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| Joined: | 05-01-2005 |
| Location: | Minneapolis, Minnesota USA |
| Posts: | 575 |
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Sorry to keep you waiting... I don't visit the JHPS site every day. I'm a Lotus guy who tries to help with 907 issues from time to time, so I don't know every inch of a JH. My fuel system comments are based more on a general understanding of how fuel systems work than inch-by-inch knowledge of where the anti-siphon valve is in the JH. I can't help you with that, and will have to defer to one of those who have been there before.
Jody,
In the article on your website, you mention that the 0.046" ID orifice is no longer available. A machine shop could make one, and it would help if someone who has one handy would measure and post the overall & stepped lengths, and the stepped diameters.
Or...
On a similar but different topic on a Lotus Excel forum, guys are using Dellorto Idle Jets in lieu of an restrictor orifice in a vacuum hose. Just a thought.
0.046" would equal a 116.8 jet (1.168mm ID), well out of the range of Idle Jets, but Main Jets cover that size. There are 115, 118 & 120 Dellorto DHLA Main Jets available, and 115, 117 & 120 Weber DCOE Main Jets.
115 = 1.15mm = 0.0453"
117 = 1.17mm = 0.0461" <<<<<<
118 = 1.18mm = 0.0465" <<
120 = 1.20mm = 0.0472"
I've not tried using Main Jets for a fuel return orifice, and I may just be blowing smoke. I'm just laying it out there as an option to consider.
Regards,
Tim Engel
Last edited on 02-13-2019 11:24 pm by Esprit2