Hey all,
Ive been reading all about the 60mm tb and been searching this site for every study hall(2 of them) every day for the last week(my car is in the shop being repaired cause of some bitch that hit me and ran... got his plates and he was arrested, but its in the shop cuz i dont do body work, and i miss it soo much!)Ive pretty much made up my mind on getting the MP 60mm tb and porting and polishing my intake manifold to match it(also a lot of controversy on whether you can port match it all the way to 60mm without adding more alluminum or not, but if i have to stop at 59mm or 58mm, its not biggie) but i hear all this talk of the MP tb on NA cars or turbo cars, but i cant find any info on how it works with nitrous applications. anyone have any experience?

My other question is, ill be going to college next year and i know there are a couple of tracks near by that im gonna run at. ive been running a 75 shot with no problems on 93 pump for a while now. compression is still 200-210-200-200, which is pretty good. my question is what do you think is the biggest shot my stock bottom end could handle at the track running race gas? even if its just an 80 shot, its still a step up. i was maybe wondering if i could, or anyone has pulled off a 100 shot with race gas on the stock bottom end, or if thats pushing it. cuz i figure thats what 240 crank hp, **maybe** 250-260 crank hp with my other mods. i still need this car for daily driving. thanks for any responses i appreciate it.

I was also thinking about getting a MSnS but that probably wont be till after my first few runs at the track, so i will be able to pull back timing eventually, but for now lets assume this is stock timing also.

thanks alot

-Chris

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

Have you searched?

You have 2 questions here, one belongs in the general section.

in my opinion, you should get your intake ported to 60 and just go with the mp 60mm TB(my mani is at 59, i guess thats all they could do)... thats just me though. that decision would be up to you....

Do you want to rebuild your stock bottom end? If you do, then i dont see why running a 100 shot on your stock bottom until your engine blows up would be a problem. With nitrous, its not uncommon to get a nice little hole in your block too when you throw a rod.

BUT, if you dont want to rebuild i would top it off at the 75 shot. Untuned, 75 can even be lethal.

But ive never shot nitrous so ill let someone more experience help you out. but for now, this is my opinion.

Good luck!

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

I definatly dont have the time or funds for a new engine if the current one were to blow. i need this to get me to school and back next year(6 hours... 4 1/2 for me ) and i need it to be able to get me from my dorm to the auto lab everyday. I am aiming for around a 14.5 1/4 time with the 75 shot, and i was hoping that maybe with a bigger shot, and some awesome driving i might be able to nail a high 13, but i think thats almost impossible... let me dream lol but ya i would like to push it but if its too dangerous then i dont want to risk it.

i think the available race gas octanes around here are 104 and 114, but i might be mistaken on that. also something interesting, on a gas pump i was at, it said it was illegal to put leaded fuel in a car that says "unleaded gas only" on it. i dunno if you guys knew that, or if its just my state(il), but i never did and isnt 114 race gas leaded? but ya i was hoping i would be able to squeeze out a little bit bigger shot if i ran race gas, but if it will be too much of a risk i wont.

anyone with info or experience with the 60mm tb and nitrous? also if anyone has any more info about the shot with race gas im all ears. thanks for the help.

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

I use a 60mm jeep TB with a wetshot of NOS, I just bought a throttle spacer for a jeep cherokee drilled a hole and tapped it and it works perfectly.

Pruned out all the BS in this thread. Sorry the useful comments went too, so please repost if you contributed something meaningful.

juan

haha, my post was deleted. Thats hilarious.

But yeah, if you searched you would know how much nitrous you push on your stock bottom end... that was my point.

oh yeah, your a dumbass...(hopefully that wont be deleted lol)

I don't know much about the TB issue, but I do know a little about the N2O.

It has been asked before, and the general answer was "75 shot on stock bottom end"

I think there are two issues with this.

1. You run the risk with a 100 shot of not having it tuned properly, not having the jetting corrected on the wet setup, not having the fuel pump power for it...etc.

2. Also, you mentioned what, 250-265 horsepower? Our rods are good to about 300 and our piston ring lands don't like detonation.

Bottom line, stick to 75 shot until you rebuild the bottom. Hope this helps. We certainly don't want you to see you blow your motor up.

Brian

Red 97 Eclipse GS (420a) MTX
Custom Garrett T3 Turbo system
Megasquirt w/52 lb/hr injectors & a Walbro 255
Kicker/Alpine Audio (3 amps, 2 subs)
90 Cav 2.2 TBI auto (winter) <- yeah, it's fast

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

i like your attitude lol

-MIKE-

Stroked 2.2L

I told you not to go over the 75 shot in my first post.... please tell me how that is not contributing... just because you dont want to listen and feel as though your some fucking hot shot doesnt mean you have to be an ass.

who gives a shit if its "race gas"??? Its comon knowledge on this board and if you would have searched you would already know that 75 is as much as you can go safely on the stock bottom end. you might be able to get away with more for a few runs but sooner or later it WILL blow.

And by the way, dont make personal attacks man. If your not gonna say this shit to someones face then it just makes you look like a pussy saying it on the internet. if you would have said that to my face i would have knocked you out.

As for the throttle body, take what you know about it and stick with it.. since you have searched so much. It will increase throttle response (obviously), and when your pushing that much horsepower it is going to take the restriction out of the intake path giving you some high end power. when your not on the bottle, it will still give you some but you will notice it more when you are shooting.

Are you looking for horsepower numbers or what exactly is your question?

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

______________________________
If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.

'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



Factory Service Manuals: http://nawdu.de/files/

thank god! ^^

You're going to want to stay at a 75 shot on a stock block because when you get into the 100+ shots you will need to tune. Also its a good idea once you go above a 100 shot to have a direct port system. Go above a 100 shot and you will blow your engine up plain and simple. One of the following will happen Melt valves, bend/break a con rod, crack a piston or send a piston/rod through the block. If you have any other questions just shoot me a message.

myspace.com/coastiecobb

Haha thank you Darkone

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

______________________________
If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.

'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
'17 Sienna (Middle Aged Dad Mobile)



Factory Service Manuals: http://nawdu.de/files/

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

GS, nice job on keeping your cool man. You definately were the bigger man.

Dino, thanks for responding.

Again, I don't have experience with the TB and nitrous, but here's my thought.

The larger TB allows more air in, correct? So, better throttle response, better top end, better use with forced induction...etc.

But with N2O, there's no forced induction, and the extra oxygen is contained within the molecule itself not in the fact there is more air present (as with forced induction). So, it doesn't seem that a larger TB would benefit in this situation. Again, I'm not speaking from experience, but just thinking about it.

So you'd still have the benefits of the larger TB (especially on the top end with nitrous), but I don't think the N2O would be significantly augmented by the use of a larger TB. Unless I'm missing something?

Brian

Red 97 Eclipse GS (420a) MTX
Custom Garrett T3 Turbo system
Megasquirt w/52 lb/hr injectors & a Walbro 255
Kicker/Alpine Audio (3 amps, 2 subs)
90 Cav 2.2 TBI auto (winter) <- yeah, it's fast

Representing the Central Cali chapter of 2GNT!
(I think I'm the only member )

ok, i know im not supposed to post in here, but i figure if that many people hate me then i definitely owe you an appology. Im sorry i lost my cool man, and i thought i answered your questions.... but its all good. Good luck with your set up dude.

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

GS, you are correct in that nitrous (in the gas phase) is very cold. The reason for this is because in the liquid state (in the tank), it takes up a certain amount of volume. When it's shot into the motor, the pressure is relieved and the gas expands. This expansion drastically reduces the pressure, and thus reduces the temperature.

This is a good benefit if the nitrous is setup in the fogger setup in the intake pipe/manifold or the "dry" shot. It gives it time to cool the air=denser charge...etc.

It was my understanding from your sig that you were using a wet setup. Are you doing this with the "NOSZLES" or whatever they're called, where the nitrous is injected with fuel-like a direct port injection. Or are you fogging with fuel and nitrous?

If you're fogging, the cooling effect will be good. If you're direct porting it, it will be less noticeable, since the nitrous doesn't have much time to come into contact with more than the air immediately around it.

My thoughts about the size of the TB will still be pretty much the same though. It will help the upper end of the power band, and if you're cooling the air in front of the TB, that effect will be magnified. However, I don't think it will help to the effect that a larger TB would on a forced induction car.

Does that kinda answer your question? Again, I'm just thinking about it, not speaking from experience. I'd be interested to see what the difference really is with a stock vs. larger TB. I'm just as curious as you.

Brian

Red 97 Eclipse GS (420a) MTX
Custom Garrett T3 Turbo system
Megasquirt w/52 lb/hr injectors & a Walbro 255
Kicker/Alpine Audio (3 amps, 2 subs)
90 Cav 2.2 TBI auto (winter) <- yeah, it's fast

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

I'd love to know how you fare. Keep us updated!

Brian

Red 97 Eclipse GS (420a) MTX
Custom Garrett T3 Turbo system
Megasquirt w/52 lb/hr injectors & a Walbro 255
Kicker/Alpine Audio (3 amps, 2 subs)
90 Cav 2.2 TBI auto (winter) <- yeah, it's fast

I'm running the MP60mm TB with a port matched/gasket matched manifold with my nitrous setup and I think its a nice little touch. =)

We have similar setups. You should hit me up sometime.

Also, I wouldnt suggest anything over 75 for several reasons, mainly the fact that your ring lands wont support the extra cylinder pressures very efficiently.

Goodluck!

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

My damn greddy header has a 3" crack in the collector now. My car sounds like a log truck or something. Bleh. I feel your pain. I'm a senior this year too. College is the suck.