Re: 225

["'D J' via The 1962 to 1965 Mopar Mail List Clubhouse" <1962to1965mopars@xxxxxxxxxxxxxxxx>]

Interesting. But even an inch lower can mean the difference between hitting the hood upon closer? And in Australia, they lengthen the bay, are the cars the exact same as the American cars and are you sure they didn't low the front suspension and thus lower the engine mounts, making for more room. Whatever the reason, they slanted it forsome reason. Probably so people like us can debate it to he** freezes over, lol.

DJ

--------------------------------------------
On Tue, 10/7/14, Ray Bell <raybell46@xxxxxxxxx> wrote:

 Subject: Re: 225
 To: 1962to1965mopars@xxxxxxxxxxxxxxxx
 Date: Tuesday, October 7, 2014, 7:26 AM
 
 That's an
 interesting article. It lends weight to the whole idea that
 a significant part of the slant's slant was to give room
 for an efficient manifold. This is mentioned, as I posted
 previously, on the Allpar page referenced by 64ragtop.
 I get the impression that many are not so
 impressed by my reasonings and suggestions, so I've used
 the sectional drawing of the slant from the Allpar page to
 make a composite picture that shows the slant slanted at
 30° alongside the engine brought back up to the
 vertical.
 You can clearly see that the height of the engine
 effectively doesn't change. Critically, the ports are at
 the same height and so the carburettor, the highest point of
 the engine, is committed to the same altitude as it would
 have been with the engine vertical. 
 The importance of raw engine height is further
 degraded by the fact that the manifold runs uphill from the
 ports. And my second pic, also from the Allpar page, shows
 clearly how the air cleaner is several inches above the
 height of the valve cover and would have remained so if the
 engine had been upright.
 So we have a PRESS RELEASE that says that engine
 height was a reason for the design. This myth, in my view,
 is busted.
 As far as the slant being to allow the water pump
 to be beside the engine is concerned, that's another
 product of the fertile minds of the promotional people.
 It's not hard to find vertical engines with the water
 pump beside the block.
 Lower centre of gravity - that is certainly the
 case. I would think the centre of gravity of the engine
 would have been lowered by anything up to an
 inch.
 The fourth item on the press release related to
 accessibility of the accessories. As has been pointed out,
 distributor access isn't good, but pretty much
 everything else benefitted from the slant.
 Another point in favour of the manifold
 efficiency being a major factor is the need for the manifold
 to avoid clashing with power boosters and brake master
 cylinders.
 To further emphasise this, I will point to the
 upright design of the Hemi 6 engine with its similar
 manifolding. In Australia the power boosters and master
 cylinders are on the opposite side of the car so there was
 no need to cant the engine. That engine is larger than the
 slant, it sits under exactly the same bonnet (hood) as the
 slant did in the same car but it is longer because of its
 bigger bore. Even so the water pump is not offset, but the
 engine bay was lengthened to cope.
 
 
 
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