FBM Stage 1 and Stage 2 Head packages - Page 4 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

BRZGM3 · 01-13-2015, 08:09 PM

So any base line dyno results where the only change was the head work ??

FullBlown · 02-02-2015, 11:58 AM

We just wrapped up another clients car and it was nice to get some comparison with an identical setup.

Both engines ran the same compression on our stage 1 block. Only difference was the blue line was using a complete stock head. You can see that we made more power on less boost and the increase in spool was very noticeable.

BRZGM3 · 02-02-2015, 12:01 PM

That's with the cams correct?

FullBlown · 02-02-2015, 01:08 PM

Yes complete stage 2 package with cams.

sato · 02-03-2015, 11:49 AM

Is the engine idle behaving on cams?

FullBlown · 02-03-2015, 12:21 PM

Stock Idle

Calum · 02-03-2015, 05:13 PM

Quote:

Originally Posted by sato

Is the engine idle behaving on cams?

The cams are pretty lumpy from the factory. I'd guess that FBM is removing some of the lift and/or duration from the exhaust cam to help spool the turbo. Add in the better head flow and the results is more power everywhere. If I'm right idle would actually be easier.

Just a guess though.

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01-13-2015, 08:09 PM	#43
BRZGM3 Senior Member Join Date: Nov 2013 Drives: CBS brz limited Location: Norfolk, VA Posts: 180 Thanks: 64 Thanked 30 Times in 24 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	So any base line dyno results where the only change was the head work ??

02-02-2015, 11:58 AM	#44
FullBlown Senior Member Join Date: Sep 2012 Drives: Scion FRS Location: MN Posts: 1,171 Thanks: 242 Thanked 2,026 Times in 548 Posts Mentioned: 298 Post(s) Tagged: 4 Thread(s)	We just wrapped up another clients car and it was nice to get some comparison with an identical setup. Both engines ran the same compression on our stage 1 block. Only difference was the blue line was using a complete stock head. You can see that we made more power on less boost and the increase in spool was very noticeable.

02-02-2015, 12:01 PM	#45
BRZGM3 Senior Member Join Date: Nov 2013 Drives: CBS brz limited Location: Norfolk, VA Posts: 180 Thanks: 64 Thanked 30 Times in 24 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	That's with the cams correct?

02-02-2015, 01:08 PM	#46
FullBlown Senior Member Join Date: Sep 2012 Drives: Scion FRS Location: MN Posts: 1,171 Thanks: 242 Thanked 2,026 Times in 548 Posts Mentioned: 298 Post(s) Tagged: 4 Thread(s)	Yes complete stage 2 package with cams.

02-03-2015, 12:21 PM	#48
FullBlown Senior Member Join Date: Sep 2012 Drives: Scion FRS Location: MN Posts: 1,171 Thanks: 242 Thanked 2,026 Times in 548 Posts Mentioned: 298 Post(s) Tagged: 4 Thread(s)	Stock Idle

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