Compression & Nitrous...

SleepingSol

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I'm currently working on a fully built N/A b18c1. My question is how high of a cr is safe to run a 75 shot? I'm planning on running 12:1-12.5: & e85 if that makes a difference. Is that cr too high?
 

sohclubkid

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I'm currently working on a fully built N/A b18c1. My question is how high of a cr is safe to run a 75 shot? I'm planning on running 12:1-12.5: & e85 if that makes a difference. Is that cr too high?
compression makes no difference on the size of the shot you can use.
it all depends on if the fuel/ nitrous mix is correct (pretty much how well its tuned) to keep bad stuff from happening.
 


AllTracCelica

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Wouldn't say compression doesnt matter. There is a point where stuff breaks under to much nitrous. Good tune is best thing for it. Are you going direct port nitrous? Or fogger?
 

sohclubkid

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Wouldn't say compression doesnt matter. There is a point where stuff breaks under to much nitrous. Good tune is best thing for it. Are you going direct port nitrous? Or fogger?
well, then it breaks from the nitrous... not the compression.
 


SleepingSol

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Wouldn't say compression doesnt matter. There is a point where stuff breaks under to much nitrous. Good tune is best thing for it. Are you going direct port nitrous? Or fogger?
Direct port since i'm going to be running itbs
 

SleepingSol

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81.5mm high comp pistons, eagle rods, acl race bearing, ported/polished head, stage 3 cams unsure of brand yet, twm 52mm itbs, 1000cc injectors, walbro fuel pump, race header, and 3" exhaust
 

SleepingSol

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the 1000cc's arent for the nitrous, they are for the higher flow rate of e85
 

sohclubkid

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since you are doing a full build, just make sure the rings are quality, and are gapped to a spec for nitrous (i forgot if its looser or tighter for nitrous) and i say you can run a 125 shot possibly more without problem, giving that the nitrous system you have can support that aka correct ammount of N20 and fuel... and the tune must be good as well.

just my knowledge from researching nitrous for my car.
 


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