The 4 and 5, Explained

Of course, it’s Iain Tyrrell talking about Aston Martin’s DB4 and DB5, and the differences thereof.  Here’s the DB4:

…and the DB5:

Along the way, you’ll also learn the difference between the SU and Weber carburetors, and why the early Sixties saw cars become more reliable and less prone to breakdown than their predecessors…

…and then there’s Iain having a Gentleman’s Moment as he gets a DB4’s engine to howl.

Delightful.

6 comments

  1. I’ve been suffering with about a 60 year luv affair with the DB5, ‘specially the one with sheen gunz.

      1. ……. or the extendable sharpened ” Ben Hur” knock off spinners. Thats some clever engineering to make those functionable. But then the same engineers also managed to somehow squeeze a retractable 50 Cal into the 8″ space behind the parking light without interfering with the front wheel.

  2. I fully agree with Ian’s description of the difference in performance between SU’s and Webbers. My TR-4 had twin SU’s and would pull smoothly from low RPM’s whereas my 914-6 had dual triple throat Webbers and little power below 3,000 RPM when it came alive. The same applied to any early 911. Thats why they always were driven around at higher rev ranges. Even the Mechanically Fuel Injected “S” engines were driven that way but that was more a function of the more aggressive Cams in the S.

    The Webbers had more ability to be adjusted. I changed the Jets in mine when I moved to Denver from Sea level Boston. Not a complex job, just a lot of fiddly small parts in something apparently designed by crazed Italian watchmakers.

  3. Had a client with a DB-5 convertible when I was located in San Diego back in the 80’s. He brought the car in for a minor look-see one week, and in a conversation I mentioned that I was probably going up to L.A. for the week-end. He promptly volunteered that I should take the Aston, as he never gets a chance to air it out.
    It was a “Marvelous Darling” trip.

  4. Damn you Kim, after watching Terrell I am now wishing I had not sold off my 1964 E type with the 3.8 six and triple SU. Sigh! Then again, at my currebt age (sailed well past 70 this month) I am not sure I would be able to climb in and out much less fit between the seat and steering wheel. Still, the video was a treat.

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