claire Posted September 13, 2008 Share Posted September 13, 2008 I am looking to buy a rd400 f motor. Have spoken to a guy and he has one for sale but the engine number starts 1a3-66 I dont think this is correct.I thought it should be 1a3-33 What you guys think? Cheers Claire Link to comment Share on other sites More sharing options...
Moderator mervin Posted September 13, 2008 Moderator Share Posted September 13, 2008 I am looking to buy a rd400 f motor. Have spoken to a guy and he has one for sale but the engine number starts 1a3-66 I dont think this is correct.I thought it should be 1a3-33 What you guys think? Cheers Claire Yup your are correct 1A3-66 sounds a bit fishy to me also if you look at the number it should be stamped in a serrated/grooved area not a smooth one if it is smooth the previous number has very likely been filed off Merv Link to comment Share on other sites More sharing options...
claire Posted September 13, 2008 Author Share Posted September 13, 2008 Yup your are correct 1A3-66 sounds a bit fishy to me also if you look at the number it should be stamped in a serrated/grooved area not a smooth one if it is smooth the previous number has very likely been filed off Merv Thanks Merv, Thought so, i think i will wait for another one Thanks again Claire Link to comment Share on other sites More sharing options...
JimR Posted September 13, 2008 Share Posted September 13, 2008 I am looking to buy a rd400 f motor. Have spoken to a guy and he has one for sale but the engine number starts 1a3-66 I dont think this is correct.I thought it should be 1a3-33 What you guys think? Cheers Claire Hi Claire, 1A3 is the modal prefix (in all frame & engine nos of the day) the digits afterwards are the production number so one that starts 66 will be a late one as you state an F ... ( modal code 2R9) if the ignition stator is still on the motor it should be a CDI system. But dont forget that these motors are the best part of 30 yrs old another engine could be 'cattle trucked' (rhyming slang) and the money may be better spent on sorting the original engine. Known bad points :- Lab seal & centre mains E Modal connections to the CDI .. makes um go backwards ... the guy I reversed into on Putney bridge was not impressed ! Fixed on F modal Oil pump cable issue if incorrectly adjusted used to snap causing engine damage at high throttle openings (made loadsa cash out of that one also RD250/350/CS7/R3/R5) Silly rubber joints between front pipe & silencer leaked & cost sheds to replace Regards Jim Mail 4 more info if needed Link to comment Share on other sites More sharing options...
Moderator mervin Posted September 13, 2008 Moderator Share Posted September 13, 2008 Thanks Merv, Thought so, i think i will wait for another one Thanks again Claire where are you in somerset claire ? we aircooledrdclub were thrashing our 400.s up the cheddar gorge back in may there were some piics of the half abandoned easter meet in CMM recently Merv Link to comment Share on other sites More sharing options...
claire Posted September 14, 2008 Author Share Posted September 14, 2008 where are you in somerset claire ? we aircooledrdclub were thrashing our 400.s up the cheddar gorge back in may there were some piics of the half abandoned easter meet in CMM recently Merv Link to comment Share on other sites More sharing options...
claire Posted September 14, 2008 Author Share Posted September 14, 2008 where are you in somerset claire ? we aircooledrdclub were thrashing our 400.s up the cheddar gorge back in may there were some piics of the half abandoned easter meet in CMM recently Merv Not far from cheddar, Wells about 8 miles away. Claire Link to comment Share on other sites More sharing options...
claire Posted September 14, 2008 Author Share Posted September 14, 2008 Hi Claire, 1A3 is the modal prefix (in all frame & engine nos of the day) the digits afterwards are the production number so one that starts 66 will be a late one as you state an F ... ( modal code 2R9) if the ignition stator is still on the motor it should be a CDI system. But dont forget that these motors are the best part of 30 yrs old another engine could be 'cattle trucked' (rhyming slang) and the money may be better spent on sorting the original engine. Known bad points :- Lab seal & centre mains E Modal connections to the CDI .. makes um go backwards ... the guy I reversed into on Putney bridge was not impressed ! Fixed on F modal Oil pump cable issue if incorrectly adjusted used to snap causing engine damage at high throttle openings (made loadsa cash out of that one also RD250/350/CS7/R3/R5) Silly rubber joints between front pipe & silencer leaked & cost sheds to replace Regards Jim Mail 4 more info if needed Link to comment Share on other sites More sharing options...
claire Posted September 14, 2008 Author Share Posted September 14, 2008 Hi Claire, 1A3 is the modal prefix (in all frame & engine nos of the day) the digits afterwards are the production number so one that starts 66 will be a late one as you state an F ... ( modal code 2R9) if the ignition stator is still on the motor it should be a CDI system. But dont forget that these motors are the best part of 30 yrs old another engine could be 'cattle trucked' (rhyming slang) and the money may be better spent on sorting the original engine. Known bad points :- Lab seal & centre mains E Modal connections to the CDI .. makes um go backwards ... the guy I reversed into on Putney bridge was not impressed ! Fixed on F modal Oil pump cable issue if incorrectly adjusted used to snap causing engine damage at high throttle openings (made loadsa cash out of that one also RD250/350/CS7/R3/R5) Silly rubber joints between front pipe & silencer leaked & cost sheds to replace Regards Jim Mail 4 more info if needed Thanks Jim Link to comment Share on other sites More sharing options...
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