Salafist Nour Party chairman Younes Makhioun confirms ideological disagreements with Muslim Brotherhood, but does not hold them responsible for internal splits.
Jama’a al-Islamiya and the Construction and Development Party are discussing plans to celebrate the new Constitution and show their support for Morsy.
Salafi Dawah vice president Saeed Abdel Azim called on sheikhs and preachers to leave politics out of the mosque.
Following internal party election on Thursday, 53-year-old Alexandrian Hussein Ibrahim becomes new secretary-general of Muslim Brotherhood's FJP.
Party leaders say internal elections are underway while scores of members continue sit-in for fifth day to demand resignation of unelected party figures.
Dissenters from the Muslim Brotherhood are planning to establish a preaching association tentatively called Revival and Renewal, said former Brotherhood member.
Emad Abdel Ghafour announced the establishment of the party on 1 December after resigning from the presidency of the Nour Party.
Egypt's newest Salafist party welcomes an electoral alliance with other Islamist forces—including rival Nour Party—but rules out cooperation with secularists.
The Nour Party will not ally with either the Muslim Brotherhood’s political party or the one being formed by controversial preacher Hazem Salah Abu Ismail.
The FJP on Wednesday welcomed international supervision of the upcoming parliamentary elections, dismissing allegations of election rigging in the past.