Just wondering if any here's blow, burned, or melted anything useing
nitrous.

 

nope. I just followed what the experts told me and it was all good.

 

a few people on here have blown gaskets n stuff. but mostly auto tranny's are the ones that have been hurt the much, i think the cases of blown engine have been due to trying to spray at high mph or highgear where the engine load is greater causing more stress on internal parts.. or spraying while the auto is downshifting therefore causing too much heat and creating a sliping tranny after that. basically i think most blown motors or auto's have been due to being careless, or malfuntioning parts like clogged solonoid.

 

Two motors. Pre-ignition, melted exhaust valves and plugs. Lots of plugs. There was a fair amount of my stupid mixed in.

"if engines ain't dyin', you ain't tryin' "


I now use Sunoco 104 octane 260 GT Plus from the can and shaved-ground 2-step-colder NGKs. No problems with 125-shot.

 

wat step were the plugs u melted? iv been using 2 step colder coper ngk's without problem, but im only at 75shot and dont use it too often.

 

In my entire time on the forum I can't remember an instance where someone damaged a motor that wasn't either due to the negligence of the owner, or a failed fuel pump or nitrous component. Engines themselves hold up just fine when properly tuned and cared for.

 

I was running a 125-dry shot. Fuel pressure at 90psi or so. I blew a gasket. The injector for that cylinder completely failed out of the blue. No warning signs.

I've heard of injectors locking up at high fuel pressures (90psi isn't even THAT high), but the injector just completely stopped working after that point.

 

75-shot plus 75-shot - the plugs (2-step-colder NGKs) just melted off the grounds, or showed preignition and piston splatters. I drove home several times with 1/8 spark gap, over 90 miles one-way.

Fortunately, I got smarter....

 

That may account for my "stupid" part - but I had a 255lph Walbro w/AERO fpr and dual-NX setup, and a pile of NX jets.

I know once I put the wrong jets in the second stage and melted two cylinders' exhaust valves ( I was actually pretty sick with a flu bug, and had no business driving), but the first engine melted down due to unknown reasons... crappy track gas, the wrong plugs, stupid, who knows? I actually melted the center electrodes of colder Iridium plugs, slagged the ground electrodes of various platinum and iridium plugs, until I took out one cylinder.

My last Infiniti engine (with 88,000 miles) has been just fine with 2-step colder copper plugs, with shaved grounds, Sunoco 104 octane, and 50-shot plus 75-shot. My main problem is lack of traction - and new slicks should fix that...

 

What do you mean 50shot +75shot?
Are you running in stages?

My first time useing nitrous I melted a plug on a sh*t dry nos kit.
Wanting more power, I upgraded to single point wet and 75shot; Detonated pretty bad and broke the ring lands (timeing issue and low grade fuel).

I stroked it +0.2L and drop the compression 9 points. All is good, you
live and learn.


I thought I'd see more blown headgasket, or burned valve posts. lol

 

Yup - two stages of NX wet spray - I have been launching at WOT with the first stage set to 50-shot, and my floor switch controls the second-stage now set to 75-shot.

Me and the new 23/8.5/15 M&H slicks are just leaving to drive 90 miles to the Kansas City strip, for their first taste of VHT......

 

I blew mine with a 125 shot. A ring came apart, and scored the sidewall of the #1 Cylinder pretty deep. It was passing a sh!tload of oil up through the intake.

 

Ouch. That stings.

 

I killed an auto tranny, but that was with a lot of abuse on it, then running a 75 shot on it. Switched to 5 speed, no problems since

 

Maximas can't take the abuse I guess.
I blew my sisters 98ish tranny completly stock.

 

hmm, i spray 125, and have detonated at 125, with 160 thousand miles, still no problems, my friend did the same thing, just messed up my filter.

 

How well did the car run w/125-shot? Any track times or other gory details to share w/others who spray-and-pray ????

 

http://forums.maxima.org/showthread.php?t=473495

doesn't sound that impressive, but think of it this way, tilley and mardi would be mid to upper twelves here....

 

Yeah - altitude is a killer on ETs - I run where the altitude is around 1000' - lots more air here. It would be interesting if you ran on slicks - the 60' time is critical, and without really sticky tires, you had to be spinning halfway down the track!

Maybe you could borrow some 5-hole Mustang 15" slicks - chances are they will fit. I'm just starting to use 23" M&Hs mounted on 15x8 American alloy wheels that are 5-hole Ford pattern w/3 3/4" backspacing. They bolt right up to our cars , but stick out a bit - at $60 each, who cares? Great traction, though. 60' = 2.0x sec now.

I highly recommend the Jbars - I tried a 100-shot launch without them and the BDF DRs I was using were pulled in so hard that the tires rubbed the metal of the inner wheel wells.

No detonation or preignition problems w/125-shot? What plugs did you use? And the big one - are you gonna try it again?

 

I plan on getting some for my 17" G35 coupes.... my buddy ran his turbo'd max on street tires, and spun all the way through 1,2,and part of 3 and still managed a 2.4 60' and a 14.4.... I hate our altitude.

I would but i love my 13" BBK to much, and i can only fit 17's...

I have them already but didn't have them installed when I ran that time.

No detonation, check out my cardomain for my list of nitrous mods to give you a better idea, www.cardomain.com/id/glenmoormax... Yes i hope to try again, but i might be going turbo and doing a DEK motor swap, so we'll see.

 

I checked out your Cardiomain site - you've built a very impressive car !! I didn't see anything unusual in the engine mods that would prevent nitrous problems - no ignition retard or such, but if a 125-shot works for you without problems, good deal.