HomeForumsTechnical – GeneralExhaustMaking some kick ass pipes for 2nd gen commodore

This topic contains 147 replies, has 11 voices, and was last updated by Profile photo of VRSenator065 VRSenator065 4 years, 10 months ago.

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  • #9197
    Profile photo of cava454
    cava454
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    Member since: February 20, 2015
    Posts: 2 361
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    Awesome work mate.

     

     

    It’s always good when mods pay off. Esp when u put some serious effort into them.

    #9206
    Profile photo of vs manta 218
    vs manta 218
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    Member since: March 2, 2015
    Posts: 796
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    It really is a serious amount of effort in making a set

     

     

    Don’t think I would recommend this amount of work for a N/A 500-600hp Holden engine unless your really really keen but for boost there is a large noticeable increase in efficiency

     

     

    I’m not a expert in it but I think a lot of the torque come from 1 7/8 for 10 inches then the step to 2 inch, and obviously the increase e85 would of added but it appears there is a good scavenge affect there

    #9208
    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: 5 693
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    I reckon they would make a huge difference on NA too, its as important in NA, as you cant get the fresh charge in until the old one is exhausted.  So the quicker and easier for the exhaust gas to leave the more power NA will make.  The drop in pressure you have seen proves how well they are working, seriously great result, and for a set you literally made yourself is pretty bloody nice work.  If you get bored happy for you to come over to SA and help me make a set for mine ;-)

    #9215
    Profile photo of vs manta 218
    vs manta 218
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    Member since: March 2, 2015
    Posts: 796
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    Yeah you would be right actually, big HP N/A engines that flow enough would have big gains in these as well

     

     

    Robert valastro comes and stays at my place when ever he goes racing, I spent a good half hour looking at his pipes from every angle while it was on the trailer to get a good idea on how to make myn,

     

    he he even come here when I was half way through them so I was able to compare a bit more

     

    his pipes are a real work of art and they do work great on his engine, he is making 520 rwhp N/A and 150hp nos on top of that though and at 8500rpm so it needs them and he gained .3 second or so with them

    • This reply was modified 4 years, 10 months ago by Profile photo of vs manta 218 vs manta 218.
    #9218
    Profile photo of cava454
    cava454
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    Member since: February 20, 2015
    Posts: 2 361
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    Shames u didn’t do a back to back 98 run.

    #9220
    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: 5 693
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    Roberts just swapping to a white VL from his blue VR isnt he? Tuff bloody car (s)  All the numbers you have achieved point to them working exactly as planned, great work.

    #9227
    Profile photo of vs manta 218
    vs manta 218
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    Posts: 796
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    It is a shame I never got a comparison against them

    Yeah robs engine and whole set up is mental, he is extremely good at making a car fast, even on basic set ups he has pulled awesome HP numbers and has a some good little tricks he does

    #9228
    Profile photo of vs manta 218
    vs manta 218
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    He is coming here racing the VL for first time this weekend

    #9232
    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: 5 693
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    He is coming here racing the VL for first time this weekend

    Nice, I saw his new car come up on fb, looks sweet, will follow this week end how he goes  :good:

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