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Thanks for the info. Todd that may be the way to go, I'm concerned about everything lineing up after that much metal is removed. David
On August 23, 2019 at 1:38 PM "Todd Bartrim bartrim@gmail.com" <flyrotary@lancaironline.net> wrote:
Hi David; Sorry to hear about your engine failure, but as I'm sure you've already deduced, far better to happen at home than at OSH. I'm not sure you're interested in cross border services, but Adam at RX7 Specialties in Calgary, Alberta is very helpful. Last time I had my engine apart I called him to enquire about having the irons lapped. He could do it but for a few bucks more he just sold me some irons that he had that were already lapped and in better overall condition than mine. Due to not having to pay to ship my old ones to him, it was actually a little cheaper and much faster. And for you the dollar is worth more up here, so that should offset the cost of shipping from up here. But if you choose to send your irons up here, do not ever use UPS. Any of the other couriers are fine, but UPS has very expensive brokerage fees, that are nothing short of piracy.
Todd (when I get mad about shipping costs and exchange rates, I think about the boys down under and then I don't feel so bad) Am in need of info., where to send my irons ( all three), to be lapped or resurfaced, (or purchase some replacements) this is a 13B so the coolant seal grooves are in the irons. I am in Lansing Michigan for distance reference. This was supposed to be a "professional" built eng. w/aviation mods. the mods are ok, but the wear in the irons in the combustion area looks more like MANY hrs. of use. I only put 80 hrs. on the hobbs. 20 was ground testing the rest in the air. Temps ran 190F coolant, 202F oil, pretty regular. Lubrication was 1oz. 2cyc.oil and 1/2 oz. MMOil for every gal. fuel. On prep for Osh. trip the next day, wanted some T&G's, runup normal very strong could not hold back with brakes, aprox. 90% throttle about foot off runway started missing, set back down and at turn off to taxiway eng. quit running, had to lean EC2 all the way to left to get started again. Checked EM2 bar graph, all in center so not fuel MAP scramble. Thinking SAG (never experienced before so don't know the symptoms) changed plugs, no joy, tested coils, all ok, checked comp. no needle jump on 2 chambers, dissassem. found broken chunk from Apex seal rotor #2. Done crying now need to fix (short summer). David R. Cook RV6A Rotary Lansing MI
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