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Old 12 Dec 2017, 06:18 (Ref:3786475)   #46
Join Date: Jul 2003
San Diego, CA, USA
Posts: 76
rkshanahan should be qualifying in the top 10 on the grid
SCA update

It has been years since I last posted about my SCA engine projects, so I thought it was time for an update in case anyone was interested.

Since my last post I have completed 3 of the 5 engines I bought, plus bought another one. I have completed one carbureted SCA and two injected SCAs. The carbureted engine and one of the injected engines went with my old Lola T60 which I sold to Robs Lamplough in the UK about 5 years ago. The remaining injected SCA is going in my current Lola T60 which I plan to sort out and then ship to the UK this winter. I still have the one SCC engine and the partially assembled SCB, plus the injected SCA I bought recently. The problem with the SCC and SCB is that I realized they are much less desirable than an SCA. The only real market for these engines is in Europe, particularly the UK, and for that they have to be 1000 cc. I was going to build the SCB for use here in the US where it would be legal (it would have to run against TwinCam-powered cars), but I have never kept a car here in the US long enough to make an SCB of any use. I had inquiries from Australia for both the SCC and SCB, but both of those deals fizzled out, so here they sit.

The Lucas injection really made the engines come alive. The two injected engines I built both put out a little under 140 hp @9500 rpm on the engine dyno. This is slightly less than Cosworth claimed for their ultimate 1966 engine (142 bhp @ 11,200), but I have used relatively mild cams that give a very broad torque band and the result has been a very drivable engine. I have attached a photo of the first injected SCA I built plus the dyno results for it. Note that there is not a lot of torque, but the curve is almost flat from 6000 rpm to 9500 rpm, which is a very useful rev range.


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Injected SCA.JPG  
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File Type: doc SCA dyno chart.doc (49.0 KB, 14 views)
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Old 24 Dec 2017, 04:59 (Ref:3788941)   #47
Bryan Miller
Join Date: Apr 2003
Kiama , N.S.W. Australia
Posts: 1,379
Bryan Miller should be qualifying in the top 10 on the grid

Congratulatios on these projects.
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Old 29 Jan 2018, 13:34 (Ref:3796601)   #48
Join Date: Jan 2018
Posts: 3
AnnecyRacer should be qualifying in the top 10 on the grid
Any more news on the SCA engines please. Not much written about these jewels and as such am interested in reading whatever's out there. Have an ambition to put an engine together as I slowly, very slowly collect parts. Managed to procure three Cosworth con rods with used pistons along with four unused Holbay rods and pistons recently. Have a block too but that's about it. A long way to go....
Are there any eng. drawings available, might need to make or have parts made such as gears etc.
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Old 13 Feb 2018, 18:16 (Ref:3801049)   #49
Join Date: Jul 2003
San Diego, CA, USA
Posts: 76
rkshanahan should be qualifying in the top 10 on the grid
SCA parts

Hi AnnecyRacer,

The best source for parts is going to be Geoff Richardson Engineering. They make all the parts for the SCA including the cylinder head casting. Modatek in the UK is the official parts supplier for historic Cosworth engines, and many of the parts are available through them. As to drawings, I have seen copies of the original drawings for a couple of the parts on the internet, but only for a couple of random "bits and bobs".

As to used parts, a friend of mine bought a bare SCA head casting off of Ebay a couple of years ago, but something like that would be a really rare occurrence. Check out Len Selby's historic racing parts website, where I have bought some good used parts. Be careful about identifying the parts, as Len can't be an expert on everything and he therefore has to rely on the sellers descriptions. Len provides good photos of the parts so you can look them over carefully before you buy.

You can also check the 1-litre Formula Two Facebook page. They have a parts for sale section, and I have some crankshafts, flywheels, etc. advertised there.

Good luck!

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