Am I right in saying that a D0698702 engine number is from a 1200 casing. Does that mean it's a 1200 engine, or just that the original factory casing was bored out to 1200cc ??
In understand that the 1200 lump pushes out about 34bhp, which may well explain it's sluggish approach to tarmac.
Knighty, where do I get an Alfa adapter plate from ???
Sorry can't be a 1200 must be a 1300 unless some smart arse had fitted 1300 tp heads to 1200 barrels more likely its is a 1300 with a D stamp as some of these were 1300 despite what you might see on the net.
Engine numbers are not definitive and there are exceptions to every rule.
You can clearly see the twin inlet manifold in the picture of your car from ebay.
as to why it's slow usual stuff to check
engine wear how many miles has it done it's pretty old 1965 40 years old has it been rebuilt piston rings bores valves heads etc. I fyou changing any of this you may aswell go to 1600.
caburation you do need a better carb than a pict if you want it to move it's design for economy
ignition timing points etc
brakes binding
My 1600 tp performs well with two twin barrell carbs electronic ignition, extractor exhaust .
If you are thinking of selling your engine/gearbox give us a shout may have a buyer.
Evening guys.
VW aircooled Engine case prefix's D = 1200 34hp
F= 1300 single port 40hp
AB = 1300 twin port 44hp
AE/AF/AD= 1600 twin port 50hp
H = 1500 single port (best one) 50hp
The cases are essentially the same, so someone may have used a 1200 case with 1300 inards or bigger. (1200 crank is 64mm stroke as opposed to 69mm for the 1300-1600's).
If its getting sluggish, first check the compression. (broken rings or valves not seating are common). If they all check the same then give it a service. new plugs, leads etc, and go from there. Air leaks are also common so go around with the fairy liquid and see if it starts blowing bubbles at you...
If you want more power A bus engine (1500 or 1600) with an extractor exhaust and a single progressive 32-36 weber and it will be good for 65-75hp. Twin carbs will give more but will fall out of tune quicker.
Hope this is useful B)
steve - heres a previous post I did about the alfa engines.........
http://forums.fugitives.co.uk/index.php?showtopic=146I'd reccomend an 8 valve 1.7 good for 115bhp........I will help you do the conversion if you are serious about it. I think the most tricky part will be the exhaust, I'm currently designing a new system for my alfa so will be able to advise, but rest assured it aint rocket science!
