Lotus Elan and Lotus Elan Plus 2 Forums

Posted: **Fri May 02, 2008 2:26 pm**

robcall wrote:
mikealdren wrote:Russ,

As to the origins of the 907, it was originally based on the Vauxhall engine. Rob, I think you're unfair describing it as a Van engine. Although it was used in the CF van, it was primarily used in the cars (Victor, Magnum, Viva, Victor Firenza etc). Commercial factors led to Lotus eventually casting their own blocks and taking it all in house. Vauxhall then brought out its own twin cam head and had great success in rallying (Firenza and Chevette HS) although, if I remember correctly, they also got caught using Lotus heads at one point!

Mike

Only to the extent that Lotus did their head testing in Bedford vans.
Do you have a reference to the 907 being based on the Vauxhall engine?
All mine show the block only being used to test the Lotus head!

Have a look at this from Hugh Haskell's book Colin Chapman Lotus Engineering

Sean

Posted: **Fri May 02, 2008 4:55 pm**

Here's the 907 engine in a lotus7.
http://vrd.snagroup.com/Lotus7_1.htm

Posted: **Fri May 02, 2008 5:24 pm**

Great reference Sean!
I'd still describe the all-alloy Lotus built 907 as a Lotus engine

As an example I had a small oil leak from the distributor in the Excel.
The seal is a Lotus only part! It was cheaper to have the distibutor modified to accept a reguar sized seal than place a Lotus one!

Posted: **Fri May 02, 2008 11:10 pm**

robcall wrote:Great reference Sean!
I'd still describe the all-alloy Lotus built 907 as a Lotus engine

Yes, of course it's a Lotus engine, just as the Ford 1500 was transformed into the Twincam.

The magical ingredient is that Chapman's genius has been added !

Sean

Posted: **Sat May 03, 2008 12:55 am**

Ehh-no!-to be specific thats the Lotus-Ford Twincam!

You won't Vauxhall or Ford or Isuzu or Toyota or anything else stamped on the 907 castings!

Heres an article that answers both sides

http://www.belchamber.org/techhistory.html

Posted: **Sat May 03, 2008 10:00 pm**

robcall wrote:Heres an article that answers both sides

http://www.belchamber.org/techhistory.html

Yes, very informative article on the Lotus 907 engine and its origins.

Sean

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