abnormaly high intake temperatures with meth
Thread Starter
Teching In
Joined: May 2014
Posts: 23
Likes: 0
abnormaly high intake temperatures with meth I figured i'd try to pick some of your guys brains as well as some on the truck side. i've got an older side mount whipple i made work on my 08 sierra. i went to get tuned yesterday and the intake temps were just retarded, pun intended...because it's taking out every bit of timing and making this thing a ******* dog. I put in the biggest nozzle that came with my kit (snow pump, lines, nozzles with an aem progressive controller). cruising around temps are 130-170...hammer it and they go all the way up to 220! i'm running 100% meth as well. any ideas? pic for reference
Non intercooled blower?
Those things are giant heat pumps when they're spun very fast
Even with a intercooler, giant heat exchanger, and ice tank/reservoir the whipple on our corvette gets stupid hot after a very short time period
It will pull so much timing the car is slower than it was na once it's hot
Those things are giant heat pumps when they're spun very fast
Even with a intercooler, giant heat exchanger, and ice tank/reservoir the whipple on our corvette gets stupid hot after a very short time period
It will pull so much timing the car is slower than it was na once it's hot
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Where exactly is the temperature sensor ? And how much meth ? What pump ? What controller etc ?
And how much timing is changed is entirely down to the tuner. Whether it needs any timing changes again, is down to the tuner.
And how much timing is changed is entirely down to the tuner. Whether it needs any timing changes again, is down to the tuner.
Thread Starter
Teching In
Joined: May 2014
Posts: 23
Likes: 0
temp sensor is in the evap purge port on the intake manifold, in the pic its behind where the red meth line is. i'm running a snow pump 100% meth and an aem maf controller set to come on at 50%
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Big pump, small pump ?
What size nozzle ?
And given the nature of the blower etc...have the meth turn on much earlier and reach full flow very early too.
With no IC or any form of cooling really, you'll want to be spraying a lot, and more often than other setups might want.
As for the meth/water debate. Yes water does cool better per unit volume, especially if temps are very high, but I wouldnt go as high as 50/50. Either way that isnt the problem, you simply need more fluid injected.
If you there are no concerns about the rotors, add a nozzle pre TB as well.
What size nozzle ?
And given the nature of the blower etc...have the meth turn on much earlier and reach full flow very early too.
With no IC or any form of cooling really, you'll want to be spraying a lot, and more often than other setups might want.
As for the meth/water debate. Yes water does cool better per unit volume, especially if temps are very high, but I wouldnt go as high as 50/50. Either way that isnt the problem, you simply need more fluid injected.
If you there are no concerns about the rotors, add a nozzle pre TB as well.
Thread Starter
Teching In
Joined: May 2014
Posts: 23
Likes: 0
Big pump, small pump ?
What size nozzle ?
And given the nature of the blower etc...have the meth turn on much earlier and reach full flow very early too.
With no IC or any form of cooling really, you'll want to be spraying a lot, and more often than other setups might want.
As for the meth/water debate. Yes water does cool better per unit volume, especially if temps are very high, but I wouldnt go as high as 50/50. Either way that isnt the problem, you simply need more fluid injected.
If you there are no concerns about the rotors, add a nozzle pre TB as well.
What size nozzle ?
And given the nature of the blower etc...have the meth turn on much earlier and reach full flow very early too.
With no IC or any form of cooling really, you'll want to be spraying a lot, and more often than other setups might want.
As for the meth/water debate. Yes water does cool better per unit volume, especially if temps are very high, but I wouldnt go as high as 50/50. Either way that isnt the problem, you simply need more fluid injected.
If you there are no concerns about the rotors, add a nozzle pre TB as well.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo 9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
As airflow is linked to engine load, I see no reason why you couldnt have it set so you drive around all day with it off, and it only come on when airflow is high enough.
If you cannot find a happy medium, maybe a different control parameter might work better.
Whether MAP, IDC or better still a combination of 2 if that's doable with your controller.
TPS might actually be a good one with that type of blower
If you cannot find a happy medium, maybe a different control parameter might work better.
Whether MAP, IDC or better still a combination of 2 if that's doable with your controller.
TPS might actually be a good one with that type of blower
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Water cools better per unit volume, and depending on temp it's sprayed into.
But water also has the downside that it doesnt burn. You could try say 70/30 initially, but really for most part it just sounds like you need more fluid injected and at more suitable times.
But water also has the downside that it doesnt burn. You could try say 70/30 initially, but really for most part it just sounds like you need more fluid injected and at more suitable times.
Thread Starter
Teching In
Joined: May 2014
Posts: 23
Likes: 0
i'm gonna turn the controller down to 25% and take it for a spin and see what happens here in a few minutes.
Restricted User
Joined: Mar 2014
Posts: 7,192
Likes: 109
From: Ohio
Methanol has its benefits over water. It cools the intake charge better as it evaporates faster than water, and it works well as a secondary fuel supply under boost.
Unless you're running an air/water intercooler, forged pistons with thick ring lands, and E85, there is absolutely no reason to not run at least 30-50% water in your mix.
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
I've never said it is a downside, just that when you start introducing a lot of water, control over mixture flow becomes far more important.
If you take the same dummy approach with water as is done with 100% meth...ie just dump shitloads in, then you will see a reduction in performance simply because the engine wont want so much water.
If you take the same dummy approach with water as is done with 100% meth...ie just dump shitloads in, then you will see a reduction in performance simply because the engine wont want so much water.
Thread Starter
Teching In
Joined: May 2014
Posts: 23
Likes: 0
well, i set the engagement much earlier and temps are definitely down, instead of 220 it was seeing 170, but timing starts getting pulled at 140, i saw at the most 8* and it felt great, i need to dial it in more with the engagement, it bogs down, but I think i'm on the right track. I'll try adding some distilled water in the mix and see if it helps.
You can see the temp sensor in his pic about 6" behind the nozzle. The temps reported with the nozzle that close will be crap anyway IMO.
How much boost is it making? Those temps sound completely normal to me for a small displacement non-intercooled blower. Esp. since you're starting out at 120+.
625ml per min? So like 10gph? Thats not much volume when using straight methanol. straight methanol. Get a "T" fitting and add another 625ml nozzle. I used more than twice that amount on my 3.8 liter.
How much boost is it making? Those temps sound completely normal to me for a small displacement non-intercooled blower. Esp. since you're starting out at 120+.
625ml per min? So like 10gph? Thats not much volume when using straight methanol. straight methanol. Get a "T" fitting and add another 625ml nozzle. I used more than twice that amount on my 3.8 liter.