IO-240 engine swap for a O-200 ??

[Robert Bradbury]

Re: IO-240 engine swap for a O-200 ??

Rob you have been out a long time. retired in 2004 , moved to Arkansas and found out i had prostate cancer, moved back to California for treatment. Moved back to Arkansas. Had a PSA test ( no, not Pacific Southwest Airlines) 15 months later and the Doc says im going to live. Thats if airplanes and motorcycles don't kill me first!:joy: So im building a hanger for the T and Quicksilver.
There was an interesting writeup by Continental a few years ago using a high time worn out engine with low commpression readings and a new engine. They found that the horsepower was pretty much the same across the board when at rated rpm. Something that i have found to be true in boat racing engines , short of a holed piston or a broken valve. the worn out ones just use more oil and idle rough. AND some of the worn out ones were faster.I made a 65 a 80 a few years ago and i found it was not worth the effort. Of course i depitched the prop to get the required RPM Interesting thing is when we intalled the depiched prop on a well worn stock A65 it seemed to work as well or better than the 80 and used less oil due mostly to the more modern pistons on the A65 i believe. I also helped a man change from a O200 t0 a 320 and that was WOW. NO replacement for Cubic inches. Im betting this is pretty much the way it is short of a totaly dead cyclinder. Hate to see you waste your money for so little in crease in performance,unless your current engine is really Shot.
GO for the Frank and be Happy. No one i know has too much power. Oh OK i had too much once but thats a different story.
Like i Said before , Nice to have you Back

Thanks for the advise Norm and glad you came through o.k.
Still think I will just throw on new cylinders with high compression
pistons, five angle valve job, flow match the cylinders, and port
polish the intake system. This will get me 15-20 extra HP for sure.
I finally talked with someone who has done this and backed up
the results on a dyno. A better profile cam and a proper balanced
exhaust could help a bit more but not worth the small gains for
splitting the engine, or the expence .
I know more displacement would be better, but I haven't the time to
make it all up. If I could have found a firewall forward O-290D2 or 320
I would have gone that way, but I cannot find it out there. I don't have
the time to make the mount,cowling and baffling required. I think 15-20
extra ponies and some clean up of drag will help in a big way .

Robert

[stormman]

Re: IO-240 engine swap for a O-200 ??

Rob you have been out a long time. retired in 2004 , moved to Arkansas and found out i had prostate cancer, moved back to California for treatment. Moved back to Arkansas. Had a PSA test ( no, not Pacific Southwest Airlines) 15 months later and the Doc says im going to live. Thats if airplanes and motorcycles don't kill me first!:joy: So im building a hanger for the T and Quicksilver.
There was an interesting writeup by Continental a few years ago using a high time worn out engine with low commpression readings and a new engine. They found that the horsepower was pretty much the same across the board when at rated rpm. Something that i have found to be true in boat racing engines , short of a holed piston or a broken valve. the worn out ones just use more oil and idle rough. AND some of the worn out ones were faster.I made a 65 a 80 a few years ago and i found it was not worth the effort. Of course i depitched the prop to get the required RPM Interesting thing is when we intalled the depiched prop on a well worn stock A65 it seemed to work as well or better than the 80 and used less oil due mostly to the more modern pistons on the A65 i believe. I also helped a man change from a O200 t0 a 320 and that was WOW. NO replacement for Cubic inches. Im betting this is pretty much the way it is short of a totaly dead cyclinder. Hate to see you waste your money for so little in crease in performance,unless your current engine is really Shot.
GO for the Frank and be Happy. No one i know has too much power. Oh OK i had too much once but thats a different story.
Like i Said before , Nice to have you Back

[Robert Bradbury]

Re: IO-240 engine swap for a O-200 ??

Welcome back Robert

Thanks Norm, I'm trying to get a backlog of stuff cleaned up.
I'm needing some more power for my T on 1650 floats and was looking
at a few options. Anyway, I've decided just to plug in some brand new
cylinders and high compression pistons on my exsisting engine and try that
first. I'm thinking a boost of 15-20 HP just might do the trick along with some
drag reduction. We'll see next spring.

I thought you were in CA or have I just been out of the loop too long?

Robert

[stormman]

Re: IO-240 engine swap for a O-200 ??

Welcome back Robert

[Robert Bradbury]

Re: IO-240 engine swap for a O-200 ??

G Lucas talking to R Bradbury. Should we be expecting a REALLY good movie about this soon?
HAnk (;f

Yes, comming soon to a theatre near you....................

" The Tcraft Trilogy's "


R Bradbury

[Hank Jarrett]

Re: IO-240 engine swap for a O-200 ??

G Lucas talking to R Bradbury. Should we be expecting a REALLY good movie about this soon?
HAnk (;f

[Robert Bradbury]

Re: IO-240 engine swap for a O-200 ??

405-268-3925, tell him I sent you, just had lunch with him earlier today

Mike

Thanks for the number, but I had already found him on the net from a search.
Quite a knowledgeable person but a little too expensive for the work I need
done. I've decided to just buy four new cylinders c/w high compression pistons and rings and see where that gets me. I expect it will net me about 10to 15 hp and I won't have to remove the engine. It is the cheapest and easiest route I can think of for now. Cleaning up some drag and a waxing
should also help the cruise speed. Anyway, lots of time as the plane is in the
hanger until spring .

Robert

[Ragwing nut]

Re: IO-240 engine swap for a O-200 ??

You wouldn't have a number for Greg Lucas would you?

Robert

405-268-3925, tell him I sent you, just had lunch with him earlier today

Mike

[Robert Bradbury]

Re: IO-240 engine swap for a O-200 ??

As far as I know they are not back in production yet with the engines. they do show up on barnstormers every couple months or so reasonably priced. If you need one worked on I would only send it to Greg Lucas in Pauls Valley OK. He is the best there is now on Franklins and has all the connection for parts.

Mike

You wouldn't have a number for Greg Lucas would you?

Robert

[Ragwing nut]

Re: IO-240 engine swap for a O-200 ??

As far as I know they are not back in production yet with the engines. they do show up on barnstormers every couple months or so reasonably priced. If you need one worked on I would only send it to Greg Lucas in Pauls Valley OK. He is the best there is now on Franklins and has all the connection for parts.

Mike

[Robert Bradbury]

Re: IO-240 engine swap for a O-200 ??

No I am not confused. IO-240 is fuel injected and has a modified up induction off an IO-360 Continental and stands about 3-4" taller than a stock O-200 due to the throttle body and induction pipes. The O-240 has a completely different induction system and I have a buddy installing one of those on a PA-11 now. I would consider one of the new 120hp Franklins if you can find one. Direct replacement for Cessna 150 engines under the stock cowl.

Mike

Excellent , I didn't know that the Franklin was a bolt in replacement and reasonably priced too. Now if they would only answer the phone so I could ask some more questions about their 125 hp engine .

Robert

[Robert Bradbury]

Re: IO-240 engine swap for a O-200 ??

Robert,

You should check out Don's Dream Machines. You can find them on the web at http://www.donsdreammachines.com

They have STC's for converting an 85 into an O-200. They also do high performance work for experimentals.

Thanks for the tip, Don is a very knowledgeable guy, he was a big help .

Robert

[Ragwing nut]

Re: IO-240 engine swap for a O-200 ??

O.K. which is it ? Can or can't I get that IO-240 uder the cowl ??
Just kidding, you just seemed to be a little unsure in your comments.

I am experimental so whatever goes in there is legal for me. I was thinking
O-290 D2 but that is a whole lot of work with motor mount, cowling and the
extra weight to offset. Now I'm thinking I may just have the C90 reworked to make 125Hp with some of the common mods. It seems to be working for others and the thing is, their is little extra work involved.............Bonus!!

Robert

No I am not confused. IO-240 is fuel injected and has a modified up induction off an IO-360 Continental and stands about 3-4" taller than a stock O-200 due to the throttle body and induction pipes. The O-240 has a completely different induction system and I have a buddy installing one of those on a PA-11 now. I would consider one of the new 120hp Franklins if you can find one. Direct replacement for Cessna 150 engines under the stock cowl.

Mike

[Bob Waldron]

Re: IO-240 engine swap for a O-200 ??

Robert,

You should check out Don's Dream Machines. You can find them on the web at http://www.donsdreammachines.com

They have STC's for converting an 85 into an O-200. They also do high performance work for experimentals.

[Robert Bradbury]

Re: IO-240 engine swap for a O-200 ??

No way you can get an IO-240 under the cowl. However you might be able to get an O-240 under there. Are we talking a legal install or experimental?

Mike

O.K. which is it ? Can or can't I get that IO-240 uder the cowl ??
Just kidding, you just seemed to be a little unsure in your comments.

I am experimental so whatever goes in there is legal for me. I was thinking
O-290 D2 but that is a whole lot of work with motor mount, cowling and the
extra weight to offset. Now I'm thinking I may just have the C90 reworked to make 125Hp with some of the common mods. It seems to be working for others and the thing is, their is little extra work involved.............Bonus!!

Robert