[Fot] Weber tuning help please

[Bill Babcock]

No, they probably wont work unless you find some way to stabilize the webers against the manifold. Otherwise the vibration will make leaks at some RPM. And if you did you’ll probably turn the fuel in the float bowls into foam. My preferred mount is the plastic adapters with O-rings on both sides. They use a rubber double-cone washer with cups over the ends for stabilizing, or sometimes flat springs like a bellville washer. I tweak them down until they are snug and then back off a turn. Using locknuts of course. 
I don’t know what remflex gaskets are. The ones I use look like this:
http://www.ponostyle.com/wp-content/uploads/2015/04/weber.jpg

> On May 3, 2015, at 11:52 AM, Jim Gray <toodamnfunky at comcast.net> wrote:
> 
> Bill,
> You were right but I don’t have a good solution at the moment. Only # 3 reacted to the carb cleaner and that suprises me a bit.
> I have the thick remflex gaskets in there. One side of the intake manifold on # 3 had barely any contact with the gasket.
> The remflex and the Moss gaskets have 1-11/16” inside diameter openings at the intakes. My cannon manifolds are 1-7/16”
> and the cannon’s don’t have a lot of meat for bearing surface around the lower area’s around 5 o’clock and 7 o’clock.
> As best I can tell though it was actually leaking on # 3 at 3 o’clock right next to the clamp bolt.
> I could actually look next to the clamp bolt and see where the gap was.
> I need to either find different gaskets with a smaller ID or make my own.
> Have you, or anybody had success at making their own intake/exhaust gaskets from regular gasket material ?
> jim
>  
>  
>  
> From: Bill Babcock [mailto:Bill at ponostyle.com <mailto:Bill at ponostyle.com>] 
> Sent: Sunday, May 03, 2015 1:21 PM
> To: Jim Gray
> Cc: fot at autox.team.net <mailto:fot at autox.team.net>
> Subject: Re: [Fot] Weber tuning help please
>  
> Sounds like an air leak somewhere. Perhaps it gets overcome at full throttle or is worsened at those specific RPMs because of harmonics in the vibration of the carb. Might be a crack or flaw in the carb, but more likely it’s in the mounting, either O rings or some other flaw. They can be hard to detect and locate. You could use the carb cleaner method—spray a little at each joint or suspect area and listen for changes in engine sound. I’ve used the ultrasonic detector I use for finding leaks in surfboards to some effect, a leak sounds like a calliope, but there’s a lot of other noise to sort it from. 
>  
>> On May 3, 2015, at 8:40 AM, Jim Gray via Fot <fot at autox.team.net <mailto:fot at autox.team.net>> wrote:
>>  
>> I just installed my webers and I’m running into something not covered in anything I’ve read so far.
>> At cruise speed which I do on the street, 2500  -3000 RPM my exhaust gas temps on # 4  are 100 plus degrees
>> over # 1and will climb to 1400 if I stay at that throttle setting. Under wide open throttle they equalize and seem
>> to settle in at about 1300.
>> However, I think this may be symptomatic of my other issue. When I’m tuning the idle air screws, open them up until
>> it starts to miss & so on, I can get a predictable stumble from three out of the four screws.
>> The screw on # 3 has no effect on the idle no matter how far I run it in or out.
>> Also , when I put my syncrometers on #’s 3 and 4 they are significantly different.
>> I’m not going to get my dyno tune before the first race in two weeks so I’m left to figure it out on my own for now.
>> Any help would be greatly appreciated,
>> Jim g
>>  
>> <image002.jpg>
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>  
> Bill Babcock
> Bill at ponostyle.com <mailto:Bill at ponostyle.com>
> Editor: Ponostyle
> Celebrating Water
>  
> Editor: Xtreme Geezer
> Fitness and Fun After Forty
> 503.936.7660
> http://www.PonoStyle.com <http://www.ponostyle.com/>
> http://www.Xgeez.com <http://www.xgeez.com/>
Bill Babcock
Bill at ponostyle.com
Editor: Ponostyle
Celebrating Water

Editor: Xtreme Geezer
Fitness and Fun After Forty
503.936.7660
http://www.PonoStyle.com
http://www.Xgeez.com

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