1904......Michael THANK YOU

71mtnscout

71mtnscout

Member
Got the carb today michael and couldnt wait to put it on!! I can tell you one thing.....you are a carb guru!! the goat runs fan-f@#king-tastic!!! What a difference, it idles smoothly, revs evenly, and will even climb a hill now. I even got it good and hot driving around the mountain so the piston slap was almost gone.

All thats left now is to change the springs for some lift, new bushings on the springs and body, clean up some wiring, and some little odds and ends!

Thank you again, and I would like to know what was wrong with the 1904 that I am sending back.
 
I chased down my rural mail carrier and went to the p.o. Today looking for that return! No wonder I couldn't find it...what happened at yore end, them p.o. Folks afraid of that term..."going postal" and herd us talkin' about 'em???

Always good to get feedback on these mixers. Another ihon customer bought the last 1904 we had on the shelf down there in the shop and installed it over the weekend also on his nice s80 parked at his place just outsidea jellystone park...his comments were the same when I talked to him this morning!

And two more will ship out tomorrow if the weather clears a bit so I can test 'em. Both of those are for 144 Ford sixbangers. And I'm getting many calls and inquiries off several Ford forum sites that are being referred regarding the 1904.

Another batch of 1904 main wells are going down to Robert tomorrow so he can do his majik on 'em, having the accelerator pump shot set up right (with the right parts) and having a functional main well is the key to these mixers playing nice!

Thanks again for choosing ihon for your parts needs!
 
michael mayben said:
I chased down my rural mail carrier and went to the p.o. Today looking for that return! No wonder I couldn't find it...what happened at yore end, them p.o. Folks afraid of that term..."going postal" and herd us talkin' about 'em???
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Dont know how it happened................but I have ordered from ihon before so I guess the "box 553" was added on the shipping label, so the po dolts caught it and tagged my po box!

michael mayben said:
always good to get feedback on these mixers. Another ihon customer bought the last 1904 we had on the shelf down there in the shop and installed it over the weekend also on his nice s80 parked at his place just outsidea jellystone park...his comments were the same when I talked to him this morning!
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Will be drivin it to work tomorrow and see how she does.
 
Michael, just a public follow-up, great job on the rebuild. The old Scout runs like a top. It's amazeing what a good carb will do.

Thanks,
jon
 
loneviper said:
michael, just a public follow-up, great job on the rebuild. The old Scout runs like a top. It's amazeing what a good carb will do.

Thanks,
jon
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Guess you could tell that you are our "jellystone park" customer jon!

The oem main jet in the 1904 for the 152 application is #62. That is what is in the carb you received off the shelf from ihon.

I jetted the mixer for chuck at #60 to compensate for altitude (approximate 6,000ft.). If you think that would improve your operation at all, I'll certainly be glad to send you a #60 along with the two pieces for the "angle of attack" mod we discussed on the phone. Once you are back at your place and have time to mess with it, the changes could be made easily without removing the carb from the manifold.

Let's see what chuck thinks after driving the rig down to the flatlands regarding the jetting in his...#60 May not be best but we'll keep working this until we know based upon both of ya operating at about the same relative elevation.

Robert has extensive experience in road-rides with his s80/152 back and forth between lalaland and mammoth, and I have no idea what main jet he runs or if he swaps jets at some point. The ride up and down us 395 varies in elevation from 4,000>7,000ft. Nominal once he leaves the la basin.
 
I drove the Scout from 5280 at our cabin up to about 7000 and couldn't really tell any differance. Plane and simple it ran good. I do have plans to make a run up to the spring, I'll see how it runs as it's pretty steep in spots. As we discussed, it would starve for fuel at times.

I looked at my second carb and will get in the mail as soon as I get a chance.

Jon
 
Took it work today and it did just fine. Cruised at 35-45 most of the time and even got her up to 55 once. Its hard to get much speed on the mountain, but it behaves very well truging up and down the hills. I need to fine tune the ignition (dwell meter broke) or just upgrade to the pertronix unit. I really need to get the od setup in the 18 t-case, I need a split between 2nd and 3rd for the hills.
 
Good feedback from you both!

When the main jet on these mixers is a bit small (lean), they spit and pop back through the carb just like ignition timing is out of whack! They really don't do the "lean surge" thing at cruise because the economizer (power valve) is actuated due to low manifold vacuum which "masks" the leanness up to a point. That is about equivalent to increasing the main jet six to eight steps which is a bunch!

The od is just the ticket for overcoming the shortcomings of the oem t-90 three speed ratios! Ain't they dumb? Especially in the hills! The power characteristics of the 152 are a total mis-match for that tranny! And the 196 motor is no better.
 
michael mayben said:
Robert has extensive experience in road-rides with his s80/152 back and forth between lalaland and mammoth, and I have no idea what main jet he runs or if he swaps jets at some point. The ride up and down us 395 varies in elevation from 4,000>7,000ft. Nominal once he leaves the la basin.
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I don't lean at mammoth so at 10,000 feet it does get Rich but after I drive home to the la basin it would be lean. I have a mild cam so it would probably benefit from a few .001 of main jet increase. I do lower the fuel pressure to about 1.5-2 psi for trail rides and high angle climbs to help with fuel levels from causing issues. Only helps some but enough.

One thing I notice about the 1904 is that it gets real sensitive to excessive throttle plate angle at lower rpm ranges under load. Seems to lose venturi air velocity and fuel signal and go flat (lean). Usually below 2500 rpm up a hill and in a high gear as you give it more and more throttle it will pass a point where the more you give it the less torque it has. Kinda got to find the sweet spot.

I drive the 65' to big bear fairly regularly in the summer and the over drive is a life saver climbing 330. 2nd gear and od at about3500 rpm and 45 mph. 3rd is to high and 2nd to low.

The sherwin grade up 395 out of bishop is the same game. 45 all the way and half throttle at the bottom but 3/4 at the top as it runs out of air.

I would recommend a new saturn over drive to any Scout 80 owner who has the t90.
 
michael mayben said:
The od is just the ticket for overcoming the shortcomings of the oem t-90 three speed ratios! Ain't they dumb? Especially in the hills! The power characteristics of the 152 are a total mis-match for that tranny! And the 196 motor is no better.
Click to expand...

Yup pretty loooooong between 2 and 3, even with the 4.88's. Its ok on the flats, bt I think the od will make it much more drivable in stock form.

What the hold-up on the 152 monster motor? I'll have a few 152's hangin around here in a couple of weeks, so it might be a possibility for the "frankin-80" thats runnin around in my head. (damn I need to win lotto!)
 
71mtnscout said:
What the hold-up on the 152 monster motor?
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Well......... I have lots on my plate and as soon as I find time and some spare money the "monster motor" will make some progress.

Got the intake manifold flanges in the cnc as I write this. So that is progress.
 
The hold-up with the 152 stroker motor project is called... The ihon forum and carburetor shop, Binder Bee 2010, project uncle ed, making a true dd outta the chunk, babysitting binder u. Kidz, and maintaining 4.5 acres of landscape inna rain forest while fighting moles. And I'm retired so I don't move very fast at all.

Around October (and after the Sierra Fall Rallye) stuff slows down around here and the stroker motor will be the winter project once I can get my own rollin' stock back into the shop. I'm done with taking on these large, long-term vehicle projects for other folks, it's ceased to be fun at this point.
 
Oooooh..............real busy right now, I understand. I'm a little slow outta the gate, but I get there eventually.
 
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