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Max overbore Daimler V8

Sonus
Posts: 181
Joined: Wed Apr 13, 2016 2:19 pm

Re: Max overbore Daimler V8

Post by Sonus » Fri Sep 21, 2018 2:06 pm

I was following that build on BritishV8.org, but there has been no updates for quite some time - http://forum.britishv8.org/read.php?13,34236

On another note; the last hairline crack in my block has been welded and the block handed back to the machine shop for trial fitting of the crank. We are going to make a ladder frame that connects the five main bearing caps together. We will fit ARP studs that are a bit longer to cover the 3/8" thick steel ladder frame.

Camshaft will be ordered from Penta Motorsport soon

daimlersteve
Posts: 309
Joined: Wed Mar 09, 2016 11:20 am

Re: Max overbore Daimler V8

Post by daimlersteve » Sat Sep 22, 2018 10:11 pm

Good call on the cam, at least you get a full sized base circle. Which profile are you going to get ?



steve

Sonus
Posts: 181
Joined: Wed Apr 13, 2016 2:19 pm

Re: Max overbore Daimler V8

Post by Sonus » Thu Oct 04, 2018 9:59 pm

daimlersteve wrote:
Sat Sep 22, 2018 10:11 pm
Good call on the cam, at least you get a full sized base circle. Which profile are you going to get ?



steve
Going for the same spec as Fred did for his midget
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Sonus
Posts: 181
Joined: Wed Apr 13, 2016 2:19 pm

Re: Max overbore Daimler V8

Post by Sonus » Mon Nov 12, 2018 12:29 pm

Sonus wrote:
Thu Oct 04, 2018 9:59 pm
daimlersteve wrote:
Sat Sep 22, 2018 10:11 pm
Good call on the cam, at least you get a full sized base circle. Which profile are you going to get ?



steve
Going for the same spec as Fred did for his midget
I have since decided to revise the camshaft spec. Especially regarding the overall valve lift which is excessive on a road engine IMO.

tjt77
Posts: 473
Joined: Wed Mar 23, 2016 7:01 pm

Re: Max overbore Daimler V8

Post by tjt77 » Mon Jan 28, 2019 6:06 pm

reply to DDStevie :-depending on depth of pockets, one can make ANY engine more powerful and able to contain the power with grenading. the Turner 2 1/2 v8 is an adequate engine in the SP 250 (a relatively light weight sports car) but it is inadequate in the 2 1/2 litre saloon, which minimally needs a reliable 180bhp / 180 ft lbs to pull it along and keep up with modern traffic...
if one looks at the time and costs involved to get enough power for the 2 1/2 v8 to perform satisfactorily AND hold up for a 'practical' amount of time ( say 70 k miles) its a losing proposition..
displacement is your friend when seeking power with minimal stress.. had the tuner V8 been made in 3.5- 3.8 litre it could have been more worthwhile..
Of course the daimler was pitched as different customer.. someone NOT seeking performance saloon..but style and comfort .
the weight and bulk of the turner 4.5 is a challenge, and it has same issue with rebuild costs to put the turner 4 1/2 out of the running ..( although it was viable 'back in the day' when rusted old hulks with good power trains could stile had at reasonable cost) ..they will fit in the 2 1/2 saloon..but its tight fit and there are MANY better options..
the 2 1/2 v8 is also bulky.. a 5.0 ford v8 actually fits better in same space and is far more accessible for servicing due to narrower angle V and similar in weight .. cost to acquire a 'good running' 5.0 ford V8.. between $200 and $1,000.. coast to build a 'bullet proof' 5.0- 5.5 Ford V8 with 240-280 bhp :- well under 1/2 of cost of a standard rebuild on a turner V8.. expected engine life of Ford V8 :- minimally 100k miles.. then there is the issue of gearbox and choices.. multiple 'bolt on' options with the ford V8.. (all readily available and affordable)
In Uk there are an abundance of Rover V8s..the larger displacement version put out good power with excellent longevity ..both 4.2 and 4.6 would be more than adequate in the daimler 2 1/2 litre V8 saloon.. same issue as ford with grearbox's :- ZF4 hp 22.. or the rover( ex getrag) 5 speed were standard options...
these make far more sense given the costs V value of car..
again....improving the turner V8 for more power makes sense in the SP 250..the significant cost outlay makes sense..( $12-15k++ for a reliable 160-170 bhp.... some spend considerably more) for the saloons.. only for the purist seeking originality who has no concerns for value for money.. a simple 'rebuild ' runs into well over $6k here on the 'other' side of atlantic.. there are wiser choices that can be made to extract more performance in order to have a credible car in keeping with the V8 saloons sister :- the jaguar Mk2.... which in 3.8 manual overdrive spec was the fastest production 4 door saloon available in the early '60s..and remains an adequate performer and rewarding car to drive to this day. its easy and cost effective to make the Daimler version perform even better than the Jaguar.. for considerably less outlay.. and still have that delightful V8 burble..

Warsash 2
Posts: 250
Joined: Sun Feb 28, 2016 1:53 pm

Re: Max overbore Daimler V8

Post by Warsash 2 » Mon Jan 28, 2019 7:24 pm

I know this is a bit off topic but bI must disagree TJT about the turner V8 engine power. We have both a SP250 and a V8 250 and have never found either of them short of power. Remember they are cars of the sixty's if you want a performance car the get a Jaguar XJ 8 super with the aluminium body, which I also have. I have done long distance touring in both cars which are able to keep up with traffic even on the motorways. They cruise all between 75 & 80 mph, of course in Germany. I would say with the lighter engine it is one of the best touring 4 seater much better than the Jaguar version on roadholding.
Regards

Colin

David S
Posts: 188
Joined: Sun Feb 21, 2016 9:23 am
Location: Forest of Dean

Re: Max overbore Daimler V8

Post by David S » Tue Jan 29, 2019 10:09 pm

We need to see this SP towing an Airbus on a video, there is no evidence it isn't just parking in the wrong place and destined to be run over as it's out of sight for the plane's driver!!!

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