Dutra Duals
What’s up!
Getting ready to start giving my dart some love under the engine bay. I have a few questions and looking for all the help I can get. Money is always an issue and the last thing I want is to spend it buying stuff I don’t need just because they look nice.
The car is a 1964 Dodge Dart GT push button. Everything Under the hood is stock.
Question 1.
I purchased a used set of Dual Dutra Duals from a member. He mentioned they are the new aussiespeed castings.
What issues will I have or what parts will I need to swap out to make these fit?
Questions 2
I plan on upgrading the intake manifold to either offenhauser, Clifford or possibly aussiespeed shop. Would it make more sense to swap these out at the same time? Does one affect the other?
Any help would be appreciated it. If a link is out there of someone’s post then send it to me.
Thank you!
The new Aussie Speed castings have revised the rear manifold to better clear the starter, I bet that you will still need a mini starter.
With the Aussie Speed exhaust manifolds you loose the exhaust heat hot spot below the carb. On my Dual Dutra install I modified the intake manifold egr cavity to be a hot water hot spot. AussieSpeed also sells a weld on hot spot chamber or one could be fabricated.
You also loose the stock choke pull off.
There are electric options available.
On the original Dutra’s there was interference with the block manufacturing lugs, they had to be ground down or sawed off, don’t know if the new ones fixed that.
Concerning intakes, the Offy has the hot spot pad that matches to the stock exhaust manifold, which you will no longer have.
Some Cliffords have a cast in hot water plenum, some don’t, so a Clifford with built in hot water heat capability would be good for you, if are running a carb.
As mentioned AussieSpeed has an optional weld on hot water box.
Since the intake and exhaust share the same gasket, makes sense to do them at the same time.
