SOHC.co.uk Forums > CB750
F2 carb flooding
Read Replica:
New float needles seem to have cured overflow issues and bike now running fine.
Quick question though.
I am still not happy with the lack of brass overflow in carb #1 so am still loooking for a replacement bowl. Are the carbs on the CB550F the same (and subsequently, the bowls) as the 78 CB750F2 carbs?
Chow for now
Andy
K2-K6:
Hi
The brass tube will normally be above the fuel level with a correctly set float and valve and so have nil affect on any carburation.
BUT........... if the bowl continues to fill the fuel now has (outlet blocked) no route out other than through the carb and depending on arrangement, angle, etc could fill the cylinder!! IF this happens the cylinder will not pass compression when cranked over and will most likely bend the con-rod. I think the tube is important so would install replacement.
Even if it kept getting a small amount of fuel into the motor it is still ultimately drastic if left unchecked, bore wear, oil dilution, leading to bearing / cam failure.
Not trying to scare you, as if all is well then nothing, but it is an important contingency.
Hope this helps.
AshimotoK0:
Pretty sure I have a spare bowl from a K7 which I am fairly sure has the same bowl. Will check out the tube on it. If I do have one then you can have it for the cost of posting it.
Still looking for 2 off K0 brass floats if anyone has any to sell.
Cheers
Ash
Read Replica:
Thanks for the kind offer Ash. I will take you up on it if bowl is compatible.
Even though the bike is running fine at present I would feel easier if things were as they were designed to be.
Andy
Yoshi823:
The float bowls are compatible between the F2 & K7 carbs in all except jetting.
http://www.cmsnl.com/honda-cb750k7-four-england_model14390/partslist/E19-1.html
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version