eyeguy
Junior member
Chaps, I recently posted about my shaggerised old VHB's on the posh blue '72 SF. DEspite replacing everything that could be changed, it still ran terribly. So, after much discussion with Dellorto UK, I ordered a pair of new 30mm PHBH carbs. They were incredibly helpful and supplied spare jets to complement the ones I'd already bought.
The reasons I/we chose PHBH were 1) they are about ?60 per unit cheaper than PHF's and 2) they are are clamp fitting, so I was hoping they might bolt on with minimal issues. As they arrived ( I paid slightly more for metal float bowls, and Delly credited me for the resin jobs):
First fit:
They fitted straight on to the existing stubs- massive result!! Cable fitments were good, with minor trimming only. I used the original metal petrol pipe fittings, rather than the horrid plastic items in the first picture.
All done:
Final settings:
PHBH four stroke carbs
120 main jet
52 pilot jet
X8 Needle, second clip from top
268T Needle jet ( atomiser)
mixture screw 1.5 turns out
The bike now has a rock steady idle and instant pickup throughout the rev range. It's now almost as good as the unrestored black one, complete with points and skanky old VHB's- progress, eh? :
Very, very chuffed.
Hope it might prove useful to someone!
cheers
A tutto gas
Pauly two Lavs
The reasons I/we chose PHBH were 1) they are about ?60 per unit cheaper than PHF's and 2) they are are clamp fitting, so I was hoping they might bolt on with minimal issues. As they arrived ( I paid slightly more for metal float bowls, and Delly credited me for the resin jobs):
First fit:
They fitted straight on to the existing stubs- massive result!! Cable fitments were good, with minor trimming only. I used the original metal petrol pipe fittings, rather than the horrid plastic items in the first picture.
All done:
Final settings:
PHBH four stroke carbs
120 main jet
52 pilot jet
X8 Needle, second clip from top
268T Needle jet ( atomiser)
mixture screw 1.5 turns out
The bike now has a rock steady idle and instant pickup throughout the rev range. It's now almost as good as the unrestored black one, complete with points and skanky old VHB's- progress, eh? :
Very, very chuffed.
Hope it might prove useful to someone!
cheers
A tutto gas
Pauly two Lavs
