125 replies to this topic

[fezzasus]

There is one explanation for the inlet temps...

 

leaking laminova o ring.

[haggi961]

Would I notice coolant on the floor or is it a sealed unit leak.

[CHILL Gone DUTCH]

 

I cannot be really bothered if he measures 365 or 395BHP, as both will be a major handfull in a VX.

Just like to see if/how he can sustain those low IAT's....

 

yeah I was very suprised at the IATs, I was out last week with Harrop & 80mm pulley and peaked in the high 80's

 

 

 

Can you put your speed on the inlet temp graph, or what gear your in

Edited by CHILL Gone DUTCH, 10 April 2014 - 06:32 PM.

[fezzasus]

Would I notice coolant on the floor or is it a sealed unit leak.

 

It's only a guess.

 

But if I had to explain why your inlet temps are so low, i'd say you were effectively running water injection, but that would be coolant coming from the laminoavs into the inlet, so it will be burnt off. Checking your charge coolant levels might help, as you'd see it go down if this were happening.

 

Obvious question. You are running a TMAP and not a MAP and separate temp sensor?

[haggi961]

My charger cooler levels are perfect and havnt moved since it's been superchager a few years ago as I've never topped it up. Even when I took it on track the other day it hadn't lost any. I did do a fresh coolant change with the charger cooler the other day so this might be helping.

This is my map sensor I'm running

[CHILL Gone DUTCH]

its a Tmap,

[CHILL Gone DUTCH]

Luke is running a very conservative ignition, 

when i had a conservative ignition the inlet temps were very low,

[fezzasus]

Luke is running a very conservative ignition, 

when i had a conservative ignition the inlet temps were very low,

 

shouldn't make a difference. Inlet temps only depend on compressor type and pulley size.

[CHILL Gone DUTCH]

there was a big difference

 

 

 

[fezzasus]

Pretty certain that's more atmospheric conditions. Air density will have a massive impact.

[CHILL Gone DUTCH]

Pretty certain that's more atmospheric conditions. Air density will have a massive impact.

 

I can check this now, i make a lot of notes, give me a second and i will let you know, 

[CHILL Gone DUTCH]

11C 1000mb 78% on the 10-03-2014 first graph

 

15C 1009mb 54% on the 01-04-2014 second graph

 

so there is a difference not sure if the is a pattern but i can look at other info i have, on different dates

 

Edited by CHILL Gone DUTCH, 10 April 2014 - 07:42 PM.

[fezzasus]

higher temperature, less humid = generates more heat.

[CHILL Gone DUTCH]

Here is a graph which was taken AM before most of the ignition was added 

 

[CHILL Gone DUTCH]

There is around 3-4% difference in the ignition settings

unfortunately i didnt record the humidity etc in the morning 

[haggi961]

Anyone know any other reasons why my inlet temps are so good? Have I maybe wired something wrong to get the results as I'm looking over Nicks b thread and his are at 90 degrees.

[alexb]

there was a big difference

 

 

 

 

I may be completely wrong, but to me it looks like the temperature curve is the reverse of what it should be. Whenever you rev up, T goes down. Look at the beginning of the curve, at stationary you start of with a high T and revving up it goes down. Should go up. It's so obvious that I hesitate to mention it TBH, as I probably make a fool of myself
 

[CHILL Gone DUTCH]

there was a big difference
 
 

 

 
I may be completely wrong, but to me it looks like the temperature curve is the reverse of what it should be. Whenever you rev up, T goes down. Look at the beginning of the curve, at stationary you start of with a high T and revving up it goes down. Should go up. It's so obvious that I hesitate to mention it TBH, as I probably make a fool of myself
 

The more info we can get the more we can understand what's happening
I'm not 100% but I'm sure ignition has a affect on inlet temps
But continus high revs also has a big effect

[fezzasus]

Ignition will not influence inlet temperatures!

 

There is no combustion in the inlet manifold. There is simply compressed air, air density, humidity and amount of compression will change inlet temperatures. That's all. 

 

 

Edited by fezzasus, 11 April 2014 - 07:45 AM.

[Bargi]

there was a big difference      

  I may be completely wrong, but to me it looks like the temperature curve is the reverse of what it should be. Whenever you rev up, T goes down. Look at the beginning of the curve, at stationary you start of with a high T and revving up it goes down. Should go up. It's so obvious that I hesitate to mention it TBH, as I probably make a fool of myself  

I think that's the problem. The start its obviously accelerating through the gears and you just don't get that much air through to drop temps that much