 3rd gen 3S block, The "Cracking issue" |
 Mar 28, 2014 - 7:25 AM
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 Enthusiast  Joined Jan 23, '05 From Malta Currently Offline Reputation: 2 (100%)  |
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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Replies
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Apr 7, 2014 - 5:43 PM
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Enthusiast Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) |
From memory it's because of thermal stresses caused by boiling between cylinders 2 and 3 due to the very very narrow coolant passage. Higher cooling system pressures, non boiling coolants, etc can help, as can meth injection.
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Posts in this topic
Alan 3rd gen 3S block Mar 28, 2014 - 7:25 AM
Alan Seriously Know one has any info about this??? I th... Mar 29, 2014 - 3:02 AM njccmd2002 sorry bro, not like the old times here, you may ge... Mar 29, 2014 - 8:00 AM Rusty There was some info on road & track au website... Mar 29, 2014 - 5:36 PM Alan Yeah I tried all these site Know one seems to know... Apr 1, 2014 - 3:59 AM lagos For a build like this, most people go with a 98+ 5... Apr 1, 2014 - 5:02 AM Rusty The road & track technical article I thought w... Apr 1, 2014 - 10:14 PM jbod Haha rusty yea im surprised no one knows a huge a... Apr 4, 2014 - 2:25 PM mgnt232 Our heads are the real first limiting factor (for ... Apr 5, 2014 - 7:29 PM Special_Edy Fill the bottom 2/3rds of the water jackets in the... Apr 6, 2014 - 6:00 PM
Special_Edy QUOTE (Bitter @ Apr 7, 2014 - 5:43 P... Apr 7, 2014 - 6:40 PM Bitter but you're also reducing cooling system capaci... Apr 7, 2014 - 11:39 PM |
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