Need a source for good quality fitting Zenith Throttle Plates 1 Attachment(s)
In the book Restoring Model A and B Carburetors the "Rex" Reheis Way it states the throttle plate should do a good job of sealing the throttle passageway when closed. When shining a light through the carburetor, there should be no light around the edges of the throttle plate (see attached image).
I have a bunch of throttle plates that don't completely seal and looked at the various vendors that sell these but they all look the same to me. Can anyone recommend the best source for good fitting throttle plates. Thanks, |
Re: Need a source for good quality fitting Zenith Throttle Plates Probably only one manufacturer that all the vendors use. In the back of my mind I'm thinking they only fit one way to be correct.
Paul in CT |
Re: Need a source for good quality fitting Zenith Throttle Plates I can't see much from the pics, but, it appears that the idle speed screw isn't backed off enough.
Back off the speed screw, loosen the throttle plate screws, center the plate and tighten the screws. I don't think I can remember ever changing a throttle plate on any carburetor. They are not subject to wear. |
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Re: Need a source for good quality fitting Zenith Throttle Plates The throttle plate has to be centered with idle speed screw backed all the way so the plate can close, loosen the 2 screws so the plate can move, tap it some to settle it, tighten the screws
The wear to look for is near the throttle shaft, if it leaks too much there the idle speed screw has to be backed out and the idle fuel holes won't get proper airflow by them and it will make it harder to get good slow idle |
Re: Need a source for good quality fitting Zenith Throttle Plates Good Morning...I would speak to Dave Renner at Renner's Corner.734-428-8424 He is a good guy and will have the parts and information you need. Ernie in Arizona
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Re: Need a source for good quality fitting Zenith Throttle Plates Haven't tried any replacements. Deburred originals work good.
I have several extras if that would help. I tap them home to get a good tight fit. |
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Re: Need a source for good quality fitting Zenith Throttle Plates Bratton's had a local machine shop make them to the original print. https://www.brattons.com/zenith-throttle-plate.html
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