You may like the Avidyne product more than the Garmin

I did the swap of my 430W to the IFD440 and am very pleased with my choice.  It is a step up in many ways.  It was fast, easy to understand and inexpensive.

I have two that were  removed when I replaced the wing tips.  Let me know if you are still interested.  I have a 79 Q model so they are the same as you have, 24 Volts.

Otto

keep a record of the measured gallons as indicated in the mvp50, and then at elach fill up.  There is a formula to adjust the K value of the fuel flow meter.   This will help you to calculate the K factor just once.  I was doing it every tank fill up and the variation of the fill up was too much.  Just a way of averaging everything.

This is the first electronic engine management system I have ever had.  That aside I very much enjoy it and find it very informative and easy to use.  I have no regrets, and every time I have called to ask a question they are knowledgeable, and pleasant.

I would start keeping a record for the first 10 so tanks of fuel to calibrate your fuel f…[Read more]

The pressure variation quit when I changed the oil.  My A&P thought that a particle got cought in the pressure relief  valve, so no problems since then.

Sorry I did not follow up with this close out.  Also, I am going to increase the time between updates of the fuel flow.  My flow rate has been jumping around since I had it put in, and I was tol…[Read more]

My plane did not have any valve on my vent lines.  I have a 79 that has two vent lines and the first year that did not have bladders.  That may be it different then yours.

It makes sense to me that you have a bend in the vent line higher then the top of the tank would reduce the spilling out the vent line.

MacFarlin has a vent tube that has a upward bend in the wing that should reduce or eliminate the full tank leaking.  I replace both sides on my 182 that greatly reduced the leaks.  the only time it leaks now is if the plane is tilted to one side.  They were simple to change.  I did not like the leaking after I parked it in the hanger.

good flying

Otto

Do you still have the set?  Can you share a picture(s)? I have an interest.

Otto

I would suggest that you purchase a plane that has been zinc chromate from the factory.  This way you know that all the parts are treated.

Michael

I suggest the best benefit of the electronic ignition is the smoother operation in LOP.  It has a advance timing with increase altitude function that really helps.  I have been smooth at 8,000 ft. and 75 LOP, you can’t do that with regular mags.  I also pull the carburetor heat out 1/3 out to add some heat, and back the throttle back 1/…[Read more]

I have 850 hours on mine now.  It has the Hartzall 3 blade prop now  I put in the MVP-50 at the same time.

The engine took 25 or so to brake in.  I changed oil at 2 hours to remove the first oil.  I then changed it again at the next 10 hours.  I ran the engine up to CHT of 400 or so for the first 12 hours and the temp dropped over the next few…[Read more]

Ralph

I have had the PPONK engine now for 800+ hours in my plane.  I replaced the original engine with this engine.  The cost upgrade was about $2000 more, however I had some additional things like flow balanced cylinders.

The cost increase for the added power was the lowest cost HP I have found.  I operate LOP, 180 hours per year, and most fl…[Read more]

Tom

You have to remove the carburetor and adapt the vacuum hose to the pressure side.  Make sure you have the shop vac clean.

I would have him check the intake for leaks on the cylinders.  I have heard that you can pressure the intake manifold with a shop vacuum.  Then soap up the joints to see if you have a leak.

I have a baffle between cylinders that was giving me a big leak by not seating against the case.  It this issue it is two adjacent cylinders.

Happy Hunting,

Otto

Ralph

I recall that it was about the 32-36 range by the time I was done with the engine options.  I did put my present starter and drive along with the mags on the new engine since they were recent replacements.  I also flow matched the cylinders, and had the heavy duty oil cooler put on.  This was a replacement overhaul that they shipped to me…[Read more]

I have owned my 79 q model for 7 years.  I have had the annuals done for 1200-1500 per year.  I purchased mine knowing I would need to put the engine in.  The new one is a PPONK engine along with the EI MVP-50 engine monitor.  I also upgraded the panel with aspens, and new transponder.  This was the first year for the 24 volt electrical.

I put…[Read more]

I have the PPONK engine and have been very happy with it.  I would have the cylinders flow balanced and would add the electronic ignition.

As to the engine.  the PPONK guys have the pricing based on you having an engine traded in.  I had them do one for me and then I sent mine in after the change.  It has purred like a kitten in flight and tig…[Read more]

I have had the 345 for 2 years now and never had a problem.  I do plan on getting the update and explore the possibility of the new IFD slide in.  I have heard some good things about those.