Hi Ian,
Nice to see your positive comments re Limbach ... I recon they are a great little engine if they are looked after. The L2400 we put in the Grob 109 has been performing brilliantly with absolutely no problems. Now has a few hundred hrs. It is also impressive that it powered a Stemme S10 from England to New Zealand. There were a few problems, but nothing which reflected on the engine itself (a plug came out in Cyprus .... incorrect torque). Finally have the little Dimona engine running here. (That specific engine's first run since 1982) We have spent a LOT of time getting the cooling as best as we can. (the TFB baffle approach .... tight as a fish's bum) There is a lot of info re Limbach SB's on the Fournier web site which we used. I have found the other Dimona I look after over here does run cool. Maybe old Wolf Hoffman knew a lot about engine cooling. We did struggle a bit with the L2400 in the Grob 109 to get all in the green ... with success .. havn't had to adjust the tappets in 250 hrs. The original L2000 Grob installation was a real shocker(just prior to the L2400 installation) ... over the years and various maintenance engineers, the overall baffle standard was pathetic. The little engine just cooked itself to death. The Limbach shells are really important. Best regards Ian W. From: [email protected] [mailto:[email protected]] On Behalf Of Ian Mc Phee Sent: Friday, 9 August 2013 10:10 a.m. To: DOG LIST Subject: [DOG mailing list] L2000 heads For about past 400 hours I have checked tappet gap with.0.2mm and never adjusted gaps but yesterday I tried 0.25mm feeler gauge and noticed it would just fit in many of the gaps. Naturally I readjusted them all back to 0.2mm My question is in past I have always noticed gap closing up especially exhaust but never seen all gaps opening up. The local VW man George always says clacky tappets are happy tappets. Has anybody out there got an idea what is happening? This engine runs very cool and oil only just gets to 75degC (the min). It has reached the stage I am now fully blocking off air to cooler to get temp up and am using 10W40! I even bought new oil temp gauge and probe and still the same very low temp, while pressure is always close to 4atm. It never needs a top up in 50hrs. Any thoughts out there. The only failure in 500hr was a tappet cover cork had a crack and put in new plugs at 500 has for something to do (Limbach 3 probe plug). Limbach are great engines & I reckon the TBO should be upped to 1600hrs like L2400 or whynot 1200hrs like L1700 at a minimum. Come on Limbach do your paperwork. Ian Mcphee
