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#1 HD8 Carb Body Guide Screws
Posted: Sat Dec 14, 2024 1:08 pm
by caveman
Hi everyone,
Just had carbs returned from Burlen and they have fitted x-head screws to the carburettor body, damper guide brackets
I'm struggling to locate an outlet for the original 3 slotted screws or the exact size. Any help greatly received.
After:

Before:
I have the brass guide brackets, thankfully.
#2 Re: HD8 Carb Body Guide Screws
Posted: Sat Dec 14, 2024 2:44 pm
by bitsobrits
Obviously they are of the opinion that there is no functional difference vs the original fitment.
But I too would want to use the original brass guides as they seem a better solution in terms of corrosion resistance and friction properties, so I would just use the original guides with the new screws.
#3 Re: HD8 Carb Body Guide Screws
Posted: Sat Dec 14, 2024 4:30 pm
by caveman
Thanks Steve,
Yes, this is what I have done temporarily but the x-head screws sit proud and look terrible tbh.
I’ve emailed Burlen but thought I’d try and purchase sooner as I’m refitting this weekend.
#4 Re: HD8 Carb Body Guide Screws
Posted: Sat Dec 14, 2024 6:37 pm
by 40GT
I have been here recently with some SU 175's, as far as I recall they are the same threads as the butterfly screws and these were also split ends.
They are possibly 1/8 BSW, but what I do remember is they were countersunk at 30 degrees not 45. Which might explain why they fit nicely home.
#5 Re: HD8 Carb Body Guide Screws
Posted: Mon Dec 16, 2024 11:47 am
by caveman
Burlen replied this morning and say they only manufacture X-head screws now.
They very kindly offered to send out some original used and slotted screws (split ends) that no doubt are slotted butterfly screws. Change in countersunk angles does explain why they sit proud, and out of place.
#6 Re: HD8 Carb Body Guide Screws
Posted: Mon Dec 16, 2024 12:11 pm
by mgcjag
I'm sure you should be able to hunt out suitable screws.. could this work...call them to check angle etc
https://www.bolts.co.uk/1-8-bsw-x-1-4-m ... CSC012025/
#7 Re: HD8 Carb Body Guide Screws
Posted: Mon Dec 16, 2024 5:06 pm
by caveman
Thanks Steve. I'll call them if Burlen doesn't work out.
#8 Re: HD8 Carb Body Guide Screws
Posted: Tue Dec 17, 2024 2:54 pm
by Mich7920
Hi Steve,
PM sent.
Mich
#9 Re: HD8 Carb Body Guide Screws
Posted: Thu Dec 19, 2024 6:03 pm
by caveman
Great Burlen after service.
