Limited disassembly of a 1980 IC 196

I think I have all the final bits and pieces, except for the connection to a throttle cable. Still thinking that one through...and fabbing a bracket to support the air cleaner. But otherwise, pretty darn close now to firing it up just to check the tightness of bolts, fittings, joints, etc. Hopefully Saturday - this will be one of my Christmas presents to myself (this and buying that innovate lc-2 wide-band 02 sensor kit).

I removed the stock fitting that goes into the side of the intake manifold, that large squarish tube that all the little hoses and brake booster vacuum hose goes into. Too many nipples to seal off from boost. So I discovered it is only a 3/4" pipe thread, so bought a short nipple and cap and drilled and tapped for a 1/4" fitting w/barb to hook up the brake booster, and also for the little plastic line that runs my map sensor. I scrounged a power brake check valve from a turbo volvo that will go into the Scout brake booster. The valve needs to resist boost pressure, so that's one less little detail to cover. I also will drill/tap a hole in the top of the carb's top cover for an ell so as to vent the float bowl to the charcoal canister. Oh, and still need to fashion a new heat stove to fit at the juncture of the exhaust manifold with the cast iron elbow. I need to pull off hot air from there and run it to the snorkle. So many little things to do...

I go to this trouble because my goal is to make this conversion look as close to something the factory might have done - and done right. I've seen enough modifications that weren't thought through in the little details and look like hack-jobs. I don't want that said about my Engine!
 
Sadly, these are the last things I can get done before the holidays. The rest must wait until January. Today I tack welded the snorkel to the air cleaner shell, and sealed all around where the two pieces meet so that air will only enter through the open end or through the 2" inlet when the damper is closed. Must wait for warmer weather to sandblast the shell and then paint.

I obtained more of that high-temp fiberglass cloth. First I peeled out the heavy foil that lined the dimpled shield material (what kind of glue did they use that would withstand that kind of heat???), lined it with fiberglass cloth, and then reinstalled the foil. Doesn't look all that bad, plus it will provide some actual shielding!

Then I spent most of the afternoon trying to weld up a small bracket to support the air cleaner. My rudimentary welding skills are still hit-or-miss. Status: done.

It's only when you really, really put things together that you find out what won't really go together. I need to use a longer 1/8" nipple to drop a brass t that mounts directly beneath the adaptor, due to clearance issues. And I'm throwing in the towel on the flame arrestor. The area around it is waaay too busy with the turbo drain ell and hose, heater hose, throttle return spring (needs to pass by it), a vacuum line, and linkage bracket for the carter yh. I'll put a pipe plug in the hole and buy a valve cover breather with a hose nipple to replace the oil filler cap. I'm having trouble locating one in the catalogues, but I know they make them. I'll route a hose from the breather to the air cleaner. Got the hose from the pcv valve to the adaptor done.

Had to shorten, re-flare, and tweak the fuel line from the fuel filter (normal location) to the carb. It runs past the thermostat housing, over the turbo oil feed line, under the turbo inlet hose, and then 90 degrees up to meet a fitting on the carb. Status: done right.

I spent 20 minutes with card stock cutting a template for tin to make an additional heat stove "box" that will cover the gap between the manifold heat shield and the iron elbow. I will put a short 2" tube stub onto it and this will collect the hot air that will feed into the snorkel.

Getting closer! IMG_1047.jpg

IMG_1048.jpg

IMG_1051.jpg
 
And these. I still need to remove the carb and drill/tap for a boost reference line to the intake manifold, and finish puzzling out the last portion of the throttle linkage.IMG_1053.jpg

IMG_1054.jpg
 
That's a very nice setup to minimize turbo lag. Are you going to cut a hole in the firewall and do a cowl induction system too??? As for the flame arrester, I have a '70 304 id a d series pickup that has an inline flame arrester.

Merry Christmas and happy new year, I'll be looking forward to hearing the road test results.
 
I had actually thought of cutting a hole in that firewall, but then passed. I May shorten the snorkel a little but it still clears the firewall by several inches and I can't believe performance will suffer for it. I had tried putting an ell in the valve cover hole to run the arrestor sideways, but clearance was still bad.

Edit: regarding any increase in performance, I discovered there is an app for the iphone that can serve as a rudimentary accelerometer or dyno. Various evaluations show that while it isn't the real thing, of course, it can be used to generator ball-park figures. Called "dynolicious". Does 0-60 and 1/4 mile. The thing I'm interested in is that if it gives even half-way decent accelerometer numbers, I can do the simple calculations to generate guesstimated hp and torque. Alternately, if I can Mark out a fairly close 1/4 mile, and know my weight (have to scrounge around for the weight ticket when I titled the beast), and get an et, then the results are fairly well established - nhra has generated a nomogram for this purpose.
 
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Looks good Mark..

I am bummed that we have to wait till after the new year to see it run..... :prrr:.........:d

but seriously I can't wait. Good job!! :thumbsup:
 
What did master po tell us? "patience, grasshopper(s)."

I could have done a little more today, but I drove "down the hill" early this morning to take care of some needed business but only got as far as the interstate. The alternator on my '85 jimmy took a dump and fried the fan belt and then I had no water pump….:rolleyes5: so I spent the morning having a wrecker get it back to the house, then back down the hill for a new alternator, etc. And wrenching out in the open under glooming skies.

Would have rather tinkered with the Scout.

We'll get there, eventually. :yesnod:
 
Didn't we pull that thing out of a field in 2010? :icon_ninja: it's come a long way, can't wait to see what that turbo does to the motor. Let me know your schedule over the holiday's might take a trip up the hill..
 
Yeah, it's been that long! But the deal with the wife was that it had to take a back burner to everything else, and so it has. But now that it's getting so much closer to being done, I'm getting very impatient.

We'll have to meet up sometime in January!

Missed you at the meet in Grass Valley.
 
Matt,
couple of pix as a reminder that thing was rougher'n a cobb! Still needs a lot of work, but at least now it's driveable. It still has those ancient, rock-hard tires, and the interior is hardly better. But the drivetrain now is almost in top-notch condition, except for the worn rear punkin'. Like horse people say, that Scout "was run hard and put away wet". Scout on trailer.jpg

Scout interior rough.jpg
 
It's all coming back to me now. Didn't it start raining just before we were about to load it? Seeing it now...it wasn't half bad. Looks pretty good sitting up there on the trailer.
 
scouty said:
it's all coming back to me now. Didn't it start raining just before we were about to load it? Seeing it now...it wasn't half bad. Looks pretty good sitting up there on the trailer.
Click to expand...

The seller somehow got it started and I managed to drive it up the ramps and onto the trailer. then The transmission crossmember separated from the frame. I wouldn't have had a prayer driving that thing back to sacramento, like I originally thought in my fevered mind. I do remember drizzle or rain. Lucky we got it out of there. Yeah, looked good on the trailer but it still a project vehicle. There was nothing about it that wasn't worn, beaten, or neglected. I still have all the hoops and hardware from the rag top it had sported until it was abandoned in that storage yard. We stopped by Jeff's on the way and picked up that terra top and set it on it. I always liked that look.

Engine compartment's come a long way! The bent fan is a nice touch.

Worn engine.jpg
 
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A happy new year and hopefully get this beast on the road fairly soon…

Robert,
I am going to defer the boost reference circuit for the time being, as more research must be done on exactly why it was carter did a certain thing to that carb. I need to go back to the corvair gurus to see what they have to say. Here's what I know. Carter put out a document on how the various circuits work on that thing, and what I am reading was put out for the corvair application. The vacuum chamber under the diaphragm that lifts the rod was originally connected to simple manifold vacuum. Some condition came up that required that passage to be intercepted by another one further upstream to bleed off this signal. The description goes no further than addressing a need to reduce The signal and also to make it more stable. What I need to dig out is why it was addressed at this late date (mid-60s) and not earlier when the basic carb was used on the first gen corvettes and also nash. It May Be that this was a work-around for the boost-reference thing. GM had already done that trick on the '62 olds jetfire turbo, but in this case an expedient May have been (speculating here) to reduce the strength of the signal so that the mixture is richer in the mid-range, which would cover the lean spot if conditions kick in the turbo. I can see that with the butterfly, say, half open, you'd weaken the signal and at full throttle the bleed wouldn't operate, but you'd be in boost and the rod would be full-up anyway. Justing "talking through a paper a**hole" here, but I want to run this the normal way and data-log the a/f ratio and see exactly how things operate. At least it should be "safe" for the time being. :001_icon_idea:
 
Probably a good idea to review gas sensor data before jumping at an afr change. I wanted to offer that the option exists to alter enrichment timing and quantity.

Not off to the shop to complete the land cruiser engine deconstruction which so far has yielded less than good news. :icon_rolleyes:
 
Off to a slow start…finished the air cleaner. I'm casting around for a custom decal that will incorporate "Scout II", "turbo", and the late model corvair turbo emblem theme (circular arrows in red and blue for hot and cold sides). Would look "factory".

Still a bunch of niggling things to finish. Throttle linkage appears to have a solution - I found a carb linkage ball stud in the "bits bin" everyone has, and the original throttle cable will contort into position to reach the new lever off the carb. I need to fab a bracket but the solution actually appears easy enough. It will bolt to the bracket I just made to support the air cleaner body. Pics to follow when done.

Need to sort out new water pump/alt. Fan belts. The alternator needs to swing waaaay out to clear the end of the 3-bolt manifold, and a 62 1/2" to 63" long belt will be needed (I grabbed a 63" belt from napa but I think a little shorter will work - stock length is way too short). Hopefully this week get down to tognotti's in sacramento (a speed shop) and see if they have an oil filler cap/IM002271.JPG

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IM002272.JPGbreather with a nipple to run vent back to the air cleaner.
 
Almost there. Smashed my hand today which will slow me down, but not before I got this done. All that is left is welding up a small throttle bracket (I think I have a solution there), and getting some tin to fab a hot-air stove for the junction where the cast iron elbow joins the exhaust manifold. Otherwise, it's all hooked up. Right side of the engine compartment is now very busy; still need to organize the heater hoses better. But everything is otherwise hooked up. There are lots of little details that can only be figured out once you get to this stage, like a throttle return spring (hooked to a boss on the turbo), vacuum "t" to pick off feed to run snorkel vacuum servo; found an oil breather cap w/smog nipple at a local speed emporium yesterday. So all the correct fittings are in place and hooked up. Good feelings! :thumbsup:

maybe Sunday I can fire it up. IMG_1135.jpg

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