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Thread: Holden 202 cam, carby, manifold, etc upgrade project

  1. #1
    Kime Guest

    Holden 202 cam, carby, manifold, etc upgrade project

    Hi all,

    Am announcing the beginning of my little project.

    Recently bought a s3 wagon with a red 202. Hadn't been registered for many yrs. so after I got it, spent ALOT of time (still) fixing all the small things.

    It currently has the orig stromy in her. This will be getting replaced with a cam kit which I've purchased from engine performance shop in Sydney, moe engines. The kit comes with
    1 x Custom Camshaft Towing economy series.
    1 x Lifter kit matched to camshaft
    1 X intake Manifold suit 350 Holley
    1 x Timing gear kit alloy
    Press timing gear and set clearance ready to go

    The mechanic I'm working with is a great bloke who "cut his teeth" on the ol straight 6's from GM.

    Currently it's getting about 20l/100klm... So, not really that good.. My old s3 ute that I had (same engine) used to get about 12l/100klm. It did have a fairy overdrive, but that was also at 100klm/h where as my wagon is based on doing 85klm/h with only a 4speed box with the 3.55 diff. Everything the same between the 2 except the wagon doesn't have fairy overdrive.

    The first step will be to do the cam change over including all intake components.
    2nd step will be extractors.
    3rd step will be to fit LPG.

    While all this is happening I hope to be putting it on a Dyno to get the figures with each upgrade. Seems to be alot of ppl will recommend something, but cannot give Dyno readout figures to match advise. I'm hoping to alleviate this issue

    Cam kit should be here soon, so I'll keep everyone updated as we go.

    Now I know there is other options out there, and ppl will be asking, "why waste money doing this when u could be doing (fill in the blank)"....

    My answer to that is, cause I want to... I like the s3 and I like the good ol Holden red 202.. It's pretty simple...

    Stay tuned folks

  2. #2
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    Sounds great, I'm also a fan of the good old Holden red. I have a 186 in my S3 Landy wagon. Looking forward to reading your posts,; Good luck and happy rebuilding..Best regards Eddie.

  3. #3
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    Dont forget the 350 holley . Or will you be going straight LPG. If so get yourself a fuel injected manifold from a 202 black motor, the one that goes over the top of the motor. Best manifold for LPG.

    Gary

  4. #4
    Kime Guest
    Quote Originally Posted by 33chinacars View Post
    Dont forget the 350 holley . Or will you be going straight LPG. If so get yourself a fuel injected manifold from a 202 black motor, the one that goes over the top of the motor. Best manifold for LPG.

    Gary
    Thanks Gary. Hv the 350 sitting in the shed ready to go on, just waiting for the cam kit to arrive by post...

    Thanks for heads up with the manifold. Will see how this setup goes before the LPG gets installed. The kit comes with a manifold upgrade for the motor, so we'll see I suppose.

    Is the reason the injection manifold is better is due to it coming over the top of the engine, giving the gas more time and gravity to mix with the air??

    Cheers thanks

  5. #5
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    Quote Originally Posted by Kime View Post
    Is the reason the injection manifold is better is due to it coming over the top of the engine, giving the gas more time and gravity to mix with the air??
    The fuel injection manifold has far better flow caricturistics. If you know what I meen . A friend who build engines for a living ( race engines as well ) had a stroked red motor (235 ci) on straight gas with this manifold in a HR ute. Lets just say it wasnt slow.

    Gary

  6. #6
    Kime Guest
    Quote Originally Posted by 33chinacars View Post
    The fuel injection manifold has far better flow caricturistics. If you know what I meen . A friend who build engines for a living ( race engines as well ) had a stroked red motor (235 ci) on straight gas with this manifold in a HR ute. Lets just say it wasnt slow.

    Gary
    Yep, that's what I was imagining. I have seen that type of manifold, I know what ur talking about. I'll see how it goes with the 350 seeing as its going to be duel fuel/LPG.

    And hopefully I'll have some pics to put up

    Cheers

  7. #7
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    In regards to the Holley, back before there was internet to do thorough research, I was advised against the 350 Holley. I was told that they dont like steep angles ie. if you stalled it on a steep dune it could be a right mongrel to restart. I could well be wrong about their suitability as at the time I just went along with it and used a 2 barrel Stromberg and a matching Holden manifold instead.

    Cheers,
    Anthony.

  8. #8
    Homestar's Avatar
    Homestar is offline Super Moderator & CA manager Subscriber
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    Just like to add a couple of points for your consideration.

    1 - When you fit the alloy timing gear to the cam, make sure you open up the oiler a bit. it is the little sqirter that points between the cam and crank gears. pull it out - give it a wiggle and pull with a pair of pliers, it will come straight out. run the next size up drill through the little hole, then put it back in. this will stop the alloy gear howling like a banshee. you should also fit a high volume oil pump.

    2 - Holley carbs can starve for fuel on hills. I found a 2 barrel Webber better - you can get adaptors to suit these.

    3 - The standard sump can cause oil starvation on hills. There used to be aftermarket deep sumps available, but not sure if they still are.

    All the best with the project.

    Cheers - Gav
    If you need to contact me please email homestarrunnerau@gmail.com - thanks - Gav.

  9. #9
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    Agree with all points above, the webber especially. The last of the carbied falcons had a webber that adapted and jetted very well to the holden. Elec choke as well was a nicety. We just cut the front out of the sump and made an extension to the front edge and added about an extra 2L.

  10. #10
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    The Weber sounds like the go. Good 2bbl Strommy / manifold combos are getting scarce.

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