A netter asked about why the batteries explode: generally in the auto world my experience has been that the times they have exploded on me, and there have been several, is the battery generally is either shorted internally, and ignites the charging gases, or vapors get trapped and some other catalyst ignites the vapors. Not to say that this is always the case, but all of them that I have seen have been older batteries in rough shape/not taken care of. Serge, even though your engine gets most of its cooling from the oil system, if your baffles are not in the proper position, then your temp is going to sky rocket. The engine needs all of its means of cooling, oil, airflow, and exhaust. Any of those not configured properly will lead to higher than normal temps. Colin Rainey KR2(td) crain...@cfl.rr.com Sanford, Florida FLY SAFE!!!!