Ok be honest .

Well im in the process of installing a nitrous kit, And everyone that has found out about this they all say that my engine is goin to blow?

What do you think am I really digging a grave for my car?

91 gta
305 tpi
89,000 miles
auto
wot switch
wet kit
100 shot

 

If its jetted right it should take it fine.

 

unless its already on the edge of blowing, it should take a 100 shot no problem granted the fuel system is up to par.

 

as long as you have a fuel pressure safety switch and retard the timing I think you'll be alright. Don't use it everyday all day, but it'll be fine as long as the motor is mechanically sound. We pull engines with 200k out of the junkyard and hit them with 200+ shots and they last a season sometimes, if not there's the 90 day warranty program, so I'm sure a 100 shot on a good engine with functioning ignition would work.

 

I keep reading that you want to retard the timeing 2 degrees for every 50 shot of the juice ..so in your case ... retard it 4 degrees

 

So stock timing is bad??

And it is a bad idea?

 

Stock timing isn't "bad" it's just that adding power adds cylinder pressure, just like adding boost or higher compression. Many times that means you should pull some timing out. Higher pressure means more chance of knock. They were telling you to retard the timing when spraying to reduce that risk.

I'm not a nitrous guy, but from what I've read it only kills engines if:
1. You go lean and get detonation.
2. You go really crazy on HP.

100 extra ponies on even an older SBC is hardly insane IMO. Like others have said, If the engine is still in pretty good shape it should take it.

 

Nitrous is not a bad idea, only when rigged and not run properly, period.

I had a stock 350 TPI with dual cats and a cat-back and ran a 150 shot all day, the car only had 66,xxx miles and I made sure that everything like fuel pump and injectors etc. etc. were in good running condition.

 

its normaly for people to say that because of the bs they see on movies or there buddy ghetto rigging a nitrous system. your motor is not going to blow unless you run lean so knock the timing and only run high octane. if you are really worried about it run race gas when you race it to help prevent dention when you spray.

if you dont trust the motor get a wide band 02 sensor and a good A/F ratio gauge and bump up your fuel pressure a tad so when you spray it wont drop the pressure and lean out.

 

just wanted to say that ive had my nitrous kit for 16 days with a 163,000 mile 305 tbi and ive put 6 bottles in it. 150 shot.

gonna spray more on the way to work Saturday too.

 

6 bottles in 16 days??? $25-$35 per refill...$150-$210 for the 6 refills...

1. I feel sorry for your engine.
2. I want your wallet!

 

try 40-45 a pop, $4/lb

engine is fine?
why do you worry for it? its never ran so good in its entire life.


I'm ****ing BROKE.
hence why 10+ bottles haven't been through it yet.