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  1. #1
    Member
    Join Date
    Apr 2008
    Location
    Bolivar, MO
    Posts
    196

    250 HPDI and 27P T1 Vmax prop

    Question, I am currently running a 25p T1 SHO prop on my HPDI. I had Hydrotech marine mill some vent holes into the prop. Prop runs great, but I want to try a 27p T1 vented vmax prop. When I went to change props the other day there appeared to be a second washer stuck inside the hub of the 25p T1. I didn’t realize it until i put the 27p on and the locking nut where the cotter pin goes through, threaded on too far and appears to need another 1/4in washer or so, as to allow the cotter pin to lock into the grooves of the nut. I couldn’t for the life of me get the space washer out of the 25p so I don’t know if it’s welded in there or just stuck. So do I need two space washers to run this prop? With the 27p I have a thrust washer-prop-spacer/washer-flat washer then the nut and cotter pin. I am assuming I need another space washer in there? Sorry if this seems like an unclear post but I hope someone understands and can help. What part number on the washers? Thanks in advance.

  2. Member
    Join Date
    Feb 2018
    Posts
    3,195
    #2

  3. Member
    Join Date
    Jul 2016
    Location
    Dubuque ia
    Posts
    2,296
    #3
    Need to pry off that washer. They get stuck on there sometimes. The 27t1 will be the right prop. I run a 27t1 and a 28t1 on my 250hpdi with an 03 tr21.

  4. Member
    Join Date
    Apr 2008
    Location
    Bolivar, MO
    Posts
    196
    #4
    Running it on a 2012 Ranger Z520