Welding IA large CID block after broken rod on Net.
Curious.I've been reading about that large IA block with one main missing due to rod breaking. Thermal welding the new piece in place. For you high end guys is this repair safe with all the $$ spent?
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Forget that it is safe. It is too costly and not ever worth doing.
https://www.youtube.com/watch?v=vgdeN7Muvhw Old thread: https://forums.maxperformanceinc.com...=welding+block |
It was very fascinating to watch and it makes me wonder if the origional casting molds for that block are still around and can be redeployed. With the cylinder head advancements now available, building a 600+ CI engine is far more practical now than when this block was cast.
Speaking of practicality, unless you're stupid rich and can afford not to be practical, this was nothing more than a "yes, it can be done" process. Now that I know in theory and with enough money, I can have my 557 block "thickened/reinforced" at a cost much much higher than a new aftermarket block... |
I never heard of that big CID IA block. I was interested in the tech. However for cost I was thinking just buy new.
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They act like that IA1 block is some super rare and desirable piece. Just buy a IA2, done.
The Indian head logo is cool though. |
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Did I miss understand about that block? Isn't that a tall deck height block they are fixing? Stan |
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IndianAdventuresTTF!
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Do you guys think they were able to save it? Did not see an updated video so was guessing that it maybe didn’t work out…
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Any cast iron welding is a risk. |
Does anyone know if the tall deck height blocks had a raised cam location?
Stan |
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Dragncar you are saying make a plate similar to a honing plate then install sleeves to the height of the plate? Would head bolts hold everything in place then?
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Steve Barcak did something like that to a big inch configuration on a 370 (or was it a 389) block I thought.
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Old post from 2014 from Steve.
"My 577" is a '59 389 with a .315" over stock bore and stroked 1.050"! This was done around 20 years back in an effort to have the largest Pontiac ever. The problem with boring out the stock cylinders is that the deck is not strong enough to support it. I learned this from Ken Crocie, he had told me he had tried it years earlier and the decks lost so much strength, it would not work. The way I made mine work was to use deck plates that raised the deck and added the support needed for integrity. I ordered custom extra long sleeves to accomplish this. Again, this was very expensive and time consuming and before the aftermarket blocks were available. If you can access a boring bar to use as I did, you can try all sorts of things but, as others said, you are better off seeking a 400 block." I know he showed pics and all but I cannot find it right now. Hopefully he weighs in. Ahead of his time here. |
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Thanks. Do you happen to know how much the cam was raised? Stan |
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Stan |
See his website pic of the "deck spacer" here; scroll down.
http://www.pontiacheaven.org/race_cars.html |
See his website pic of the "deck spacer" here; scroll down.
http://www.pontiacheaven.org/race_cars.html |
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Pic here.
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This is another video that was made by Dave's Auto after the initial cast welding was shown in the original video. Dave is talking to Lake Speed about oil, and oil change intervals. He shows the block to Lake Speed after the rough grinding has been done just to get it close to the original dimensions, before machine work is done.
Link to video where they talk about the high deck IA block: https://youtu.be/fu7PlRsqMyA?t=565 Lake Speed discusses the how and whys of ZDDP, and how too much concentration in break in oils, that can actually promote prematue wear. He also discusses that zinc isn't the primary anti wear agent, and how phosporus does more to stop wear. There is a lot of good info in the remaining video about oils, and additives. |
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