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Thread: Eddie FourFather Hill Ariel Atom II Horsepower Upgrade

  1. #1
    Proton FourFather's Avatar
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    Eddie FourFather Hill Ariel Atom II Horsepower Upgrade





    Here are a couple of screen shots of my Ariel Atom II going from zero to 110 MPH. The first printout shows the session timer at 1:14.195 and the speed at 1 mph (the first movement from stopped), and the second printout is at 101 MPH with the session timer at 1:20.715. So 1 mph to 101 mph in 6.52 seconds. I am pretty happy with this, considering the tires were cold and the track was so dusty that I could not use full throttle until more than two seconds into the run, when the tires finally hooked up, at about 40 mph, as shown on the data log.






    I am trying to learn how to use my HPtuners equipment to do my own tuning. I bought Greg Banish's CD and his Engine Management Advanced Tuning book and have spent a lot of time, so far, trying to learn. It is proving to be a real challenge, but at least my wide open throttle performance is pretty good.

    This run was a second gear start, so there is only one shift, at 8,192 rpm and 78 mph, from second to third gear, and I ran it up to 110mph in third, at 8,082 rpm, before I shut it down.

    I built the Ecotec LSJ engine myself, except for the Darton sleeve installation and the CNC porting of the cylinder head. I increased the bore from 88 to 92 mm to increase the displacement from 2.0 to 2.2 liters. I used Carrillo forged steel rods and Diamond forged pistons with Total Seal rings. Supetech valve springs, oversize stainless intake valves and Inconel exhaust valves, and titanium retainers. I used Comp cams, and have a stainless and stepped header/collector, with a shorty FlowMaster muffler. I use a tunable water/methanol injector, and have two aluminum intercooler radiators with two large Bosch pumps, and four full-time electric fans on those. I use the Harrop TVS supercharger on the LSJ intake manifold that I hand ported and matched to the larger head ports.

    Big fun so far-

    Eddie
    Last edited by FourFather; October 3, 2014 at 08:47 AM.
    MadMaxAtom and jlester like this.
    Eddie FourFather Hill
    Top Fuel Champion on land and water
    www.eddiehillsfuncycles.com since 1966
    Honda, Kawasaki, Polaris, Yamaha

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    Lepton McFred's Avatar
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    It's been a long time coming, Eddie. Looks real nice.

    IAT's go up 23˚ in 7 seconds, any idea where they level off? Looks like you're almost at 80% injector duty at 8k too.

    It'll be interesting to see what kind of power it puts down on a dyno.

    Glad to see the old girl up and running again!

  3. #3
    Up Quark
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    Wow that is awesome! Nice car. Any more pics? Is that the intercooler behind the hoop?

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    Proton FourFather's Avatar
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    Quote Originally Posted by McFred View Post
    It's been a long time coming, Eddie. Looks real nice.

    IAT's go up 23˚ in 7 seconds, any idea where they level off? Looks like you're almost at 80% injector duty at 8k too.

    It'll be interesting to see what kind of power it puts down on a dyno.

    Glad to see the old girl up and running again!

    Roger that, it has been a LONG time to get here.

    I have not been to the track since the latest changes to the intercooler system, so don't know yet where the IAT2 will go when actually racing.

    I looked at the duty cycle at 8192 rpm in second gear, 76 mph, and it is 68%, and 68% again in third gear at 8,082 rpm, so no trouble there, (except trying to get it to idle, with the 80's injectors, a real challenge, especially so with the aluminum flywheel I'm using)

    It is nice to feel some good performance, after all this time and work. When I get the tune a bit closer, I'd like to see what the dyno says, or better yet, what the lap time says.

    Thanks for the kind words.

    Eddie
    Eddie FourFather Hill
    Top Fuel Champion on land and water
    www.eddiehillsfuncycles.com since 1966
    Honda, Kawasaki, Polaris, Yamaha

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    Proton FourFather's Avatar
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    Quote Originally Posted by revenuer View Post
    Wow that is awesome! Nice car. Any more pics? Is that the intercooler behind the hoop?
    Thank you. I do have some more pictures, and will put some more on here. The roll hoop radiator is one of the intercoolers, and there is another one where the original one was.











    Eddie
    MadMaxAtom likes this.
    Eddie FourFather Hill
    Top Fuel Champion on land and water
    www.eddiehillsfuncycles.com since 1966
    Honda, Kawasaki, Polaris, Yamaha

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    Proton FourFather's Avatar
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    Roll hoop Intercooler pictures, the other, larger, radiator is up front.









    Eddie
    Eddie FourFather Hill
    Top Fuel Champion on land and water
    www.eddiehillsfuncycles.com since 1966
    Honda, Kawasaki, Polaris, Yamaha

  7. #7
    Neutrino MadMaxAtom's Avatar
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    Cool set-up.(pun intended) Amazing what can be done with a supercharged Ecotec (and some proper determination)

    Three Atoms in the house garage,,very nice...
    The power of an Atom is a terrible thing to waste! Atom owner/operator since 2007. The more you chase perfection,the faster it becomes. John Force for President! (I asked him once in person...he laughed)

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    Proton FourFather's Avatar
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    Here is a picture of the Chevy LSJ engine after I finished all the modifications and before I put it back in the car.



    Eddie FourFather Hill
    Eddie FourFather Hill
    Top Fuel Champion on land and water
    www.eddiehillsfuncycles.com since 1966
    Honda, Kawasaki, Polaris, Yamaha

  9. #9
    Proton FourFather's Avatar
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    Here is the Atom as it is now, Feb 2017. I am going to sell this Chevy powered Atom because I need to be racing what we are currently selling, and Ariels are all Honda powered now. I put a brand new Chevy crate complete engine in the car, and the modified engine, (that now needs a new head) goes with the sale, too.









    Brand new Chevy LSJ engine.


    All the street equipment and all the racing equipment and all the spare wheels and tires go with the sale. I am now putting together the info for a sale ad.

    Thanks for looking,

    Eddie FourFather Hill
    jlester likes this.
    Eddie FourFather Hill
    Top Fuel Champion on land and water
    www.eddiehillsfuncycles.com since 1966
    Honda, Kawasaki, Polaris, Yamaha

  10. #10
    Ion jlester's Avatar
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    Eddie - This is a great looking car, especially in person! Good luck with the sale!

    -Jeff

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