when to consider sleeving a motor...
09-22-2006, 12:24 PM
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when to consider sleeving a motor...
At what point do you need to sleeve a motor? I am thinking about buying a GSR block locally, and I can probably get it for around $1000, it is rebuilt, has a block guard, 11.5:1 pistons and ARP rods and bolts. Cant remember much of the details.
The only thing I am hung up on is it is not sleeved. The guy was obviously building it, and then didnt sleeve it. My plans would be to SC it eventually. I am not going for anything crazy, but I would like the option to push the motor to 250 whp. Is this a safe number to shoot for without sleeves? 11.5:1 and a supercharger makes me wonder too....
The only thing I am hung up on is it is not sleeved. The guy was obviously building it, and then didnt sleeve it. My plans would be to SC it eventually. I am not going for anything crazy, but I would like the option to push the motor to 250 whp. Is this a safe number to shoot for without sleeves? 11.5:1 and a supercharger makes me wonder too....
09-22-2006, 12:34 PM
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Re: when to consider sleeving a motor... (sol2hatch)
if you are charging it, only if you putting an *** load of spray on top of it, would i worry.
250 wheel is more than attainable on stock sleeves.
i made 230 on 9:1 internals on a b16 with 7psi and an fmu 5 years ago.
the 11.5:1 with boost is all in the tuneup.
250 wheel is more than attainable on stock sleeves.
i made 230 on 9:1 internals on a b16 with 7psi and an fmu 5 years ago.
the 11.5:1 with boost is all in the tuneup.
09-22-2006, 01:03 PM
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Re: when to consider sleeving a motor... (boostedcivicsir)
no, no spray, this is an AutoX car. Maybe once or twice to the track just to see the number, but AutoX is my thing. So if 250whp is completely safe on a good tune, what number would be pushing it? How about 300whp?
09-22-2006, 02:38 PM
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The only problem would be in the tune as the only solution would be as well.
With 11.5:1 compression, your detonation window is significantly smaller and one tank of bad gas could kill it. That being said, 11.5:1 boosted 300 whp could be just as easily attained as it could be on 10:1 or 9:1, BUT, a change in temp and a crappy tank of gas with a bit of water in it and it's bye bye sleeve because of how much easier than motor will detonate than a lower compression motor. It would have to be a VERY conservative tune on the timing.
With 11.5:1 compression, your detonation window is significantly smaller and one tank of bad gas could kill it. That being said, 11.5:1 boosted 300 whp could be just as easily attained as it could be on 10:1 or 9:1, BUT, a change in temp and a crappy tank of gas with a bit of water in it and it's bye bye sleeve because of how much easier than motor will detonate than a lower compression motor. It would have to be a VERY conservative tune on the timing.
09-22-2006, 09:07 PM
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I guess it would probably be easier to just get a little bit lower compression pistons. Better safe than sorry. How about 10:1, would that be a better choice?
Edit: and are there any good resources for superchargers, general info, how-to artictles, that sort of stuff, I searched on here some, and didnt find very much, lots of turbo stuff, but not so many SC threads
Edit: and are there any good resources for superchargers, general info, how-to artictles, that sort of stuff, I searched on here some, and didnt find very much, lots of turbo stuff, but not so many SC threads
09-22-2006, 09:39 PM
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Re: (SiKid86)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SiKid86 »</TD></TR><TR><TD CLASS="quote">You are probably gonna be better off with a turbo that is properly sized. Not this dyno queen **** that you find here. 
</TD></TR></TABLE>
what are you talking about?
</TD></TR></TABLE>what are you talking about?
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09-23-2006, 06:39 AM
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Re: (11SEC CIV)
I don't really think sol2hatch got the answers he's looking for.
Stock sleeves have been proven to hold-up to a ton of power, but it all comes down to who is tuning.
For your goal of 250whp, sleeving is not really neccessary being you have a solid tune. I suppose you could say sleeving is more of a "safety margin" now, on anything below 650 to the wheels. Needless to say, I will have my motor sleeved for my build for peace of mind.
For the purpose you stated of the car, I would drop the compression a bit, and look into a super efficient setup. JRSC or something like a 28rs would be sick for auto-x.
Stock sleeves have been proven to hold-up to a ton of power, but it all comes down to who is tuning.
For your goal of 250whp, sleeving is not really neccessary being you have a solid tune. I suppose you could say sleeving is more of a "safety margin" now, on anything below 650 to the wheels. Needless to say, I will have my motor sleeved for my build for peace of mind.
For the purpose you stated of the car, I would drop the compression a bit, and look into a super efficient setup. JRSC or something like a 28rs would be sick for auto-x.
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