Initial Z Posted June 21, 2006 Share Posted June 21, 2006 I'm looking into replacing my flat top carbs for my 73 Z with the earlier round top SU carbs but don't know if there a certain year of round top SU I should get? Are all round tops and components the same? If not what's the best version / combination of components for producing power? thanks, nate Quote Link to comment Share on other sites More sharing options...
Twizted Posted June 21, 2006 Share Posted June 21, 2006 I've had good luck with the 72's I had. Was also told that they were the ones to keep when posed with the same question. But I'm no carb expert, that's just my experience. Quote Link to comment Share on other sites More sharing options...
veritech-z Posted June 21, 2006 Share Posted June 21, 2006 Why not go for the 2" jaguar su's instead of the 1 3/4" datsun units? Before I settled on doing megasquirt, I spoke with a shop that does mini cooper hot rod engines about the suitability of using su carbs with a turbo, and they told me that they use a jaguar su just like it sits to turbocharge those engines (but I'm pretty sure they draw through it instead of doing blow-through). Quote Link to comment Share on other sites More sharing options...
bjhines Posted June 21, 2006 Share Posted June 21, 2006 The Bently Blower featured on "Ultimate cars" had dual pull through SUs on a front mounted roots blower dating from the early 1930s.... Quote Link to comment Share on other sites More sharing options...
Initial Z Posted June 23, 2006 Author Share Posted June 23, 2006 Why not go for the 2" jaguar su's instead of the 1 3/4" datsun units? Before I settled on doing megasquirt, I spoke with a shop that does mini cooper hot rod engines about the suitability of using su carbs with a turbo, and they told me that they use a jaguar su just like it sits to turbocharge those engines (but I'm pretty sure they draw through it instead of doing blow-through). well I'm trying to make a car that i can race in scca road races so i have to use the SU carbs from the Z cars, otherwise I'ed look into that. Thanks though. Quote Link to comment Share on other sites More sharing options...
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