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> 3rd gen 3S block, The "Cracking issue"
post Mar 28, 2014 - 7:25 AM
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Alan



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Hey guys I am currently building a 3rd gen 3s engine and my only concern is the block cracking problem my Block is a 3s 1996 block it is the thicker reinforced block.
I am aiming for big HP (850WHP), but this block roumors are getting abit to old everyone says different thing about it use sleeves dont use sleeves use Hardblok dont use it, leave the bore standard... alot of mislead info

Can anyone out there share with me what I should be doing with my block should I sleeve it or not the bore I am going for is 86.5mm I have had someone tell me its not safe to go above 650 with this bore this person uses sleeves and has no probs but I have other freinds stating that the sleeve will still crack so basically I dont know who to belive .

I have spent thousands on parts I dont want it all to go to ****s after all this money spent only weak spot i found is this block issue so please anyone out there running big hp on a 3S share with me what I need to do.

Also I would like to use the 3s block I dont wanna use the 5s!!!


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post Apr 1, 2014 - 10:14 PM
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Rusty



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The road & track technical article I thought was quite good, but they basically said if you order a new block from Toyota there's no guarantee that you'll get the stronger block.

The NZ GT-Four owners (the ones who have done some interesting engine builds) don't really post on global forums. Also you have places like CCuk GT4DC & GT4OC, & 6GC altough is world wide, there are lots of USA members on it and they didn't get the GT4 like we did.


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