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G5x3 on a 112 or 114 for best n/a and spray setup?

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Old 03-01-2005, 01:35 AM
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Default G5x3 on a 112 or 114 for best n/a and spray setup?

Hey guys,

G5x3 on a 112 or 114 for best n/a and spray setup? Now I hear they both clear. Whats a better setup for me for on and off the bottle. The ulimate goal is to have some afr 225 heads and a forged lower with a big shot. But for this year at least cam only.

Was looking at the g5x4 also but seems like it may be TOO big for a car that see's the street more than the track.

Thanks
Old 03-01-2005, 01:36 AM
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How much do you plan on spraying?

Less then 175 shot I would get the 112 becasue the power band will kick in sooner.
Old 03-01-2005, 01:43 AM
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I, personally am going with the 114. Im guessing either one would be okay. Maybe the 112 would get you in the band quicker, like mentioned above.
Old 03-01-2005, 01:45 AM
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i ordered my f14 today and wanted 112 for my 100-150 shot but allan and the other dude stressed getting it on a 114 lsa, they said there was very very lil differnce b/t the 112 graph and 114 graph on motor.. later talked to my dyno guy, c.a.m. motorsports, and he said i was def. right in getting it for a 114lsa for nitrous..
Old 03-01-2005, 10:00 AM
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so it looks like 114 is the way to go.


You guys think the g5x4 would be too much for a street car that see's the track?

Been hearing this cam is WILD on spray.
Old 03-01-2005, 10:03 AM
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i've always heard the higher lsa 114 is better for nitrous.
Old 03-01-2005, 10:35 AM
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It would seem like the higher LSA (less overlap) the better for spray. Overlap would allow some of the N20 to get out of the combustion chaimber unburnt (thoretically atleast)....But from what I have read N20 Cams are more of an art than a science.
Old 03-01-2005, 11:17 AM
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As mentionned above, N20 on a 112 or 114 lsa will work for both till ~ 150 wet shot. Nothing to do with the powerband but much more to do with overlap.
Also more overlap will mean more unburned fuel contamination in exhaust gases and mix that with more oxygen from nitrous you'll have some combustion occuring upon exiting the head, right in the header primary which in it's turn causes shockwaves back in the head.
Old 03-01-2005, 03:07 PM
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Originally Posted by PREDATOR-Z
As mentionned above, N20 on a 112 or 114 lsa will work for both till ~ 150 wet shot. Nothing to do with the powerband but much more to do with overlap.
Also more overlap will mean more unburned fuel contamination in exhaust gases and mix that with more oxygen from nitrous you'll have some combustion occuring upon exiting the head, right in the header primary which in it's turn causes shockwaves back in the head.
Excuse my lack of technical knowledge, so does this mean later on when I spray more than 150wet is the 112 better or the 114, or something else?
Old 03-01-2005, 03:13 PM
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'nitrous cams' really only come into effect until 250 and up shots.

The G5X-4 is not a 'nitrous cam' but it goes quicker and faster than the 'nitrous cams'
you are describing.But a G5X-3 on a 114 is more of a 'streetcam' if that makes sense.
You will run quicker and faster on motor AND on spray with the X-4.
I've already done the research for you.
Old 03-01-2005, 03:24 PM
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Originally Posted by 01-Z
'nitrous cams' really only come into effect until 250 and up shots.

The G5X-4 is not a 'nitrous cam' but it goes quicker and faster than the 'nitrous cams'
you are describing.But a G5X-3 on a 114 is more of a 'streetcam' if that makes sense.
You will run quicker and faster on motor AND on spray with the X-4.
I've already done the research for you.
Thanks bro, you have been helping me alot!
So final question. Do you think for my situation being more of a street car, is it worth going with the g5x4 with the trade off being less drivability compared to the g5x3.
Old 03-01-2005, 03:36 PM
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You generally don't want excessive overlap in a nitroused car, because cylinder pressure is bled off, resulting in a loss of NOS efficiency. I would go with a wider separation angle and keep the duration within reason.
Old 03-02-2005, 02:43 PM
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you wont bleed off much cylinder pressure with a nitrous motor with overlap




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