- Joined
- Apr 1, 2017
- Messages
- 361
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- 137
Just a little shared learning here although most may know this...…
It seems common sense but sometimes overlooked when buying new parts but since I rebuilt my 650 lump it never has run right and always had to have a little choke on. So this weekend I finally bit the bullet and stripped the carb off for examination. I had previously 'flatted' off the bottom of the carb but as the bakolight spacer was new I never gave it a second thought to check it, however after putting a steel rule across it I was stunned at how warped it actually was on both sides!!…….so after a little flatting off it's now nice and flat.....
I rebuilt the carb also but didn't check the main spindle as the kit I bought had the oversize shaft in it and at the time I didn't have enough time to ream out the carb body so I didn't even check it, big mistake!!!!…….the bushes are non existent and the shaft is heavily worn on the throttle lever side, luckily the carb body has virtually no wear on it (measures 6.05mm max) so I have purchased a new standard size spindle.
In my other world of VW's I know how detrimental this shaft being correct can be and I'm quite (extremely) peeved off with myself that I didn't sort all this out at day 1!!!!!!!!!!…….my fault for rushing I suppose...…
I'll drop a note back here on how the car reacts once it's been rebuilt.
On a side note the bushes for the main spindle are plastic, has anyone ever machined and fitted brass ones? I used to do them with the VW's ok (in fact I had all the lads asking me to machine them and made little tools for fitting them)……..I might do this on the Fiat carb?....
Cheers
Rob
It seems common sense but sometimes overlooked when buying new parts but since I rebuilt my 650 lump it never has run right and always had to have a little choke on. So this weekend I finally bit the bullet and stripped the carb off for examination. I had previously 'flatted' off the bottom of the carb but as the bakolight spacer was new I never gave it a second thought to check it, however after putting a steel rule across it I was stunned at how warped it actually was on both sides!!…….so after a little flatting off it's now nice and flat.....
I rebuilt the carb also but didn't check the main spindle as the kit I bought had the oversize shaft in it and at the time I didn't have enough time to ream out the carb body so I didn't even check it, big mistake!!!!…….the bushes are non existent and the shaft is heavily worn on the throttle lever side, luckily the carb body has virtually no wear on it (measures 6.05mm max) so I have purchased a new standard size spindle.
In my other world of VW's I know how detrimental this shaft being correct can be and I'm quite (extremely) peeved off with myself that I didn't sort all this out at day 1!!!!!!!!!!…….my fault for rushing I suppose...…
I'll drop a note back here on how the car reacts once it's been rebuilt.
On a side note the bushes for the main spindle are plastic, has anyone ever machined and fitted brass ones? I used to do them with the VW's ok (in fact I had all the lads asking me to machine them and made little tools for fitting them)……..I might do this on the Fiat carb?....
Cheers
Rob
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