what size meth nozzle?
Thread Starter
Senior Member
Joined: 06-07-06
Posts: 1,425
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From: Brampton, ON, CANADA
what size meth nozzle?
2.9 pulley, about 260whp, 44# injectors
going to be 2.75 or smaller shootin for another 20whp or so and 60# injectors
i have a meth plate post blower with 2 ports
i need to know what size nozzle to buy.
consider i need 2 nozzles and its going to be either a 150psi pump or 250psi pump so if i could get nozzle sizes for both pumps?
going to be 2.75 or smaller shootin for another 20whp or so and 60# injectors
i have a meth plate post blower with 2 ports
i need to know what size nozzle to buy.
consider i need 2 nozzles and its going to be either a 150psi pump or 250psi pump so if i could get nozzle sizes for both pumps?
There was just a huge thread on this subject in this same section I think. I think most people will say get 2 3gph nozzles for your setup, but more people will chime in im sure
Thread Starter
Senior Member
Joined: 06-07-06
Posts: 1,425
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From: Brampton, ON, CANADA
probably just water for cooling... im not planning on running meth yet, i just want the added cooling of the water which from others i know to have been a great help in cooling charge temps
Here we go again..... lol
Per my test on a 2.7 pulley making 19 psi w/ just a 3" catted DP for exhaust.
I can sucessfully run two 7gphs pre and post blower in 3rd gear from 3000 to 7000 rpm on a 50/50 mixture. No bogging, no sputter, just mash and go.
4th gear on the other hand is another story, if you start in 4th gear before its making almost full boost (roughly 4200rpm), afr starts about a point richer (no bog as expected) and works its way to commanded by redline. Start @ full boost in 4th, and commanded afr is dead on even with 4th gear's greater load.
Lowest IAT2s in 44* weather i've seen is 113* @ 7000 rpm on dual 7gphs 50/50.
---
Back on topic, now knowing how far you can actually take it.
For a 2.9 or 2.75 pulley setup. You'll be fine running a dual 3gph setup pre and post. I think most would agree on this, even those who don't agree with my current setup. It never hurts to up the nozzle size pre blower though. Most of it will burn up in the m62, but it will help keep your blower cooler and the added meth doesn't hurt either.
Per my test on a 2.7 pulley making 19 psi w/ just a 3" catted DP for exhaust.
I can sucessfully run two 7gphs pre and post blower in 3rd gear from 3000 to 7000 rpm on a 50/50 mixture. No bogging, no sputter, just mash and go.
4th gear on the other hand is another story, if you start in 4th gear before its making almost full boost (roughly 4200rpm), afr starts about a point richer (no bog as expected) and works its way to commanded by redline. Start @ full boost in 4th, and commanded afr is dead on even with 4th gear's greater load.
Lowest IAT2s in 44* weather i've seen is 113* @ 7000 rpm on dual 7gphs 50/50.
---
Back on topic, now knowing how far you can actually take it.
For a 2.9 or 2.75 pulley setup. You'll be fine running a dual 3gph setup pre and post. I think most would agree on this, even those who don't agree with my current setup. It never hurts to up the nozzle size pre blower though. Most of it will burn up in the m62, but it will help keep your blower cooler and the added meth doesn't hurt either.
Everything a number to you?
Bryan your missing the point of my experiment with dual 7s on a m62.
Does the car flood?
No
does it lower iat on sub 2.7 m62 pullies?
very much so
Does it allow for very lean conditions and still maxes spark without a hint of knock?
Yes
Is it practical?
No, not at all for our application.
End result:
it works, but for the sake of keeping the tune consistent @ WOT in every gear; your better off running a 3-6gph setup.
Got anything else to say, other than my testing is skewed? I tune at the same temperature every time, at the same elevation, on the same road, on the same setup.
Bryan, here's to you... **** OFF
---
Sry OP, but this guy has been doing nothing but trolling my post. Apparently if your a joe shmoe, any days and hours spent testing uncharted grounds is considered skewed.
Bryan your missing the point of my experiment with dual 7s on a m62.
Does the car flood?
No
does it lower iat on sub 2.7 m62 pullies?
very much so
Does it allow for very lean conditions and still maxes spark without a hint of knock?
Yes
Is it practical?
No, not at all for our application.
End result:
it works, but for the sake of keeping the tune consistent @ WOT in every gear; your better off running a 3-6gph setup.
Got anything else to say, other than my testing is skewed? I tune at the same temperature every time, at the same elevation, on the same road, on the same setup.
Bryan, here's to you... **** OFF
---
Sry OP, but this guy has been doing nothing but trolling my post. Apparently if your a joe shmoe, any days and hours spent testing uncharted grounds is considered skewed.
Last edited by 100% METH; Feb 11, 2010 at 04:15 AM.
Rent me! per hour
Joined: 03-22-07
Posts: 24,161
Likes: 20
From: Still fixing others mistakes.
flooding a motor with methanol is a brilliant idea steven.
is this your first methanol injected vehicle? is this your first real tuning experience?
this is no where near my first rodeo junior. make the power or go the **** home.
is this your first methanol injected vehicle? is this your first real tuning experience?
this is no where near my first rodeo junior. make the power or go the **** home.
Senior Member
Joined: 09-23-08
Posts: 6,621
Likes: 0
From: Raleigh, NC
Everything a number to you?
Bryan your missing the point of my experiment with dual 7s on a m62.
Does the car flood?
No
does it lower iat on sub 2.7 m62 pullies?
very much so
Does it allow for very lean conditions and still maxes spark without a hint of knock?
Yes
Is it practical?
No, not at all for our application.
End result:
it works, but for the sake of keeping the tune consistent @ WOT in every gear; your better off running a 3-6gph setup.
Got anything else to say, other than my testing is skewed? I tune at the same temperature every time, at the same elevation, on the same road, on the same setup.
Bryan, here's to you... **** OFF
---
Sry OP, but this guy has been doing nothing but trolling my post. Apparently if your a joe shmoe, any days and hours spent testing uncharted grounds is considered skewed.
Bryan your missing the point of my experiment with dual 7s on a m62.
Does the car flood?
No
does it lower iat on sub 2.7 m62 pullies?
very much so
Does it allow for very lean conditions and still maxes spark without a hint of knock?
Yes
Is it practical?
No, not at all for our application.
End result:
it works, but for the sake of keeping the tune consistent @ WOT in every gear; your better off running a 3-6gph setup.
Got anything else to say, other than my testing is skewed? I tune at the same temperature every time, at the same elevation, on the same road, on the same setup.
Bryan, here's to you... **** OFF
---
Sry OP, but this guy has been doing nothing but trolling my post. Apparently if your a joe shmoe, any days and hours spent testing uncharted grounds is considered skewed.
Hell we even messed around with it for hours and hours on my own car. You tell him to **** OFF... but yet he has forgotten more about this **** than you know junior.
TO the OP... if you want real world experience and knowledge Area is the guy to listen to... I have done it for years... and ya know what cars still running great to this day.
One of only a handfull of people I would ever let near my car with a laptop!
But do what you want... most people blow him off but for those smart few left on this site, he's the go to guy!
Senior Member
Joined: 06-25-07
Posts: 6,003
Likes: 0
From: Kissimmee, Fl
X2.
I'm running a 5gph nozzle with 80/20 mix pre blower. (TVS with 3.1 pulley)
I'm able to hold 25.5* without knock and my IAT2's stay fairly low under WOT.
If the OP is gonna be doing nothing other than spraying distilled water for cooling purposes, anything bigger than 3 would be useless.
I'm running a 5gph nozzle with 80/20 mix pre blower. (TVS with 3.1 pulley)
I'm able to hold 25.5* without knock and my IAT2's stay fairly low under WOT.
If the OP is gonna be doing nothing other than spraying distilled water for cooling purposes, anything bigger than 3 would be useless.
Thread Starter
Senior Member
Joined: 06-07-06
Posts: 1,425
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From: Brampton, ON, CANADA
thanks for ****** up the thread lol....
ehhemm....
thanks for the info guys.... i know area knows his shyt, i've been on here long enough, im tuning the car myself as i have been for years now but i've never messed with meth injection
what i wanna do right now is just cool with water and then go meth/water later so i can see the difference. i havent even considered to decide the mixture at this point lol
i was also suggested to do a 2 and 3 gph nozzles... maybe i should go with a 2 and 2?
was this his 114th post?
even i know you'd flood the motor like that
ehhemm....
thanks for the info guys.... i know area knows his shyt, i've been on here long enough, im tuning the car myself as i have been for years now but i've never messed with meth injection
what i wanna do right now is just cool with water and then go meth/water later so i can see the difference. i havent even considered to decide the mixture at this point lol
i was also suggested to do a 2 and 3 gph nozzles... maybe i should go with a 2 and 2?
Here we go again..... lol
Per my test on a 2.7 pulley making 19 psi w/ just a 3" catted DP for exhaust.
I can sucessfully run two 7gphs pre and post blower in 3rd gear from 3000 to 7000 rpm on a 50/50 mixture. No bogging, no sputter, just mash and go.
4th gear on the other hand is another story, if you start in 4th gear before its making almost full boost (roughly 4200rpm), afr starts about a point richer (no bog as expected) and works its way to commanded by redline. Start @ full boost in 4th, and commanded afr is dead on even with 4th gear's greater load.
Lowest IAT2s in 44* weather i've seen is 113* @ 7000 rpm on dual 7gphs 50/50.
---
Back on topic, now knowing how far you can actually take it.
For a 2.9 or 2.75 pulley setup. You'll be fine running a dual 3gph setup pre and post. I think most would agree on this, even those who don't agree with my current setup. It never hurts to up the nozzle size pre blower though. Most of it will burn up in the m62, but it will help keep your blower cooler and the added meth doesn't hurt either.
Per my test on a 2.7 pulley making 19 psi w/ just a 3" catted DP for exhaust.
I can sucessfully run two 7gphs pre and post blower in 3rd gear from 3000 to 7000 rpm on a 50/50 mixture. No bogging, no sputter, just mash and go.
4th gear on the other hand is another story, if you start in 4th gear before its making almost full boost (roughly 4200rpm), afr starts about a point richer (no bog as expected) and works its way to commanded by redline. Start @ full boost in 4th, and commanded afr is dead on even with 4th gear's greater load.
Lowest IAT2s in 44* weather i've seen is 113* @ 7000 rpm on dual 7gphs 50/50.
---
Back on topic, now knowing how far you can actually take it.
For a 2.9 or 2.75 pulley setup. You'll be fine running a dual 3gph setup pre and post. I think most would agree on this, even those who don't agree with my current setup. It never hurts to up the nozzle size pre blower though. Most of it will burn up in the m62, but it will help keep your blower cooler and the added meth doesn't hurt either.
was this his 114th post?
even i know you'd flood the motor like that
Last edited by senior_brown; Feb 12, 2010 at 03:01 AM. Reason: Automerged Doublepost
Former Vendor
Joined: 05-18-07
Posts: 397
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From: Oklahoma City
There is no magic x number nozzle that needs to be used on a paticular car. Just a range of what usually works for most people. In my experence i usually recomend between a do3 nozzle and do7 nozzle for most cobalts.
This is the reason the our kits come with 2 nozzles that way you can experiment with nozzle sizes.
This is the reason the our kits come with 2 nozzles that way you can experiment with nozzle sizes.
Member
Joined: 06-21-09
Posts: 257
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From: Reading, PA
straight water is going to bog/miss at a lower volume injected than a mix or straight methanol.
OP, is there a reason you don't want some percentage of methanol in the mix? I hate to suggest it, but IMO even blue washer fluid would work if fuel grade methanol isn't accessible...
OP, is there a reason you don't want some percentage of methanol in the mix? I hate to suggest it, but IMO even blue washer fluid would work if fuel grade methanol isn't accessible...
Member
Joined: 03-13-11
Posts: 328
Likes: 0
From: Lethbridge, Canada
straight water is going to bog/miss at a lower volume injected than a mix or straight methanol.
OP, is there a reason you don't want some percentage of methanol in the mix? I hate to suggest it, but IMO even blue washer fluid would work if fuel grade methanol isn't accessible...
OP, is there a reason you don't want some percentage of methanol in the mix? I hate to suggest it, but IMO even blue washer fluid would work if fuel grade methanol isn't accessible...
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