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Max overbore Daimler V8

Sonus
Posts: 165
Joined: Wed Apr 13, 2016 2:19 pm

Re: Max overbore Daimler V8

Post by Sonus » Thu Jan 25, 2018 9:55 pm

That is ideal as Ford Focus' are much easier to find here in Norway. Probably lots easier to buy cheap on ebay as well.

Regarding my initial question regarding max overbore; After feedback in this thread and a lenghty and very informative phone call to Russ Carpenter I have decided to go +150/thou overbore. New pistons are being designed for 11:1 compression ratio.

David S
Posts: 168
Joined: Sun Feb 21, 2016 9:23 am
Location: Forest of Dean

Re: Max overbore Daimler V8

Post by David S » Fri Jan 26, 2018 10:07 pm

By my reckoning that'll make it 2574cc.........
But won't the raising the compression ratio from 8.2:1 make it need higher octane petrol than currently available?
You don't want it pinking!

David

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Vortex O'Plinth
Posts: 697
Joined: Fri Feb 12, 2016 8:15 pm
Location: Gloucestershire

Re: Max overbore Daimler V8

Post by Vortex O'Plinth » Fri Jan 26, 2018 10:49 pm

David S wrote:
Fri Jan 26, 2018 10:07 pm
By my reckoning that'll make it 2574cc.........
I make it 2809cc ?
Nick

Pas d'elle yeux Rhône que nous.

daimlersteve
Posts: 284
Joined: Wed Mar 09, 2016 11:20 am

Re: Max overbore Daimler V8

Post by daimlersteve » Sat Jan 27, 2018 4:08 am

Could be a different pie in the mix.

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Vortex O'Plinth
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Location: Gloucestershire

Re: Max overbore Daimler V8

Post by Vortex O'Plinth » Sat Jan 27, 2018 9:23 am

daimlersteve wrote:
Sat Jan 27, 2018 4:08 am
Could be a different pie in the mix.
Capture.JPG
:lol: :lol:
Nick

Pas d'elle yeux Rhône que nous.

daimlersteve
Posts: 284
Joined: Wed Mar 09, 2016 11:20 am

Re: Max overbore Daimler V8

Post by daimlersteve » Sat Jan 27, 2018 10:19 am

Nah, only one of them. 2 pi r for circ. , pi r sq for area.
Apart from that , whats the goss in the old country ?

Sonus
Posts: 165
Joined: Wed Apr 13, 2016 2:19 pm

Re: Max overbore Daimler V8

Post by Sonus » Sat Jan 27, 2018 9:32 pm

David S wrote:
Fri Jan 26, 2018 10:07 pm
By my reckoning that'll make it 2574cc.........
But won't the raising the compression ratio from 8.2:1 make it need higher octane petrol than currently available?
You don't want it pinking!

David
That is 11:1 static, but probably a lot less dynamic compression due o the cam profile we are using :)

((150/1000)+3) = 3.15" in diameter or 80.01mm which should make it a tad more than 2800cc :D

Will probably ditch the eight throttle bodies and do a plenum intake with dual throttle bodies as the pulse tuning in the plenum looks like it will get us an even higher torque figure :)

daimlersteve
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Re: Max overbore Daimler V8

Post by daimlersteve » Sun Jan 28, 2018 9:10 am

sonus,
yep thats the way to go, you can get it down to the second or third harmonic with a cross ram twin plenum setup.
I've made that manifold and plenums and will get around to setting it up when the new 2.8 finally gets here.
steve.
PS, Buy Pipemax and do the calcs. Cheap as.

David S
Posts: 168
Joined: Sun Feb 21, 2016 9:23 am
Location: Forest of Dean

Re: Max overbore Daimler V8

Post by David S » Mon Jan 29, 2018 8:36 pm

Well Thanks!

I never was the sharpest tool in the box, I had used 3.015" for the diameter, Ooops!

And I always the engineer's Pi x D squared over 4 for area, then x h for volume so I don't get the Shreddies pie bit!

Anyway, it's worse now...... I am struggling with French language curtesy of Misuser Vortex O’Plinth; Nick signs off: "Pas d'elle yeux Rhône que nous" - and my Google transtale tool says that means: "Not her eyes Rhone that we".

Ummmm??

Dumfounded Dave.

Phillmore
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Joined: Sat Feb 13, 2016 1:25 pm
Location: Worcestershire Herefordshire border

Re: Max overbore Daimler V8

Post by Phillmore » Tue Jan 30, 2018 7:42 am

Re the French you seem to be without a paddle Dave ;) ;)
Andy

1954 Conquest Mk1, 1956 Conquest Mk2, 1957 Conquest Century Mk2, 1955 Austin A90 Westminster

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