PhilMorrison Posted May 20, 2008 Share Posted May 20, 2008 ACL list the mains as the same part number, and a slightly different partnumber for the con rod bearings. The sizes, and crank details are listed as identical, so I can't understand why there would be difference. I'm replacing the crank in my TT engine with an NA GS300 crank, so could do with knowing. Quote Link to comment Share on other sites More sharing options...
Scooter Posted May 20, 2008 Share Posted May 20, 2008 i 'think' it maybe a oil way/hole difference between the NA and TT........in fact reading the manual it shows the flow diagram for the oil as passing through "Piston internal oil galleries" on the TT engine. So i think you need to pick the part number dependant on the piston type. Bit late now but i should be able to compare TT and NA bearings tomorrow evening to see 100%....... Quote Link to comment Share on other sites More sharing options...
PhilMorrison Posted May 20, 2008 Author Share Posted May 20, 2008 Thanks for the reply I've got NA and TT bearings in the workshop and could see no difference by eye. My first thought was the size of the holes, but they 'look' the same. Quote Link to comment Share on other sites More sharing options...
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