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Old 11-03-2012, 07:55 PM   #41 (permalink)
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Originally Posted by bsinclair View Post
they have ported heads,larger cams,valvesprings,retainers,rods, over 14:1 compression pistons and a unobtainable ecu...nothing stock in those motors...

as far as brock having a happy dyno i guess the other dynojet 250's ive been on in different states is happy also as they read within a few hp of each other.
Brock's dyno has been historically 2-3 HP higher than mine on a 200 HP bike, Bob's has been double that. That's why it's always important to do a baseline.
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Old 11-04-2012, 10:04 AM   #42 (permalink)
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OK, I see the flow numbers…. thanks.
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Old 11-07-2012, 02:13 PM   #43 (permalink)
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i already know for a fact by decking the head and adjusting cam timing these bike pick up 10hp.

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How will you adjust the cam timing. Does this model have oem adjustable sprockets?
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Old 11-07-2012, 02:14 PM   #44 (permalink)
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Originally Posted by Rush66crp View Post
Stupid question to follow...

What exactly would have to be sent? The entire motor? I'm not familiar with this process. Thanks.
Just the cylinder head needs shipped.
Here's an 09R1 I did for the owner of Costa Rica Yamaha a few months back.

09R1porting how to - YouTube
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Old 11-07-2012, 02:21 PM   #45 (permalink)
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How will you adjust the cam timing. Does this model have oem adjustable sprockets?
The s1000 has factory adjustable cam sprockets.
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Old 11-07-2012, 02:56 PM   #46 (permalink)
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Just the cylinder head needs shipped.
Here's an 09R1 I did for the owner of Costa Rica Yamaha a few months back.

09R1porting how to - YouTube
FYI this isn't the same guy who started this thread !!


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Old 11-07-2012, 04:27 PM   #47 (permalink)
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FYI this isn't the same guy who started this thread !!


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Correct.
I was just answering the question by showing the piece involved and a little bit of how it's done.
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Old 11-07-2012, 11:06 PM   #48 (permalink)
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The s1000 has factory adjustable cam sprockets.
I figured there had to be a reason we had not made those.
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Old 11-08-2012, 08:54 PM   #49 (permalink)
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thought i would give a update with pictures...





this is a quote from my freind that did a little write up for his business website...

Ive been working on this one for awhile now trying to improve on an out of the box impressive design . BMW did thier homework ! Without damaging the velocity Ive managed to increase airflow in this head by as much as 19% near max lift (the smallest gain being 7% at .1-.15 lift . The BMW cam profile and rocker design is simply genious enabling them to hold the valve open at max lift far longer than any of the japanese profiles .
After much time and thought (you cant imagine what goes into a port development for those that actually develop thier own and dont just steal others) I am excited to unviel this one . We should have dyno results within the next couple of weeks .
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Old 11-08-2012, 09:02 PM   #50 (permalink)
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Really long forward to dyno results on this. I hope you're not doing any other mods at the same time so we can have a good comparison.
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