turbo fast spool for hight speed trail - Club700XX - Honda TRX700XX Forum
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post #1 of 17 Old 02-20-2011, 02:38 AM Thread Starter
 
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turbo fast spool for hight speed trail

low compression piston 8.5 to 1, gt12 turbo , external waste gate, megasquirt controled with a map, intercooler. You know the part used on the polaris iq turbo (snowmobile) 140hp stock and 750cc. It just crazy the way that sled pull down low to 8000 rpm.The hardest challege is way get a ignition with a trigger sensor..

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post #2 of 17 Old 02-20-2011, 03:35 PM
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I would run a stock replacement piston or even an 11:1 piston. This will help on the spool up and make more power everywere.

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post #3 of 17 Old 02-20-2011, 03:40 PM
 
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i will have s stand alone system tested here in the next week or 2 with the raptors i was thinking of doing something with the xx but they are around $1200 a piece so its going to price itself out of most peoples budgets


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post #4 of 17 Old 02-20-2011, 07:37 PM
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That's actually not that bad of a price. Would that be for just the turbo or at your cost or would that be a kit price?

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post #5 of 17 Old 02-21-2011, 06:49 AM
 
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oh no thats only the ecu most people generally sell turbo kit for $1800-$3500 i dont have much interest in it at the moment though. The ecu would be more like the vortex just much deeper its more like a motec it will allow you to do everything and anything for the most part, configurable inputs give you a ton of options. It would work well for a turbo


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post #6 of 17 Old 02-21-2011, 09:06 AM Thread Starter
 
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High comp piston don't like hight boost, don't know for an atv but my car got 9.5:1 and at 15 lbs it start to knock with a too aggressive ignition map. But i'm using 91 pump gas.

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post #7 of 17 Old 02-21-2011, 09:46 AM
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Quote:
Originally Posted by Brokenbones View Post
High comp piston don't like hight boost, don't know for an atv but my car got 9.5:1 and at 15 lbs it start to knock with a too aggressive ignition map. But i'm using 91 pump gas.
with 15psi and 91 fuel im guessing anythnig would knock ever more so if not intercooled well enough, high comp pistons spool turbos nicely, especially with a large overlap cam, but arnt as efficient as a high lift low overlap cam, 11:1 should work fine in a 700xx running on 98 fuel, just adjust ignition maps to suit, it just depends on how much boost you want and what kind of riding your going to do

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post #8 of 17 Old 02-21-2011, 10:33 AM
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Alot 700 Raptors are running 11:1 pistons with boost because of this.

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post #9 of 17 Old 02-21-2011, 12:48 PM
 
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My Eclipse had 8.5:1 compression and I ran 19lbs. on pump gas. That car was a ripper, haha. If you want to run pump gas so you can still hit the trails I'd suggest stock compression with lower boost levels or finding that lower compression piston. If the turbo is matched properly to the motor it should spool just fine.


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Last edited by xx700xx; 03-11-2011 at 10:14 PM.
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post #10 of 17 Old 02-21-2011, 02:05 PM Thread Starter
 
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Gt12 turbo should be fine ???

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