Results 1 to 15 of 15

Thread: Cracked cylinder wall

  1. #1

    Cracked cylinder wall

    so i was re doing my cooling system on my jeep today and i pulled off my thermostat housing. it looks like that first cylinder wall has a huge "C" shaped indentation or crack in it? has anyone else ever seen this or am i in big trouble?

  2. #2
    Less posting, more wheeling!
    Join Date
    Apr 2007
    Location
    Pgh, south hills
    Posts
    1,831
    time to shop for another engine, have you done any compression tests to confirm its a crack? theres always the option of resleaving but a replacement is cheaper.

  3. #3
    PghOffRoad Forum Addict! PatF10's Avatar
    Join Date
    Jul 2005
    Location
    South hills
    Posts
    815
    sure its not just casting marks? if there was a large crack there would be oil in coolant or coolant in the oil. That or some indication that you were burning it in the cylinder.
    74 cj5. 360 powered!
    F150 ecoboost. Tow rig when I finally get a trailer

  4. #4
    PghOffRoad Forum Addict!
    Join Date
    Oct 2006
    Posts
    529
    Like PatF10 said check it for coolant in the oil, oil in the coolant, and the spark plug for a green tint meaning it's burning antifreeze. Also is the engine smoking or showing other signs of a crack. It's usually pretty obvious especially if you say you can see the crack with the naked eye. Did you happen to take pics? If you think it's cracked and you didn't put it back together yet trying snapping a pic so others can see what you are looking at. I would think if it's cracked you have noticed other things like smoke and coolant in the oil.

  5. #5
    Less posting, more wheeling!
    Join Date
    Jul 2009
    Posts
    2,769
    Quote Originally Posted by sethman15210 View Post
    time to shop for another engine, have you done any compression tests to confirm its a crack? theres always the option of resleaving but a replacement is cheaper.
    depending on how well you know your way around an engine (can you tear it down to the block yourself and rebuild it?) and how much you can find a good new one for, id look into getting it bored and sleeved first.

    fuggit, somebody has to do this 350 swap ive been going back and forth on, wanna be a guinea pig? LOL
    96 xj rust
    some old chevy rust

    and a dirtymax



    "If i diddnt have bad luck, i wouldnt have any luck at all"

  6. #6
    its just a casting mark. once i got it under some good light i could tell it wasnt cracked. im considering doin a 4.9 stroker swap. i want to keep it jeep, i hate chevy and i wouldnt put one of their motors in my jeep. also i know my way around an engine pretty good, i learned more than enough at rti

  7. #7
    Less posting, more wheeling!
    Join Date
    Jul 2009
    Posts
    2,769
    i wanna do a 350 because i can do an entire rebuild of one in about a day and a half haha, never been the biggest fan myself.

    ive been thinking about building a stroker but i keep hearing different opinions on what will work from different people.

    and by RTI do you mean rosedale?
    96 xj rust
    some old chevy rust

    and a dirtymax



    "If i diddnt have bad luck, i wouldnt have any luck at all"

  8. #8
    PghOffRoad Forum Addict! MemorEsto's Avatar
    Join Date
    Oct 2006
    Location
    Corry, PA
    Posts
    1,454
    Quote Originally Posted by bigfootcherokee View Post
    its just a casting mark. once i got it under some good light i could tell it wasnt cracked. im considering doin a 4.9 stroker swap. i want to keep it jeep, i hate chevy and i wouldnt put one of their motors in my jeep. also i know my way around an engine pretty good, i learned more than enough at rti
    You better go back to RTI if you have to come on here and ask if you're engine is cracked when you see a cast marking. You'd rather spend $$$$$ trying to get 4.9 out of a inline six than put a proven crate 350 in?
    Acer Offroad A♦A♣A♠A♥

  9. #9
    well where the mark is it feels cracked and looks cracked but its just the way the light hits it. mistakes happen so bite me. id rather spend 4g on a titan engine 4.9 stroker than put some garbage ass chevy 350 in my jeep. yeah i did go to rosedale

  10. #10
    PghOffRoad Forum Addict!
    Join Date
    Feb 2008
    Location
    Dawson, PA
    Posts
    621
    Quote Originally Posted by bigfootcherokee View Post
    id rather spend 4g on a titan engine 4.9 stroker than put some garbage ass chevy 350 in my jeep.
    props for keeping it Mopar... i love GM, (i have 3 compared to my 1 Mopar) but the SBC 350 is just an excuse to say you have a V8. with stock heads, exhuast, an intake they dont even match the torque of a 318. HP is a different story, but GM is and always will be about performance (hi RPMs), IMO.
    95 ZJ-318, 46RH, 249, 1"lift on 32" BFG MT
    01 Yam Raptor 660R-Hinson basket, Hot Cams, ProCircuit, GYTR Clutch
    01 Yam Raptor 660R-777, HotRods +4 crank, Wiseco 11:1 piston
    02 Hon Foreman 400-500 top end, plow, winch, 29" ITP MudLites, disc brake swap
    89 Hon FourTrax 300
    01 Impala LS-Top swap, 31# injectors, tune, shift kit, TripleTreds
    99 Saturn SL2-1.9DOHC, full exhaust, re-map, 38 MPG
    95 Olds Cutlass Supreme-3.1, race ECU, 3800 perf cam, forged pistons, TripleTreds, 12.98 best at PRP

  11. #11
    Less posting, more wheeling!
    Join Date
    Jul 2009
    Posts
    2,769
    Quote Originally Posted by bigfootcherokee View Post
    well where the mark is it feels cracked and looks cracked but its just the way the light hits it. mistakes happen so bite me. id rather spend 4g on a titan engine 4.9 stroker than put some garbage ass chevy 350 in my jeep. yeah i did go to rosedale
    ...why not build your 4.0 into stroker for 1g at most instead of pumping out 4g to have somebody else do it?

    and why so much hate for the 350?

    i got to rosedale right now BTW
    96 xj rust
    some old chevy rust

    and a dirtymax



    "If i diddnt have bad luck, i wouldnt have any luck at all"

  12. #12
    Less posting, more wheeling!
    Join Date
    Sep 2007
    Posts
    2,543
    Quote Originally Posted by Sloth_Fratelli View Post

    and why so much hate for the 350?
    because 'everyone has one'.
    2004 Mazda Miata
    1974 Chevy Chevelle

  13. #13
    Not that I am supporting the SBC, but.

    78-83 the stock 4cyl was the Chevy Iron Duke 151.
    83-86 the stock V6 was the 2.8 Chevy
    64-71 the factory V8 and V6 options were Buick engines.

    Now that said, I did rebuild an AMC engine to keep my AMC era Jeep semi factory. But if it came with either the Chevy or Buick options, I would have went that route.

    My CJ-7 years back did get a 455 Pontiac.
    72 Jeep Commando, 401, Auto, Swampers, Locked...

  14. #14
    Less posting, more wheeling!
    Join Date
    Sep 2007
    Posts
    2,543
    Quote Originally Posted by commando72 View Post
    My CJ-7 years back did get a 455 Pontiac.
    pics dude, pics! that sounds sick!
    2004 Mazda Miata
    1974 Chevy Chevelle

  15. #15
    i just want a motor that is proven so i can do a quick weekend swap. i dont have the time or another vehicle to be missing mine. i just graduated from rosedale back in january, i was so glad to get out of there, it was goin down fast.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Frame rail cracked tonight.
    By Mykal in forum Fabricator's Corner
    Replies: 13
    Last Post: 05-06-2010, 07:12 PM
  2. Cracked manifold = 02 sensor problem?
    By yamadog257 in forum General Off-Road Discussion
    Replies: 8
    Last Post: 08-06-2008, 08:26 PM
  3. Exhaust manifolds...cracked!
    By trailblaze in forum General Off-Road Discussion
    Replies: 8
    Last Post: 03-22-2008, 11:18 PM
  4. Off the wall builds
    By Xplodedin in forum General Off-Road Discussion
    Replies: 17
    Last Post: 12-18-2007, 03:17 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •