Coolant line failure on track
#17
i've seen those larger hoses pop off a few times. Usually the metal clips fatigue and then the hoses just pop off. We safety wire all those coolant fittings on the race cars. It's a easy job that can be done at home, it's just a little time consuming to properly safety some of them.
#18
Nordschleife Master
Rob, I was thinking the same thing. I had one hose pop off two years ago, on the first short drive, after I put the engine back in, so obviously operator error; ME. Put the hose and clip back in and have never had an issue since.
Not saying it can't happen, but would certainly like to know more.
Not saying it can't happen, but would certainly like to know more.
#19
Race Car
Rob, I was thinking the same thing. I had one hose pop off two years ago, on the first short drive, after I put the engine back in, so obviously operator error; ME. Put the hose and clip back in and have never had an issue since.
Not saying it can't happen, but would certainly like to know more.
Not saying it can't happen, but would certainly like to know more.
However, I too put my car back together with the clips in the wrong orientation the first time i took it all apart and the hoses popped off on test drives the first 3 times I took it out before I figured out that the clips are slightly different.
Here's the thread on the hoses splitting and the reason I replace every 2 years. I've seen this 3-4 times over the years. Small price to pay to replace these often to insure there are no issues.
https://rennlist.com/forums/996-gt2-...hose-blew.html
#20
Nordschleife Master
To ensure that the message is clear (no false sense of security):
My clips were in the correct position, but one was not seated properly, so don't assume that if you have the right clips, they are in correctly.
I think that Porsche says to put the clip in its slot and to then to put the hose in the hole; it will click in to place.
My clips were in the correct position, but one was not seated properly, so don't assume that if you have the right clips, they are in correctly.
I think that Porsche says to put the clip in its slot and to then to put the hose in the hole; it will click in to place.
#21
Rennlist Member
Jean sorry to hear you had this issue, I saw the car on jackstands but never got over to talk to you. That is why I had all of mine welded after two track failures years ago. Hope to see you at Buttonwillow in a few weeks.
Mike
Mike
#22
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that actually may be my handy work there, and thanks for the pic! It's an extra safety step that we take to ensure we don't blow a motor. It may not be super common on street cars, but i've experienced it on cup cars. As you can see there are 2 safety wires run. One is a small one that slides front to back in the small recess where the hose attaches to the receiver. The second wire runs around the circumference of the hose and over the clip to ensure it will not pop off. I will try and get some better pics this week
#23
Burning Brakes
I had one of those main coolant pipes burst at the track a while back- the fittings were fine it was just a hose burst. I replaced both of them immediately, the car was about 5-6 years old when this happened.
#25
Car is all put back together and ready for next event. I guess I have an hybrid of pinned and welded... 6 pinned and 2 welded. As discussed in thread, I'm having the 2 big hoses checked and make sure metal clip is installed correctly. Hopefully all goes smooth from now on. All rubber hoses were replaced last year and all still looks fresh and good.
Here's a pic of the welding job just done on the 2 connections that were missed the first time around.
#26
Instructor
Make sure that you didn't damage the flat surface where you clamped the manifold. Mine is leaking oil from there under track conditions, likely due to either damage or improper assembly.
#27
Addict
Rennlist Member
Rennlist Member
I bought my car from fellow back in the spring of 2009. Included with the spares were a pair of large OEM radiator hoses. The seller explained that he changed the hoses as part of his regular maintenance, no mention of any trouble with the coolant system.
Jump ahead 8 years and I am addressing the coolant issues that we have become familiar with.
I remove the power steering pump and inspect the coolant hose fitting. I discover that I am not the first to address this issue. The fitting circled below has a different epoxy than the other fittings. I suspect my car suffered from a coolant hose failure at some point prior to my ownership. That would have been a handy piece of information to have, must have slipped the previous owner's mind.
Jump ahead 8 years and I am addressing the coolant issues that we have become familiar with.
I remove the power steering pump and inspect the coolant hose fitting. I discover that I am not the first to address this issue. The fitting circled below has a different epoxy than the other fittings. I suspect my car suffered from a coolant hose failure at some point prior to my ownership. That would have been a handy piece of information to have, must have slipped the previous owner's mind.
#28
Rennlist Member
I bought my car from fellow back in the spring of 2009. Included with the spares were a pair of large OEM radiator hoses. The seller explained that he changed the hoses as part of his regular maintenance, no mention of any trouble with the coolant system.
Jump ahead 8 years and I am addressing the coolant issues that we have become familiar with.
I remove the power steering pump and inspect the coolant hose fitting. I discover that I am not the first to address this issue. The fitting circled below has a different epoxy than the other fittings. I suspect my car suffered from a coolant hose failure at some point prior to my ownership. That would have been a handy piece of information to have, must have slipped the previous owner's mind.
Jump ahead 8 years and I am addressing the coolant issues that we have become familiar with.
I remove the power steering pump and inspect the coolant hose fitting. I discover that I am not the first to address this issue. The fitting circled below has a different epoxy than the other fittings. I suspect my car suffered from a coolant hose failure at some point prior to my ownership. That would have been a handy piece of information to have, must have slipped the previous owner's mind.
#30
Rennlist Member
I had one go. It was a center radiator hose and I had been rough driving before it happened (jumping curbs and all) so, getting bumped around and a lot of vibration.
I had never thought of safety wiring them (before now). Great idea.
Also, for the hose ends. I know that most folks either just pin or weld in the factory fittings, but we sell a neat product by Torque Solutions where they have made machined ends which have a larger diameter ring so it makes them a easier to weld (also the grade of aluminum that they chose is more correct for welding)
They are turned from billet rather than formed from round tube like the factory.
Here is a link to the item.
http://www.demonspeedmotorsports.com...TS-POR-001.htm
Thanks
Ed