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  1. #1
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    Angry Blue 308 Problem

    I have a blue 308 i purchased 2nd hand refreshed and when i got it home started putting on a new oil pump carbie and a few other bits to get bit ready for a dry start. I had it up to the stage of taking the plugs out and turning it over to make sure it was on top dead centre on #1 , when i put a breaker bar on the crank pulley i couldn'T budge it. locked tight and I thought oh no what have I brought here! Loosened all the rockers off just in case the cam was way out of whack and tried again with no luck so I tipped it over and removed the sump thinking maybe the rope seal was binding so i backed all the main caps off one by one trying to turn it over between each one with no luck. I then studied the big end caps and noticed they had been numbered but they were numbered in this order...#1,#2,#3,#4,#6,#7,Blank,#8 so I loosened #5 and #no number? off and i was able to turn it over... Is this because the caps have been miss matched to the rods? The crank has the original main and big end bearings in it still so would i be better to rip it right out and get it reground and the conrods checked and resized or whatever needs doing as i really don't know what's been mismatched.
    I am an older person who had a bit to do with rebuilding my own 308's many years ago so i have forgotten more than i knew back then so any help would be greatly appreciated.

  2. #2
    been here .......too long Smitty2's Avatar
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    ...post moved to correct area


    and welcome
    __________________________________
    ONE OF THE Aussie V8 MODERATOR/ADMIN TEAM
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    Club circuit racing...the best fun you can have with your pants on

  3. #3
    casual poster Willie's Avatar
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    If it was mine I'd pull it the rest of the way down and get it checked.

  4. #4
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    Yes it's a bit of a worry alright but any advice would give me some ideas maybe

  5. #5
    Part of the furniture
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    HI
    There are dodgy backyarders around . Currently have 308red incorrectly bored out and rods were incorrectly marked . Sent to a shop and the big ends were oval . Although the big ends bearings were some of the worst I have seen .

    Robot is there oil in cylinders =hydro locking ??

    Gunna cost u a gasket set and may be a ring set . Engine needs inspection and measuring

  6. #6
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    Hi Swampy
    I was wondering if I should pull it all the way down and get the rods and crank checked/ground and fit new bearings etc particularly due to the missmatching of Caps etc.
    It is also supposed to have new gapless rings fitted to the secondhand piston out of it plus honed the bore. It's bore is out to 60 thou so I don't know what's left in it.
    Can you tell me what cost it would be to have the crank done and a full set of bearings.
    As far as hydro locking go's...No had the plugs out to try and turn it over with no luck to start with.

  7. #7
    Do you ever leave? paulzig's Avatar
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    If the rod caps are mismatched to the rods some may lock out, they are closed and honed as units...

  8. #8
    casual poster kiwiholdenman's Avatar
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    Check to make sure the rods are around the right way,in that the chamfer/relief for the crank fillet radius in the bearings are the right way if that makes sense.

  9. #9
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    Yes two are I think but it all depends on the rods themselves bein in the wrong spot as only the caps are marked and even one of them doesn't have a number on it so I think I am in a bit of a pickle

  10. #10
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    Thanks but how can I tell by looking at them...would you by any chance have a photo so I can see what you mean

  11. #11
    Do you ever leave? EH179's Avatar
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    I think you should take this to a trusted machinist to strip and measure everything, as it sounds like this was slapped together and flogged off.

    As for the binding, i think Kiwi was on the money, with the rod caps in the wrong position and catching on the crank radius.

    Shouldn't cost much for a strip and measure for an informed decision.

  12. #12
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    Thanks Avatar I think you and the other guys are on the money, and yes it was just slapped together I am sure now.
    As soon as I get some more time I will pull it right down and get it checked out proporley.

  13. #13
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    Thanks heaps guys I will give another update when I get it checked out.

  14. #14
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    Sorry guys I am new to this forum stuff so I have replied calling some of you guys avatar not realizing your profile names were above.
    Hopefully I will get better at it.

  15. #15
    Part of the furniture
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    HI
    Remove all pistons 1 at a time
    Mark each cylinder front and cyl number on head of piston [clean the piston head with wire brush etc ]
    once removed rinstall rod cap with bearings

    Std rods will have no numbers
    the caps need to be mounted on the rod the correct way round
    Once u have a correctly assembled rod the cutout on the side is a cam oiler. When installed this side to cam .
    Once that's established
    the caps might be the right way installed but needs matching to its rod . When new they are machined together.
    If mismatched incorrect bearing crush happens bad wear bad oil pressure.


    Getting quotes around 2500$ to high
    new cam bearings plus fitting
    new big ends and mains
    resize rods
    new pistons and rings plus fitting rods on pistons
    bore and hone
    deck block
    clean block
    grind crank

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