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Fuel Leak From Belly http://thorp18.com/thorpforum/viewtopic.php?f=19&t=8295 |
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Author: | SHIPCHIEF [ Fri Feb 15, 2019 11:57 pm ] |
Post subject: | Re: Fuel Leak From Belly |
I just found a picture on-line of a Dukes fuel boost pump 4140-00-17, which looks like yours. The threaded holes for the fittings have a 45 degree chamfered O ring seat. I'm thinking that the washer (not a gasket) is supposed to flatten the O ring until it seals from that seat to the un-threaded gap in your (modified) bulkhead fitting. If that is going to work, I think you may need an O ring made from thicker cord. (just my perception from looking at your pics) https://picclick.com/4140-00-17-Dukes-F ... 51830.html These take AN to O ring adapters, check this link: https://www.summitracing.com/search/dep ... ing&page=3 You have a home made version of the 90 degree variety. you can see them in the link. (also some unrelated power steering fittings etc) These all have a smooth spot under the nut (no threads) for the O ring to seal when it is compressed into the chamfered space. A pull from the product description: ICT Billet AN to straight thread O-ring (ORB) adapter fittings connect AN threaded flexible hoses or rigid metal tubing to straight thread O-Ring Boss (ORB) fittings. ORB fittings are recommended for optimal leakage control in medium and high-pressure fluid systems. The seal takes place by compressing the O-ring; the threads hold the connection mechanically. If you install the correct engineered part, it might last more than 100 hours. |
Author: | Jeff J [ Sat Feb 16, 2019 9:33 am ] |
Post subject: | Re: Fuel Leak From Belly |
SHIPCHIEF wrote: If you install the correct engineered part, it might last more than 100 hours. x2 |
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