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Deans BMW 07-24-2010 08:38 AM

A little S1000RR tech
For those of you that might be interested in what Chris at San Jose might be doing.

Just finished downloading the last pics taken.

These are taken in Chris's skunk works at SJBMW. He is doing some very trick stuff to the S1000RR.

This is a S1000RR head mounted on his flow bench with some trick mounting hardware, Chris is a very good fabricator and welder of most any type of metal. His flow bench is completely computer controlled, it will incrementally open the valve an exact amount and record the flow rates and any other parameters that he is studying. His bench can adjust any potential throttle body opening so the computer will plot everything in a series of graphs. His philosophy is that you get HP one at a time.

The head of the SKRR engine is right out of their F1 effort, the combustion chambers are machined not cast. The cams are hollow, the cam sprockets are sloted so that the cam timing can be changed. All that is after market on Jap liter engines. The attention to detail and engineering is unbeliveable. As you might know, they are also racing the Aprilia V4 in AMA super bike. To Chris's suprise, there is no comparison in the two engines.

Deans BMW 07-24-2010 08:39 AM

Chris has made some ultra trick tools (not Shown) that allows him to change the cam timing 1 or 2 degrees at a time. He then does a dyno run then changes it again. He can change the cam timing in one hour and have it on the dyno. He only adjusts one cam at a time then the other one then various combinations of the two cams to get that additional one HP at a time.

Some of us belive that the only reason for San Jose BMW is to provide Chris with a very trick machine/race shop for his real passion---Racing.

Here is another picture of the set up for the computer to control the valve lift when running tests on his flow bench. Chris says that the S1000RR stock heads flow the best of any head that he has ever seen.

About a month ago, he recalibrated his dyno, his S1000RR is now running over 194 RWHP completely stock and running pump gas.

Getting ready for Bonneville....:)

Jonas The Swede 07-24-2010 08:36 PM

A little S1000RR tech
Great pic's and a great read, as always! Thanx! ;)

Deans BMW 07-28-2010 05:20 PM

According to someone from another forum that was there today at the dyno, Chris is now up to a repeatable 196 RWHP and that does not include anything learned and developed on his flowbench.

His goal is 200 RWHP started BTW from a baseline of 183 RWHP.

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