Walbro WT 903 replacement
03-23-2024, 02:17 PM
#2
My Feedback: (19)
Does the original carb use internal pressure pulse or is there an external pressure line?
You should find a number of carb choices at Valley View RC, Mile High RC, etc. Any modern carb for that size engine should work as long as it has the proper pressure configuration.
You should find a number of carb choices at Valley View RC, Mile High RC, etc. Any modern carb for that size engine should work as long as it has the proper pressure configuration.
Last edited by Truckracer; 03-23-2024 at 02:20 PM.
03-23-2024, 04:29 PM
#3
Join Date: Jan 2004
Location: lake in the Hills,
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external pressure
34 / 64 ( 0.531 ) venturi
ball bearing detent choke
these are the same features as my DLE 55 and DA 50
Can't find my walbro list right now, I will look again
34 / 64 ( 0.531 ) venturi
ball bearing detent choke
these are the same features as my DLE 55 and DA 50
Can't find my walbro list right now, I will look again
03-24-2024, 06:05 AM
#4
Join Date: Jan 2004
Location: lake in the Hills,
IL
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extra info:
I have a ( at best ) 53cc CRRC twin, it is made using 2 of there 26cc pro jugs and pistons so how they got to 55 I would like to know
unless the carb has been damaged, clean and replace the regulator diaphragm will fix wt type carbs 98% of the time ( how to vibs ).
Walbro WT carbs have the venturi size cast in 64th on the venturi itself, in this case 34.
Still can't find my reference chart for walbro.
I have a ( at best ) 53cc CRRC twin, it is made using 2 of there 26cc pro jugs and pistons so how they got to 55 I would like to know
unless the carb has been damaged, clean and replace the regulator diaphragm will fix wt type carbs 98% of the time ( how to vibs ).
Walbro WT carbs have the venturi size cast in 64th on the venturi itself, in this case 34.
Still can't find my reference chart for walbro.
Last edited by kmeyers; 03-24-2024 at 06:24 AM.
