HomeForumsMembers’ Builds and RidesVB – VC – VH – VK – VLHeron's VK SL Build – LS3, TH400, Sleeper Style

This topic contains 828 replies, has 28 voices, and was last updated by Profile photo of dave dave 6 hours, 35 minutes ago.

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  • #31106
    Profile photo of Heron SSV
    Heron SSV
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    Member since: May 5, 2015
    Posts: 533

    don’t you need speedo for engineering

    im using a GPS digital speedo cause my gearbox doesn’t have the cable drive gear on the shaft

    #31137
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    VH308
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    Member since: March 11, 2015
    Posts: 32

    Probably a silly question but would 14 inch stockies fit over the VT front brakes? I’d love a set with some factory SL hubcaps but I dont think 14s would fit, I think I need 15s at minimum

     

    No go with the 14s over the VT front brakes unfortunately, 15″ at a minimum.

     

    The 14’s don’t fit VT on IRS rear without a spacer either…

    #31162
    Profile photo of Heron SSV
    Heron SSV
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    Member since: May 5, 2015
    Posts: 533

    Dropped the VK off at my mechanics last night to get the tacho installed. I was talking to him about how it’s getting hot when cruising on the freeway, he said the coolant might be flowing too quickly through the radiator and not having enough time to cool (it’s reving around 3500 at 100kmh), a shroud will help the thermo work better but mainly at lower speeds. I’m using a factory VK 6 cylinder radiator but I’m not sure if it is a single pass one, the mechanic said I should look for a three pass one to give the coolant time to cool. Anyone know how I can check mine to see what  it’s got?

    #31164
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    vin
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    Member since: June 5, 2019
    Posts: 27

    Yep as vh308 said, 15″ rim is the minimum over VT disk brakes.

    WELLLLLL there is your heating problem @ single core vk 6cyl SINGLE core radiator for a LS motor or any v8 …… I cant believe your using one especially if your 3500 rpm at 100kmh is correct … at least use the bigger core factory copper V8 radiator from any commodore VB to VL or even up to VS with cowl as a MINIMUM if you don’t want to cook the ls.

    Of course you can go crazy at a expense with after market alloy radiator/cowling with twin thermos, there is plenty available for LS. Sounds like you have run out of funds on the build, it aint as cheap as people think/say to do conversions.

    #31166
    Profile photo of VRSenator065
    VRSenator065
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    • Adelaide SA
    • VR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project)

    • View build HERE
    Member since: February 17, 2015
    Posts: 5 397
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    ^tend to agree with Vin.  I am not sure I have heard of 3 pass radiator.  Mine is double pass, which means the tank has a divider in it so the coolant has to go across the radiator once like normal but then back across again as a second pass.  Power makes heat, that’s the prob, and the bays on these cars are small which makes it worse.  Maybe even try a cheap Chinese eBay special?

    • This reply was modified 17 hours, 38 minutes ago by Profile photo of VRSenator065 VRSenator065.
    #31168
    Profile photo of VRSenator065
    VRSenator065
    Participant
    • Adelaide SA
    • VR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project)

    • View build HERE
    Member since: February 17, 2015
    Posts: 5 397
    Supporter

    #31169
    Profile photo of Heron SSV
    Heron SSV
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    Member since: May 5, 2015
    Posts: 533

    As far as I knew the VK 6 and 8 cylinder radiators had the same capacity. I went with the 6 cylinder one as the inlet and outlet are on opposite sides compared to the 8 cyliner one and are closer to the inlet/outlet on the engine. Three pass is the same as your diagrm Gary but with an extra pass back to the other side.

    The radiator is working somewhat, it just gets hot cruising up around 100, it cools down when I drop back to 80-90.

    #31172
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    vin
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    Member since: June 5, 2019
    Posts: 27

    I have never heard of a pass radiator just a 1/2/3 core radiator probably the same thing. In the gen 1 commodores they were known as crossflow radiators probably what the “pass” word is now.

    In early commodores like vb/vl The difference is in the factory options fitted like air con & auto trans, the larger capacity v8 radiator was installed to cope with heavier demand even in a 6cyl.

    as gary said …. Maybe your better off with a larger 3 core capacity cheap alloy chinese radiator than trying to use the smaller vk one.

    #31173
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    dave
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    Member since: March 6, 2015
    Posts: 42

    I agree that your cooling issue is the radiator not having enough cooling capacity if it is a 6 cylinder VK item. More power you make the more heat you make and that heat has to be removed from the coolant. Meaning the surface area of the cores needs to be larger. Either more rows of cores or larger cores or physically larger radiator area. Good write up on the build, sounds like it has been an enjoyable and rewarding build. Always good when you finally get it up and running and mobile.

    Dave

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