This is all consistent with what the Weber gurus told me--the last thing you
want to do is try to brace up a carb or tie it tightly to the intake
manifold--the engine is shaking like one of those fat lady belt thingies.
You want the carb to float, and since it's relatively lightweight it will
have it's on resonance points, completely different from the engine. On
Peyote I've found I can create flat spots by tightening the manifold bolts
too much. Keep them loose and they won't leak, tighten them up and they do.
Weird, but it makes sense. I make sure I have .030" between the turns of the
spring washers, which have three turns in the setup I use. Much less than
that and bad stuff starts happening. Much more and I don't compress the
O-rings and I get leaks.
-----Original Message-----
From: BOB KRAMER [mailto:rkramer3@austin.rr.com]
Sent: Thursday, May 05, 2005 6:17 PM
To: Joe Boruch; Bill Babcock
Cc: garygret@sbcglobal.net; vinttr4@geneseo.net; fot@autox.team.net
Subject: Re: float bowls on HS6 carbs
I used a thick 2" O-ring held in place by a simple groove I put in the
isolator block. It required longer studs but eliminated 99% of the problem.
Bob Kramer
rkramer3@austin.rr.com
----- Original Message -----
From: "Joe Boruch" <jaboruch@netzero.net>
To: <BillB@bnj.com>
Cc: <garygret@sbcglobal.net>; <vinttr4@geneseo.net>; <fot@autox.team.net>
Sent: Thursday, May 05, 2005 9:09 AM
Subject: RE: float bowls on HS6 carbs
> Yes, you just need to elongate 2 of the holes for the plate that gets
> sandwiched between the carbs and manifold. Also longer studs to use
> nylock nuts will be needed. My SUs are set up that way. Joe(B)
>
> -- Bill Babcock <BillB@bnj.com> wrote:
> I wonder if Weber mounts will work on SU carbs
>
> -----Original Message-----
> From: owner-fot@autox.team.net [mailto:owner-fot@autox.team.net] On
> Behalf Of Gary & Gretchen
> Sent: Wednesday, May 04, 2005 8:19 PM
> To: Jack W. Drews; fot@autox.team.net
> Subject: Re: float bowls on HS6 carbs
>
> Jack,
>
> I've been amazed what fatigues and breaks off a 40 year old race car.
> A couple years ago I had one of the float chamber bolts snap off at
> the tip where it screws into the carb housing. Happily the chamber
> just dropped an inch and killed two cylinders without gushing fuel all
> over and starting a fire. It could have been a bit loose and the high
> vibration killed it - who thinks to check the things, expecially since
> they're behind the choke linkage and quite difficult to access. I
> found some soft rubber mounts in place of the hard mounts and loctited
> the heck out of the replacement bolts.
>
> But I have only a half dozen events since so no real history to report.
>
> Gary Schneider
> 37 EP 62 TR4
>
> ----- Original Message -----
> From: "Jack W. Drews" <vinttr4@geneseo.net>
> To: <fot@autox.team.net>
> Sent: Tuesday, May 03, 2005 9:01 PM
> Subject: float bowls on HS6 carbs
>
>
>> Sunday at the Mitty I came in from the race running on two cylinders.
>> The cause was that the single bolt holding the float chamber to the
>> body of one carb had fractured and the float chamber was hanging by the
hoses.
>>
>> I've seen this happen on two other cars and both resulted in
>> underhood fires. Thank goodness I didn't have that, but I could have.
>> I thought those two incidents were too isolated to worry about. Wrongo.
>>
>> Has anybody else had this problem? If so, does anybody have a way to
>> prevent this, other than replacing the 40-year-old bolt?
>>
>> uncle jack
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