Jet Mad - 455 Olds "73 Kona"
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Jet Mad - 455 Olds "73 Kona"

  1. #1
    "Mad" Member Jet Mad's Avatar
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    Default Jet Mad - 455 Olds "73 Kona"

    Some pictures of my 455 Olds powered Kona which I recently completed.

    I broke the thrust bearing on the jet, and decided while I am stripping the pump and the motor has to come out I will be doing the following upgrades as well.

    1. Rail Kit
    2. Bowl stuffer.
    3. SS "A" impeller (prepared and detailed by Duane @ Hi-Tec Performance)
    4. Inducer impeller.
    5. Install a pressure gauge on the suction housing.(nozzle tuning)
    6. Gas Flow the RPM Performer heads.

    It has taken me about 4 years to get where I am, hopefully it will be the last upgrades I am doing.
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    Last edited by Jet Mad; 04-23-2011 at 04:15 AM.


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  3. #2
    Senior Member pilot940's Avatar
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    Nice looking rig! What HP are you getting with the olds? What RPM are you turning with the A impeller?

  4. #3
    "Mad" Member Jet Mad's Avatar
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    Quote Originally Posted by pilot940 View Post
    Nice looking rig! What HP are you getting with the olds? What RPM are you turning with the A impeller?
    Pilot,

    I have turned the "A" aluminium impeller 5600 RPM with my rev limiter set at 5800RPM during testing, but normally, I set the rev limiter at 5200 RPM. I don't know what it will do with the SS "A" impeller and inducer.

    Hp should be in the region of 620 - 650.

    Wikus


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    Senior Member 1975sleekcraft's Avatar
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    i am turnin an A at 5200...i was told that is only 450 horse...not sure 5600 makes 650...

  7. #5
    "Mad" Member Jet Mad's Avatar
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    Quote Originally Posted by 1975sleekcraft View Post
    i am turnin an A at 5200...i was told that is only 450 horse...not sure 5600 makes 650...
    Sleek,

    450 Hp @ 5200 Rpm sounds about right, 5600Rpm should give an estimated 600+ Hp - I was turning that before the thrust bearing gave up. . If I can find an engine dyno in South Africa(which is non existent) I myself would really want to know what my motor can do.

    Realistically I think the motor puts out about 550-570HP at the moment. I have build the motor with the best parts I could lay my hands on and tapped a lot of "Guru's" minds.

    Only time will tell, I still have a lot of tuning and testing to do on the motor.

    My first priority is sorting the pump out, my personal opinion is that you can make huge HP and torque, but if the pump is not done properly it is a waist of time and $.

    Wikus
    Last edited by Jet Mad; 04-24-2011 at 03:49 AM.


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    Senior Member hellnback's Avatar
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    Default Someone say Oldsmobile ? ? ?

    Mine did 625 @ 5200 on the dyno and was still climbing when I left the room ....

    I'd bet you're closer to 500 than you think there Wickus
    It may be OLD ,it may be Slow ... but at least it's MOBILE !!!

  9. #7
    "Mad" Member Jet Mad's Avatar
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    Quote Originally Posted by hellnback View Post
    Mine did 625 @ 5200 on the dyno and was still climbing when I left the room ....

    I'd bet you're closer to 500 than you think there Wickus
    I did some calculations with The Compcam cam selection Dyno which is a virtual dyno.

    The figures that it gave me was astronomical on my engine build.

    1. 715Hp @ 6500 Rpm.
    2. 650 ft/lbs Torque.

    500Hp is good, I still need to flow the heads, sort out the carburetter (850 DP),timing etc.

    I imported a marine Edelbrock and a 750 DP to do some tests with as well.

    The test will be with the fresh pump and SS impeller.

    Wikus


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    Senior Member pilot940's Avatar
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    Thats pretty dang good, I am turning just over 5200 rpm with my A. Just put a holley 850 mech sec instead of the 750 vac sec. Saw about a 100 rpm increase with that swap, but the biggest difference was how much quicker it got to speed. The 850 really picked it up.

    Not sure if you have seen it yet, but Bill Trovato (BTR performance) just put out a book not to long ago on Max Performance Olds, it is a great book if you are interested.

    BTR Performance

  11. #9
    "Mad" Member Jet Mad's Avatar
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    Pilot,

    I have send tons of mails to BTR Performance trying to get a hold of that manual, they don't even respond to my mails.

    I used Mondello Performance a lot and most of the parts are from Mondello's,the help and info I got from them was extremely good.

    I will have to ask Duane to get a hold of that book for me and send it over.

    I am busy with a second 455 for my 753 Hamilton Jet and would like to see what BTR does different.

    Tomorrow I am taking the motor and pump out to see what went wrong with the pump.

    Wikus


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    Senior Member pilot940's Avatar
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    I got mine through barnes and noble online, bill trovato - All Product Search - Barnes*&*Noble.com.

    Amazon, Amazon.com: bill trovato

    That sucks they havent responded though, maybe something with their email is screwed up????

  13. #11
    "Mad" Member Jet Mad's Avatar
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    Pilot,

    Thanks for the link to Amazon - The book is ordered and on its way

    I forgot to ask you if you can list your motor specs if possible.

    What jets are you running on your 850 at the moment?

    Thanks

    Wikus
    Last edited by Jet Mad; 04-24-2011 at 01:56 PM.


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    Senior Member pilot940's Avatar
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    I am running 10.6:1 comp with stock eddy heads, (no porting)
    TRW forged pistons, Mondello 25-28 cam. Strapped main caps. No oil mods in the block. Oil drain backs on the heads. Melling HV pump, 10 qt pan. Performer intake, single point ign. 850 holley DP straight stock Holley (no jetting). Jacuzi Wj energized with an "A" impeller and droop. 18 ft' Witchcraft. 68gps MPH at 5200 rpm (heavy boat)...

  15. #13
    "Mad" Member Jet Mad's Avatar
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    Quote Originally Posted by pilot940 View Post
    I am running 10.6:1 comp with stock eddy heads, (no porting)
    TRW forged pistons, Mondello 25-28 cam. Strapped main caps. No oil mods in the block. Oil drain backs on the heads. Melling HV pump, 10 qt pan. Performer intake, single point ign. 850 holley DP straight stock Holley (no jetting). Jacuzi Wj energized with an "A" impeller and droop. 18 ft' Witchcraft. 68gps MPH at 5200 rpm (heavy boat)...
    My build is almost identical to yours,

    1. Icon Forged Pistons - 14.5cc - .40 Over
    2. Nascar Rods - slotted on both sides
    3. Comp - 10.5:1
    4. 292 Iskey Marine Cam - Straight Cut
    5. Restricted Push Rods
    6. RPM Performer Heads - CNC Ported
    7. Gapless Total seal Rings
    8. Oil Mods to the HV - HP Mellings Pump with Pickup mods
    9. Oil Mods to the Crank
    10. Drain backs to the oil pan.
    11. 8qt Moroso Marine Sump
    12. Remote Oil Filter - Oil Cooler
    13. Clearances on Mains .030" and Big Ends
    14. Billet strapped mains.
    15. ARP Fasteners on Heads,Mains and Big Ends
    16. Air Gap Intake
    17. 850 DP Holley - Jetting unknown
    18. Timing Gear Set - no chain
    19. Mallory Marine Ignition
    20. Pretronics Electronic Rev Limiter
    21. 12JC Berkeley with hydraulic PD - "A" Aluminium Impeller (SS "A" and Inducer to be fitted.)
    22. 16ft Kona
    23. XRP fittings and pipes.

    Wikus


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