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Thread: Cleveland 302 Carburettor Dies under Load

  1. #41
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    cleveland 302

    Be cautious about clipping all those plug leads together so they look nice and tidy. If they are not spiral wound leads, you will get inductance from one lead to the next, which will fire a plug at the wrong time.

  2. #42
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    Quote Originally Posted by Tombie View Post
    Has it got the Carter Thermoquad on it?
    Fuel guzzling things they are.

    Better off throwing something else on there.

    600 Square bores will do reasonable performance and better fuel economy once set up.
    I think you will find its the fuel pump , it is not keeping up with the engines needs

  3. #43
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    Be cautious about clipping all those plug leads together so they look nice and tidy. If they are not spiral wound leads, you will get inductance from one lead to the next, which will fire a plug at the wrong time.
    Yes you have to cross them over . Look at a LRV8 diagram. I am not sure they are the same firing order but I think they are.
    Regards PhilipA

  4. #44
    Lionelgee is offline YarnMaster Silver Subscriber
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    Quote Originally Posted by fredd63 View Post
    Be cautious about clipping all those plug leads together so they look nice and tidy. If they are not spiral wound leads, you will get inductance from one lead to the next, which will fire a plug at the wrong time.
    Hello Fredd63,

    Thank you for your reply. I will be using the clips to separate each lead all the way along its travel from the distributor to its spark plug. This will be instead of the current multiple layers of leads touching - rat's nest

    Image grabbing a bag of snake lollies and then taking them out of the bag. Throw them down on top of the motor. Then you would come close to what the leads look like now. Not good at all!

    Kind regards
    Lionel

  5. #45
    Lionelgee is offline YarnMaster Silver Subscriber
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    Hello All,

    I just emailed and telephoned a Holley specialist supplier - located somewhere in Australia. I sent the first email sometime in the wee small hours of this morning so the location eludes me. I received an email back encouraging me to telephone.

    I described all the previously mentioned symptoms.

    Just over the phone you could tell the bloke was running through all the possible scenarios in his head that he had previously encountered...

    and then he asked, "Has the van ever run on Autogas?"

    I said ... "yes"

    Then Eureka!!!

    "Well that is your problem. Autogas eats the old floats out. You have to put a nitophyll float."

    Fingers crossed that is the solution. Then my very soon to be purchased fire extinguisher will just bring some peace of mind - not have to be used.

    Kind regards
    Lionel

  6. #46
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    Needle / seat tends to geta bit sticky if left without fuel on these. Checks in the accel pump curcuit also get sticky, giving a nice flat spot off idle. Couple of backfires will ususlly pop the diaphragm in the power valve too.
    Good thing about the Holleys is that tbey are easily tunable.
    Bad thing about the Holleys is that they are easily tunable 🤣

    Float level easily checked via the level bung in side of float bowl, adjusted via nut/screw on the top/front of bowl. Thread in bowl strips easy, gentle touch is best here.
    Crack throttle open with engine off and you should easily see if accel pump is working.
    '93 D1 V8 auto
    '93 D1 200Tdi 2-door, ARB's, MD transfer, sill tanks, winch, 2"lift.......
    '95 D1 V8 auto......gone
    '86 V8 RRC.....gone

  7. #47
    Lionelgee is offline YarnMaster Silver Subscriber
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    Quote Originally Posted by Rick1970 View Post
    Needle / seat tends to geta bit sticky if left without fuel on these. Checks in the accel pump curcuit also get sticky, giving a nice flat spot off idle. Couple of backfires will ususlly pop the diaphragm in the power valve too.
    Good thing about the Holleys is that tbey are easily tunable.
    Bad thing about the Holleys is that they are easily tunable 🤣

    Float level easily checked via the level bung in side of float bowl, adjusted via nut/screw on the top/front of bowl. Thread in bowl strips easy, gentle touch is best here.
    Crack throttle open with engine off and you should easily see if accel pump is working.
    Hello Rick,

    I have a genuine Holley rebuild kit on the way - plus the new float.

    The carburettor will be fully disassembled and cleaned thoroughly.

    The specialist Holley supplier in WA is also sending me a step-by-step pamphlet.

    Peter has been kind enough to also offer live assistance via the telephone if I get stuck. That is a very high level of service.

    Kind regards
    Lionel

  8. #48
    Lionelgee is offline YarnMaster Silver Subscriber
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    First Carburettor Rebuild

    Hello All,

    Over the past couple of days I have working on the Holley Carburettor and watching a number of "How To" YouTube clips and reading Holley special topic manuals - from Holley.

    I dismantlemented the carby. I found something like a fungus or lichen along with sediment in the float chamber. When rubbed a grey coating like a scale came away from inside the casting.

    I also de-sooted the carby after it had previously caught fire and I had to put it out.

    One and half cans of carburettor clean later, I followed up with an engine brush kit to make sure all the passages were clear. The brush work was followed with laundry liquid diluted in a bucket. More brush work and the a fresh water soak. The parts were then hung on the clothesline. The last treatment was a blow through with an air compressor nozzle.

    I had a Holley rebuild kit supplied by a Holley specialist and another kit brought by a autoparts supplier. I found that the Holley rebuild kit was better made and had parts that a youTube clip included and possible problems if two special washers were not used. The autoparts kit did not include these washers that were mentioned on youTube.

    I can now walk up to the van and turn the key and have the engine running.

    During the rebuild I had noticed that the previous owner may have just put a rebuild kit through the carburettor without cleaning it. Also, some parts were on back to front or like the washers - missing.

    One thing that one of the video blokes mentioned is Holley made some brown plastic floats that when they aged the tab holding the float up to its highest setting softened. As the tab became increasingly softer the float would keep rising upward - flooding the carburettor.

    So my first ever carburettor rebuild was a success! Most importantly - no fires!

    Kind regards
    Lionel

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