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  #31 (permalink)  
Old 01-21-2013, 09:10 AM
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Quote:
Originally Posted by prostreet6t9 View Post
Trophies are pretty easy to come by in Bracket racing.. The "heads up" classes have the fastest and best cars.
i don't have any bracket racing trophies.

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  #32 (permalink)  
Old 01-21-2013, 09:14 AM
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re comment

Quote:
Originally Posted by F-BIRD'88 View Post
Next time, if you want to hit a motor real hard with big big shots of nitrous
on 92 octane, build the engine with a low low compression ratio.
Just like a blower motor.
Stay within the laws of physics and it will make a ton of reliable power
and not come unglued.


somewhere around here
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Old 01-21-2013, 05:00 PM
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Originally Posted by F-BIRD'88 View Post
i don't have any bracket racing trophies.
Heads up class?
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  #34 (permalink)  
Old 01-21-2013, 05:08 PM
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Originally Posted by CJAY View Post
So I dont need 1.5 gal cell....just run straight from my primary cell another fuel pump and use race gas...pretty simple I guess.
okay...so when i use nitrous put race gas in and when i want to drive it on the street then what? can this nitrous race gas motor run on pump gas??
this is what i really want to know
If you not Familiar with using the bottle start out small and work your way up. My buddies in Texas are big into it and have great luck and really haul the mail. Even the best nitrous guys have cough's now and then and it's not pretty when it happens.
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Old 01-22-2013, 06:35 PM
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Quote:
Originally Posted by prostreet6t9 View Post
If you not Familiar with using the bottle start out small and work your way up. My buddies in Texas are big into it and have great luck and really haul the mail. Even the best nitrous guys have cough's now and then and it's not pretty when it happens.
"cough's" like detonate?? ya thats what im planning on doing.. small shot see where it goes im content with my setup already so a nitrous shot is just for extra fun..lol thanks
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Old 01-22-2013, 06:43 PM
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Quote:
Originally Posted by F-BIRD'88 View Post
Next time, if you want to hit a motor real hard with big big shots of nitrous
on 92 octane, build the engine with a low low compression ratio.
Just like a blower motor.
Stay within the laws of physics and it will make a ton of reliable power
and not come unglued.
ya i will my next build for sure!
i just had to deal with what i had already built...so i was thinking nitrous would be my best bet for low buck hp...is the 100hp powershot fixed plate system good? or should i just get adjustable plate system?
Thanks for the tips
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Old 01-22-2013, 06:58 PM
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Quote:
Originally Posted by CJAY View Post
"cough's" like detonate?? ya thats what im planning on doing.. small shot see where it goes im content with my setup already so a nitrous shot is just for extra fun..lol thanks
Detonate...yes its a bad deal. Most of the problems I've seen where caused by a fuel pump issue. Very important to build a "fail proof" fuel system. If your fuel pressure varies you will melt parts. A stuck solenoid will cause thing to get pretty exciting also.
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Old 01-22-2013, 09:13 PM
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Quote:
Originally Posted by F-BIRD'88 View Post
Next time, if you want to hit a motor real hard with big big shots of nitrous
on 92 octane, build the engine with a low low compression ratio.
Just like a blower motor.
Stay within the laws of physics and it will make a ton of reliable power
and not come unglued.
I was thinking of what you were saying about low compression ratio i can just get low compression forged pistons and new rings... Im putting the new crank i got forged eagle 3.48 stroke and k1 forged rods press pin tho...do u know of any good buget nitrous low CR piston for my build?
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  #39 (permalink)  
Old 01-23-2013, 12:40 PM
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Why is it so hard to get your head around using good high octane fuel that is up the the task?
if you want some extra power with nitrous on your 10.60:1cr motor.
Get a adjustable kit 150- to 300hp type and start with the 150hp level and learn how to use it and go fast.
making full use of it for the full 1/4 mile.

Get some 110+ octane unleaded and use it as required based on the N20 shot.
On your motor I would not use less than a 100 octane brew.

When you get the 150hp level all figured out and are makeing good power with it, you can step up the program if you want. Step up the fuel octane level accordingly and you will have lots of reliable fun.
Fuel octane is your friend.

If you want to pound it with 350-450hp+ shot use straight 116+ octane race gas.

The 100 hp powershot is a tease. The octane requirements of the various systems available are very clear in the guidelines. And there is no free lunch.

When I pound a low compression ratio engine with way too much nitrous, on pump gas I keep the parameters well under control. Like controlling fuel pressure within 1/4 lb , bottle temp and very conservative timing, camshaft, launch/nitrous engagment rpm.. etc Detonation must be avoided. You want a race converter that allows you to launch at a high rpm when hitting it real hard.
Never hit with a big shot at a low rpm or @ less than full throttle. (thats how connecting rods bend) The bigger the shot, the higher the minimum rpm.
I don't use a "controller" or multi stage. But do closely control the exact nitrous engagement rpm at launch.

High engine compression ratio I always use good gas, when using nitrous.

I have never hurt a motor on nitrous and I hit them real hard even with cast pistons. (a lot harder than most say you can)
{low engine compression ratio, I always sneak up on the tune up}
But you must have tight control of the parameters. As stated start at the low level shot level and learn to go fast.
Do not skimp on fuel octane especially during the learning curve. Do not skimp on the nitrous's or the engine's fuel system.
and do not piggy back.
That does not nessessairlily mean expensive. The total system on my car is 900+ HP capable and did not cost a lot.
I'm not rich either.
You will have more fun...

Last edited by F-BIRD'88; 01-23-2013 at 01:03 PM.
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  #40 (permalink)  
Old 01-27-2013, 10:13 PM
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[QUOTE=F-BIRD'88;1637971]
The total system on my car is 900+ HP capable and did not cost a lot.
I'm not rich either.

Now thats some juice
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