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what do I need for Nitrous while motor is out?

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Old May 20, 2002 | 03:12 AM
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Default what do I need for Nitrous while motor is out?

Ill be pulling my engine, to put GM 186 heads on (p&p), erson 1.5 roller rockers &pushrods, performer manifold (not a rpm), flow tech headers, not yet sure what cam to use (268H?).

I dont have the budget to make a fast, strong n/a engine, so I'd like to use nitrous on the setup above. What gaskets etc. should I buy? basically what should I do while everything is apart with nitrous in mind. btw the bottom end will have to stay stock :(
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Old May 20, 2002 | 01:32 PM
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Default Re: what do I need for Nitrous while motor is out? (Blues77)

How much NOS do you want to run. There are a lot of things that need upgraded before gaskets to run big shots. Since your bottom end is stock you should keep the NOS in the 150 shot range. Just get some good gaskets, Fel-Pro are very good.
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Old May 20, 2002 | 02:12 PM
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Default Re: what do I need for Nitrous while motor is out? (Blues77)

I'd like 100-150. Will my bottom end hold up? What will my comp. ratio be with the setup Im running? ( is there a formula to figure that out?) thanks

btw..I see the felpro head gaskets are around $30 compard to the Milodon and some other hardcore ones that get to be around $100. Is there an advantage to going with these (copper ones)?
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Old May 20, 2002 | 03:40 PM
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Default Re: what do I need for Nitrous while motor is out? (Blues77)

I do not think you will have a problem with a 150 shot. I would give the NOS maker of the system you are going to use a call and run things by them. You do not want or need copper head gaskets.
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Old May 22, 2002 | 11:09 AM
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Default Re: what do I need for Nitrous while motor is out? (69 N.O.X. RATT)

The copper gaskets are better in that they provide a better seal and they are re-usable unlike paper gaskets.
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Old May 22, 2002 | 03:43 PM
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Default Re: what do I need for Nitrous while motor is out? (Corey 68)

Copper gaskets can cause problems for the average lay person to run on the street. I know more than one guy who has had problems with them. There is no need for them on a mild NOS street motor.
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Old May 23, 2002 | 01:57 PM
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Default Re: what do I need for Nitrous while motor is out? (Corey 68)

I am forced to run copper gaskets on the street but I would not recommend them for everyone. They tend to seep. I like a good composite gasket. If you run 100 HP shot, I also run them square, same jet gas and nitrous around .052 diameter you will not have a problem. No special pistons, no dedicated gas line, pump. NO different plugs or timing. At the 100 hp level nothing gets hurt and the jump in noticable horsepower and quarter mile times is significant. Jumping to 150 HP gets risky and the jump from 100 to 150 is not that noticable.
Run a stock engine, 100HP nitrous and you will be solid in the 13's.
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Old May 24, 2002 | 12:26 AM
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Default Re: what do I need for Nitrous while motor is out? (Blues77)

Keep in mind that using nitrous isn't cheap. It won't take many runs, even with 100hp shot, before it's time for a $30 refill. Also keep in mind that a normal nitrous setup adds power only under wot conditions. Even though the same money spent elsewhere might not provide as much power, it can provide power that you can use and enjoy all the time. The ads for nitrous tend to avoid mentioning that either your timing has to be set back, which results in sluggish performance when you are not at wot, or that you spend more money for an ignition box that can adjust timing when the nitrous is activated.
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Old May 30, 2002 | 02:36 PM
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Default Re: what do I need for Nitrous while motor is out? (Blues77)

fel pro makes a composit gasket with o-ring cylinder sealing rings which has worked well for my blown 350 w/150 NOS shot

I'll help you with part number if needed

Stock crank / rods should be fine stock but forged pistons a wise choice

Use fuel pressure switch to deactivate NOS if fuel pressure drops below 5 psi

Keep an eye on plug readings until tuned ~ alum particles sign of detonation

MSD boost timing retard device works well to control timing while in NOS land

good luck.....have fun

:yesnod:
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