Re: {Chrysler 300} The Original Problem

Guys:

Somehow, my original problem concerning engines with the copper heat tubes under the rams got side tracked. So here is the original problem, which concerns engines built with these pipes. The driverâ€™s side pipe and the orientation of that pipe at the rear of the engine has two different configurations. George Hiller and I have pipes, where the segment of the pipe that connects to the heater box is straight up and down, 12 o-clock. Jean-Yvesâ€™ engine and Bob Merrittâ€™s engine have pipes where the rear segment of the pipe points towards the brake booster, say the two o-clock position. The straight up and down position creates a problem. The heater hose must immediately bend 90 degrees then do a loop up to the heater box. This results in restricted coolant flow, because the hose canâ€™t achieve these bends without being pinched off.

So who can say why there are two versions, was there an engineering change, was there a vendor change? Itâ€™s obvious that the pipes that point towards the brake booster are the better version. Here is my solution to the problem. I purchased a hose with a preformed 90 degree bend and a brass connector and used these pieces to connect to a piece of 5/8 power steering return line. Even with the brass connector heading close to the correct direction, I found that the regular heater hose wanted to flatten out, while bending up to the heater box. The power steering return hose has a more robust side wall and resists flattening out and pinching off. If you are interested in this subject, could you please look at the orientation of the driverâ€™s side pipe on your car, let me know if it is 12 or 2 and your engine build date. Mine is March 22.

If your engine did not come with the copper pipes, I would defer to the hose routing on Gillâ€™s convertible. See the pictures that Noel posted today.

300ly

bill

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