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Thread: 3.5Ltr V8 on gas

  1. 9th July 2004, 07:26 PM #1
    Larns's Avatar
    Larns
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    3.5Ltr V8 on gas

    Folks
    I'm going to be installing an LPG system on a friends Stage 1 ute, now I would normaly send the head/s away to have stainless valves and hardened inserts installed. But seeing's as the head is alloy and already has inserts it poses the question, dose it already have stainless valves?
    And dose anyone have a download of the 3.5's spec's for me to work off,
    and how much would he be looking at for replacement elec. ignition?


    Cheers Larns
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  2. 9th July 2004, 07:52 PM #2
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    LandyAndy
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    Hi Larns
    If the motor is a ULP spec motor there shouldnt be a LPG problem,as you say being alloy all should be hardened allready.
    Landyandy
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  3. 9th July 2004, 08:09 PM #3
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    Andrew
    True, but havn't a clue weather it's been rebuilt for unleaded and I'm pretty sure nun of the Stage 1's were made to run on unleaded.
    By the way your stuff got posted on Wed/Thu(this week has been a blur can't remember which day it was). An your letter arrived today, cheers.


    Any one got a single plane manifold for a 3.5Ltr??

    Cheers Larns
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  4. 9th July 2004, 09:50 PM #4
    trebor110
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    G'day
    I had a 110 V8 converted to LPG many years ago, the system had 2 gas inlet mixers. These were fitted between each carby & the air intake elbow. The results were good with minimal power difference between petrol & LPG.
    The problems only started after about 50000k's, these were difficulty starting when hot. Compression tests revealed that all cylinders were down. After strip down the original piston rings were as soft as butter, the rings could almost be straightened out. So if the motor is striped down then consider using cast rings as apposed to chrome molly.
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