Other Cars (British & British-Inspired)

a place to discuss all our other favorite cars, especially the modified and/or V8 ones

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DynamicV8
Bob M

(1 posts)

Registered:
07/06/2021 09:16PM

Main British Car:


4.5-litre Daimler V8 upgrades
Posted by: DynamicV8
Date: July 06, 2021 09:41PM

Hello, having read an old thread on Daimler Dart SP250 V8 upgrades where someone was able to bore and stroke it to 3.3-litres+. Am curious to know if anyone else has managed to do the same with the even rarer 4.5-litre Daimler V8 and has been able to discover its natural displacement limit?

Jaguar at one time was said to have looked at a 290+ hp 5-litre version during the development of the Mk10 before the idea was dismissed when it outperformed the 3.8-litre XK6, yet how much larger could the Daimler V8 have feasibly grown beyond 5-litres?

Another fascinating tidbit would be that the true output of the 4.5-litre V8 was actually said to be underestimated by some 30-40 hp, since Daimler's dyno was limited to 220 hp.


ag1234
Arthur Gertz

(144 posts)

Registered:
03/29/2023 08:26PM

Main British Car:


Re: 4.5-litre Daimler V8 upgrades
Posted by: ag1234
Date: October 05, 2024 06:40PM

Missed opportunities, brought to you by, "Not Invented Here", (Jaguar),


Moderator
Curtis Jacobson
Portland Oregon
(4615 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: 4.5-litre Daimler V8 upgrades
Posted by: Moderator
Date: October 07, 2024 10:21AM

The Daimler engines fail to capture my imagination because they're both extroardinarily scarce plus also quite heavy for their size. Maybe they could be built-up to great effect... but I think there's a more obvious British V8 that people should be thinking about.

The Rolls Royce (and Bentley) L-series engines were built for 61 years. They're plentiful, relatively affordable, and every part on them is top quality. Aluminum block and heads. Obviously, they're rather large for an MG or a Triumph... but I've always suspected one could be a big upgrade in a Jaguar sedan or XJS. If I were building one, I'd certainly plan on custom fuel injection and crank-fired ignition. Custom cam. Lightened crank? The big question would be blower or turbo.



Edited 1 time(s). Last edit at 10/07/2024 03:56PM by Moderator.


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