So.
As I thought the engine I have is from an SD1
39A00001A SD1 Factory recon 9.35:1 cr 1982-87
which explains why it has the wrong rocker covers, the oil filler is on the wrong side and why there is an oil temp sensor. it may also explain why it's on SUs and the air filter is missing its pipe work for the emissions.
So I have a higher compression ratio too.
Unleaded? is it happy to run on it or should I be chucking some additives in?
Seb
Unleaded and the V8 (from an SD1)
Unleaded and the V8 (from an SD1)
1970 Spitfire MKIII
1981 Laser 1 88643
1982 Stage 1 v8 SW
1992 Laser 2 9101 "Purple Reign"
2000 Laser Pico 4050
2001 Brompton M3L
2010 VW California GP 140 SE
2010 Brompton M6L
2010 Venture Ranger 16 Canoe
2010 Cube Ltd Pro
1981 Laser 1 88643
1982 Stage 1 v8 SW
1992 Laser 2 9101 "Purple Reign"
2000 Laser Pico 4050
2001 Brompton M3L
2010 VW California GP 140 SE
2010 Brompton M6L
2010 Venture Ranger 16 Canoe
2010 Cube Ltd Pro
octane
the other reason to ask is that when I had a P5B it's preferred tipple was 5star!
1970 Spitfire MKIII
1981 Laser 1 88643
1982 Stage 1 v8 SW
1992 Laser 2 9101 "Purple Reign"
2000 Laser Pico 4050
2001 Brompton M3L
2010 VW California GP 140 SE
2010 Brompton M6L
2010 Venture Ranger 16 Canoe
2010 Cube Ltd Pro
1981 Laser 1 88643
1982 Stage 1 v8 SW
1992 Laser 2 9101 "Purple Reign"
2000 Laser Pico 4050
2001 Brompton M3L
2010 VW California GP 140 SE
2010 Brompton M6L
2010 Venture Ranger 16 Canoe
2010 Cube Ltd Pro
-
- Posts: 68
- Joined: Wed Nov 05, 2008 9:13 am
- Location: Preston England
unleaded
unleaded can be used but over time the valves may regress in to the cylinder head . The lead in leaded petrol acted like a cushion between the valve and the valve seat . There is a article in either LRO or LRM this month on how to tell if your cylinder head as been converted to run on unleaded. Hope this helps sorry for getting technical you probaly know this already Cheers Darren
1981 Stage 1 SW
If it's not broken don't try to fix it
If it's not broken don't try to fix it
but
the SD1 was destined for the American market so it had enlarged valves and valves. According to some this means that it'll run on Unleaded.
Early engines will not, even though they are steel seats.
Early engines will not, even though they are steel seats.
1970 Spitfire MKIII
1981 Laser 1 88643
1982 Stage 1 v8 SW
1992 Laser 2 9101 "Purple Reign"
2000 Laser Pico 4050
2001 Brompton M3L
2010 VW California GP 140 SE
2010 Brompton M6L
2010 Venture Ranger 16 Canoe
2010 Cube Ltd Pro
1981 Laser 1 88643
1982 Stage 1 v8 SW
1992 Laser 2 9101 "Purple Reign"
2000 Laser Pico 4050
2001 Brompton M3L
2010 VW California GP 140 SE
2010 Brompton M6L
2010 Venture Ranger 16 Canoe
2010 Cube Ltd Pro