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Post by insanetexan on Apr 26, 2012 13:18:49 GMT -6
I am wondering if anybody has gone to an electric fuel pump on their 54B scooter [257CC]. If so what would the recommended pressure rating be? I have seen some universal pumps that can go from 2.5 psi to 4 psi and some from 4 psi to 10 psi. which would be the best for the scoots?
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Post by damin69 on Apr 26, 2012 13:25:23 GMT -6
you do not need hi pressure as you are really only using it to keep the bowl full on the carb. so 2 to 4 psi should be fine.
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Post by insanetexan on Apr 26, 2012 13:31:47 GMT -6
I wasn't quite sure but I kinda figured it wouldn't be the high rated one. Just so many out there to choose from. lol
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Post by alleyoop on Apr 26, 2012 14:22:25 GMT -6
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Post by insanetexan on Apr 26, 2012 14:52:52 GMT -6
I kinda think my fuel pump may not be working properly, considering that with a full tank of gas there isn't a problem with starts and running. After it gets down to around a half a tank or lower it becomes harder to start and maintain a good running engine. Had that problem before on a car I had and replaced the mechanical pump with an electric and eliminated the problem all together. That's why I am thinking about going to an electric and no I do not have any hills or mountains where I am. It is all flat land unless you wanna count overpasses as possible hills. LOL
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Post by alleyoop on Apr 26, 2012 15:00:50 GMT -6
Is your Gas Tank Above the Carb or Below the Carb.
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Post by insanetexan on Apr 26, 2012 15:10:09 GMT -6
It's the MC54B-250 so it is below the carb just behind the radiator in the front. and the pump is even lower than that.
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Post by cruiser on Apr 26, 2012 19:16:02 GMT -6
I have the YY250T (Honda clone engine) and the original equipment fuel pump is the same as the 257cc scoot. I replaced my vacuum pump with a 42S electric fuel pump which has the lower fuel pressure. You won't need a pressure regulator with this and it delivers more than enough fuel under all conditions. Very useful when the scoot has not been running for a long period of time and the carb may be a little low on fuel. I have had no problems with my install. Here's one on Ebay which has less then 2 days before the auction ends: compare.ebay.com/like/320893762880 |
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Post by insanetexan on Apr 26, 2012 19:41:33 GMT -6
Thanks Cruiser, that is what I was kinda looking for but wasn't sure about the pressure values for the scoot. I am fixing to do a lot to my scoot as far as taking it down and replacing and repairing lots of the plastic. I would like to get all the under plastic stuff done at that time instead of having to take it all down again.
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Post by cruiser on Apr 26, 2012 19:56:20 GMT -6
Thanks Cruiser, that is what I was kinda looking for but wasn't sure about the pressure values for the scoot. I am fixing to do a lot to my scoot as far as taking it down and replacing and repairing lots of the plastic. I would like to get all the under plastic stuff done at that time instead of having to take it all down again. You're welcome. Here's what the pump install looks like on the YY250T:  |
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Post by nicpaige on Jul 24, 2012 19:46:58 GMT -6
I just finished putting a electric fuel pump on mine, the micro s series 1-5rating. I was adjusting idle and then decided to check the oil. Opened the oil reservoir cap and oil and fuel came gushing out. SO I figured a regulator would be nice to have inline. Got it set down to 2 psi and so far all problems with cutting out at high loads have been fixed. Scooter feels allot more responsive as well.
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Post by jct842 on Jul 25, 2012 2:51:16 GMT -6
One thing some do not take into account is vacuum. At wide open throttle there is little vacuum. The tiniest leak may go un noticed at other than wot but open that baby up for a min and the pump quits filling the carb float bowl. I prefer a vacuum pump.
A lot less chance of a fire or other accident happening as fuel only flows with the engine running. Get talking with some one after turning on the key....forget and get off and go inside. I have done it with a motorcycle several times and come out with a almost dead battery from the headlamp. Had there been a electric fuel pump and a stuck float.....ooops
then again all efi has electric so there are pros and cons.
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..BAD TO THE BONE..
