Cylinder bore advice

Discussion in 'Mazdaspeed 3/6 Engine' started by Kenjunk, Jan 21, 2024.

Watchers:
4 users.
  1. Kenjunk

    Kenjunk Greenie Member

    Joined:
    Jun 26, 2022
    Posts:
    14
    Trophy Points:
    3
    Location:
    Alberta
    Ratings:
    +2 / -0
    Hello everyone, I have just taken apart my engine rod find out that I have a bent rod and a small chip on the bottom to the bore.
    should I be concerned or can it be repaired. thanks so much to everyone who looks at the thread and comments
    IMG_5270.jpeg IMG_5271.jpeg
     
    Last edited by a moderator: Jan 22, 2024
    Kenjunk, via an iPhone, Jan 21, 2024
    #1
  2. Awafrican

    Awafrican Moderator Gold Member

    Joined:
    Feb 11, 2016
    Posts:
    3,551
    Trophy Points:
    113
    Location:
    Canada
    Ratings:
    +2,822 / -11
    Might be able to have it welded and use a sleeve, that's a question for a machine shop. Unfortunately I don't know any in Berta
     
    Awafrican, via a mobile device, Jan 21, 2024
    #2
  3. Kenjunk

    Kenjunk Greenie Member

    Joined:
    Jun 26, 2022
    Posts:
    14
    Trophy Points:
    3
    Location:
    Alberta
    Ratings:
    +2 / -0
    Thanks for the reply.
    I will take everything to the machine shop and keep my fingers crossed.
     
    Kenjunk, via an iPhone, Jan 22, 2024
    #3
  4. Raider

    Raider Administraider Administrator Platinum Member

    Joined:
    Jan 28, 2016
    Posts:
    6,996
    Trophy Points:
    113
    Location:
    Behind a Keyboard wearing full body armor
    Ratings:
    +8,094 / -12
    That is a gnarly chunk missing. Weld and sleeve, or junk it and get a new block.
     
  5. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

    Joined:
    Feb 11, 2016
    Posts:
    3,153
    Trophy Points:
    113
    Location:
    Earth
    Ratings:
    +3,442 / -19
    Depends on what your goal is. Are you just going to stuff factory rods in there? Then as long as it's not in the area swept by the piston I would consider just running it. If you are going to full build I would address it
     
    Easter Bunny, via a mobile device, Jan 22, 2024
    #5
    • Like Like x 1
  6. Kenjunk

    Kenjunk Greenie Member

    Joined:
    Jun 26, 2022
    Posts:
    14
    Trophy Points:
    3
    Location:
    Alberta
    Ratings:
    +2 / -0
    I have got Manley Hbeam rods, Mahle 4032 pistons,king main and rod bearings, arp main studs. Hoping that the machine shop will have some good advice for me!!
    The chip is very small on the bottom of the bore.
    Not in the ring land at all, just on the fence on what decision I have to make.
     
    Kenjunk, via an iPhone, Jan 22, 2024
    #6
  7. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

    Joined:
    Feb 11, 2016
    Posts:
    3,153
    Trophy Points:
    113
    Location:
    Earth
    Ratings:
    +3,442 / -19
    Do whatever the machine shop recommends. They have the tools to diagnose
     
    Easter Bunny, via a mobile device, Jan 22, 2024
    #7
    • Like Like x 3
  8. Kenjunk

    Kenjunk Greenie Member

    Joined:
    Jun 26, 2022
    Posts:
    14
    Trophy Points:
    3
    Location:
    Alberta
    Ratings:
    +2 / -0
    I took my block to the machine shop for them to inspect the lower chip. When the shop owner inspected it he said that there will not be a problem because it is where the bottom of the skit would be and that I am gyro reborebit out to 88mm.
    Got my block back from the machine shop and looks great was about to put the pistons in had ordered King rod bearings form Rockauto through there pull downs for the car, engine and that it is turbocharged.i picked the CR4507XP 50mm journal and guess what they are to small for the crank. Took the crank to the machine shop for measurements and sure enough I needed KING Bearings CR4604XP for a 52mm journal size crank.
    Waiting till the right ones come in now.
    Cheers
     
    Kenjunk, via an iPhone, Feb 10, 2024
    #8
    • Like Like x 1
Loading...

Share This Page

Users Viewing Thread (Users: 0, Guests: 0)