Wow Look at this manifold!

Discussion in 'General Discussion' started by GSJake, Oct 27, 2020.

Car Parts
  1. GSJake

    GSJake Active Member

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  2. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    No, it wouldn't bolt onto a Gen III.
    Strange (to me) why they didn't take advantage of a cross-feeding plenum to gain more length on the runners (like our Gen III Intake), instead of going straight down to each cylinder head port.
     
  3. GSJake

    GSJake Active Member

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    Ronnie what is different on intake portion of the gen 4/5 head that is different then ours? As in why wont it bold up?
    I know you can bolt gen4 (don't think anyone has ever attempted 5) on our gen 3 blocks.
    Thanks!
     
  4. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Hello GS

    I've never looked into the differences very far but the photo shows side by side mounting holes while ours on the Gen III are staggered, for starters.

    Intake manifolds can make quite a difference. I've heard from some guys in Airflow at Fiat the Gen III wasn't that great a performance manifold (but I think it sure looks Lambo' Cool!). Others say it was "adequate"...not that useful a statement.

    The Gen II, for example DOES provide considerably more torque in a very useful rpm range, so I thought I'd emulate the runner length AND I ported the Gen III intake to Gen II port size (which is the same size as the Striker Intake Ports).

    The plenum will also get a nice capacity increase so, it should work well but if it doesn't for some bizarre reason, I can always put the stocker back on.


    Cheers
     
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  5. Sigma-Wildcat

    Sigma-Wildcat Active Member Supporting Member

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    All of this is beyond my pay grade!
     
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  6. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Longer runners provide more torque (more cylinder pressure) in a specific rpm range.
    Basically, the air keeps flowing towards the cylinder head after the intake valve closes and the air in the long port starts to compress like a spring. When the intake valve reopens, the cylinder can (and does) fill at over 100% (ram tuning). That's where the torque increases come into play. If that rpm range is the same rpm where the camshaft "phases" or when you feel the engine start to "pull", there is a major boost in power.
     
  7. AMS3

    AMS3 Active Member

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    What effect does it have on longevity of the piston rings?
     
  8. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Negligible.
     
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  9. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    20201016_131807[1].jpg 20201016_131814[1].jpg
     
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  10. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Slow going so far and not very exciting...
    Still need to cut way down on the sides so the attached port extenders can be welded in straight.
     
  11. AMS3

    AMS3 Active Member

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    You fabbing the extenders, or chopping up another intake and adding spacer material?
     
  12. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Fabbing
     
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  13. AMS3

    AMS3 Active Member

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    Machining is a great skill to have. Wish I knew enough about it to fab my own stuff for different projects.
     
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  14. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    The machinist that's been planning this project (35 years experience) with me said the extenders will be a challenge. Fortunately he is also a Gear-Head that likes a challenge!
     
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  15. Kiwi SRT10

    Kiwi SRT10 Well-Known Member Supporting Member

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    Can he fab a new wheel? LOL:cool:
     
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  16. AMS3

    AMS3 Active Member

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    LOL, all you need is a solid block of aluminum....$$$$$$$$$
     
  17. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Ha!

    Yes, with a big chunk of Aluminum, the right dimensions, a computer assisted lathe, Operator, some creative skill and enough money, you can make any design of wheel you might like.

    Or, you can find a used one, put your tire on it and bolt it on. :)
     
  18. SRT10VENOMOUS

    SRT10VENOMOUS 1800HP Club. And climbing Supporting Member

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