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Hello, I have recently started working on the engine of my cb750 and I want to order some new parts. I have a similar situation where I want to make sure I order the correct parts and need some help identifying the correct model from the vin number. The vin number is CB750E-1020639. I was told...

Update: I've been riding the bike a little bit here and there just to try and get an idea of what else it needs. So far I am thinking I either need to bleed the front brakes or replace the pads; it is making a squeaking noise and slows the bike down when not accelerating almost like there is...

I ordered D8es and they sent me B8es. I did not even realize it until now. Sorry for the misunderstanding and thanks for the replies

I pulled the plugs out of the engine and they are marked as NGK Iridiums DR8EIX. Here is a pic of the one from the engine (top) and the new B8es (bottom).

Thanks Dirtdigger for all of the help! Here is an update on my 750: I replaced the main jets with #135 jets and i also replaced the points and condensors as well as changed the gap. The bike is now running like it is brand new! It is responsive and pulling like crazy! Unbelievable the difference...

Ok so I am confused as to what these random ports are (2 on carbs/ 1 on cylinder head cover). I have been looking in the maintenance manual and cannot seem to find what they are for. The didn't have any hoses attached when I purchased the bike so I am not sure if they are vacuum hoses or what. I...

I need help identifying these three ports (2 on carbs/ 1 on cylinder head cover). Any help would be appreciated

Thanks for all of the help so far! So here is an update: I checked compression and plug gaps which are both fine. I pulled the cover off today and checked the points. the 2&3 point looks a little burned up so I just purchased a points and condensor kit. I am going to install that as soon as it...

Thanks, Dan. I am going to purchase a few different sizes and try them out. Did you change the pilot/slow jets as well when you moved up sizes in the main jets? My bike is firing right up and idling just fine but I don't know if changing the main jets will effect the outcome of the pilot/slow...

Bobbernick, Sorry about your loss, I have been in a similar situation and I know how hard it can be. I would be interested in the carb sync if it is still available. Just let me know. Thanks, Matt

Ok so I am new to this forum and I have been searching around to see if I can find some help with my bike. I recently purchased a 1972 Honda Cb750 SOHC for $600. Lots of customs and mods. Here are the details that I am aware of: -Accel Super Coil 140403 coil kit (NGK D8es plugs) -Four straight...