krusty

when running a 150 shot of gas is 11:1 comp ok or should the comp be dropped

conan

Compression ratio does not effect the use of NOS. Just make sure you have good fuel supply so as to not run lean, back ignition timing off a few degrees and do not over-rev it. If in doubt, speak to Rob Madden from OzNos. I found him to be very approachable and helpful. Good luck holding on with that much. I have only had the guts to run 100hp of gas and it dropped my times to 10.9 over the quarter.

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BA GT-P owner and loving it!

krusty

yeah i didnt think it would hurt but a freind said last night that i should drop it i just couldnt see why it would effect it ,

what type of nitrous set up do you have , i have a pro shot fogger direct port and its surposed to be on its lowest setting 150 hp , to make matters worse its going into a 1000 kg hotrod theres pics of it in the cleveland section under WHATS YOU CLEVELAND IN

Racer

Nitrous loves compression. I don't know where the phallacy came from that you need low compression. It seems to be wide spread everywhere. Most serious nitrous race engines are 15:1 comp plus.

The only thing you need is high octane race fuel. I used C16.

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Old School Cortina: 9.87@138
The "other" car: 10.41@127

krusty

its funny every body i tell that im running nitrous says that it will kill the engine yet people have been running it for years with no problems so it cant be that bad ,

what type of setup are you using and how much extra hp are you running

Racer

I was running 250hp through a plate, and did so for many years without a single problem. Its all in the tune up and strengthening the engine where it is needed. The 150hp you intend to use should present no problems if set up correctly.

I have mates running 450hp plus, and they have not had "nitrous" related problems as such, but have damaged their engines through the sheer amount of power they were making. It tends to go with the territory when making 1000hp plus...

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Old School Cortina: 9.87@138
The "other" car: 10.41@127

krusty

yes that would pose a few reliability issues running 1000hp ,
i will be happy with 500hp ,
what type of fuel pump do you have supplying the nitrous ,

what tuning should i do, is retard the timing and run colder plugs enough

conan

I have an OzNos plate system and run anywhere between 50hp up to 150hp. I run premium unleaded 96 octane with 10.4:1 cr and alloy heads. Timing is 36 degrees max.

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BA GT-P owner and loving it!

krusty

conan do you run a seperate fuel pump for the nitrous and did you use colder plugs

conan

No and no. My fuel system is plenty adequate for the requirements, but if in doubt, upgrade pump(s), or size of fuel lines.

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BA GT-P owner and loving it!