Ok...despite the BMW (or bike) experts here (do I make friends or what..?), the fuel/timing tuneup in these bikes ECM's is terrible.
Otherwise...MOST of you whould'nt have Bazzaz, Dynojet boxes attacted...right...?
Anyway, to try to keep the engine temp somewhat stable and below 215 degrees F. till timing adjustment is made available, here's what I did.
1. I used the DEI exh. wrap (#010127) to wrap the headers to the cat. box (two layers).
This not only helps keep the water coolant cooler, it keeps some of the heat out of the radiator, the oil pan and cooler (oil/water) lines..!
2. I wrapped the coolant hoses with the same. (Notice how close the HOT header tube is to the coolant hose!).
3. I wrapped the oil cooler hoses...same reason as above.
4. I wrapped the coolant and oil lines with adhesive backed, Thermo-Tec heat barrier to further "reflect" header heat.
5. I disconnected the fan power lines from the computer and installed a direct from the battery, on-off switch and to the fan.
Thanks to one of the guys on this board for the idea.
Now...as an expert noted above...if this isn't worth a 15+ degree reduction (as I saw yesterday at a coupla stop lights)...rod bolt problems are the least of your concerns..!
Yesterday, normally, the coolant temperature would have been in the 215/218 degr. F range at the stop lights.
197 degr. F was as high as it got (85 degr. day)...
Note that neither the fan nore the wrap alone will do the trick, both must be used.
I normally turn the fan on between 180/185 degr. F.
Take it or leave it, I don't care. To me...it was well worth the time effort and the few bucks it took to buy the parts.
Engines (the gaskets and materials the engine is made of) do not like the temp. spikes that these things go thru between moving and sitting still at signals.
P.s. - and...rather than "spend money" (as cried about above !) and add weight (sheet metal cover)....to clean up and sorta hide the giant cat. converter, while the system was off the bike, I just used car header paint to paint the cat. box and heat shield flat black.
The whole 8 dollar can of paint went a long way toward cleaning up the look of my bike (black version).
And yea...removing the cat. is a good consideration...BUT...the excessive heat is NOT the cat's. fault by itself.
The lack of ignition timing is 95% of the reason for the hot coolant temps. and the sluggish low speed power.
I'm more interested in somehow getting proper timing maps installed, then the fuel.
THEN...I can free up some power and remove some weight.
Last edited by Triple Threat; 05-09-2012 at 11:13 PM.