Original Posted By: "Bert Conoly"
Pietheads:I recently bought a used A-65 engine off of Barnstormers. It has been off theairplane for about 6 months because the owner upgraded to a bigger engine - atleast that's what the log book (and the seller) says. The only damage I havefound is a really bent up pushrod tube and pushrod for the intake valve on CylinderNo 3 (thats front, right). I pulled the valve cover and removed the rockerarm and pushrod. It's definitly bent from a side load not a compressionload. The engine turns over fine - no noises - has compression. The pushrod tubelooks like it's been bent with something. I wondered if maybe someone hadtried to pry the intake manifold off of no 3 and wedged a crow bar or somethingbetween the pushrod tube and the manifold and bent the tube.1) Have ya'lll seen this before?2) Do you have to pull the jug to re-insert a tube and press it in or why can'tyou do this with the cylinder on?3) The push rod is definitly bent, too - can it be bent back by hand? and used.I'm not too cheap. Just curious.I've put some pics on my site.Thanks all, Bert (whose about 72 hours from taking two completed wings to the hangarto introduce them to their fuselage)http://bconoly.tripod.com/_____________ ... __________
Pietenpol-List: A-65 question
RE: Pietenpol-List: A-65 question
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Bert,Pushrods need to be perfectly straight. We roll them ona sheet of glass tomake sure. The cylinder will have to be pulled for the pushrod tubechangeout. You would think that you could just loosen the cylinder and pullit part way but with an engine that is old, the oring seal at the cylinderbase will be hard an unable to reseal so cylinder should be pulled. It is agood idea anyway since you can then look at all the lifter faces and camlobes as well as look at the cylinder bore.The engine probably took damage sitting around a shop.Chris-----Original Message-----
Bert,Pushrods need to be perfectly straight. We roll them ona sheet of glass tomake sure. The cylinder will have to be pulled for the pushrod tubechangeout. You would think that you could just loosen the cylinder and pullit part way but with an engine that is old, the oring seal at the cylinderbase will be hard an unable to reseal so cylinder should be pulled. It is agood idea anyway since you can then look at all the lifter faces and camlobes as well as look at the cylinder bore.The engine probably took damage sitting around a shop.Chris-----Original Message-----
Re: Pietenpol-List: A-65 question
Original Posted By: "Christian Bobka"
Thanks, Chris. That's pretty much what I had decided to do anyway.Bert----- Original Message -----
Thanks, Chris. That's pretty much what I had decided to do anyway.Bert----- Original Message -----
Pietenpol-List: A-65 question
Original Posted By: Richard Carden
My newly overhauled engine runs good using a borrowed Stromberg carb. Cranks withone or two props. But when I put MY carburetor (also a Stromberg) on it itwill not run on cylinder number three. I've re-checked the mag timing, compressionis 80/75 to 80/71 on all 4. New exhaust valves. Lapped intake valves.The intake tubes and hoses are new, the valves all close right, all new gaskets.The cylinders were done by an A&P so I do not have an concerns with thecylinders. I actually swapped the offending cylinder 3 with cylinder 1 and theproblem stayed on number 3. I have brand spanking new Slick Mags and new plugs.I would have assumed that a carb problem would have affected all 4 cylinders thesame. Have you guys ever heard of anything like this? I have cleaned the carb(soaked it) and inspected it - I don't see any problems.It makes GREAT power with the borrowed carb and all four cyls get hot as a firecracker.But with my carb, number three stays cold as a clam.I"ve been scratching my head on this one. Who would you all recommend to send the carb to for overhaul?. Bertwww.bconoly.tripod.com________________________________________________________________________________Date: Sun, 23 Nov 2003 20:52:04 -0500
My newly overhauled engine runs good using a borrowed Stromberg carb. Cranks withone or two props. But when I put MY carburetor (also a Stromberg) on it itwill not run on cylinder number three. I've re-checked the mag timing, compressionis 80/75 to 80/71 on all 4. New exhaust valves. Lapped intake valves.The intake tubes and hoses are new, the valves all close right, all new gaskets.The cylinders were done by an A&P so I do not have an concerns with thecylinders. I actually swapped the offending cylinder 3 with cylinder 1 and theproblem stayed on number 3. I have brand spanking new Slick Mags and new plugs.I would have assumed that a carb problem would have affected all 4 cylinders thesame. Have you guys ever heard of anything like this? I have cleaned the carb(soaked it) and inspected it - I don't see any problems.It makes GREAT power with the borrowed carb and all four cyls get hot as a firecracker.But with my carb, number three stays cold as a clam.I"ve been scratching my head on this one. Who would you all recommend to send the carb to for overhaul?. Bertwww.bconoly.tripod.com________________________________________________________________________________Date: Sun, 23 Nov 2003 20:52:04 -0500
Re: Pietenpol-List: A-65 question
Original Posted By: "Bert Conoly"
Bert,Carb doesn't know what cyl it's sending fuel/air to.Doesn't sound like the carb to me.walt evansNX140DL----- Original Message -----
Bert,Carb doesn't know what cyl it's sending fuel/air to.Doesn't sound like the carb to me.walt evansNX140DL----- Original Message -----
Re: Pietenpol-List: Fir lumber source
Original Posted By: "Richard Carden"
It would be helpful to know where you are located. In most ares of thecountry, good quality Douglas fir is available at lumber yards. Finequality tight grain is used for T&G flooring.. Also when looking in bins ofregular 2x4's you willl notice they are designated SPF. That stands forSpruce, Pine, Fir. If you know what you are looking for that is thecheapest place. Fir has a reddish color and has a distintive smell.Dick N.----- Original Message -----
It would be helpful to know where you are located. In most ares of thecountry, good quality Douglas fir is available at lumber yards. Finequality tight grain is used for T&G flooring.. Also when looking in bins ofregular 2x4's you willl notice they are designated SPF. That stands forSpruce, Pine, Fir. If you know what you are looking for that is thecheapest place. Fir has a reddish color and has a distintive smell.Dick N.----- Original Message -----
Pietenpol-List: Fir lumber source
Original Posted By: dave rowe
Re: Pietenpol-List: A-65 question
Original Posted By: "Bert Conoly"
Bert,A light just went on after thinking about this.A friend had a newly overhauled O200 that ran rough and had a cold cylinder.Our Mentor put his finger right on it,,,had one of the cork intake tubegaskets folded and sucking in air.Got a feeling that you have the same thing, but maybe a very small leak.When you use the borrowed carb, and it runs, maybe the idle mixture screw isadjusted very rich so the cyl will still fire even though it's getting someextra air. When you use yours, your mixture could be set on the very leanside so with the extra comming in it's just enough to not fire.If the "bad" carb is still on the engine, richen the idle way up and try itagain. If that's it, look for an intake leak. You should find a bad spotwith a light and one of those small dental mirrors.Let us know.walt evansNX140DL----- Original Message -----
Bert,A light just went on after thinking about this.A friend had a newly overhauled O200 that ran rough and had a cold cylinder.Our Mentor put his finger right on it,,,had one of the cork intake tubegaskets folded and sucking in air.Got a feeling that you have the same thing, but maybe a very small leak.When you use the borrowed carb, and it runs, maybe the idle mixture screw isadjusted very rich so the cyl will still fire even though it's getting someextra air. When you use yours, your mixture could be set on the very leanside so with the extra comming in it's just enough to not fire.If the "bad" carb is still on the engine, richen the idle way up and try itagain. If that's it, look for an intake leak. You should find a bad spotwith a light and one of those small dental mirrors.Let us know.walt evansNX140DL----- Original Message -----
Re: Pietenpol-List: A-65 question
Original Posted By: "Eric Williams"
Subject: Re: Pietenpol-List: A-65 questionBert, Had lunch today with an aviation type and I threw your problem at him. He took a few bites, chewed, sipped a little beer and came up with a possibility.Rare, very rare, but it might be it. He says, " the only way that #3 could be starved other than manifold blockage is for the jet in the center of the venturito have been bent slightly thereby depriving #3 of fuel. Rare but maybe.Corsky in La drinking hot beer on a cold day________________________________________________________________________________
Subject: Re: Pietenpol-List: A-65 questionBert, Had lunch today with an aviation type and I threw your problem at him. He took a few bites, chewed, sipped a little beer and came up with a possibility.Rare, very rare, but it might be it. He says, " the only way that #3 could be starved other than manifold blockage is for the jet in the center of the venturito have been bent slightly thereby depriving #3 of fuel. Rare but maybe.Corsky in La drinking hot beer on a cold day________________________________________________________________________________
Re: Pietenpol-List: A-65 question
Original Posted By: "Bert Conoly"
Hey BertI would highly recommend Bolduc Aviation here in Minneapolis. Of course itsnot cheap they did mine. $500 They do lots of them they are a majoroverhaul facility for engines Their number 763-780-1185Dick----- Original Message -----
Hey BertI would highly recommend Bolduc Aviation here in Minneapolis. Of course itsnot cheap they did mine. $500 They do lots of them they are a majoroverhaul facility for engines Their number 763-780-1185Dick----- Original Message -----
Re: Pietenpol-List: A-65 question
Original Posted By: "Christian Bobka"
Subject: Re: Pietenpol-List: A-65 questionIn a message dated 11/24/03 2:30:08 PM Central Standard Time, Isablcorky(at)aol.com writes:>Bert,A bent needle in your carb, or maybe the carb was threaded crooked. Look straight down the venturi, and see if the needle is in the center. This is thefirst thing I thought of.Chuck G.________________________________________________________________________________
Subject: Re: Pietenpol-List: A-65 questionIn a message dated 11/24/03 2:30:08 PM Central Standard Time, Isablcorky(at)aol.com writes:>Bert,A bent needle in your carb, or maybe the carb was threaded crooked. Look straight down the venturi, and see if the needle is in the center. This is thefirst thing I thought of.Chuck G.________________________________________________________________________________