What is the limit of the stock block?
Newbie
Joined: Aug 2008
Posts: 94
Likes: 0
From: Dirty Jerz
He is running an fp red? No
Like the post says just wanted to know what are the hp limits on the stock block has anyone blown them up yet how much boost do they handle before boom cause i see alot of people sleeving and block gards but no one has tested the limits on a non sleeved block who is to say they hold 800 hp who is to say they dont please big shops chime in
2. That is a gigantic run-on sentence.
3. The limit seems to be in the 650WHP range.
Last edited by redleg225; Jul 25, 2009 at 03:35 PM.
Evolved Member
Joined: Jun 2009
Posts: 653
Likes: 12
From: Houston, TX
Regardless of the original posters sentence structure, this is a very usefull question. The answer allows people to stop adding power at a level prior to imminent parts explosion, at least somewhat. If only the answers were simple.
I would honestly like to see some professional shops weigh in on this matter, with known data, on known properly tuned and modded cars. For one, improperly tuned and poorly modded cars can skew data. We have seen this in numerous threads already where people are tossing parts out the side of the block, with huge boost spikes, no tune, etc.
The other thing I have noticed is that the numbers move around a bit. I see in some posts where car "x" is claimed to be tracking with 550 hp on stock internals, and others where guys are shelling parts at much lower numbers. This leads me to believe that car "x" is perhaps properly modded, professionally tuned, with correct supporting mods, etc., where some others are ....not so much.
I would honestly like to see some professional shops weigh in on this matter, with known data, on known properly tuned and modded cars. For one, improperly tuned and poorly modded cars can skew data. We have seen this in numerous threads already where people are tossing parts out the side of the block, with huge boost spikes, no tune, etc.
The other thing I have noticed is that the numbers move around a bit. I see in some posts where car "x" is claimed to be tracking with 550 hp on stock internals, and others where guys are shelling parts at much lower numbers. This leads me to believe that car "x" is perhaps properly modded, professionally tuned, with correct supporting mods, etc., where some others are ....not so much.
ok so i have read this thread rather quickly.
1) how come some high power evo's (gates311) are fine?
2) is it purely a function of boost, or overall power output?
3) is it linked to any particular age of build? ie earlier evoX's better/worse than later?
1) how come some high power evo's (gates311) are fine?
2) is it purely a function of boost, or overall power output?
3) is it linked to any particular age of build? ie earlier evoX's better/worse than later?
I'm going to answer one of my own questions here:
since this seems to be a problem of tolerances, it appears as though mitsu made the gaps to tight (both ring and piston/wall)
so rather than a function of boost, it appears to be a function of heat.
ie run meth/water or E85 and heat should go down significantly and thus expansion caused by heat should NOT be a problem...
since this seems to be a problem of tolerances, it appears as though mitsu made the gaps to tight (both ring and piston/wall)
so rather than a function of boost, it appears to be a function of heat.
ie run meth/water or E85 and heat should go down significantly and thus expansion caused by heat should NOT be a problem...
I just think that all you need to do is to make a weld in blockguard on number 4 cylinder that is the only place were it is not braced and maybe in between the cylinder so you dont have to spend 1500 to 2000 in sleeving a motor
