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1961 thunderbird exhaust3/18/2024 The edits we're working on right now for the OFS have a chronology of numbers for both the "Z" and "M" versions as follows (casting-engineering #/parts catalog #): note that I haven't listed all the replaced/superseded numbers in the interest of brevity. The "M" vs "Z" exhaust manifolds for '63 has been confusing for quite some time. It's a great book, but not infallible.Ian: I'd love to use those photos in the OFS revisions we're working on. There are mistakes that have been uncovered since that was written. Not a big deal.īTW, don't take everything you read in the Thunderbird Restoration Guide as gospel. You'll need an adapter to get up to two inch exhaust pipes from your 1 3/4" H pipe. That's a 2 inch H Pipe, which mates with (slips inside) 2 inch exhaust pipes. I'm not sure where you're seeing a flare in the pipe I show in that photo. I agree that a 2" dual exhaust system is preferable to a single exhaust, and that's exactly what I'm doing with my convertible, using the "conversion" exhaust system, as discussed in the other thread. I know others will jump in here and say their cars have it, but that's just my personal experience. I'm aware of the possible dual exhaust configuration on later '63's, but I've personally never seen one. If your car has the bevelled C3SE manifolds that use donut gaskets, it was a originally a single exhaust car. ![]() I would like to keep the dual exhaust option to increase power. Since it said most cars that would mean that there were still some cars with single exhausts. It sounds like the rationale was to use up the inventory of dual exhaust components that had been targeted for the 6 barrel 390s. It indicated that after March/April that most '63 cars had dual exhausts. I have another book Thunderbird Restoration Guide 1958-1966 that Alan had also contributed to. Regarding references for exhaust systems: my VTCI book on Factory Specs has a blank page marking for future release describing the various exhaust options. Both our cars are on the last few weeks of production. The link does show a nice flare to go to a 2" pipe that would cut some turbulence at the joint. Its also only has about 4000 miles of use with it. Jim, I was keeping the current H pipe to save a couple hundred dollars in parts/labor. I am not an exhaust expert just going by what I have read. There dont seem to be any aftermarket ones matched with the 62 mufflers.ĭoes this 2 inch design make sense or am I missing something. I also don't know how to get one that would be tuned for the frequency that the exhaust on the 63 produces. I don't know if the resonator is necessary but I guess it would help on cutting down some sound frequencies. The straight 1 3/4" system of the 62s I am thinking would provide less power since it has more constriction than a 2" pipe. ![]() The 2 inch inlet 1 3/4 outlet muffler was also closer in size to what the original car had. ![]() I was thinking of expanding to 2" at the H pipe instead of at the muffler to give less back pressure from the 6-8 feet of having a smaller line and therefore provide slightly more power. I am thinking of going to the 2" system and putting the adapter from 1 3/4" to 2" just past the H pipe and running 2 inch line from there to the mufflers that would be mounted on the outside of each rear spring closer to the rear bumper. I want to preserve my H pipe and rebuild back from there. Each system has a right and left muffler which are slightly different design from each other. The other is the dual exhaust 62 system with 1 3/4" inlet and outlet Mufflers plus resonators. The first is the 61 and 62-63 Tripower which has 2" pipes and 2" inlet muffler and 1 3/4" exit. This is a late 63 that would have come with dual exhaust as standard equipment.įrom what I have read there are 2 types of muffler setups on the aftermarket to fit my system. The glass packs make a nice sound but I am ready to have a quieter car and also be in a better scoring position at the regional convention judging this summer. It has a 1 3/4 H pipe and 1 3/4' tubing from the exit of the glass packs to the bumper. The car has a dual exhaust system with glass packs mounted underneath in the center of the car. Its time this spring to change out the exhaust system on my 63 to something closer to the original design.
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