155 Degree Temps at end of Track

[Vaders Sy]

Re: 155 Degree Temps at end of Track

Maybe you had an air pocket that got worked out since you did a drain and fill last week.

Maybe. However, this was like this before I changed the coolant too. I am going to drain the system tonight and remove the CAC. I will make sure the CAC is not clogged without it being on the truck. Regardless, I am going to check to see how much the pump flow.

You guys recommended using to buckets? Explain to I know what I need to do.

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

Also, for reference, where does the ECU get the IAT taken from?

For those who know, what are you typical intake air temps?

 

[WyoSyclone]

Re: 155 Degree Temps at end of Track

After making the mods to my IC/CAC my highest temps in 4 datamaster runs has been 112 degrees Farenheit (43 celsius) - this was after about 40 minutes of driving around town with some 1/2 throttle runs up to 7lbs boost. Temperature is highest when at rest - as expected.

The MAT (manifold air temperature) sensor is located right next to the brake booster hose that runs from the driver's side of the upper intake over to the brake booster. The Sy manual states that the temperature range expected by the ECU, from the MAT, is 10-90 degrees celsius.

Hope this helps.

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

After making the mods to my IC/CAC my highest temps in 4 datamaster runs has been 112 degrees Farenheit (43 celsius) - this was after about 40 minutes of driving around town with some 1/2 throttle runs up to 7lbs boost. Temperature is highest when at rest - as expected.

The MAT (manifold air temperature) sensor is located right next to the brake booster hose that runs from the driver's side of the upper intake over to the brake booster. The Sy manual states that the temperature range expected by the ECU, from the MAT, is 10-90 degrees celsius.

Hope this helps.

That helps greatly. I was hoping someone could tell me there temps at the track for a fair comparison.

I have spent the last 2 hours checking the hoses. I found that there was still some air in the system. Filled the tank. Ran the pump. Back and forth a couple of times until the pump would flow the coolant out of the intercooler. Put the cap on and went for a ride. I am proud and still smiling, temps are in the mid 70's to low 80's. Driving for about 15-20 minutes. The highest was 84 at the light. As soon as I started to drive and air got through the CAC, temps dropped to high to mid 70's. Even with boost the temps rose about 4-5 degrees then dropped and leveled out. The outside temperature is around 50. I understand the day we were racing it was about 75. Even if you add 25 degrees to my temps, I am right around 100, give or take. That is an improvement from 150's to 170's.

The intercooler still looks like it could use some more coolant. I know that the coolant expands, should I leave some room? I was also considering capping the overflow line. Suggestions on the overflow line?

Thanks for all who have contributed and for those reading, I hope this helps you too!

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

I just went out to add the rest of the coolant to top off the intercooler. Put the coolant in and turned the pump on. Coolant poured out and I switched off the ignition and looked into the intercooler and it was at half already? What is going on?

I can't sleep until I figure this out!

 

[Vaders Sy]

A New Problem?

A New Problem?

Drove the truck again. Now it won't go over 10 lbs of boost without shuttering and hesitating. Now what's up? Temps were the same. Low this time was 72. High was 88 in my driveway idling for the garage door.

This is fun! :rock:

 

[WyoSyclone]

Re: 155 Degree Temps at end of Track

Hi J,
If you turned the pump on and coolant flowed out the fill neck, you may have a kinked return line going back down to the CAC. Since liquid can't be compressed, and this is a closed loop system, any coolant pushed out by the pump should be replaced by the coolant sucked back into the pump. If the pump is pushing coolant out of the fill neck it means it's not being sucked in by the pump.... probably due to a kinked line.

Isn't this fun!

 

[WyoSyclone]

Re: 155 Degree Temps at end of Track

....or a bloody air pocket.

BTW - I would leave the overflow line connected.

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

Alright. I guess that means I got to get back to work and find the kink. I did noticed that the top line off the intercooler is slightly higher than the intercooler. Maybe this is causing it? All other lines seem not to have a kink. I will double check again this morning before the rain starts.

Any reason why the truck hesitates to go over 10 lbs?

 

[Flyin Ryan]

Re: 155 Degree Temps at end of Track

Where I found the kink to always be on my truck was on the lower cche so I would also check there and after you get the ic full this time, leave the cap off the upper ic over night to see if that will help work some of the air out of the system too.. fill it again and turn the pump on and off to try to "burp" the air out of the system once your sure there is no kinks or extreme bends.

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

I found a bend in the hose that connects to the top part of the intercooler. The hose was molded to fit around another metal hose near the radiator fan shroud. I am going to drive it and see how it does. I might just go get new hoses and start over.

 

[WyoSyclone]

Re: 155 Degree Temps at end of Track

Hey J,
Well, the hose that goes into the top part is the feed to the upper IC... the lower one feeds back down to the CAC. The lower one is the one I would expect to be kinked.

Here's a link to the thread on how I redid mine a few weeks ago....

http://www.syty.net/forums/showthread.php?t=47677

Hope this helps.

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

I bleed the system. Lots of little bubbles at first. Then every once in a while you would see bubbles. I got it to the point where I don't see any bubbles but one every now and then. Drove the truck, temps were 80's then 90's and eventually on my test route ended at 119. Here is 69 degrees with 71% humidity.

Just when I thought I had it going good. I will let the truck cool down and check the coolant level again.

 

[WyoSyclone]

Re: 155 Degree Temps at end of Track

If you do have a kink on the upper hose going into the IC, these little pumps don't have the pressure to pump against that kind of head - this could cause little to no flow of coolant. I guess just check to make sure ALL kinks are out, on both lines. This could explain the small bubbles working their way up out of the CAC as well.

 

[Vaders Sy]

I should have listened earlier!

I should have listened earlier!

I started messing with the Sy again tonight. I was fooling around with the coolant. I got tired of it and decided to drain the intercooler and charge air cooler once again. Half an hour later I had the CAC out of the truck and to my eyes was quite a happy sight! I noticed the one kink but not the second! Just past the outlet from the CAC there was another kink that had almost eaten completely through the hose. 4 inches past was the other kink that I saw.

First: Make sure the pump flows before I button it back up. I am confident it does,
Second: Make sure CAC is not clogged.
Third: I am going to use 90 degree bends coming from the upper intercooler to minimize the potential to get kinked and hopefully it will look better.
Lastly: If all else passes, be very careful putting the CAC back into the truck and keep my fingers crossed.

I am still having fun! :rock:

 

[WyoSyclone]

Re: 155 Degree Temps at end of Track

Cool! Get that puppy fixed and fired back up! I'm anxious to see what your temps drop to.

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

Cool! Get that puppy fixed and fired back up! I'm anxious to see what your temps drop to.

I won't be able to sleep tonight. I want to do those things and see those temps as well! I will report back once it is finished.

 

[Vaders Sy]

Pump is Running but....

Pump is Running but....

I put a 2 gal. bucket full of water connected to the pump by a hose. I left the other hose on the outlet. Turned the pump on and nothing happened. I put water into the CAC and filled the lines. Still no flow but the pump is running. I ran water through the CAC and the pump, but the water flowed fine through using the garden hose. What is going on? I can hear the pump running but it is not pumping!

 

[James Thomas]

Re: 155 Degree Temps at end of Track

Just a just a suggestion. Pull the pump off the truck and try you bucket hose test set up again with some "jumper wires" to run the pump. This is a sure way to check the pump / flow. I don't know what pump you have but I had a stock pump that would run / buzz put didn't pump? I didn't tear it down (stock pump's not even worth the time) but I would guess the shaft or impeller was busted.

If the pump is good then you have a kinked hose or an air pocket or both. Check some of my older posts about this. The stock system is very picky about air pockets and kinks. If you have replaced all the metal hard lines with the rubber hose mod, really check your routing (every inch!). It will work best with plain water and the correct mix of RED LINE water wetter and can be a pain to "burp" all the air out but it will do decent if all is correct.

________________
James

 

[dgoodhue]

Re: 155 Degree Temps at end of Track

This is one of the reasons my truck is now air to air...