Mechanical vacuum gages were never my favorite, reading the 4 pointers spread out across a 2 foot wide panel seemed tedious. However, TwinMax has a good reputation in some circles. The TwinMax will only handle the twins, and I never really warmed up to the small dial or having to fiddle with the sensitivity knob. Lets focus on eliminating the least desirable types of synchronizers first. Additionally, I have used a 4 gang mechanical vacuum gage. I have owned a TwinMax, a MotionPro mercury filled 4 column manometer, and recently bought a 4 column Morgan Carbtune Pro. Since you have mentioned both a twin and 4 cylinder motorcycles, a TwinMax electronic synchronizer will not suffice. Synchronizing carburetors is not particularly difficult, but you need special tooling and a good understanding of the process. RX Hello Carlos: You have one of my favorite bikes. Do I really need something like a TwinMax? What do you recommend for gage to help take the difficulty out of the job? Help me Doctor. OK, the first time might take you a bit longer, but once you get the procedure down, it's easy as pie.Dear Doctor, What is the best way to synchronize multi cylinder bikes with two (or more) carburetors? I have always struggled with trying to get my CB 77 running properly and am about to finish restoration of a tasty 75 Honda CB550. The sync procedure is easy as pie and takes no more than a half hour where most of that time involves getting the engine temp above 60℃.
Motionpro manometer pro#
Or you could also just buy a Motion Pro manometer at Cyclegear or probably any auto parts store for $80-$110, but don't break the tubes. bikes as well)Īnother option is the CarbMate which has gotten good reviews from other Guzzi sites, but I have neither seen nor tried one. ~$112 for 4-column Carbtune w/tool pouch shipped to USA (get this if you have 4 cyl. ~$90 for 2-column Carbtune w/tool pouch shipped to USA (this is what I have - great if all your bikes are twins) You can buy it directly from Morgan Carbtune in the UK Rather than a mercury manometer (or whatever the EPA allows) the Carbtune uses stainless steel rods. Like Beetle, I also have the Morgan Carbtune which is a very nice piece of kit. Much, much easier than most carburettors! It really is a delightfully simple procedure. Whichever side has the highest manifold depression use the air bleed on that side to lower it until both sides are running identically.ĭisconnect everything and re-install the manifold plugs or reconnect the charcoal canister suck tubes. Re-start your engine and look at the manometer. If you have had to use the bell crank screw to balance at high speed the chances are the TPS will be out.Ĭhoose 'Actors', follow the prompts and do a TPS re-set, then go back to 'Measurements' and the TPS reading should flick to 4.6 for an 1100/1200 2VPC bike and 4.8 for a 4VPC machine. Go to the 'Measurements' page and check the TPS setting.
Once it is balanced at 3.5-4.0K let it off the throttle and kill the engine.įire up Guzzidiag and connect. If the depression is unequal on both sides use the screw on the bell-crank adjuster on the LH TB, NOT the linkage rod to adjust the balance at that engine speed. Once its above 60*C you can hold the throttle open so that the engine is spinning about 3,500-4,000 RPM and check the balance with your manometer. You can connect your scan tool/Guzzidiag while its warming up. Once these are closed and you've removed the screws from the inlet manifolds or disconnected the suck hoses for the charcoal can on US bikes start the bike and warm it up. Its a bit of bugger to get to but its not really a big deal.
On the 1200's it is a 5mm Allen key 'Tube' right on the inside of the TB facing down as well. It needs a small, flat bladed screwdriver. These are, in the 1100's in the outside of the throttle body underneath in one of the 'Tubes' cast into the body itself, I think its the rearward one but I don't have a bike handy right now. You'll also need some form of diagnostic device, (ie Guzzidiag.) to recalibrate the TPS after doing it.Īpart from this the procedure for all the W5AM equipped CARC bikes is identical and incredibly simple.įirstly close both of the air bleeds on the throttle bodies. Short answer is yes, you need a manometer of some sort.
0 kommentar(er)
