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91 Hatch
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541 Posts
Discussion Starter #1
i did 2 hours of searching and found all different things...i was just wondering about how much these d-series stock sleeves can handle with forged internals??is 350whp pushing it??im going to get tune with my stock sleeves and forged internals and my goal is 350whp but its my dd so just wanted to see if anyone on here make that power on here and how long did it last...well i kno lots of u guys made that power on stock sleeves...lol
 

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OMG TOTALLY COOL TITLE!!!!
88 y49 crx
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there is no way you did a 2 hour search and still not know that answer.....unless you are still searching gay porn and not the showcase or forced induction forum...
 

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CRX!!
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Ive heard that stock crank and cylinder walls will hold up to around 700whp.

*((((("heard")))))

That's as long as you dont detonate.

If your gonna be running pump gas dont go above 18-20psi, or you will suffer the consequences, especially on a dd; but if you stay under 20 no worries!! =)
 

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'97 crv
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1,467 Posts
I'd rather be safe than sorry when running that kind of boost.

Sleeve the bitch and call it a day
 

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CRX!!
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I'd rather be safe than sorry when running that kind of boost.

Sleeve the bitch and call it a day
Nah!! Of course sleeving is better in the long run! But it wont be necessary if he is only running pump gas on a dd. 93 octane can only take upwards of 25ish psi or so before it detonates.

So 20psi is a good safe mark to cap your boost off at, with 20psi... depending on your c/r... more than likely wont break 400whp... Soo youll be safe with those numbers.
 

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ahhhhhhhhhhh

horrible advice in here....other than the searching comment

psi does not break things.....EVER!!!....HP/TQ does however

every car is different, and every car will have a different breaking point... dont use a block guard....they are junk....but a quick search of 5 min should have turned up that 450whp is about where you run into not if but when there will be a failier....it could happen right away or 5 years down the road....at 350 you will be more than safe assuming you have a good tune....bad detonation WILL break things regardless of power levels


and no psi will not break things...answer this question....will 25psi out of a dsm t25 translate into the same power/ torque produced by a percision 6262 at 25psi?......
 

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I love hearing people measure power in PSI ;)


Any how yea you' didn't really search. There are atleast 2-3 builds on the first 2 pages ATLEAST I did not even go to check, of people pushing over 350Hp on 93oct
 

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McLOVIN
2002 Civic Si
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800 Posts
Jfk78 had 603whp before he destroyed 2 sleeves, but he had wrist pin failure...

Go autoworks had 500 or so whp iirc.

I would feel safe on stock sleeves at 500whp. I wouldnt be worried about my sleeves anyways....
 

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DOOKIE
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ahhhhhhhhhhh

horrible advice in here....other than the searching comment

psi does not break things.....EVER!!!....HP/TQ does however

every car is different, and every car will have a different breaking point... dont use a block guard....they are junk....but a quick search of 5 min should have turned up that 450whp is about where you run into not if but when there will be a failier....it could happen right away or 5 years down the road....at 350 you will be more than safe assuming you have a good tune....bad detonation WILL break things regardless of power levels


and no psi will not break things...answer this question....will 25psi out of a dsm t25 translate into the same power/ torque produced by a percision 6262 at 25psi?......
goooooddddd fucking info ^^^^ horsepower and trq kill engines not boost..........350wheel stock sleeves should be safe, as long as the tune is on point. goodluck
 

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Built zc u did not search very good! Every block is different..scotth20 is the only one telling helpful info here ...450whp is pushing it on stock sleeves!300whp or 350whp is the most ill push it on a daily driver so people stop giving useless info please! Not trying to be a Dick just really hate when people give bad info..
 

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1999 EJ8
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With my knowledge, 400whp is the known breaking point of the sleeves.

Some have pushed far more on stock sleeves.

If you were planning on pushing 450+whp, I'd invest in aftermarket sleeves.

A rough equation of longevity is: 10% mechanical health / 60% tune / 30% how you drive it.

And as was said, PSI means absolutely nothing. It's all about the WHP/TRQ produced, that determines how much stress everything is under.
 

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1991 Honda CRX
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A rough equation of longevity is: 10% mechanical health / 60% tune / 30% how you drive it.
Agreed, I've seen guys running a fresh setup, they get a basemap or a crappy tune and drive it like crazy, then bam the whole engine blows up and they don't understand why it happened...the tune is everything. There really isn't set hp/tq limit on stock sleeves, some people make 300whp and crack sleeves, some as stated above make 500whp+ without problems. I just found a cheap GE sleeved block, that way I never have to worry about it.
 

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See above...
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Seeing my block held 400+ fine with heavily advanced timing on E85, I see the new "magic" # to closer to 500. With modern-day tuning technology and tuning toys, I feel this is a fair estimate.
 

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The engines are already on 14.5 psi from the factory, so I dont see who you could throw bump the boost up to 40 psi on the stock sleeves. You just gotta make sure not to break the canooter valve

You may also want to use a turbo ecabulator.
 
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