Lotus Elan

Cosworth Mk 16 engine & Modern Counterpart

PostPost by: SJ Lambert » Wed Jul 16, 2014 2:04 pm

I had a fit when I realised there were only sleeves in one side, Dad didn't even bat an eyelid, as far as he was concerned it was no big deal, they had a few early half moon heads before getting in the Cosworth motors and I gather that they (Elfin Racing Cars) weren't fussed about the lack of sleeves, they certainly didn't have any problems with any of them whilst Dad was there - from 64 through to 68 - he left before any lip seal motors arrived.
Ford Escort Mk1 Lotus Twin Cam
Elfin Monocoque (Twin Cam)
Elfin Type 300 (Holbay S65 - 120E) mechanic

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PostPost by: SJ Lambert » Wed Jul 16, 2014 2:53 pm

Cosworth Twin Cam engine in a Brabham at Longford in 64 (Ed Holly's car these days - he'll correct me if I'm wrong!) - Earlier than our Mk 16 in any event - a half moon head on it - Ed says it gives power these days! (I'm sure it did back then too!)

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Ford Escort Mk1 Lotus Twin Cam
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PostPost by: SJ Lambert » Sun Dec 07, 2014 12:32 pm

Finally mounted my ring grinder onto the bench and gapped the piston rings for the new motor in readiness for the Christmas/New Year working bee.

Meanwhile, spring/shockie units and a few other bits are receiving a coat of black paint.
Ford Escort Mk1 Lotus Twin Cam
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Elfin Type 300 (Holbay S65 - 120E) mechanic

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PostPost by: rgh0 » Sun Dec 07, 2014 12:54 pm

I saw a new "half moon" head at Sandown in an open wheeler. I guess its one of the new USA cats heads. complete with half moons but nice big inlet runners :D Much easier to get big HP compared to the skinny little inlets on the original half moon heads.

cheers
'Rohan
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PostPost by: SJ Lambert » Sat Jan 03, 2015 2:08 pm

image.jpg and


I think there's a Larner assembled "new" half moon head motor going into another Mono too!

I'm making the boss for front mounted tachometer drive in magnesium at the moment.
Ford Escort Mk1 Lotus Twin Cam
Elfin Monocoque (Twin Cam)
Elfin Type 300 (Holbay S65 - 120E) mechanic

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PostPost by: SJ Lambert » Sun Jan 04, 2015 12:55 pm

image.jpg and
Ford Escort Mk1 Lotus Twin Cam
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Elfin Type 300 (Holbay S65 - 120E) mechanic

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PostPost by: SJ Lambert » Sun Jan 04, 2015 12:57 pm

image.jpg and
Ford Escort Mk1 Lotus Twin Cam
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Elfin Type 300 (Holbay S65 - 120E) mechanic

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PostPost by: SJ Lambert » Fri Jan 09, 2015 10:47 am

image.jpg and



Pistons for the new motor have had a shave!
Ford Escort Mk1 Lotus Twin Cam
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Elfin Type 300 (Holbay S65 - 120E) mechanic

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PostPost by: SJ Lambert » Sat Jan 10, 2015 7:30 am

image.jpg and


New chest getting the treatment
Ford Escort Mk1 Lotus Twin Cam
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Elfin Type 300 (Holbay S65 - 120E) mechanic

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PostPost by: SJ Lambert » Thu Jan 22, 2015 10:52 am

image.jpg and


New head's getting a once over!
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PostPost by: SJ Lambert » Thu Jan 22, 2015 12:28 pm

image.jpg and
Just under 41mm back to the cam bearing
Ford Escort Mk1 Lotus Twin Cam
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PostPost by: SJ Lambert » Thu Jan 22, 2015 1:20 pm

P1100135.JPG and


A couple of buckets wanted to stay home - so it's cam spin check tomorrow night!
Ford Escort Mk1 Lotus Twin Cam
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Elfin Type 300 (Holbay S65 - 120E) mechanic

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PostPost by: SJ Lambert » Thu Jan 22, 2015 9:12 pm

image.jpg and
...
Last edited by SJ Lambert on Wed Jan 28, 2015 9:40 am, edited 2 times in total.
Ford Escort Mk1 Lotus Twin Cam
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Elfin Type 300 (Holbay S65 - 120E) mechanic

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PostPost by: StressCraxx » Fri Jan 23, 2015 5:26 am

SJ Lambert wrote:
image.jpg


Surface scratch, hopefully not hairline crack.


Easy to check with dye penetrant before you put it back together!

Regards,
Dan
There is no cure for Lotus, only treatment.
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PostPost by: SJ Lambert » Sat Jan 24, 2015 1:31 am

image.jpg and
Ford Escort Mk1 Lotus Twin Cam
Elfin Monocoque (Twin Cam)
Elfin Type 300 (Holbay S65 - 120E) mechanic

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SJ Lambert
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