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Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Wed Jan 15, 2014 2:19 pm
by ericheath
Whisker??? You were just asking about classes for self-control..... and then then you -just- dove -right ------in. Hah. Kidding. Good explanation of the points of view of the many. It's just too bad real info couldn't be gotten via Dyno's, but they're money than many of the bikes here cost. I'm with Brutusmaximustrashus, I like to read and see what others mess with, and I will likely jump in and try for myself. I'm due to blow up one of mine.
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Wed Jan 15, 2014 3:05 pm
by gregforesi
See. Now that's what I'm talking about. Damn the torpedos and full speed ahead. If it blows, well, stuff happens.
Here you go Eric, my choice for a carb - the little Holley dual pumper. With a velocity stack sticking about 4" out the top of the shelter it will be a beautiful thing.
Holley 450.jpg
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Wed Jan 15, 2014 3:38 pm
by Whiskerfish
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Wed Jan 15, 2014 4:36 pm
by rcmatt007
I recall a bumper sticker I saw the other day "you laugh because I am different.... I laugh because you are all the same"
of course, in the resident call room, we have screen savers that are "de-motivational posters"
"Madness does not always howl at the moon. Sometimes it is the quiet voice at the end of the day saying, "Hey, is there room in your head for one more?"
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Thu Jan 16, 2014 9:25 am
by gregforesi
"...you did it for yourself and shared the what you learned objectively."
Sliced bread? I had no idea if the oven even worked. Going into it - the only thing I knew for sure was that IF I could pull it off it was going to look pretty darn cool. And it did. The setup ran decent too.
The #1 most important part was that I learned stuff. I'm not a young man anymore. Continuing education is important even if the subject matter is fairly useless (as in this case). The only real issue I had with it over about 1000 miles was that the #4 carb idle jet would plug up. Left over corrosion breaking loose I think.
I can go off on a lengthy discussion on my feelings about the single carb thing but it's just opinions. They've been made to work quite well according to the owners. Before and after dyno numbers would be really cool. I'm sure they would do nothing to change anyone's mind but it would be interesting stuff.
I can't find the photo of the forward facing single carb setup but here's dual vertical singles somebody came up with. They polished some bits too. I like it.

Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Thu Jan 16, 2014 9:50 am
by ericheath
[quote="gregforesi"][quote]"...you did it for yourself and shared the what you learned.
#1 most important part was that I learned stuff. I'm not a young man anymore. Continuing education is important even if the subject matter is fairly useless (as in this case).
I'm in that camp too. We have to take care of ourselves physically, but mentally is important, and to me, it's one area I can still triumph over the young bucks. I am getting towards that "elder" status, but I still have elders and I appreciate what they have to say.
Mr Foresi's comment above deserves framing and being hung on the wall!
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Thu Jan 16, 2014 9:56 am
by gregforesi
Well that's different. Usually they want to hang me on the tree just beyond the wall.
Thanks Eric.
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Thu Jan 16, 2014 12:49 pm
by rcmatt007
one of the churches I served as a pastor had a sign.... this spot reserved for the hanging of the next pastor!
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Thu Jan 16, 2014 2:54 pm
by ericheath
Glad to see you made it. You have kind of a long neck though.
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Thu Jan 16, 2014 8:58 pm
by 82aspy
gregforesi wrote:
My own "spin them suckers around" was pretty weird, but my first place has to go to the twin solexs facing forwards. I can't remember who did that but it had a pretty high bizarre factor going for it. Very steam punk.
maybe ths pix
https://www.facebook.com/photo.php?fbid ... =1&theater
bet there'd be ram air possibilities lol to play with
bit of trivia
http://www.mooneypilots.com/mapalog/m20e.html
I would like to make a comment from a technical standpoint about the ram air system on the E model. Mooney's marketing department made a big deal about the ram air system back in the '60's--a "poor man's turbocharger" and all that stuff. Talked about how it was a stroke of design genius to offer this primary induction system bypass to give added engine power and better airplane performance when flying in clean air.
Bull. There is no way a properly designed primary induction air system should have a 1" hg manifold pressure drop across the filter. I think the ram air system on the E model was simply a bandaid for a poorly designed primary (filtered) system. If Mooney's powerplant engineers had designed the primary induction air system properly in the first place, they wouldn't have had to incorporate this "ram air" idea. It's bad engineering to require the pilot to open an induction air bypass to get the engine performance he deserves in the first place. And unfiltered air is not good for the engine.
A good primary induction air system shouldn't have a 1" hg manifold pressure drop across the filter. For example, the later J models had about a .25" hg drop. That's why the factory dropped the "ram air" system on that airplane in later years--it wasn't worth anything. So, shame on Mooney's powerplant engineers in the '60's for designing a primary (filtered) induction air system on the E model with a 1" hg manifold pressure drop and requiring pilots to select unfiltered air for proper engine performance. Bad engineering. Bad marketing.
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Thu Jan 16, 2014 9:10 pm
by the chef
I got the solex pict 34, it does not like to idle, now I wish I'd tried this one.
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Fri Jan 17, 2014 5:31 am
by 82aspy
bottom line for me is after a few years and before this thread showed up, i'd lost interest in scc from available info,
it also appears that a very well sorted ~ new and suitable carb has come to the fore, or been identified with plenty of current info
given the low money involved for the diy folks, i'm definitely going there
i also found alot of humor and enthusiasm in the presentation/experience,
i haven't seen any better current info on the topic, than in these threads
lotsa stuff that is out there for the pro original folks all of a sudden seems dated, nevertheless, lotsa good solid info there too
a view from 2 years in
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Fri Jan 17, 2014 12:00 pm
by rcmatt007
I do recall there being some adds in the MC mags back about 1978, but never had actually seen any in use until I saw HOTT's bike a couple of years ago. Just never really caught on back then, and then, of course, the 1000's were traded up to 1100's, then 1200's and then the 6 jug bikes. What always surprised me is that honda played with fuel injection once on the 1200's and then carbed the whole 1500 series. My fuel injected/electronic ignition HD has far more power and better mpg than my 1000
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Fri Jan 17, 2014 12:03 pm
by CYBORG
Might have been a money issue. FI can add a bit of money to the production costs, and then the retail price
Re: Single Carb Conversion 2 Barrel Progressive, Runs Excell
Posted: Fri Jan 17, 2014 12:23 pm
by Whiskerfish
rcmatt007 wrote:I do recall there being some adds in the MC mags back about 1978, but never had actually seen any in use until I saw HOTT's bike a couple of years ago. Just never really caught on back then, and then, of course, the 1000's were traded up to 1100's, then 1200's and then the 6 jug bikes. What always surprised me is that honda played with fuel injection once on the 1200's and then carbed the whole 1500 series. My fuel injected/electronic ignition HD has far more power and better mpg than my 1000
The GL1800 is injected right? 1500 had twin carbs IIRC. Comparing the HD against the 35 year old wing is apples and oranges. My buddy has a dressed HD (Electronic and Injected) from the last year before the 6 speed box and increased displacement and I can do a side by side high speed roll on with him, but as for MPG he spanks the Wing. He is consistently in the low 50 mpg area. His is 5 or 6 years old I think. HD has responded slowly in some regards but when they do finally decide to upgrade they do it right.