Another NOS Question

[03MERCMARAUDER]

Was curious how well the stock block would hold up with a 125 shot? Of cousre the tune would be a bif factor. I plan on running a mix of 104 when on the bottle. You think 125 is too much??

Joe

[LVMarauder]

It wouldn't under repeated use. Sure 104 octane and a conservative tune will help avoid detonation but thats a big shot for our pistons. Any detonation at all would probably do lots of damage. I hear 75 is ok for frequent use with the right tune. 100 for best et at track occasionally. 125 if you have something to prove and want to risk it. I always run 104 when I know ill be using my Zex, that little difference in pump cost isnt worth an engine.

[03MERCMARAUDER]

Ok, I was origially looking at going with a 90 shot and I guess I will stay with that. Funny thing is i have a freind that thinks the rauder wont be a match for his SS camaro. I think the NOS with a 3000 stall along with the mods in my list should be enough to show him the 4 door isnt that slow lol. Thanks for the answering my question.

Joe

[LVMarauder]

3000 stall will get you off the line, the juice will take you the rest of the way. I dont know what SS's run but I would expect your time would be 13.6-13.1.

[DEFYANT]

I was a group purchase away from NOS. I am very happy I went w/ the S/C. Your sip shows a Trilogy as a future mod. I suggest you go that route.

But as you stated, it is all in the tune.

[03MERCMARAUDER]

Yeah after driving Bobs car I was hooked big time lol. Really wish I could have seen yours. I really want to hear a Rauder with kooks.Only reason I have a bottle kit is cause I got a rediculous deal on it. Fgiure I could use it to satisfy my craving till I get the cash together for a triolgy. I might even leave the bottle on it and step the shot down.

Joe

[Hotraudmerc]

Well I hope no one minds I hijack this thread with a question but here goes.

I have been thinking of doing a NOS set up on my 03. My overall plan for my Marauder is 4.10s, Lidio tune, CAI and NOS. I have 2 other projects and it makes spending money on a SC less likely. I live at 5280 feet in the Denver area and was wondering if a 90 shot is too much for a reliable power boost and would I need to run 104octane. I really just want the NOS for a little extra now and then. How much power should I expect with 75 or 90 shot boost? Any responses would be welcome.

I really just want to get the MM in the 13's if possible with out big bucks and at Mile High Altitude.

Keith

[LVMarauder]

13's is a realistic and achievable goal with your plan. I always use 104 when I hit the button regardless of altitude. 75-90 is a great " whenever you need to" power setting , save the bigger ones for the track ( not much bigger though). You will probably want to dyno tune your MM while using NOS as I am guessing your AF ratio will need tweaking at you hypoxic altitude. You can fine tune the power on the dyno as well. Its all in the tune.

[jstevens]

LVMarauder, what size shot are you running?

I think you can run a 100 shot on these engines all day long, basically.

[LVMarauder]

Adjustable 60-150 if i want with metering jets. I keep 75 in when im not at the track. My reason for doing this isn't our block , which obviously can handle quite abit ( i.e. Trilogy #1 that lasted pretty long considering how it was abused) but our hyper-crapy pistons. Im pretty confident they will crumble into paper weights the second you are too lean under load, misfire or have bad gas ( as someone posted here today , NO SC , NO NOS, just bad gas cracked his #8 piston, *cough* *cough* too lean). Now maybe 100 is safe and 150 is more like our limit but do you really want to find out?

[Hotraudmerc]

Thanks for the replies guys.
From what I understand at higher altitudes you can run lower octane. Obviously I would run 104 boost with the NOS but with only a 75 shot can you run pump type 91 or 93 octane? They for the most part only sell 91 in the Denver area for high octane and 89 is the mid. I have run the mid grade twice without detonating but actually get better MPG with the 91 and just run 91 anyway. I am guessing you guys use octane boost to get the 104 octane.

[jstevens]

Hotraudermerc,
Not sure about you, but in Michigan I can get 93. My car is being set up with a 100 shot and will run 93. I will have to ask if there is a fuel switch to address the lean condition.

LVMarauder, I agree that I don't want to find out the bad way.

[Hotraudmerc]

Your set up seems very similar to what I want to do. What kind of HP gain do you expect with the 100shot? Is your car being set up for wide open throttle trigger or are you going to push a button as needed?

NOS for me is the way to go.

[03MERCMARAUDER]

Thanks for the replies guys.
From what I understand at higher altitudes you can run lower octane. Obviously I would run 104 boost with the NOS but with only a 75 shot can you run pump type 91 or 93 octane? They for the most part only sell 91 in the Denver area for high octane and 89 is the mid. I have run the mid grade twice without detonating but actually get better MPG with the 91 and just run 91 anyway. I am guessing you guys use octane boost to get the 104 octane.

For the 104 guys go with 104 race fuel. From what I have learned and read its one of the best insurances you can do when running the bottle or high boost levels on your rauder.

Joe

[fastblackmerc]

My son's '99 SS did 13.01 at 109 bone stock, now it does 12.09's on motor and 11.56's with a 75 nitrous shot (Nitrous Express wet kit) on pump gas, slicks and skinnies. Only mods are 4000 stall converter, cam, long tube headers, 3.73's, exhaust cutout, and a built automatic tranny.

[Hotraudmerc]

I guess the issue with buying race gas 104 instead of mixing it is the fact that you will need to time it with an empty tank each time you want to run with it. The bottle mix can be done at anytime. Are there documented issues with the mix? I would hate to be a statistic.

[jstevens]

Your set up seems very similar to what I want to do. What kind of HP gain do you expect with the 100shot? Is your car being set up for wide open throttle trigger or are you going to push a button as needed?

NOS for me is the way to go.

I expect 100 hp and tq. Not sure really. I'm having a WOT switch. Tuning will be done by Alternative Auto.

[03MERCMARAUDER]

I was going to go with a WOT switch but I am gonna go with a window switch instead, that way i can set the rpm i wish the bottle to come on and the rpm for it to shut off. Doing that I think i wont have the rpoblem of blowing the tires loose as I would with a WOT switch

Joe

[MikesMerc]

I think you can run a 100 shot on these engines all day long, basically.

Easily. It's all in the tune. Run some 93 or better, and a nice safe AF ratio under the spray and a 100hp shot would be fine.

Set up is also important. Stick with a WOT switch.

[Hotraudmerc]

Some good information. Do you really break the tires loose with Nitros running down the track?

Anyway I posted some questions on another forum regarding High Octane fuels. At what level of Nitro do you need to run 104 and not be able to run 91 or 93 as in other states besides Colorado? Can I run 91 at 75 or 90 shot Nitro? I realize this may be a direct question for local Colorado users because traditionally you can lower octane fuels around here without detonating. At least with a normally aspirated engine.

[LVMarauder]

I roll into my launches, the pedal is all the way down by about a car length after the christmas tree, I run 255 KDW 2 in the back at 28 psi and haven't had too many problems with traction . If I dropped the hammer from the green light im sure I would loose traction .

[03MERCMARAUDER]

What kind of times are you seeing runnin the bottle on your merc?

Joe