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Car Forum / Volkswagen / Air Cooled Volkswagen Cars / May 2008Twin/Single port differences. 1300cc ok for tuning?
Hi there, I have been offered a running 1300 twin port engine for about £30 with merged headers. I want to learn more about an engine before I buy a pre 67 beetle next year so I thought this would be good to play with. Questions: 1. I think I understand the differences between twin port and single port, but what are the advantages (if any?) 2. Whilst this engine will just be used for playing with, could the head's etc ever be used to take 1641 pistons etc? Or should any >100hp tuning just be done with an original 1600cc engine as a base. 3. I am told that it is from a 1972 engine and has a 4branch preheat (off an AD engine code) engine. What does this mean? Does he mean 'AB' engine code? 4. I am told that an engine can simply be started when out of the car just by sitting on the heater channels on the floor. Is this true? Thanks in advance > Hi there, I have been offered a running 1300 twin port engine for > about £30 with merged headers. Buy it. I want to learn more about an engine > before I buy a pre 67 beetle next year so I thought this would be good > to play with. [quoted text clipped - 3 lines] > 1. I think I understand the differences between twin port and single > port, but what are the advantages (if any?) Twin port, one intake port for each cylinder, breathes easier(better). > 2. Whilst this engine will just be used for playing with, could the > head's etc ever be used to take 1641 pistons etc? Cant remember, but thinks the register of the 1300 heads need to be machined to fit 1600 cylinders. Or should any >> 100hp tuning just be done with an original 1600cc engine as a base. I saw this comment from Jan regarding output of a T1 engine, let me assure you it takes more than a set of 1641 cylinders to make 100Hp. > 3. I am told that it is from a 1972 engine and has a 4branch preheat > (off an AD engine code) engine. What does this mean? Does he mean > 'AB' engine code? AD 1600cc T1 engine from a Type2(Transporter). > 4. I am told that an engine can simply be started when out of the car > just by sitting on the heater channels on the floor. Is this true? If you have a piece of the tranny you can bolt to the engine supporting the starter yes(or purpose built adapter). J. > Thanks in advance  SignatureUsing Opera's revolutionary e-mail client: http://www.opera.com/mail/ Is this some sort of joke? > Hi there, I have been offered a running 1300 twin port engine for > about £30 with merged headers. I want to learn more about an engine [quoted text clipped - 19 lines] > > Thanks in advance > Is this some sort of joke? What do you mean? Buying a running engine for £30 to strip it/tinker/ learn about it? Wanting to know if it's a reasonable base for any kind of tuning up to 100bhp (yes, I am aware that new pistons won't bring it up to 100bhp ;-)? Or wanting to know if the engine can be run outside the car just sitting on the heater channels? >> Is this some sort of joke? > [quoted text clipped - 3 lines] > bring it up to 100bhp ;-)? Or wanting to know if the engine can be > run outside the car just sitting on the heater channels? I was also wondering about that comment.. J. SignatureUsing Opera's revolutionary e-mail client: http://www.opera.com/mail/ Maybe the guy has not heard of 1300cc dual port VW motors. As I recall, they were used in industrial applications such as wind tunnels, etc. However, don't the 1300 cases lack replacable bearings for the camshaft, etc? I would think buying it for $65 and reselling it on SAMBA would be a good deal.... then getting some old 1600 to hop up... but then, maybe 1300s are plentiful in the UK. KWW >>> Is this some sort of joke? >> [quoted text clipped - 7 lines] > > J. The 1300 dual port engines, where widely sold in Europe. They are the same engine as the 1600 dual port, but with smaller pistons and heads. To build a 70-80bhp engine out of it, you will need new pistons / cylinders (up to 1641 will fit to the case without machining) and new heads. You will also need dual carbs and a more aggressive cam profile than stock and full flow oil filtration. But don't expect it to last long. Pistons and crank will most likely not be reusable to a new project when this engine fails, but the carbs / exhaust, full flow oil adapter, and maybe the cam if you are lucky will be reusable. To get 100bhp out of a 1600 engine, it must be very well designed and assembled with high quality expensive parts without cutting any corners. An old used case, doesn't fit there. Bill Spiliotopoulos, '67 Bug. > Maybe the guy has not heard of 1300cc dual port VW motors. As I recall, > they were used in industrial applications such as wind tunnels, etc. [quoted text clipped - 16 lines] >> >> J. Heater channels are inside of your vehicle. Heat exchangers / boxes are attatched to your engine. > > Is this some sort of joke? > [quoted text clipped - 3 lines] > bring it up to 100bhp ;-)? Or wanting to know if the engine can be > run outside the car just sitting on the heater channels?
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