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  • Users: ebola
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  1. ebola

    Wheel hop / Tramp in IRS

    cheers for links.
  2. ebola

    Wheel hop / Tramp in IRS

    Hi.This is very good reading for us, drag racers from east europe.We race compact european cars on concrete airfields, and most of us still utilise IRS suspensions. All our research on IRS under load is empirical,trial and error way.What works for us is stiff torsion bars, nothing else.We dont...
  3. ebola

    Question on sprint car transmissions

    Hi.Im looking for transmission solution for compact race car.And I found interesting transmission for sale on ebay, wich is not realy suitable for me, but very interesting as a device.It was sprint car variable torque multiplicator, just one gear, like direct drive coupled with pump and torque...
  4. ebola

    nitro carburetor size question

    thanks patrpimmer, for ideas.
  5. ebola

    nitro carburetor size question

    It is methanol and nitro 50%.I know pretty much, what Im going to face theory-wise according to fuel properties, safety issues etc.Motor is built with high volume oil pump, block girdle,block filled to the deck, and tolerances to accept 50W oil.Ignition is Vertex race magneto modified by Spud...
  6. ebola

    nitro carburetor size question

    Hi, Im building fancy watercooled vw nitro motor.It is basicaly stroker multivalve design.The principle idea ir to built up to 50% nitro naturaly aspirated angine, involving stone age management for fuel and spark, opposite to modern EFIs.I have done short motor, and have got points mag ignition...
  7. ebola

    oil circulation or just pressure?

    ok, Patprimmerss arguments are more than enough.I know two strokes lubrication, and there are even split ball bearings quite common on marine multicylinder twostrokes.The problem is - ball type crank bearings do not survive load without high rpm.I dont know, this is old rule, maybe modern...
  8. ebola

    liquid lpg injection

    plenty of such systems originaly comes in cars in europe.My father drives 1998 originaly french market nissan primera with liquid lpg injection.System got a pump in tank, small valve for pressure control under hood, and injectors driven by ecu, wich takes pulse from oem ecu and transfers signal...
  9. ebola

    oil circulation or just pressure?

    its not difficult to meassure it.If I rew engine under some load and check outcoming oil temperatures, it could be possible to do so.Thanks for input anyway.
  10. ebola

    2-cycle Automobile

    trabant had gearbox and clutch.It was also van made in east germany, with two stroke engine.But I know nothing about its transmission.I think it was never been such car as You say - without even clutch or variator.
  11. ebola

    oil circulation or just pressure?

    ok, sir, and what problems would You expect from such system? Bearing bite from oil cooking? Id doubt on that. Its just one minute hard run...Ok, I could do say quarter galon circulation per minute - it still wouldnt require pump.Would it make sense You think? Thanks Andrius
  12. ebola

    oil circulation or just pressure?

    Im building billet two cylinder engine for half scale dragster.It is built from plain alluminium block.Im wondering if I really need conventional oil pump? Im not sure how much benefit we have from oil circulation in dragrace engine.Isnt just enough to keep oil lines under pressure while...
  13. ebola

    why pushrod?

    but mentioned 427 sohc was 2 valve per cylinder, right? Not multivalve engine? I understand that oxygen rich fuel doesnt require high flow head, because oxygen is stuffed in with fuel and air is more needed to get compressible/combustible substance rather as oxygen source.Nitro engine is capable...
  14. ebola

    why pushrod?

    well, I'm building "outlaw" style car - I can use any electronics at ignitions,any fuel, but I definately go natural aspiration high CR on 4 cylinder engine, carburetor and manual gear box. I have choice from various modern and old style engine basis I can use for project.My personal experience...
  15. ebola

    why pushrod?

    In sweden last year one respectable race team owner said to me - "for drag race use pushrod engine only". Since then Im searching for suitable block - my project is small cc alcohol engine, and this claim makes me wonder - why? Now I have to choose some old block, and actauly 100%remanufacture...
  16. ebola

    Effectiveness of eliminating BOV with throttle body?

    Intersting idea...Should be tried somedays...
  17. ebola

    btu's per hp

    my friend, professional chip tuner was experimenting with 3 cyl.diesel vw lupo last year.He was driving at "ecology rallye" wich happens every year in Lithuania ant took second place.His lupo at 105 km/hour eats average 2.5 liter diesel no highway - country asfalt road.Car with all guts - full...
  18. ebola

    NASCAR fuel scandal

    of course, petrol engines are common in racing not because of technical problems - it is historical/industrial matter first of all.Industry often exceeds limit wich makes it self-reasoned. Even if tomorrow we'd have alcohol fuel with production cost twice as low as petrol - politics would rise...
  19. ebola

    Hand Valve Lapping Needed?

    waste of time evelrod?:) Its one my favorite jobs - angle cut and valve lapping.Im not a billion dollar industry shrick to apply to high tech machines to do elementary bussines.I'd treat lapping as a higiene.
  20. ebola

    NASCAR fuel scandal

    im not much into nascar, but it Im always wondering - how much attention is payed to pump oil base fueled engines yet on the very very end of this fuel era...Looks like fuel engineering somewhere still lives in common "happy endless" mud.Strange.Decade or two,and all of it will go on reneuvable...

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