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Old 08-18-2011, 09:19 AM   #61
iceberg65
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well then all you have to do is drop the 11.5 compression ratio idea your looking for extreme goals using stock components.

Give the head a mild to moderate decking, install your svt pistons/rods and figure out what you end up with for compression after making sure clearances are good.

stick with what people have had success with on stock components.

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Old 08-18-2011, 11:07 AM   #62
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Where's that fun in that? No one else has made decent power on the JRSC.

And Brad there was no math involved. Just a guess.
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Old 08-18-2011, 12:13 PM   #63
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I'm not saying you cant go for it; I'm saying its a bad idea using stock parts. You would be hard pressed to see 10:1 on stock pistons/rods be them svt or zetec. From what I've read the compression bump that the svt gets is more due to the heads combustion chamber then anything else. I can see your numbers being a long term goal with new internals.
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Old 08-18-2011, 01:22 PM   #64
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Wont matter what you do the jrsc will never make big power , it just isnt in its blood to do

If you raise the complession that means droping the timing to allow unless you going to run 105-110 octane and I dont mean e85

I am being straight here with you , you will spend more to make less , you port the head you loose boost , you go big exh you will loose boost and your spinning the SC as much as you can now

Another thing your hitting what close to 200 deg IAT and the problem will only get worse the more you try to make power with it

It isnt that no one has done big power with the jrsc as much as many have tried and it wouldnt do it and a few dumped a ton into trying

But in the end you will have to find this out for your self and after all it is your money to spend freely

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Old 08-18-2011, 01:50 PM   #65
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Yeah, I won't be overspinning the blower like I am now, and I will be running water/meth. I know I will never see big power, I just want decent power. I can't get 200whp as it is and thats pathetic. My buddy had a Prelude with a jrsc making 270whp.

I really won't be spending much either. $200 for injectors, $200 for w/m, $50 to deck the head, $75 for the blower rebuild parts, and a few other small things. All the port work will be done by me, and the M62 fab work will all be done by me. I want to attepmt to level the playing field and if I can break 300 without dumping a lot of money into it, I'll be more than happy.

And I don't have access to race fuel here.
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Old 08-18-2011, 01:53 PM   #66
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break 300hp with a supercharger on a zetec? eeeehhhhhhh
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Old 08-18-2011, 02:23 PM   #67
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Its a theory
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Old 08-18-2011, 02:59 PM   #68
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I would be surprised to see you break 250. Dont take that the wrong way; I would like to see your setup prove us wrong.... I just don't see it happening.

The theoretical limit of the M62 blower spinning at 14k rpm will push around 450cfm which could make around 300hp on average. It takes about 35hp to drive the supercharger at 14k rpm. That brings the aprox. max power output to around 265 before any drive-train loss.
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Old 08-18-2011, 08:05 PM   #69
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remember, he's gonna be running spray too!
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Old 08-18-2011, 08:16 PM   #70
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Most likely w/m, as I can build a diy kit pretty cheap.
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