moisture on windshield

so feel a little dump asking so take it easy on me, but just started driving blown top sportsman and getting moisture on windshield going down track. it is this condensation off the hat? I pressurized system and sprayed nozzles and didn't find any leaks?

thanks

 

new combo

mike, so far only ran in the day. only a few runs under my belt but so far each time.

thanks

 

I've seen aeriated nozzle bodies spray fuel.

 

nozzles

they are aerated, aren't these necessary for hats nozzles?

 

Although they are certainly the norm, they are not necessary.

I have run large enough nozzle jets in them before that I got more fuel spray then I was comfortable with so I went to non-aerated.

Could you be getting the sweat off the hat?

 

Mike...Have you ever monitored injector hat vacuum/pressure to see what it is at speed? Have you ever tested various diverters inside a hat to see what effect they have on atmospheric pressures in different areas of the hat and around the top of the supercharger above the rotors?

 

Camera

Good advise. I will put camera on it. Thanks

Is the suction cup mounting on roof good for 200 mph?

 

I had some aerated nozzles that had a small jet inside them, boy did they blow fuel on the windshield. What were these made for?

 

Alcohol will leave a white residue almost salt water looking stain on your windshield when it dries while condensation will evaporate with little or no staining.

 

Aerated nozzles will spray some fuel when you step off the throttle.

 

j

if it was the nozzles would this show up during my pressure check? I put 100#s on open k vavle and sprayed nozzles with soapy water.

 

Back in the day Waterman as well as a couple of other guys made a device called a "windshield saver" that went around Aerated nozzles that had small tubes that would direct the full spray down and away from the windshield when you let off the throttle.

 

In thinking about it, could the fuel leaking from the aerated hat nozzles on shut down be caused from air blowing by them and causing a syphon?

We see them dripping fuel all the time in the pits with sprint car and midget down nozzles. My thought is that the air blowing buy them at 200mph could easily syphon the remaining fuel from the lines if conditions are right. This could be why it's only seen on some cars as the aerodynamic characteristics are different from car to car. Could a small wicker/air deflector ahead of the nozzles prevent this?

 

I have had this problem once due to an injector hose that had a small crack in the brass fitting. it would only spray fuel under load and power but not at idle or bliping the throttle on the stands.

 

If they are stainless lines, back the nut off and check for a crack at the bottom of the flare. Many times you need to push around on the flare with your fingers to get the crack to become visible.

 

Update

Back out this weekend and no moisture while under acceleration but once in shutdown area and after motor dies it will spray a large amount on windshield. It's alcohol as it is leaving residue and it is coming from nozzles as this is apparent when inspecting after run. So conclusion is it has to be the vented nozzles. Will change these out and give it another try.

Thanks all for suggestions.