so, I picked up a 600 hp NOS system

1086 Views 8 Replies 4 Participants Last post by jangles, Jul 22, 2009

terrible_buddhist

Discussion Starter · Jul 22, 2009

one of those deals with the jets going into each port. LOOKS really cool...but if I ever hit the button I would nagasaki my engine in a hurry.

is there any way to 'dial these down' a few hundred horse?

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Boat 405

· #2 · Jul 22, 2009

They sell lots of different sizes for the fuel jets and n20 jets. Can jet it any hp you want. probably 100 to 600 hp.

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stix818

· #3 · Jul 22, 2009

terrible_buddhist said:
one of those deals with the jets going into each port. LOOKS really cool...but if I ever hit the button I would nagasaki my engine in a hurry.

is there any way to 'dial these down' a few hundred horse?

Order smaller jets!!! According to Holley's website a 100hp for almost every fogger system start around .018" and you can go smaller. Of course that's just a possible starting point. I run a system similar to yours and only have approximately a 125 shot on it and I'm 22 on NOS and 18 on Fuel at 5.5 PSI. You can order them through Jegs.

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terrible_buddhist

Discussion Starter · #4 · Jul 22, 2009

do you put it before the nozzles? or does each nozzle need a jet?

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stix818

· #5 · Jul 22, 2009

terrible_buddhist said:
do you put it before the nozzles? or does each nozzle need a jet?

Just before the nozzle (inserted in the top of the nozzle). There should be two nuts attached to the Nozzle, typically the top is the NOS and the bottom is the fuel (follow lines back to solenoids to verify). Under these nuts you'll find a flare jet. If you look at the picture the jets are under the blue and red anodized nuts. Not sure if that helps but I hope so. I'm sure Chris/CS19 will chyme in and straighten us all out!! He knows how this stuff works real well and has helped me in the past.

See less See more

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terrible_buddhist

Discussion Starter · #6 · Jul 22, 2009

stix818 said:
Just before the nozzle (inserted in the top of the nozzle). There should be two nuts attached to the Nozzle, typically the top is the NOS and the bottom is the fuel (follow lines back to solenoids to verify). Under these nuts you'll find a flare jet. If you look at the picture the jets are under the blue and red anodized nuts. Not sure if that helps but I hope so. I'm sure Chris/CS19 will chyme in and straighten us all out!! He knows how this stuff works real well and has helped me in the past.

perfect.

now the trick is going to be getting it to inject into boost. Not that worried about it though, that is going to be an off season project.

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jangles

· #7 · Jul 22, 2009

stix818 said:
Order smaller jets!!! According to Holley's website a 100hp for almost every fogger system start around .018" and you can go smaller. Of course that's just a possible starting point. I run a system similar to yours and only have approximately a 125 shot on it and I'm 22 on NOS and 18 on Fuel at 5.5 PSI. You can order them through Jegs.

What is maximum compression for running nitrous?

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stix818

· #8 · Jul 22, 2009 (Edited)

jangles said:
What is maximum compression for running nitrous?

I'm not real sure. CS19, Big John, etc.. would now a lot more than me. I'm a N/A guy and just started playing with NOS. We are only using enough to run the number which right now is around 100-125HP at 14.25:1 CR. I found this over at yellow bullet that discusses this a little. Looks like the more Compression the smaller the tuning window. http://www.yellowbullet.com/forum/showthread.php?t=146329&highlight=MAX+compression

Let me know if you have problems viewing it. I browsed through a couple post and it seems it covers your question pretty well!!!

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jangles

· #9 · Jul 22, 2009

Thanks for the link but those guys are all talking ratios. I need actual pounds as the boat that I have was not built by me and the guy is pissed cause his GF sold me the boat and won't tell me shit. I took a compression test and it has 200 lbs more or less on all cyls. It has a crane cam and Merlin Cast iron heads. Thats all I know, I don't even know the actual displacement.
jangles

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