Lotus Elan

Weber jetting

PostPost by: Boomer100E » Fri Nov 24, 2017 5:34 pm

Performance increase with Keith's new Venturi Fountain (VF) tubes in my S3 Elan (Sprint engine) was amazing!
The old gal pulls like a train to red line (and beyond), with no hint of hesitation at the dreaded transition / tip-in rpm.
Well worth the money (and import charges).
Cheers, Doug
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PostPost by: el-saturn » Fri Nov 24, 2017 6:20 pm

sounds lovely fellas: so how or where can i get these bits?? my jetting is somewhat particular with the 33chokes and 10,75mm lift, so it Looks like frank C A N help. Muchas grazias sandy ---- visited and delivered all morning Long in my S3: Martin Real, ol Buddy and Lichtensteins best cook! (Client knows me very well)
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PostPost by: seniorchristo » Fri Nov 24, 2017 6:59 pm

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PostPost by: Certified Lotus » Fri Nov 24, 2017 9:22 pm

Chris, great to hear the results! I ordered mine and now that your the ?expert? I?ll wait until the next time your at my garage to install them :D
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PostPost by: Davidb » Fri Nov 24, 2017 9:46 pm

Is the $25 the cost for one carb? i.e. 2 jets?
Thanks
'65 S2 4844
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PostPost by: seniorchristo » Fri Nov 24, 2017 10:02 pm

$25 each. They replace the emulsion tubes. You need (2) per carb. :)
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PostPost by: europatek » Sat Nov 25, 2017 11:01 am

I've got his hypo jets and of last week I now have the VF e-tubes. I swapped out the tubes I was using with the same jets 130/180. The engine felt immediately better and more tractable but restrained/rich. I swapped out the 180 for 190 dry jets and the engine came alive. The best performance and tractability I have ever had in 25 years of Weber tuning. My tuning is seat of the pants but gee it feels good/right. I need to hook up my AFR gauge to check for sure but I know it feels right just by driving. Get some. You won't look back.
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PostPost by: nmauduit » Sat Nov 25, 2017 11:37 am

europatek wrote:I've got his hypo jets and of last week I now have the VF e-tubes. I swapped out the tubes I was using with the same jets 130/180. The engine felt immediately better and more tractable but restrained/rich. I swapped out the 180 for 190 dry jets and the engine came alive. The best performance and tractability I have ever had in 25 years of Weber tuning. My tuning is seat of the pants but gee it feels good/right. I need to hook up my AFR gauge to check for sure but I know it feels right just by driving. Get some. You won't look back.


please post the result of the AFR when you get a chance, possibly with a rapid description of the tuning involved (and engine specs)
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