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Thread: Sheered manifold bolt - Is this bad??

  
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    Sheered manifold bolt - Is this bad??

    Hi Guys,

    I had my engine given the once over the other day and it was found that there is a sheered manifold bolt.

    The guys said that it was down pretty deep and couln't take it out using conventional methods

    Is this going to be affecting the car's running? I'm noticing the car being a little lumpy when cruising on the motorway when going on the power (could this be that too much air is being sucked in?) Also as a consequence, could the ECU be compensating by pumping in more fuel as it has become very thirsty lately?

    Any help would be grateful

    Thanks
    Silver Lightning Linea Rossa coupe

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    Anyone?

    Not sure if I should bother with the hasstle but if it affects the car then I will definitely do it just need to know if I should!

    Ta
    Silver Lightning Linea Rossa coupe

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    Exhaust or inlet mate?

    If its the inlet the car would be over revving as there would more than likely be a vacuum leak

    If it is the exhaust manifold, depends which one has gone, if it is one of the very outside bolts then it shouldn't be a massive problem, if it is any of the one between the exhaust ports, then you will have a leak, and it will make like a tapping noise
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    i have a snapped mani stud ( far right when looking at engine )and have had for around 6 months
    i notice a little rasp for fisrt minute or so then it goes as mani expands with heat

    hope this helps

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    Quote Originally Posted by Toms1989 View Post
    Exhaust or inlet mate?

    If its the inlet the car would be over revving as there would more than likely be a vacuum leak

    If it is the exhaust manifold, depends which one has gone, if it is one of the very outside bolts then it shouldn't be a massive problem, if it is any of the one between the exhaust ports, then you will have a leak, and it will make like a tapping noise
    ^ what this man said . If its on the inlet side some instant gasket round the leakey area will sort it out. Obviously this isnt an option on the exhaust side but again, when it gets hot it should close the gap up anyway
    It would definitely go better with an engine in it

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    Ah,

    Its on the outlet side and is the first bolt on the left side of the block.....

    Will this be causing excessive fuel consumption?

    I had the car lowered 60mm and didn't get the wheels re-aligned would this have more of an affect on fuel than the snaped bolt?

    Thanks again
    Silver Lightning Linea Rossa coupe

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    Quote Originally Posted by astra 2.0 View Post
    Ah,

    Its on the outlet side and is the first bolt on the left side of the block.....

    Will this be causing excessive fuel consumption?

    I had the car lowered 60mm and didn't get the wheels re-aligned would this have more of an affect on fuel than the snaped bolt?

    Thanks again
    I wouldnt have thought it would make any difference. Im missing one off each end and its still OK.

    As for the fuel consumption it could be literally anything but bear in mind as it gets colder your car will use more fuel anyway to compensate for the denser air
    It would definitely go better with an engine in it

    ZLET converted SXi See Here

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