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Old 03-31-2015, 11:27 AM   #151
BrewinAZ
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Default Re: The Ultimate IH Fourbanger

How is this coming? I'm the noob to the site, but really interested in where you are going with this. I know you have a lot on your plate (from reading your posts), but you really have my attention.
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Old 04-01-2015, 04:39 PM   #152
Robert Kenney
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Default Re: The Ultimate IH Fourbanger

Not much movement on this project. Took on helping a friend restoring a 71 c10 short bed. Rust repair right now and flipping the rear axle to lower it 5+ like the front. Nothing like a hammered c10.
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Old 04-01-2015, 04:44 PM   #153
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Default Re: The Ultimate IH Fourbanger

Man I understand too well. I have an '80 fsj getting a full power-plant swap that I have to have done by the end of May as my daughters graduation present (you gotta love a girl that wants a wagoneer instead of something new) and a tj that I am rebuilding too, so I bought a Scout 'cause I don't have enough projects going...
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Old 06-27-2015, 04:31 PM   #154
Robert Kenney
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The land cruiser block is at the machine shop so I had some time to make progress on the 188 inch 152 stroker. Mounted the nos block on a spare engine stand and began mapping the cylinder wall thickness. First I marked a 12 gauge solid wire at 1/16 increments to get a good idea. Accessing the water side wall I measured through the cooling passage holes and marked the deck 1-3. 1 means 1/16 3 = 3/16 from the hole edge to the water side of the bore. Then I measured the hole to the piston side of the bore subtracting the gauged 1-3 reading and marked the deck in a decimal witch represents the bore thickness. The thinnest I got that way was .318. That's good because after boring to 4" I still have .25+ wall thickness. I like 3/16 (.1875) + for good stability. Next I'll need a set of main bearings to mock the crank and a cut down piston to mock the crank and rods. It should go quickly from here on out.

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Also good the block being a nos IH service part, it had new IH cam bearings in it. They should be ok as they have never seen service or any abuse. I will leave them be.
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Old 07-12-2015, 08:20 AM   #155
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Default Re: The Ultimate IH Fourbanger

Sourced a new 396 bbc piston and machined it to fit the stock bore. This is only for mock and clearance checks so it is not functional any more. Machined the diameter and compression distance to the numbers I calculated.

Installed the cam. Spins with only fingers on the nose. IH did a great job installing the bearings. The rear cam bearing is installed as we expected, about 3/32 below the rear most surface that the plate seats on. The lifter bores and lobes are correct with the lobe favoring the rear of the lifter bore. The lobe is supposed to have the taper proud to the rear of the lobe.

There is a lot of room between the rod and cam. The 4 bangers also don't have a lobe that is inline with the rod but even a v8 will have no problems.

The same clearance is true with the rod to block and piston to crank counter weights.

Here are a few pictures for reference.

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Old 07-13-2015, 05:34 PM   #156
Mark Pietz
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Default Re: The Ultimate IH Fourbanger

Wow, getting a bit closer….
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Old 04-20-2019, 03:45 PM   #157
Robert Kenney
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I'm going to resurrect this project. The new Scout didn't materialize for a number of reasons, so now I can justify rolling my backup 152 into my shop and begin mocking up the intake manifold, exhaust/turbo manifold and intake plenum.
The first generation of this project will be a stock stroke 152 that may have a non stock bore, rod length and some comprehensive port massaging. .

It will have the two DHLA40H side draught DeLortos, and a properly sized turbo which I already own. They will be running in the typical blow through configuration and most likely incorporate an after cooler.

Stay tuned if you are interested. Don't hesitate to kick me if I slack off on making progress.
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Old 04-22-2019, 04:39 PM   #158
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Default Re: The Ultimate IH Fourbanger

Continuing to watch with interest!
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Old 05-08-2019, 03:26 PM   #159
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So far I got the extra engine stripped of parts that will be replaced by new the intake and exhaust assemblies. Mounted both intake and exhaust flanges. I'm getting ready to form the round to square, trap, and rectangle transitions for the ports this weekend. Purchased a couple of 2 foot lengths of 304 SS tubing 1-5/8 round in 18 and 16 gauge + 1-1/4 18 gauge from Burns Stainless.

Also bought one of IHPA's mini high torque gear reduction starters to free up as much room as possible for the exhaust and turbo. The OEM direct drive starter is big and makes things tight.
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Old 05-11-2019, 07:39 AM   #160
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Went out to the shop early this morning with my cup of coffee, and tested my home made forming tools. They made easy work of the transition stubs. Need to complete the set and a few extra cause I know I'll screw a couple up fabricating the manifolds.

Cut 2-1/4 inch pieces of the correct tubing on the band saw, used the lathe to make the ends square and flat, and used my mill vice to press form the shapes. Also helped the forming process with a round face body hammer.

I think the 1-1/4 OD tube that I chose for the coolant ports is small. I will order a piece of 1-3/8 and try again next weekend.

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“Don't lift until the fear of death over comes the fear of speed.” Author Unknown

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Old 05-17-2019, 03:03 PM   #161
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Default Re: The Ultimate IH Fourbanger

I think I am going to try and utilize the OEM 3 bolt exhaust manifold. Did a very rough mock up, and I think it will work. Plenty of space for the turbo charger and plumbing.
The compressor housing will index about 80-85 degrees to face the outlet more of less up if I need to. I plan on having a charge air cooler so down facing is better as it would go below the engine mount bracket and through the existing oblong 3X4.5 hole in the core support, through the cooler and back through the same hole.

I went ahead and bought the exhaust and intake flanges so I could see how they would.

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Old 05-18-2019, 12:01 PM   #162
Mark Pietz
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Default Re: The Ultimate IH Fourbanger

Been a long time since I had a model 80. So there will be room above the frame rail? Just trying to visualize it.

Last edited by Mark Pietz; 05-18-2019 at 12:04 PM.. Reason: typo
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Old 05-18-2019, 12:20 PM   #163
Robert Kenney
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Default Re: The Ultimate IH Fourbanger

It tucks in under the exhaust manifold. Plenty of room.
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Old 05-19-2019, 11:59 AM   #164
Mark Pietz
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Default Re: The Ultimate IH Fourbanger

Looks like a 152T 3-bolt manifold.
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Old 05-19-2019, 07:04 PM   #165
Robert Kenney
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Default Re: The Ultimate IH Fourbanger

You might be on to something. I have two of these manifolds and one for sure came from a 152T. This mock up engine has a special port in the lifter cover that was likely the oil return for the oem turbo?.
I had just assumed that these were standard three bolt exhaust manifolds. I had better use one that I can source new.
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