1972 Buick GS 350 I know that we discussed this subject sometime ago. Here I go again. I purchased, from Cars, heat pipe HP7048. This pipe (metal flex pipe wrapped by black paper) will not fit. The inside diameter is too small. Looking at Dorman 96034, it would appear to be identical to HP7048 (metal pipe wrapped by black paper) and thus would not fit - yes or no? Several years ago, I purchased two Dayco 80104 heat pipes from a nearby speed shop. They have a tough paper pipe wrapped by a black paper. This pipe fits. Now I cut the pipe longer than necessary, as the pipe at the manifold end deteriorates and has to be cut back and the pipe reinstalled. Comments?
I purchased one of the Dorman 96034 pipes and it is a super tight fit on the air cleaner side. I used my fingers to slowly stretch out the end fitting on the air cleaner. So far, so good. I don't cut the pipe.
Did you check Rockauto? https://www.rockauto.com/en/catalog...id+v8,1379707,fuel+&+air,pre-heater+hose,6358 I got all my Moog bushings for the front of my car. They had the lowest prices of anyone.
2" X 18" is the correct one. Unfortunately, all of those are aluminum finish. The black finished ones look so much better IMHO. They are hard to find though.
The receivers - manifold & breather are just slightly over 2" being about 2 1/32. That is why the metal lined tubes do not fit.
Use the BRIZ PIPE; who in the heck decided to use paper wrapped aluminum flex hose at the drawing table. This is a BUICK; not some ol' dodge... ws
It keeps the air inside the air cleaner at approximately 115* so that leaner mixtures can be used. It also helps with cold weather operation.
With today's crappy gas last thing you need is intake heat. Consider it for appearance only. If you want to leave it for stock appearance I would disable by plugging vacuum so you get cool air all the time.
Supposedly, that is what the cold air intake flaps in the air cleaner horns do. After a warm up they should stay open, but mine are disabled. ws
The snorkel flap works on vacuum from the sensor in the air cleaner. With no vacuum. the door is wide open. The sensor input gets manifold vacuum. It outputs a modified vacuum signal that varies the door position to keep the air inside the air cleaner at about 110*. When you start a cold engine, the door is fully closed to draw air past the exhaust manifold, and into the air cleaner. As the engine warms up, and under hood air is drawn into the snorkel, the door position varies to keep the air temperature at 115*. At WOT, vacuum goes to 0, and the door will go full open.
I ordered a DORMAN hose from eBay six bucks and change on eBay. Perfect I needed it for my engine I'm building. Thanks again team V8BUICK
