I'll try to keep a long story as short as I can. I was trying to find the limits of the stock 4B11 and I think I accomplished that I had the car running very strong, solid in the 11s and it was time to turn the power up and shoot for 10s. I have not been satisfied with the mediocre hp gains and loss of tq that people have shown with the larger stock replacement turbos, so I went a different route and chose nitrous...as I always do I have multiple uses for the car which include autox'ing as competitively as I can, so I just can't deal with a lazy powerband of a big turbo. So I started with a 75, went to 100, 125, and ended up at a 150 shot...still 100% stock fuel system. The car was downright f'ing rowdy on that 150 hit and I still had plenty of fuel..even running the car a tad on the rich side for nitrous. I kept trying to make it out to the track for the past 2 weeks to see how it would run but I kept getting rained out! My only point of reference was that on a 100 shot I pulled on an LS1 car that ran 11.4 @ 125...bench racing so what the hell.

A friend of mine challenged me to a friendly duel with his Supra, which has been 10.70s on a DR and 10.50 on an ET Street...all around 137mph. I've been drag racing for years and I have an all motor Honda that gets down the track pretty well so I have a good feel for what this thing runs. It feels like a solid high 10 @ 130 car...I only wish I could have found out. Knowing my Supra friend, I was expecting him to turn it up a little and he did. So I did the same. I put a 200 shot to it and went out for a datalogging pull. I hit the gas and nothing...I almost felt like the fuel solenoid stuck and no nitrous, or something was going on with the drive by wire BS. I did a once over on the car before I gave it another shot, rolled into it at 4K, nitrous stuck me in the seat hard then immediate carnage. AFR was 11:1, no knock, just kaboom and massive backfire with fire and the works.

I have reason to believe that something other than horsepower contributed to this catastrophic failure and that is yet to be determined. Possible hydrolock from a sticking fuel solenoid. Possible lean condition in 2 cylinders (afterall I am putting a lot of spray through a single nozzle, so there is no telling which cylinders are getting what). Lean condition backfire, or puddling fuel backfire with the n2o...etc.etc. I know guys have pushed this motor to 550whp with some big lazy turbos, but hitting it with 700wtq at 4000 rpm is a different story Either way...time to rebuild and hit it again. Next time with a progressive shot to ease the pain. I think it is also important to note that I did all of this...well over 500whp on the stock fuel pump. Granted that is very different than with a large turbo and getting your fuel through the injectors, but the 150 shot on top of my already 400hp had no trouble keeping up.

Mitsu built a very strong motor to take this hell



Lots of baggy and sharpie action going on with all this BS on new cars


This was the insertion point for the bulkhead fitting. In addition to blowing the hose open, it was blown off the throttle body.


Nothing bad here. Intake ports look like a Honda I've had one on my flow bench and the intake flows nice....lots of room for improvement on both the intake and exhaust.


Cylinder 1 a little wet


Cylinder #2 broken rod


Cylinder #1 broken rod which made a much larger hole...there is one to match on the back side of the block.


Hopefully the head is in good condition, but I will find out later tonight. This was my first catastrophic failure in 13 years of drag racing rice burners...the most I've ever done on my 9 second Honder was bent a valve from an overrev....so I'm proud and sad all at the same time LOL!

 

Poor 4b11, she never knew what hit it. Have fun on the rebuild.

 

Dude, if you've run hondas, you should've know that a single fogger is not the way to go for a big 200hp hit of nitrous. Ouch!

Build it back up and next time do a direct port if you're still that crazy.

 

Dude what were you thinking? 200 shot on a single fogger??? Thats just a death wish.
Time to get some stronger rods. Good luck on rebuilding your motor. Bullet proof that motor!

 

http://www.youtube.com/watch?v=ucYqDJT9I3s. and it went faster than this video........ 142mph trap speed....... oh yeah no bottle.

props to you though for pushing the X good luck with the rebuild

 

I ran big shots like this on my VIII but it didn't make as much power as this motor. Its harder to hide a direct port, but I agree and that is probably the next step

 

I'm not sure what that has to do with anything. That is super fast though Add 700lbs, put it on street tires, put a TV in the dash and a babyseat in back, pump gas, and lets line them up.

 

no doubt.i have videos of a pump gas car with a TV in it..... its built tho lol

its amazing how different they made these cars yet they net you near the same end result...... baggies, tears and sniffen a SHARPIE LOL JK

 

NOS for the LOSS!

Ah well, it's interesting that you tried all this on the stock turbo. Chances are that turbo is literally a flow restricter in the upper RPM's even with nitrous if it's still only able to push 19 psi. Sounds like a direct port setup would have been more reliable but I keep reading horror stories about NOS and turbocharged cars, all it takes is one minor issue and KABOOM.

Everyone is welcome to their opinions but a good medium sized turbo can really deliver on the street and strip without too many compromises. If getting GT35R power with the spool of a stock turbo was easy I guess everyone would be doing it. To me the GT30 sized setup is working out for me perfectly.

 

I'm really tempted to go with a 100 shot on the stock turbo, I love the lower spool up time and don't really want to go with a big slow spooler ( I also autoX mainly with this car)

and I've always heard great things about n20 (in smaller quantities) on FI'd cars, cobras LOVE IT!!!!!!!

the cooling properties of the spray made a 50 shot seem like 100 shot on a n/a car.

 

Wow omg

 

meth has good cooling properties too....

 

Can`t wait to see your next build!

 

That makes no difference as to how n2o makes power. The boost can fall to 19psi and I am still adding as much as I'm spraying regardless. As far as horror stories, my VIII just turned 70K miles on the original motor and I sprayed it for a LONG time, mostly with 125 shots but as high as 175. It make 505hp on pump gas and unlike these GT35 cars that make it in the upper rpms, it made 500+tq from the hit. Ultimately a 35R car makes more peak power and can do it easily, while making 500 on nitrous takes a lot of spray, but they drive completely different. I could have probably left this car alone with the 150 and it would have lived a long life just like that motor...I just pushed a little too hard, simple as that. You can do the same with a turbo. It is just horsepower, but nitrous is a little more unpredictable. Like I said I auto x the car and already have trouble keeping up with the Subarus leaving corners with the stock turbo...so this was my option to make 600 (I might add you are only a couple hundred off with your "big" turbo)

FWIW, your car on a GT30 is as fast as my car on stock turbo with stock cams, stock fuel system, etc. If we were to give it a go with even a little 100 shot, it would be sort of like a moose raping a small kitten. It can't be compared. I'll have a new motor in shortly and will run it in 2 stages with one being direct and see how it does. Highway rolls are fun when you jump out 3 cars on the hit

 

The cooling properties are great but you gotta get the timing right. Most guys will see 100hp from a 100 shot even on these cars. Once you get your timing dialed in you can start to see some big gains. Guys that run too aggressive on timing thinking they will make more power see less gains. On my old VIII, bone stock, I went from 13.3 @ 103mph to 11.9 @ 119mph on a 50 shot!!...ran those passes back to back within 30 min of one another.

If I would have fed the 200 with a progressive controller, I'd still be rolling around incognito and not posting pics up of a busted *** motor