155 Degree Temps at end of Track

[Vaders Sy]

Went racing last night. The Sy ran about 6-7 tenths off what it normally does. The IAT were around 140 at the end of the track on the first pass. The second and last pass it ran in 155 temp range. The pump is running, it does have coolant. I don't know what else to do. Any ideas?

 

[WyoSyclone]

Re: 155 Degree Temps at end of Track

When I did my IC/CAC pump upgrade a few weeks ago I found that my brand-new-looking coolant mix had actually gummed up inside the CAC. The coolant looked perfect and new but it took a garden hose and about 5 minutes of flushing to get the crud out of the CAC - looked like slimy jello coming out. If you haven't flushed the system in a while, or if the truck has just been sitting maybe it would be a possibility??

 

[dgoodhue]

Re: 155 Degree Temps at end of Track

The pump maybe running but is the coolant actually circulating? Kink in the hose? Air pocket?

 

[James Thomas]

Re: 155 Degree Temps at end of Track

When I did my IC/CAC pump upgrade a few weeks ago I found that my brand-new-looking coolant mix had actually gummed up inside the CAC. The coolant looked perfect and new but it took a garden hose and about 5 minutes of flushing to get the crud out of the CAC - looked like slimy jello coming out. If you haven't flushed the system in a while, or if the truck has just been sitting maybe it would be a possibility??

What kind of coolant / mix was this and how old was it?

____________
James

 

[WyoSyclone]

Re: 155 Degree Temps at end of Track

Hey James, I'm not sure what brand of coolant it was. I'm a Noob and have just had the Sy since late December and am going through it and cleaning things up.

It appeared to be a pre-mix, and was green. I'm not sure who's brand is green, maybe Prestone.

My Sy went through a frame-off resto 500 miles ago, but that was back around 2000, so it could have been in there since then - Yikes!

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

The pump maybe running but is the coolant actually circulating? Kink in the hose? Air pocket?

You feel the coolant circulating through the lines. I looked over everything again, I didn't see any kinks. As for the air pockets, I let it run and circulate for about 10 minutes. No bubbles. Maybe the CAC clogged? I just don't get it. Tomorrow I will be going to Tri State to meet some other Sy/Ty guys/gals at the track. I can't have my Sy running like this!

 

[WyoSyclone]

Re: 155 Degree Temps at end of Track

I guess it could be a pump going bad, but I would think if that happened it would just stop turning, not slow down.
If you have never flushed the IC/CAC maybe it would be a good time to do that - just drain the system, take both hoses off the IC, hook a garden hose up to one and let if flush for about 5 minutes. If the CAC is clogged and the pump is working fine, it could just be circulating coolant around the clogged areas.

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

I guess it could be a pump going bad, but I would think if that happened it would just stop turning, not slow down.
If you have never flushed the IC/CAC maybe it would be a good time to do that - just drain the system, take both hoses off the IC, hook a garden hose up to one and let if flush for about 5 minutes. If the CAC is clogged and the pump is working fine, it could just be circulating coolant around the clogged areas.

This is my next step this morning before I go racing. I just let the coolant drain from the CAC, correct? I changed the coolant last night, then drained it right away. The coolant was not the same color as I put in it! I don't need to remove the CAC from its location, right? Let it bolted in? Sounds, simple.

 

[WyoSyclone]

Re: 155 Degree Temps at end of Track

Hi Vader,
I had my IC and CAC off the truck when I did mine, but you shouldn't have to.

Just take both hoses off of the upper IC and stick a garden hose on the lower removed hose (not the IC). The water should flow through the pump and on out the other hose. If you can't get flow through it, it only takes about 10 minutes to remove the CAC - just four bolts, 2 electrical connectors, and the two hoses.

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

I did that yesterday morning. Water flowed fine. When I was at the GTG yesterday, my temps at the end of the track were 158 and 171! I am seriously losing probably at least 50 HP from the temps.

 

[sy2639]

Re: 155 Degree Temps at end of Track

I did that yesterday morning. Water flowed fine. When I was at the GTG yesterday, my temps at the end of the track were 158 and 171! I am seriously losing probably at least 50 HP from the temps.

Don't feel too bad my MAT temps got up to 185! on my 1 and only run yesterday. I plan on re-routing my lines and moving my Sureflow pump to make room for my Alky Pump. Hopefully that will fix my problems.

Has anything else changed with your tune since you ran faster?

 

[WyoSyclone]

Re: 155 Degree Temps at end of Track

Do you have the stock air intake tube, over the radiator, in place Vader?

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

Don't feel too bad my MAT temps got up to 185! on my 1 and only run yesterday. I plan on re-routing my lines and moving my Sureflow pump to make room for my Alky Pump. Hopefully that will fix my problems.

Has anything else changed with your tune since you ran faster?

I had the truck tuned in October while it was at the track. Its first pass ran the 11.90 without a launch (just mashed the gas) and just 16 lbs of boost. The only thing that has changed is shortly after, I spun a bearing and replace the bearings again. Haven't messed with the tune.

When I pull the Sy out of the garage and IAT are around 60 to 70, the Sy feels like a maniac. That only last for about 5-10 minutes. However, the more you let the turbo spool that faster it heats up.

I want to see how fast my Sy is with race fuel and 25-28 lbs of boost, but I am now frustrated with the whole a2w setup. A2A would be so much simpler. I hate to throw the towel in since I wanted to max out my current setup. Not to mention all the trips to the local meijer to get coolant for the intercooler! I think I have stock in Prestone.

Another fellow yesterday was telling me to use straight water in the intercooler. Anyone tried that?

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

Do you have the stock air intake tube, over the radiator, in place Vader?

No. I have the ATR intake box.

 

[Six-is-Enough]

Re: 155 Degree Temps at end of Track

I had the truck tuned in October while it was at the track. Its first pass ran the 11.90 without a launch (just mashed the gas) and just 16 lbs of boost. The only thing that has changed is shortly after, I spun a bearing and replace the bearings again. Haven't messed with the tune.

When I pull the Sy out of the garage and IAT are around 60 to 70, the Sy feels like a maniac. That only last for about 5-10 minutes. However, the more you let the turbo spool that faster it heats up.

I want to see how fast my Sy is with race fuel and 25-28 lbs of boost, but I am now frustrated with the whole a2w setup. A2A would be so much simpler. I hate to throw the towel in since I wanted to max out my current setup. Not to mention all the trips to the local meijer to get coolant for the intercooler! I think I have stock in Prestone.

Another fellow yesterday was telling me to use straight water in the intercooler. Anyone tried that?

I have ran a 80/20 mix before water -antifreeze. I would imagine straight water would be fine just make sure it doesn't freeze in the winter time!

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

I concern would be the water getting into the overflow tank. Possible?

 

[Six-is-Enough]

Re: 155 Degree Temps at end of Track

I concern would be the water getting into the overflow tank. Possible?

Yea possible, but I would think it would be that big of a concern. I really think you have a problem with something else other than the IC. That is making your MAT's go up. Turbo...:tdown:

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

Yea possible, but I would think it would be that big of a concern. I really think you have a problem with something else other than the IC. That is making your MAT's go up. Turbo...:tdown:

I'll dig into to it tonight when I get home from work. I'll let you guys know.

 

[Vaders Sy]

Re: 155 Degree Temps at end of Track

I went out this morning to go for a run, but before i did I popped the hood and looked into the intercooler. The coolant was not covering all the fins. It looked about half full. I haven't driven it from Saturday. When I got home on Saturday night, the intercooler was full. Now it is not. Heat expanding? Maybe someone could shed some light?

 

[sy2639]

Re: 155 Degree Temps at end of Track

I went out this morning to go for a run, but before i did I popped the hood and looked into the intercooler. The coolant was not covering all the fins. It looked about half full. I haven't driven it from Saturday. When I got home on Saturday night, the intercooler was full. Now it is not. Heat expanding? Maybe someone could shed some light?

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