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Old 05-17-2020, 10:39 AM
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Dave/Lonnie, yes the 100 and 115 use the same carb, but, there is always a but around things . the easy fix below.

the problem) so the 115 intake manifold is too small to fit in the 125 carb, and, the 125 intake is too large to fit in the 115 cylinder head..

the fix, is rather easy,,
A) the 125 carb "barrel" will fit in the 115 carb body.
B) but there is a lip inside the 115s carb body that holds the intake manifold from touching/rubbing on the barrel, this lip is also the same ID as the 115 carb barrel.
C) but this lip can be removed, this allowing the larger 125 barrel to work in the 115 carb body,
D) but, if that lip is removed a washer will be needed to be spot welded to the 115 intake to stop the intake from rubbing on the 125 barrel.
option) I cant remember, but you may need to open up the intake side of the 115 carb for the 125 barrel.

the thing is, as Lonnie did with the 100 carb on the 82, you could use a fatter O-Ring in the 125 carb to fit the 115 intake manifold, but if you do the 115 manifold could slip down and rub on the carb barrel, at that a washer should still be spot welded to the intake manifold to stop the manifold from slipping down...

Jim
Old 05-17-2020, 11:22 AM
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No more carb swaps for this tuner, at least not until I see a problem. Swapping in a 100 carb on the High Compression 82 did little for peak rpm and negatively affected transition off idle and midrange rpms.
Old 05-17-2020, 12:19 PM
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Originally Posted by Glowgeek
No more carb swaps for this tuner, at least not until I see a problem. Swapping in a 100 carb on the High Compression 82 did little for peak rpm and negatively affected transition off idle and midrange rpms.

I was thinking all about that as I was ^typing^.

but you know what, I think the 100 carb will work on the 91, we will see

Jim
Old 05-17-2020, 12:53 PM
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Default Saito FG-61TS break in question

Per the manual the proper run in instructions are to set high speed needle at 3 out, start and warm, then open until RPM drops/dulls. When I do this, only 1 cylinder fires regularly as confirmed by 2 temp sources (telemetry & laser temp) - 300 vs 100 degrees. To get both cylinders to temp requires leaning the carb.

What’s the recommendation? Continue running on 1 cylinder for the stated 2 tanks or lean out to get both cylinders run in?

Cheers
Old 05-17-2020, 12:55 PM
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Let us know how that works out Jim. Wouldn't change a thing on my 91S. That thing makes well over rated hp and transitions wonderfully. Now to find something to mount it on.
Old 05-17-2020, 12:59 PM
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Originally Posted by marksp
Per the manual the proper run in instructions are to set high speed needle at 3 out, start and warm, then open until RPM drops/dulls. When I do this, only 1 cylinder fires regularly as confirmed by 2 temp sources (telemetry & laser temp) - 300 vs 100 degrees. To get both cylinders to temp requires leaning the carb.

What’s the recommendation? Continue running on 1 cylinder for the stated 2 tanks or lean out to get both cylinders run in?

Cheers
Did you check to ensure both plugs are producing a similar spark? If they are I'd lean it just enough for both cylinders to fire.

Last edited by Glowgeek; 05-17-2020 at 01:40 PM.
Old 05-18-2020, 03:45 AM
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Do not try to break it in on one cylinder, the cold cylinder will never break in. Lean the HS screw to 2.5 turns and try it, as soon as both cylinders fire go back to three turns. Toss those temperature things into the nearest river.
Old 05-18-2020, 08:00 PM
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guys, get your money roll out, here's a Saito 200TI,, only 900

yee-up, only 900
https://www.rcgroups.com/forums/show...49-Saito-200TI

Jim
Old 05-19-2020, 04:42 AM
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That is some hunk of engine alright!
Old 05-19-2020, 05:20 AM
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Latest update on what no good Pete is up to:

I like moki engines a flying mate has a 250cc open rocker radial for his fw190 i'm going to paint in winter camo for him, it's huge. We'd had a few beers when i volunteered dammit. I've sold all my saito's and the aircraft they were in but kept an 82b which is in my 46 size decathlon, it's a hoot to fly. Going to be travelling around west aussie soon.
ps from memory when i ran my fg57t in on the bench the standard plug came with a .7mm plug gap but people were gapping them at .6mm to get a fatter spark. I think the guy with the fg61t should keep the temp sensors it is a good tuning aid on a gas engine, they run much hotter than our methanol saito's especially when they are cowled, or would throwing the whole test bench in the river cool it down better ? looking forward to the fa115 and fa cough 125 tests. I believe a good 125 will do better with the top prop, my point has always been that the fa115 performs eagerly from the get go is hard to beat re power to weight. Pete
Old 05-19-2020, 12:37 PM
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Originally Posted by FlyerInOKC
That is some hunk of engine alright!

yee-up, you got that right !!, Pete should have one in a 76" span Midge Mustang


Jim
Old 05-19-2020, 12:46 PM
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Pete sold all his Saitos and the planes, all but 1



my god, that news is like loosing a best friend !

Jim
Old 05-19-2020, 03:11 PM
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Originally Posted by the Wasp
Pete sold all his Saitos and the planes, all but 1



my god, that news is like loosing a best friend !

Jim
My reply went like this:

You sold all your Saitos?! Name:  1f632.png
Views: 210
Size:  1.1 KB You need urgent mental health care! I never would have thought that it would happen to you! I know the mind and memory are the second things to go, I forget the first, but to be cut down in the prime of life. Next thing you know you will give up beer and go on the wagon. I just hope its not the start of some new virus pandemic destine to wipe out life as we know it! Our only choice left is to find a nice asylum to keep you comfortable until the bitter end! Too melodramatic? Name:  1f601.png
Views: 209
Size:  1.1 KB
Old 05-19-2020, 06:14 PM
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what's next, selling his Ducati and buying a Ford Pinto ????

Jim
Old 05-19-2020, 07:50 PM
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Originally Posted by the Wasp
what's next, selling his Ducati and buying a Ford Pinto ????

Jim
More like a Chevy Vega, a 1972 model
Old 05-20-2020, 06:39 AM
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I have been taking a closer look at the "stuff" that Gary sent for my birthday, I have a good start on a 120, 150 or a 180. I would have to paint the plain 180 cylinder to match the black crankcase.

I think that Pete was greenin us about selling all his Saitos. My only non Saito is an OS 120 with a pump. I don't know what to do with it.

PS, I had a 1973 Chevy Kamback Vega and loved it. I pur Koni shocks all around and made my own 2.5" exhaust with a Thrush Turbo muffler.


Last edited by Hobbsy; 05-20-2020 at 06:42 AM. Reason: Add content.
Old 05-20-2020, 07:03 AM
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Originally Posted by Hobbsy
I think that Pete was greenin us about selling all his Saitos. My only non Saito is an OS 120 with a pump. I don't know what to do with it.
Model boat anchor? Or send it to me and I'll save you from the social stigma!
Old 05-20-2020, 07:42 AM
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Originally Posted by Hobbsy
I have been taking a closer look at the "stuff" that Gary sent for my birthday, I have a good start on a 120, 150 or a 180. I would have to paint the plain 180 cylinder to match the black crankcase.

I think that Pete was greenin us about selling all his Saitos. My only non Saito is an OS 120 with a pump. I don't know what to do with it.

PS, I had a 1973 Chevy Kamback Vega and loved it. I pur Koni shocks all around and made my own 2.5" exhaust with a Thrush Turbo muffler.

I had a 73 Coupe with a 77 Sleeved engine and 75 ignition, and 2 barrel Holley. Only rust was the bottom corner drivers side where the rocker met the B pillar. I had a 74 wagon before that, complete rust bucket. I put house speakers in the back and a decent radio. My friend and I were sitting in the car jamming to tunes when we heard a crash. Yep, blew the back window out.
Old 05-20-2020, 08:11 AM
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I worked with a guy that had a 72 Vega coupe. His had one bad habit, if he tromped on the accelerator pedal too hard it would occasional blow the steel ring holding the spark plug out of the aluminum head on one cylinder. He had a blueprinted V8 he wanted to install it but after further research he decided even with an added subframe his body wasn't up to supporting the idea and sold the engine.
Old 05-20-2020, 09:36 AM
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Originally Posted by acdii
I had a 73 Coupe with a 77 Sleeved engine and 75 ignition, and 2 barrel Holley. Only rust was the bottom corner drivers side where the rocker met the B pillar. I had a 74 wagon before that, complete rust bucket. I put house speakers in the back and a decent radio. My friend and I were sitting in the car jamming to tunes when we heard a crash. Yep, blew the back window out.
yee-up, that will do it LOL LOL

Old 05-20-2020, 09:55 AM
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I love the Vega, never had one tho, my brother had a 73 for a while.

we had a guy up here in 79 that had a stock 350 in his Vega, they say he did wheelies with it but I never saw that. LOL but I did see him try once, it didn't, it couldn't. he tried that too many times, he broke some thing, I don't know if he pulled the sub-frame bolts threw the floor or bent the sub-frame, but whatever he messed up, the car went to the dead car yard.

Jim
Old 05-20-2020, 10:00 AM
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Originally Posted by Hobbsy
I have been taking a closer look at the "stuff" that Gary sent for my birthday, I have a good start on a 120, 150 or a 180. I would have to paint the plain 180 cylinder to match the black crankcase.

I think that Pete was greenin us about selling all his Saitos. My only non Saito is an OS 120 with a pump. I don't know what to do with it

PS, I had a 1973 Chevy Kamback Vega and loved it. I pur Koni shocks all around and made my own 2.5" exhaust with a Thrush Turbo muffler.

Dave, did you sell the K&B 100 ??
as far as smelly 2st go that's a beautiful engine.

Jim
Old 05-20-2020, 10:31 AM
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Originally Posted by the Wasp
I love the Vega, never had one tho, my brother had a 73 for a while.

we had a guy up here in 79 that had a stock 350 in his Vega, they say he did wheelies with it but I never saw that. LOL but I did see him try once, it didn't, it couldn't. he tried that too many times, he broke some thing, I don't know if he pulled the sub-frame bolts threw the floor or bent the sub-frame, but whatever he messed up, the car went to the dead car yard.

Jim
My same friend and I were sitting at our hangout spot, Ronalds, at Fullerton and Pulaski just watching cars go by while chowing down on the 1.2 pound Ronalds Burger, MMM I miss that place. ANyway, a Vega comes up to the light, you can tell it had a V8 dropped in it. Rumble rumble. Well, apparently the bozo did not understand what Unibody + subframe meant when dropping a V8 under the hood. A Camaro or Firebird pulled up next to him(can you believe spell check knows neither of those two car names?) and they started doing the rev challenge at the light. Friend and I look at each other, this will be good. Light turns green, engines roar, tires squeal, one car takes off like a BOOH, the other sits there with one wheel spinning in the air. If you guessed the Vega, you are right! Yeah, the V8 twisted the car like a pretzel, and since it had an open diff, the one wheel was so far off the ground it just spun. We laughed so hard we were in tears.
Old 05-20-2020, 10:41 AM
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LOL a great story there !! LOL

Jim
Old 05-21-2020, 10:23 AM
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OK, here is going to be another parts engine, a Saito 120-S, I sleeved a 150 carb down .5 mm and moved the carb mount holes to north and south from diagonal. The 120-S cam housing will not workwith the mushroom lifters and that means that the 120-S push rod covers are a hair long, easily fixed. I am waiting on a ring and bearings, the cam I put in it has an S on the front and is not worn at all. The crank case has no initial on the right and appears to be brand new.


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