SPINOFF: List of motors with stock sleeves that had sleeve failures
12-12-2009, 06:42 AM
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SPINOFF: List of motors with stock sleeves that had sleeve failures
Anyone that has had a STOCK VQ sleeve fail not as a result of another part failing (ie, piston/rod), please post it here.
I want to dispel any myths that are STILL circulating about re-sleeving VQs to exceed 600ish to the wheels.
I want to dispel any myths that are STILL circulating about re-sleeving VQs to exceed 600ish to the wheels.
12-12-2009, 06:53 AM
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Doubt you will find any that have failed due to power issues. Not many people have the ***** to push the limits high enough to tell. If they did I dont think they are going to fail anyways, with the proper HG and L19s. I think time will prove that the factory sleeves are alot stronger then people come to think.
Last edited by thawk408; 12-12-2009 at 06:54 AM.
12-12-2009, 07:10 AM
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also how do you define failure of the sleeve, is a structural failure that breaks into pieces or is it movement of the sleeve since it is an open deck design, in which case you would probably see symptoms similar to headlift
12-12-2009, 07:15 AM
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Cracks, breaking into pieces, etc. It would to too hard to discern if the sleeve moved slightly or if there was a HG issue. Even so, I don't think there is anyone with properly torqued L19s and stock sleeves that have headlift symptoms.
12-12-2009, 07:16 AM
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Doubt you will find any that have failed due to power issues. Not many people have the ***** to push the limits high enough to tell. If they did I dont think they are going to fail anyways, with the proper HG and L19s. I think time will prove that the factory sleeves are alot stronger then people come to think.
12-12-2009, 08:31 AM
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there was one a while back....i think.He posted pics of burn thru to the water jacket.I can't remember details of the build or conclusions why it happened,but if some one knows the thread i'm talking about post the pic.
other than that......nada
other than that......nada
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12-12-2009, 10:07 AM
#9
intensepower had 906whp G35 green with stock sleeve
xkr 800whp with stock sleeve
Sound Performance G35TT 769whp
i have a 682whp with stock sleeve
and many others that i may forgot
non of which had failure engine that i know of !!
i think Jet pilot but am not sure if he had sleeve engine or not
hop thats help
link of the green G35
http://www.intensepower.com/inmovefowig3.html
xkr 800whp with stock sleeve
Sound Performance G35TT 769whp
i have a 682whp with stock sleeve
and many others that i may forgot
non of which had failure engine that i know of !!
i think Jet pilot but am not sure if he had sleeve engine or not
hop thats help
link of the green G35
http://www.intensepower.com/inmovefowig3.html
Last edited by 350z-900whp; 12-12-2009 at 10:17 AM.
12-12-2009, 11:07 AM
#10
^^^
Jetpilot had stock sleeves. I don't think his issues were with those, though.
My biggest concern is how much the stock sleeves will move under high stress. The head will help to hold them in place, but that puts more stress on the headgasket. For that reason, I'm still waiting for GTM to finish their R&D on a welded in block guard for my motor. I think they are getting close with a final design. It will add structural support to upper portion of the stock sleeves, and hopefully add longevity to the motor at the torque levels I will be pushing.
Jetpilot had stock sleeves. I don't think his issues were with those, though.
My biggest concern is how much the stock sleeves will move under high stress. The head will help to hold them in place, but that puts more stress on the headgasket. For that reason, I'm still waiting for GTM to finish their R&D on a welded in block guard for my motor. I think they are getting close with a final design. It will add structural support to upper portion of the stock sleeves, and hopefully add longevity to the motor at the torque levels I will be pushing.
12-12-2009, 03:33 PM
#13
intensepower had 906whp G35 green with stock sleeve
xkr 800whp with stock sleeve
Sound Performance G35TT 769whp
i have a 682whp with stock sleeve
and many others that i may forgot
non of which had failure engine that i know of !!
i think Jet pilot but am not sure if he had sleeve engine or not
hop thats help
link of the green G35
http://www.intensepower.com/inmovefowig3.html
xkr 800whp with stock sleeve
Sound Performance G35TT 769whp
i have a 682whp with stock sleeve
and many others that i may forgot
non of which had failure engine that i know of !!
i think Jet pilot but am not sure if he had sleeve engine or not
hop thats help
link of the green G35
http://www.intensepower.com/inmovefowig3.html
No outright failures. I have heard that one of those engines after a tear down for inspection had distorted cylinders. They were out of round I am not sure if the block was reused (re-bored) or garbaged.
That being said if I were to do it again or if I do need a new block. It will be a stock sleeved engine and I would push it to 800whp.
Last edited by Sylvan Lake V35; 12-15-2009 at 04:13 PM.
05-17-2010, 11:38 AM
#14
any new info on this? Seems like the builds over 800 whp are still sleeving.
If I can run 40psi and not lift a head (well I didnt knock, so I guess thats not very surprising), I am not sure if I want to mess with sleeving.
There are so few cars running in the 1000 whp club, its hard to get any real data on stuff besides, 'well thats what everyone else is doing'
But why does one need sleeves? Our block is sleeved already. I assume the Darton sleeves are stronger? But you are boring out the cylinder walls making them thinner. Seems counterproductive, as ya the tube might be stronger but if the walla holding the tube up are thinner, wouldnt that be more prone to movement?
I've just never read a good argument in my my350z searches on why we should use sleeves
If I can run 40psi and not lift a head (well I didnt knock, so I guess thats not very surprising), I am not sure if I want to mess with sleeving.
There are so few cars running in the 1000 whp club, its hard to get any real data on stuff besides, 'well thats what everyone else is doing'
But why does one need sleeves? Our block is sleeved already. I assume the Darton sleeves are stronger? But you are boring out the cylinder walls making them thinner. Seems counterproductive, as ya the tube might be stronger but if the walla holding the tube up are thinner, wouldnt that be more prone to movement?
I've just never read a good argument in my my350z searches on why we should use sleeves
Last edited by str8dum1; 05-17-2010 at 11:45 AM.
05-17-2010, 12:32 PM
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no that was that just a rad line coming off, everything was fine once back at the shop.. this was addressed in the thread a long time ago when the issue came up 
In any case, how many build engine high hp owners actually have the guts to put the caron the dyno at this events....
In any case, how many build engine high hp owners actually have the guts to put the caron the dyno at this events....
05-17-2010, 01:47 PM
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no that was that just a rad line coming off, everything was fine once back at the shop.. this was addressed in the thread a long time ago when the issue came up
In any case, how many build engine high hp owners actually have the guts to put the caron the dyno at this events....
In any case, how many build engine high hp owners actually have the guts to put the caron the dyno at this events....
It's like the telephone game we played as kids.
05-17-2010, 05:48 PM
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this is a good topic cuz just the other day i was at national speed talking about refreshing my motor and they kept saying to sleeve it but i don't know. The only thing i have ever heard about sleeved motors have been horror stories. But i hear all the time about stock sleeves taking more of a beating then people think they can..... is injected or sound performance running stock sleeves?
05-17-2010, 06:30 PM
#19
Registered User
I think when going deep into the 1xxx....sleeves are a good idea. You are asking for the block to take a lot of pressure in general at that point.
But like others have said, until you get into some pretty serious numbers (we'll say 1000bhp) on a pretty regularly driven car, or most race applications, I don't think sleeves are necessary.
But that is my $0.02
Tom
But like others have said, until you get into some pretty serious numbers (we'll say 1000bhp) on a pretty regularly driven car, or most race applications, I don't think sleeves are necessary.
But that is my $0.02
Tom
this is a good topic cuz just the other day i was at national speed talking about refreshing my motor and they kept saying to sleeve it but i don't know. The only thing i have ever heard about sleeved motors have been horror stories. But i hear all the time about stock sleeves taking more of a beating then people think they can..... is injected or sound performance running stock sleeves?
05-18-2010, 03:50 AM
#20
1000bhp, check
regularly driven, check
race application, check
so if you go with a stroker crank, do you still use the normal length rods, ie the 3.8L with 96mm bore, do you use normal Pauter,Carillo etc rods?
regularly driven, check
race application, check
so if you go with a stroker crank, do you still use the normal length rods, ie the 3.8L with 96mm bore, do you use normal Pauter,Carillo etc rods?
I think when going deep into the 1xxx....sleeves are a good idea. You are asking for the block to take a lot of pressure in general at that point.
But like others have said, until you get into some pretty serious numbers (we'll say 1000bhp) on a pretty regularly driven car, or most race applications, I don't think sleeves are necessary.
But that is my $0.02
Tom
But like others have said, until you get into some pretty serious numbers (we'll say 1000bhp) on a pretty regularly driven car, or most race applications, I don't think sleeves are necessary.
But that is my $0.02
Tom