Discussion
Regarding Racing Green's FFF2 head as fitted to the 3.6 S6 engine.
Would appreciate comments as to the differences between standard S6 and FFF2 in terms of performance, smoothness, warm-up precautions, reliability, servicing, etc....
Many thanks.
Would appreciate comments as to the differences between standard S6 and FFF2 in terms of performance, smoothness, warm-up precautions, reliability, servicing, etc....
Many thanks.
Edited by JimTC on Saturday 21st February 17:15
I have one. my personal view is that it is phenominal. It's not a necessary upgrade but if I was replacing the head it is what I would choose.
It's also my personal view that the 3.6 is the best S6 engine. What the FFF set up on my car has given me is a 4L engine with the character of the 3.6 which is partly why I like it so much. But I have a bugbear that walls of low rpm torque are for V8s and it misses the pointing a straight six completely to give it those characteristics.
Spitfire48 has built a phenominal 3.6 and he investigated the FFF route so it's well worth digging out his comments on the FFF thread.
Biggest problem RG have had with the FFF is production. First manufacturer wasn't good enough in terms of meeting tolerances. The chap they then found was perfect but his business burnt down so supply was delayed. They also oversold a VCT solution which they kind of have but haven't delivered because they haven't allocated the man hour resources to just getting it done.
With my engine I also fitted the lighter timing chain and Syvecs ECU. The end result is that the engine is smoother than the six pot in my BMW and it is a real hoot to drive.
I've got some videos of it somewhere so will try and find the links.
It's also my personal view that the 3.6 is the best S6 engine. What the FFF set up on my car has given me is a 4L engine with the character of the 3.6 which is partly why I like it so much. But I have a bugbear that walls of low rpm torque are for V8s and it misses the pointing a straight six completely to give it those characteristics.
Spitfire48 has built a phenominal 3.6 and he investigated the FFF route so it's well worth digging out his comments on the FFF thread.
Biggest problem RG have had with the FFF is production. First manufacturer wasn't good enough in terms of meeting tolerances. The chap they then found was perfect but his business burnt down so supply was delayed. They also oversold a VCT solution which they kind of have but haven't delivered because they haven't allocated the man hour resources to just getting it done.
With my engine I also fitted the lighter timing chain and Syvecs ECU. The end result is that the engine is smoother than the six pot in my BMW and it is a real hoot to drive.
I've got some videos of it somewhere so will try and find the links.
http://youtu.be/dTQ5aRM0zfo
You can hear that the engine now whines instead of rattles.
And this was it at the end of its running in period:
http://youtu.be/JmD4S9n2Na4
Sound quality is terrible but the thing has so much more oomph and feels so much more spritely.
You can hear that the engine now whines instead of rattles.
And this was it at the end of its running in period:
http://youtu.be/JmD4S9n2Na4
Sound quality is terrible but the thing has so much more oomph and feels so much more spritely.
I have one. Have a look at my build thread linked to in my profile. It has all the reasons why I went for a FFF instead of a simple refurb.
Also has some reasonably detailed shots of the head itself if your interested.
As for warming up, the car now has a cold start up oil pressure in the 90's and a hot idle in the 30's..... Just like a normal production engine
Also has some reasonably detailed shots of the head itself if your interested.
As for warming up, the car now has a cold start up oil pressure in the 90's and a hot idle in the 30's..... Just like a normal production engine
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