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#1
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336 Tcds?
I find this thread interesting. So when I look at the tcds for 336 and the 337 they're several different engines approved for the 337, in regards to the 336, it only says IO-360-A , which has a listed tbo of 1500. Is there no variation of the IO 360-A that has similar improvements ie; increased TBO etc? Do any of the gurus on this website know of an stc or FORM 337 that has been accomplished on the 336?
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#2
03-09-15, 10:12 PM
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the 336 was only made one year and I don't think anyone was going to spend any money for mods on a very limited supply of airframes. 1500 hour TBO is pretty much the norm for Skymasters but you can achieve a lot more hours at Part 91 so no worries with that engine
__________________
Herb R Harney 1968 337C Flying the same Skymaster for 47 years
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#3
03-10-15, 08:11 PM
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Hi Herb
My front engine is a factory io-360g reman from 1983 with 550hrs, it was still running strong when I purchased the project. Recently we decided to conduct a bulk strip, the flange serial number indicateded a VAR crank but we remained unsure until some cylinders were removed. The engine will have the required inspection / test carried out, new bearings and all mandatory parts replaced. We also found some lifters just starting to show signs of wear as well as some gears. Besides one intake valve and two exhaust valves cylinder still show hone marks, so we will hone, install new rings as well as check all valve guides and reseat valves. Fuel system o/h "ouch", 500 hourly on the mags as well as checking all other accessories. By doing this we will be able to bring the engine back into calendar time, more importantly we will now know what I have sitting in the front. I did get a price on exchanging a non VAR late last year for a VAR just in case. It was $5,800 USD. Now that is just the front, rear is original engine with 1950hrs TT. Looking at all options for this one, mid time, a reman or o/h. TCM have provided a number of options to consider, they have been very easy to deal with. Just thought I would share my journey with the group. Dave Last edited by SkyMac : 03-10-15 at 08:14 PM.
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#4
03-27-15, 11:19 AM
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Also getting a Factory Reman (rear eng.) direct from Continental.
Attached pictures of the engine mount (ready to be sent out for NDT) and the rear firewall. I have Gamis but will likely run the factory injectors for break-in/cylinder conditioning x at least 25 hours in case there are any problems.
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#5
03-27-15, 01:58 PM
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What kind of NDI, x-Ray?
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#6
03-27-15, 07:53 PM
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Quote:
__________________
Herb R Harney 1968 337C Flying the same Skymaster for 47 years
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#7
03-27-15, 09:30 PM
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Herb that could happen but also concerned with if there is a generic issue with the engine under warranty I don't want any pushback if we started with the gami's. First 25 hours crucial for cylinder conditioning and I wanted to do it with their injectors.
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#8
03-27-15, 09:44 PM
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Likely a good idea to use the factory injectors for break in but I do have another thought.
I don't have GAMI injectors but aren't GAMI's designed for one single engine? I thought when purchasing GAMI's injectors that you send them a bunch of data (EGT's, "GAMI spread", etc.) and then they try to send you injectors to "balance" (for lack of a better term) the cylinders. It may work the first time, may not, but they keep tweaking until they get it right. Pulling the same set of injectors off your old engine and putting them on the new one doesn't sound like the correct action to me. Opinions..?.?.?.... I'm thinking new data will need to be sent to GAMI and a new set of injectors built and installed. I suppose luck could make the old ones correct but for that matter, the factory injectors could get lucky and be perfect as well. Wondering...... Ed Asmus
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