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Recent content by NorthloopCup

  1. NorthloopCup

    172 Sump Baffle

    Unfortunately it’s a flaw in the design of the cylinder head on the 1*2 mate. You can improve the situation by fitting a restrictor in the cylinder head oilway though. We also modified the oil pumps to improve their pumping efficiency as well.
  2. NorthloopCup

    172 Sump Baffle

    I’ve seen datalogs for a f4r producing a whopping 11psi hot oil pressure around the hairpin at Mallory........ The cause? Larger tolerances/clearances and an extremely shite vvt system that haemorrhages oil!
  3. NorthloopCup

    172 Sump Baffle

    If you logged the oil pressure on an f4r, you would genuinely cry once you saw the results. They’re shocking!
  4. NorthloopCup

    JC5 Rebuild (another one)

    You have to pay the membership mate to access that area. I currently have no gearboxes for sale though.
  5. NorthloopCup

    Engine rebuild tolerances

    It’s due to the lack of counterbalance weights on the crank mate. If it’s going to spin, the tags on the block/rods won’t stop it. The crank flexes due to the poor design. Trust me mate, I’ve been around these engines now for quite some time, so I know their downfalls.
  6. NorthloopCup

    Engine rebuild tolerances

    King bearings have larger tolerances iirc as they’re more race biased, so you’re better off with standard bearings. Also, that crank is one of the ones that will potentially spin a centre main. All luck of the draw though I’m afraid.
  7. NorthloopCup

    Changed Gearbox End Cap......

    My Paypal is: 😂😂
  8. NorthloopCup

    Changed Gearbox End Cap......

    You’ve knocked the selector fork down for 5th gear 100%. Take the cover off and manually lift it up so the selector ring is level with the hub. DO NOT pull it any further otherwise you’ll be in a world of pain.
  9. NorthloopCup

    Boosted 172 help

    Dunno mate. Not something I’ve looked into.
  10. NorthloopCup

    Boosted 172 help

    Yes mate, you can use the exhaust manifold on a 172 head if that’s what you’re wanting to do. The 172 inlet manifold will most likely foul the turbo on a 225 manifold, so you’re better off getting a log manifold. Gives more scope for turbo choice as well with a log manifold.
  11. NorthloopCup

    Boosted 172 help

    225 inlet won’t fit on a 197 head as the ports aren’t the same. Bolt pattern is the same though. Turbo manifold will fit on any f4r though
  12. NorthloopCup

    Struggling to get into 1st - broken spring?

    It could be that spring mate yeah, but it may be internal as well. Replace the spring and try it, as the spring is the cheaper option! Lol
  13. NorthloopCup

    Oil Leak (Pics Inside)

    Is it?! Lol didn’t pay enough attention clearly! @Phil555 Rubber gasket on the sump. Could be rear main oil seal as well if it’s leaking in that area.
  14. NorthloopCup

    Oil Leak (Pics Inside)

    Yep. That’s the casing join mate so it’ll need to be opened up to fix.

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