Yes, you can replace the coolant crossover line. Install a barbed fitting and you can use heater hose.Is there any reason I cannot replace the heater hose that is the metal one from the thermostat crossover to the heater core. also does anyone know what size heater hose it takes at the heater core, It looks a little bigger to me..
My is leaking at the heater core, so I was wondering if I could run 3/4 hose from the heater to core up to the quick connect, replacing that entire metal line.. I have read that line has to be restricted so it does not blow out the heater core.Yes, you can replace the coolant crossover line. Install a barbed fitting and you can use heater hose.
Heater hose size: Heater hose sizeHi guys, I have a '99 burb and a '95 Tahoe - I've noticed that the last couple of months there seems to be some 'weeping' of coolant from what appears to be a 'quick connect' aluminum pipe located on the passenger side of the engine bay, near the top. Both vehicles seem to be suffering from...www.dieselplace.com
Thank you JMJ I was reading up on it and I kept see things that the hose goes from 3/4 to 5/8 to restrict it so it did not blow out the heater core, but that doesnt make sense to be me because it is an input to the heater core which starts out as 5/8 at the quick connect then goes into a 3/4 hose at the heater core.. I just ordered a new hose made for the truck..I have replaced that heater hose that you are talking about.
The quick connect is replaced with a NPT to barb connector.
I think it is 1/4 inch NPT IIRC, you need to verify.
There is also a GM part no for that part used in old impala.
It should be in the FAQ.
Well if you put a tape measure up the threads on this thing is says 5/8 to me. The half inch one I bought that everyone is saying is way to small and goes right inside the fricken holeThe threaded end is 1/2" npt.
It measures about 5/8" on the outside.
5/8" pipe thread does not exist.
I understand that, but when you are looking for the correct thread size that does not help me,, so when someone says they dont make a 5/8 pipe thread and I went and bought one it causes more confusion as I stated before in this thread..NPT pipe thread is named by the inside diameter of the pipe.
Thank you I got one at O Reilly's seems to be doing good so far drove it like 40 miles yesterday Thank you for all your help JMJnetThis is the GM part no for 1/2" NPT to Barb connector, just in case you need it:
Well, it is actually Amazon link:
Buy GM Genuine Parts 15-33220 Heater Water Flow Control Valve: Heater Control Valves - Amazon.com ✓ FREE DELIVERY possible on eligible purchaseswww.amazon.com
I am looking at putting a new optimizer 6.5 in it here a 3 or four months not a rebuild but a new from Leroy's Diesel. I have been reading up on some of the upgrades he suggests too. I would rather put 20 thousand into this truck than going out an buying a new one for 60-100 thousand then end up with issues on a used one then the payment of a new one..You will have one less thing to worry.
It is starting to get quite a bit of blow by,, I have used restore in it and it has helped. I am not putting the motor in it. I have a place that did a friend of mines dump trucks and he did a very good job, but before I do anything I will be talking to both Leroy and this other place as well as the mechanic.If I were you, if the truck runs good, I will drive it and leave it alone.
There is no guarantee that new engine will be even good.
Nothing against Leroy, just a fact that a project of this endeavor has not guaranteed that the truck will be better.
It is not a simple matter of removing an engine and putting a new one.
Knowledge and experience are very important in successful project.
It is up to you, though.
That leaky coolant x-over is a minor issue and everybody have to deal with that in this truck and also the gasser. LOL!!!