posted
Hello Is it common for the RB Speedline Matrix 12 for the cooling fins to break off? The first one broke off around two race meetings ago it broke off the forth cooling fin from the bottom. Tonight while I was doing my maintenance on my car I noticed that it had broken another cooling fin fifth one up from the bottom. I have had no major accidents on the track. I’m very particular on doing my maintenance on all my cars after every race meeting. In my collection I have a RB C6BB & RB C6BT and I have never had a problem with these engines. I do relies that they are different in size and build. But I would not think that the RB Speedline Matrix 12 would have a problem. If anybody could help on this that would be great. Or should I be doing something special to this motor? I’m about to buy another RB 12 may be a new model R3 but does this model have the same problem? Just would like to know why this is happening. At our club there is a few guy’s that have had the same problem with the Matrix 12 cooling fins.
Thank you very much for your help & knowledge
Posts: 11 | From: Australia | Registered: May 2007
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posted
That the cooling head fins are breaking off can be due to excessive vibrations. The vibrations appear in general when there is some tension on the crankcase of the engine.
Have you checked with the SpeedLine Matrix engine if the engine mounts are mounted correctly on the engine(without tension) since the holes of fixation are closer to the crankcase then the other engines, so it could be possible you need to modify a little the engine mounts to solve this. Also check of the engine mounts are without tension mounted on the chassis and if the crankcase of the engine is not toutching the chassis.
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