Blower shop XR1 14/71 performance

Discussion in 'Manton Push Rods Top Alcohol Tech Questions' started by Neil Morley, Dec 28, 2015.

  1. Neil Morley

    Neil Morley Member

    Joined:
    Dec 28, 2015
    Messages:
    93
    Likes Received:
    3
    I'm now running TBS XR-1 14/71 HH blower on my street / grudge car (3700+lbs) after seeing blower dyno comparison with the lb-20 and kobelco superman which the XR-1 not only made more boost it did so at lower INT. Temps and less parasitic loss. I also spoke with tommy keeter at KPE after he got some engine dyno results and he claimed he was very impressed, he said it not only made killer power at low OD. But very cool intake temps, There is a video of him making 2400+ hp with a 24 deg. Headed BBC with an lb-20 roots. I asked him how he thought the XR-1 stacked up against the lb-20 and he said the XR-1 would run circles around it, I don't have a lot of data yet on my car but so far I've seen 32lbs boost at 7800 rpm with only 21% OD on my 555 and I will give updates at a later date. You can take this for what it's worth but I just wanna say for only $8000 where are you gonna get an all billet blower with that kind of performance.
     
    #41
  2. BEDNAR1320

    BEDNAR1320 Member

    Joined:
    Oct 8, 2008
    Messages:
    222
    Likes Received:
    10
    Nice Neal! Maybe we'll start seeing more out there.......
     
    #42
  3. Neil Morley

    Neil Morley Member

    Joined:
    Dec 28, 2015
    Messages:
    93
    Likes Received:
    3
    I also wanted to mention that Eric at the blower shop claimed that they dynoed it against not only the kobelco superman and the lb-20 but also the DMPE M-4 and M-5 , and he claimed only the M-5 outperformed the XR-1 by a small margin. Again these are only claims but something to think about, maybe there is something with more bang for your buck. I know there are better blowers out there but for considerably more money. And as always I do appreciate and respect all of your knowledge, thank you.
     
    #43
  4. BEDNAR1320

    BEDNAR1320 Member

    Joined:
    Oct 8, 2008
    Messages:
    222
    Likes Received:
    10
    Eric told me the same thing. Keeter said it was better than whatever SSI he was comparing it to

    Bottom line, the proof is in the pudding. When someone does A to B testing then we'll know.........It will be interesting.

    I was impressed with the 24# it makes at only 9%.
     
    #44
  5. Neil Morley

    Neil Morley Member

    Joined:
    Dec 28, 2015
    Messages:
    93
    Likes Received:
    3
    Yes keeter was very impressed, and I don't have enough data yet but my intake temp probe is right under the delta opening and haven't seen any temps above 90 deg. At 32psi and will have more data soon but so far I'm very happy and think you'd be hard pressed to find a better blower for the money not to mention it's a beautiful looking piece.
     
    #45
  6. BEDNAR1320

    BEDNAR1320 Member

    Joined:
    Oct 8, 2008
    Messages:
    222
    Likes Received:
    10
    My latest report, I have stepped up the OD slightly to 13%, it makes 27#@8000 rpm. Car has gone 3.75@2000 lbs.
     
    #46
  7. BEDNAR1320

    BEDNAR1320 Member

    Joined:
    Oct 8, 2008
    Messages:
    222
    Likes Received:
    10
    Went up to 15.4% made 29.9# @ 8000 rpm.
     
    #47
  8. WIDEOPEN231

    WIDEOPEN231 Member

    Joined:
    Jun 10, 2011
    Messages:
    44
    Likes Received:
    5
    Bednar1320 take it to 18% and let us know if it makes another 2.5 to 3 lbs.Would be interesting to see how far it goes and stays linear ,especially using your dollar to test on.LOL
     
    #48
  9. BEDNAR1320

    BEDNAR1320 Member

    Joined:
    Oct 8, 2008
    Messages:
    222
    Likes Received:
    10
    I plan on giving it a little more this fall, when the conditions are better.

    I don't plan on going much higher with the boost...........
     
    #49
  10. Neil Morley

    Neil Morley Member

    Joined:
    Dec 28, 2015
    Messages:
    93
    Likes Received:
    3
    I was testing my car down in Bakersfield a couple weeks ago with the XR-1 14/71 and went from 14%OD to 39% and boost went from 24lbs on my 555 BBC to 40lbs both @ 8,000rpm and dropped. 4 tenths and picked up 17 mph in the 1/8 on a 3,850lbs
     
    #50
    TAFC 5 81 likes this.
  11. Big Steve

    Big Steve New Member

    Joined:
    Oct 15, 2017
    Messages:
    24
    Likes Received:
    0
    Neil, are you having any surging issues with the XR1? I just got mine started up and i'm having surge issues, I know Brian Bednar has been fighting it some since he installed his.

    Just FYI Steve Will won TD at the winternats this year with a XR1 on a Brad motor
     
    #51
  12. Neil Morley

    Neil Morley Member

    Joined:
    Dec 28, 2015
    Messages:
    93
    Likes Received:
    3
    Hi Steve , I have occasionally had surge issues if the idle was to low below 1900-2000 or the barrel valve was too rich as I also drive my nova on a regular basis on the street but also if the convertor is to tight it will want to surge when in gear , I had just made a convertor change before my last outing at Bakersfield and the convertor was a little too tight and started to surge again so I'm making a stator change as the convertor was only flashing to 5200 rpm whereas my previous would flash to 6200rpm coming off the two step, as far as your 110 fuel pump choice I don't think I would spin your XR-1 14/71 more than 25%OD even with a .080 size main jet unless you creep up on it because that blower will move some air , I run a 990 pump which is almost 3 GPM more with a .090 main jet and no pump loop @ 39% OD, just my .02, good luck what part of the country are you from Steve?
     
    #52
  13. Big Steve

    Big Steve New Member

    Joined:
    Oct 15, 2017
    Messages:
    24
    Likes Received:
    0
    As far as the pulleys got a 54 on bottom and currently have a 50 on top which is 8% just to get started and the fastest pulley I have is 46 which should be around 17% OD. Reason for the 110 pump is I just want to keep things simple for now, its a twin gear pump so I can always change gears to make it bigger and add a high speed later if I want.

    I am from TX, Ft Worth area
     
    #53
    Last edited: Apr 10, 2018

Share This Page