An international yachting jury today disallowed protests by both sides of Sunday's America's Cup race.

Thus the victory by U.S. defender Freedom stands and the Americans retain their 2-1 lead in the best-of-seven final Cup series.

The skippers of Freedom and the challenger Australia had contended that during the race the other side flew its spinmaker free, instead of attached to a spinnaker pole as required by the rules.

The jury found that Australia had indeed flown her chute free while rounding a mark on the course, but that while the length of time was "toward the upper limit," the jury did not feel the duration constituted an infraction. tAustralia's spinnakers flew free for about 16 seconds, they said.

The protest against Freedom charged that she flew a detached chute for about 1 1/2 minutes while her crew was scrambling to straighten out a series of foredeck troubles.

The jury's ruling stated: "It seems clear that the spinnaker could not have been lowered . . . nor could it have been let fly without risk of total wrapping about the foreplay."

So far in three races in the final series three protests have been filed, and it seems likely that protests will continue to play a significant part in the series.

In the past protests in these important important races have rarely been unpheld unless the alleged infractions had a clear impact on the results of the race or if the boats collided.

The jury heard from both skippers and watched video replays of the incidents this morning. Later both yachts were at sea for sail testing. Australia had requested a day off from racing today. The series resumes Tuesday.

Also today a British synidcate headed by London banker Peter deSavary announed its intention to mount a Cup challenge in 1983. That makes two challenges already in the works. Several weeks ago, a French syndicate headed by filmmaker Yves Rousset-Rouard announced it had bought the yacht France 3 from Baron Marcel Bich and would mount a challenge in 1983.