Nitrous

[Clint S.]

A couple of general rules I have learned over the years about turbocharging
and nitrous .
1) Make sure the fuel pump and injectors are big enough, fuel pump is often
overlooked use a fuel pressure guage to confirm
2) O-ringing block and buying a stronger head gasket are usually strengthing
the weak links . The way I look at it they are like fuses, cheaper to blow
them than a set of pistons, rods or junk your entire motor . The oringing
trick allows a little more OOPS detonation while tuning, but when it blows
it blows big time (Others may disagree), I say avoid detonation all together
. For really high HP engines o ringing must be done
3) NOS has many advantages over turbo including instant response, major
cooling effect and combustion chamber stabilization . Get the NOS recipe
wrong and that instant response now turns your motor to instant junk . I
personally would not try to computer control NOS due to the fact that
mistakes will more than likely cost you an engine .
Use a small shot first and tune engine, get your feet wet .
4) Proper timing controll is often overlooked, it is a major key factor to
keep you engine from detonating  . TIMING IS CRITICAL

I hope I didn't turn you off NOS, it is very effective and cheap . Buy an
NOS book on the shelf and research it .

400lbft of torque at 2000 rpms is not going to happen, NOS is not to be used
at low rpms .

-----Original Message-----
From: DIY_EFI Digest <DIY_EFI-Digest-Owner at efi332.eng.ohio-state.edu>
To: DIY_EFI-Digest at efi332.eng.ohio-state.edu
<DIY_EFI-Digest at efi332.eng.ohio-state.edu>
Date: 17-Dec-99 3:20 PM
Subject: DIY_EFI Digest V4 #702


>
>DIY_EFI Digest        Friday, December 17 1999        Volume 04 : Number
702
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>In this issue:
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> Nitrous Controler
> server status update
>
>See the end of the digest for information on subscribing to the
>DIY_EFI or DIY_EFI-Digest mailing lists.
>
>----------------------------------------------------------------------
>
>Date: Fri, 17 Dec 1999 11:00:31 -0500
>From: Rodney_L_Wiggins at keybank.com
>Subject: Nitrous Controler
>
>Tristan,
>     I do not reccomend trying to make 400lb/ft of torque @2000 RPM with
Nitrous
>on a turbo 4. Unless you have a substantially upgraded bottom-end, an
o-ringed
>head individual foggers for each cylinder, and consistent bottle pressure.
This
>is the voice of experience. I got greedy for numbers and tried to do the
same
>thing on a dyno once. I had plenty of fuel as confirmed by the Dyno
operator's
>exhaust analyser. The failure was catastrophic with very little warning and
was
>very very expensive.
>- -Rod Wiggins
>86 Porsche 944 turbo, (with fresh engine).
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>Date: Thu, 16 Dec 1999 02:01:49 -0700 (PDT)
>From: Tristan Dresch <sac49091 at saclink.csus.edu>
>Subject: Re: DIY_EFI Digest V4 #698
>
>I am interested in the idea of using some sort of efi controller to
>regulate nitros flow. I want to be able to map out the flow of nitros at
>different levels to maintain a steady torque level. Lets say I want to
>maintain 400lbs of torque from 2000 to 6000 rpm on a turbo 4. Is it
>possible to use nitros and a computer to achieve this? If so how? I was
>thinking of using rpm, throttle position, and intake temp as inputs. Any
>ideas or suggestions - Cris
>
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