i looked around today and what i had for spare parts and this is what i came up with

block, 3.1/3.4 crank,1 set of rods/3.1 pistons, a old 260 cam and lifters,a gen 2 top end and my other set of ported iron heads.

i dont have a stock intake for the gen 2 stuff but i do have a custom manifold i built that clears the dizzy. it just needs to be finished

i also have a wet nitrous setup that i will prolly never use on my turbo motor,its only good for upto 150 shot though.(simple soilinoid change and that can be upgraded to 200-300 shot)

the 3.1 rwd motor was what 8.9-1 cr ?
and with the gen 2 stuff it will work out to 11-1 or so

im not all to familiar with high hp nitrous setups so im unsure of a low compression or high compression build would be in order ill have to look into that


so i could prolly put this thing together with stuff i have laying around for 300 bucks or so by the time im done with bearings and gaskets.

not sure though but its deff a very tempting lil side project to do since noone has really built a motor to abuse with nitrous before

 

Keep your compression moderate, I wouldn't go over 10:1. Aluminum heads to improve heat transfer. Make sure you get things right with cast pistons, too. Any detonation on nitrous and you'll have shattered piston all over your oil pan. Get your quench right and smooth out sharp edges in the combustion chamber to min chances of detonation. Sounds like a lot of fun, I've been waiting to see a v6 heavy hitter on spray (like 200 shot range) just to see how far it can be pushed. If you want to get serious with it I'd set up an independant supplimental fuel delivery system so you can really push it without being fuel limited and get forgings- maybe a staged nitrous system too so you don't end up bending a rod or the crank when you hit the button. But that's only if you go for a monster dose- like 300+.

 

Hermmmm i wonder if you could spray meth along with the fuel and the nitrous that would pevent detonation

 

Methanol/water injecton (windshield washer fluid) is a good detonation suppresant, but the cost of some of the kits is waht keeps me away. Usually costs as much as a good nitrous kit! Eventually I'm going to put together my own and tie it into the egr tables on my ecm so I have full tuneability with a main switch on the dash.

 

u can build ur own kit for next to nothing,infact alot of the brand name kits that dont use shurflow pumps use efi intank fuel pumps

putting tables into the ecm to control it is pointless its complicates it way to mach, for a few bucks and a trip to radio shack u can build ur own meth com\ntroller that will let u vary flow from 100%down to 50%

 

Not really, all I have to do is connect the egr control pin to a solenoid or better yet a cold start injector. Gives me more control without having to build a controller. Only thing I'd have to change in the code is to make one of the egr tables refrence the mat instead of the cts, then just mess with the egr tables a little.

 

soilinoid wont work, an injector possibly, ive looked at all this stuff already.
theres a reason they use voltage controllers to control the pump and not switching a soilinod liek u would on a nitrous setup

 

Yea, running the pump at 100% dc all the time against a closed valve would burn it out in no time flat. Switching it off when I don't need it and a resistor or something to choke it off a little should help.

 

are u trying to vary flow or just control activation?

 

A switch on the dash will shut off the whole system, the ecm will control an injector when it's on. When it's on the pump will run at a constant rate regardless. So I'm more or less just controlling activation.

 

why go threw all that trouble.
#1 if u need meth u need it all the time at the setpoint. u dont say ok i can cruise around at 12 psi without meth, then decide ok now ill arm it and run it at 12 psi. it wont make any difference the tune has to change when meth is active.

u either need it to control detonation or u need it it to keep iat temps down

#2 a simple hobs switch will turn it on at off at desired level

 

??? When have you ever crused along at 12psi? Just putzing around town I won't get into heavy boost, like maybe 1-2 psi at most. I do most of my driving below 2000 rpm, even at 55 I'm only at ~1800 rpm with the converter locked. It won't be running hot enough to need methanol. I'm going to use an intercooler as well, the methanol is just for protection when I turn the wick up. A hobbs switch is a good idea though.