction.

If there is something new and exciting about your particular FiST Stage 3 + Coilovers I am missing, please feel free to correct my perceptions.

Excitement today comes from Big/Hybrid Turbos w/ or w/o twin-scroll manifolds and alternate fueling or stuffing 9" wide wheels in the tubs to run 225+ rubber, not years-old-Off-The-Shelf Stage 3 parts and tuning.

EDIT: basically what [MENTION=4740]jeffreylyon[/MENTION] wrote.

 

[ModBargains]

No offense, but dozens, if not hundreds, of members have already done these exact mods and many have reported their findings. COBB Stage 3 has been out since 2014 and discussed to everyone's satisfaction.

If there is something new and exciting about your particular FiST Stage 3 + Coilovers I am missing, please feel free to correct my perceptions.

Excitement today comes from Big/Hybrid Turbos w/ or w/o twin-scroll manifolds and alternate fueling or stuffing 9" wide wheels in the tubs to run 225+ rubber, not years-old-Off-The-Shelf Stage 3 parts and tuning.

EDIT: basically what [MENTION=4740]jeffreylyon[/MENTION] wrote.

No offense taken, we are also regular car guys doing mods to our cars and simple write ups. At no point did we say anything was ground breaking or life changing or insanely exciting. Just some normal car guys that are having fun modding our own cars. That's the whole idea behind forums, right?

 

[Waterfan]

No offense taken, we are also regular car guys doing mods to our cars and simple write ups. At no point did we say anything was ground breaking or life changing or insanely exciting. Just some normal car guys that are having fun modding our own cars. That's the whole idea behind forums, right?

thumbs up!