How fast is max revs in 3rd for a T1 engine?

Discussion in 'Mech Tech' started by Zed, Mar 19, 2013.

  1. Zed

    Zed Gradually getting grumpier

    Standard tyres, standard box, 1600 engine. Does anyone have the definitive answer? I believe the max revs are 4600.

    I was in a friends bus (not driving) with a rev counter a few months ago and was quite surprised how fast it went in 3rd up to the line. I'll say later.
     
  2. In an air cooled i drive it untill it starts to lose poke then i change up
    Thats the way an old school dude told me to drive them as cooling suffers if you labour them
    They sound like they are at there limit before they are
     
  3. Zed

    Zed Gradually getting grumpier

    They certainly do. I will reveal how fast we went in 3rd tomorrow. :D
     
  4. Standard engine?
     
  5. Close to 60 i'd guess :)
     
  6. 4600 ?
    I bow to Zeds superior knowledge but if the van you was in went to 4600 and is still going, then this seems a safe bet as a an answer :)
     
  7. I'll. Be honest .I don't have a clue.but I'd like to know
     
  8. 70 in 3rd!
     
  9. Zed

    Zed Gradually getting grumpier

    It was 60mph. So there you have it.Before we all go out for a thrash, this was a dynamically balanced, new 1776 engine with dells and it sounded smooth and quiet even at red-line revs. If your old many times rebuilt, worn T! engine was asked to do this it might end in tears. Myself I find everyones in different states of wear and balance. Some happy to rev high, some sound like they're going into harmonic destruction!

    If at 40, you're at 3050 rpm,
    at 45, 3450
    at 50, 3800and it probably sounds close to blowing up, but apparently it's not!

    I wonder where the power band is supposed to be? - never noticed one myself...
     
  10. Zed

    Zed Gradually getting grumpier

    70, would be 5366rpm, just within the limit for a 1700 T4 engine on a std gearbox.
    I don't feel so bad about cruising at 60 in 3rd for 10 minutes once now (T4 1700). :D
     
  11. My 1500 1970 Beetle owners handbook says 4100 RPM, which gave you about 70 MPH in 4th.
    Tony
     

  12. Never mind power band more like elastic band lol
     
  13. Zed

    Zed Gradually getting grumpier

    There must be one! A 1700 is only slightly bigger and really takes off above 45 in 3rd.

    Maybe, we never get to it due to the frightening noise!
     
  14. This help at all?

    [​IMG]
     
  15. Interesting figures for the W code engine.... different cam was responsible I think (I have one in my 2 litre....)
     
  16. 50 (indicated) is fast enough for me, probably nearer 45 in reality, in 3rd.
    Who built this mythical T1 1776 that does 60 in 3rd and how much did it cost?:)
     
    Tiny-Pie likes this.
  17. mikedjames

    mikedjames Supporter

    I go to 55 occasionally, but generally the bus accelerates in 4th better above 50mph even on some milder uphill bits of the M27.
    As I work on tuning the progressive it keeps getting better..
     
  18. Zed

    Zed Gradually getting grumpier

    My friend gathered all the parts together and a bloke in Brum assembled it in his shed. I think it must be a nice shed, he has a rolling road in it! He makes fast air-cooled engines for a hobby/pocket money. It really did say 60 on the speedo and it was as quiet as a mouse. Very impressed. I don't know the cost, but bargains were hunted out and stashed away for months before the build.
     
    paradox, scote and moley76 like this.

Share This Page