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  #21 (permalink)  
Old 05-11-2012, 05:18 AM
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Cobra Make, Engine: ERA FIA, 1964 289->Webers
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Sounds like you're headed in the right direction
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  #22 (permalink)  
Old 05-12-2012, 01:57 PM
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Quote:
Originally Posted by TonyLoz View Post
I finally got out to my garage last night wth my float gauges from Gene Berg. All four carbs where set quite high. What a difference... The idle changed from about 900 RPM to 1300 RPM and the engine behaved very well around town. Now I have stumbles at higher RPM. I starts to act up around 3500 RPM and seems to carry on up to 5000 RPM where I shift. Its a new motor so I havent been running it up to 6000RPM (yet). I am thinking a main jet change may fix this??

Gaining on it

Tony Loz
Tony,

I'd up the venturi size first, 37 is a bit small for a 408, you need at least 40mm.
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  #23 (permalink)  
Old 05-15-2012, 10:13 AM
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Cobra Make, Engine: PPMC Body on a modified Midstates chassis, weber fed 408
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Thanks Gary,

I trust things are good in Brisbane, I was visiting several years ago on business. Used the Watercats to get around (visiting the pubs).. You have good beer down there...

The other day my wife was asking what I was going to do now that my Cobra is "done", my response was simple. Its not done, I have Webers.... I will look into uping the venturis but I have it running pretty well right now. I have an LM1, plan on hooking things up this weekend, gather some data and see where I am at. Make adjustments from there.

Again, thank you all for your suggestions

Tony Loz
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