They work but I feel they could do better. Would like another opinion
Tk
Sent from my iPhone
On Feb 22, 2010, at 9:03 PM, gtwincams@gmail.com wrote:
> Different animal, Tony. Webers and similar fixed choke carbs work
> differently than CD carbs like Strombergs and SUs.
> Keith Frank is the Weber jet developer Sarto is referring to, and in
> my conversations with him over the years he has indicated that he is
> not a ZS expert. Are you having problems with your carbs?
> Greg Tatarian
> Elan S4
> Sent via BlackBerry by AT&T
>
> -----Original Message-----
> From: Tony Korman <tonykorman@sbcglobal.net>
> Date: Mon, 22 Feb 2010 19:41:05
> To: North Bay British Car Club<nobbc@autox.team.net>
> Subject: Re: [Nobbc] Lotus owners with webers
>
> Can whoever did it do Strombergs
>
> Sent from my iPhone
>
> On Feb 21, 2010, at 12:53 AM, Sarto Rocheleau <sarto477@yahoo.com>
> wrote:
>
>> Hello All---
>> I want to make an announcement that as of today, I now have
>> perfectly tuned
>> 151 webers. No bucking, no flat spots, smooth at idle to wide open.
>> It pulls,
>> in all gears, like it had 15 more HP. and when it hit 4,500 rpm it
>> had a surge
>> of new power. Hard to believe, an old friend, Keith Franck, after
>> years of
>> research, has re-engineered the E-tubes and hypojets to perfection.
>> What he
>> has done to webers is quite scientific and over my head so I copied
>> a post
>> below of some of the details from Keith's site.
>> Sarto
>>
>>> Re: Sarto's Tuneup
>>> He already had my experimental e-tubes that were 8.35mm in diameter
>>> so the
>> impedance is okay. Next we found the front carb had the fuel level
>> set too
>> high by 1mm so we lowered it back down to 25mm. The first set of
>> hypojets to
>> get installed were .020" ones and when the rpms was elevated using
>> the idle
>> speed screw it got hung at about 2000rpms and it was spitting,
>> that's a dead
>> giveaway clue it's too lean! The stock idlejets were 45 something so
>> next we
>> stuck in .026" hypojets. That did the trick, it immediately revved
>> up and down
>> like a sewing machine. Went for a test drive and it runs absolutely
>> flawlessly. The only issue to resolve is whether or not it needs
>> apertures in
>> the first progressive holes because it did exhibit symptoms of
>> having a lazy
>> idle. Sarto installed a set of temporary apertures and just drove
>> off to test
>> if those will in fact make the slight lazy idle symptom go away.
>> Depending on
>> how that goes will determine if we need to glue in
>> the permanent apertures or not.
>>> -Keith Franck
>>>
>> He did not need the apertures after all, reducing the idle speed a
>> tad is all
>> it took to stop the lazy idle symptom. Gave him some of the 1mm and
>> 2mm
>> spacers to elevate the e-tubes to test later on. He left to go over
>> to Mike
>> Ostrov's to have Mike see the results firsthand. It runs like sewing
>> machine
>> is the best way I can describe it but also hauls ass when you want
>> too.
>>
>> We did the tuning without using an AFM. Only tuned it at this
>> juncture to get
>> the tractability perfect. I might be able to improve the fuel
>> mileage a bit
>> more but he needs to drive it to determine what it's getting now.
>> -Keith
>> One thing that is becoming obvious to me is the 151 carb responds to
>> my
>> jetting in a spectacular fashion. The improvement is pronounced
>> enough that
>> I'm seriously considering shelving my original 18s and go buy some
>> new 151s
>> with three progressive holes. I have no idea why this is the case
>> but it's for
>> real.
>> -Keith Franck
>> Mike Ostrov drove my Elan and confirmed that it runs like no other
>> Elan with
>> webers.
>> A new day for webers
>> Sarto
>> _________________
>> lotus elan 1966 S3 FHC
>> 36/5785
>> LHD
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