Thread: Clint Cooper's Turbo 3.5 Rover V8 Project

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  1. #21  
    Young Brit
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    Feb 2012
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    90
    > I will be mocking up custom exhaust manifolds that will push a single Garret To4b
    > turbo designed to run efficiently at 10-15lbs of boost

    Have you run the numbers on the intake port side to see if will lead to choked
    conditions? Which version of the T04B will you be running (-40, 60-1, 62-1,
    H-3, S3, V1-V2)? I ran Dynomation assuming the model for my stock longblock with
    Erson cam, a 650 carb and a Garret T04B-40. With a 10 PSI limit, it threw a
    choke flag. The T040B-60-1 did not choke and makes nearly 300 HP at the crank
    at 10 psi. At 15 PSI, it predicts around 340 HP.

    It will be interesting to see how well the stock cast pistons hold up to the
    boost. The Buick V6 used cast turbo pistons but they were a special design.

    As luck would have it, I came up with one of the Janspeed Rover twin turbo set ups:

    http://www.bacomatic.org/gallery2/v/hidden/dan/dan-cars/album10/Janspeed+Rover+V8+Twin+Turbo/

    Dan Jones
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  2. #22  
    Spitfire
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    Feb 2012
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    6
    Quote Originally Posted by JohnnyB
    Nice!! Look forward to seeing the progress!
    That's the result of giving effort with it.
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  3. #23  
    Dan,

    Pretty cool that you got that Janspeed setup. Do you plan on having it up and running on a car anytime soon? or is it just a nice show piece?

    I have not decided on the turbo yet. I think with the proper fuel mixture the pistons should hold up fairly well, but we will find out I guess. If need be I will go forged, but I want to see what we can do with a fairly stock setup and just bolt on accessories. I do not plan on running more than 10psi on the motor.

    Thanks
    Clint
    The Wedge Shop
    The Wedge Shop
    Fast.British.Reliable.
    www.thewedgeshop.com
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  4. #24  
    Young Brit
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    > Do you plan on having it up and running on a car anytime soon?

    No plans on using it at present. I have several engines ahead
    of it in the queue (4.2L Rover, supercharged, EFI 5.0L Ford,
    407C aluminum Ford, 331 small block Ford,) and am currently
    conducting a 351C Ford engine dyno project for the Pantera club
    which takes up much of my spare time. It would be for my TR7 coupe
    project but I've not decided on whether to go turbo or just a
    normally aspirated 4.9L stroker with ported Buick 300 heads.
    The extend of vehicle modifications is also uncertain. I'd like
    to do a Group 44 wide body clone but budget prevents that at the
    moment. If I do the Janspeed, it will be EFI and I might swap
    to a more modern pair of turbos. Something like the units on
    the Pontiac Solstice 2.3L. Those would make enough boost to
    split the block in half :-).

    > I have not decided on the turbo yet.

    If you'd like, I can run Dynomation on the one you pick or test
    several.

    > I think with the proper fuel mixture the pistons should hold up
    > fairly well, but we will find out I guess.

    Pay close attention to the ring gap. I'd follow the instructions
    on ring gap for forced induction/nitrous when using hyperuetectic
    pistons (cast pistons have the same vulnerability) on the Keith
    Black website.

    Dan Jones
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  5. #25  
    Dan,

    I do not see the info about ring gaps on his site? Can you point me in the right direction.

    I do have some very good technical expertise guiding me during this "experimental" build. Our engine shop of 19+ years, Erson Cams lead cam designer and of course the king of TR8's, my father Woody Cooper. All of which have a lot knowledge in the various areas needed to make the turbo 3.5 work well.

    I think it will turn out to be a pleasant surprise to a lot of people.

    Thanks
    Clint
    The Wedge Shop
    The Wedge Shop
    Fast.British.Reliable.
    www.thewedgeshop.com
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  6. #26  
    Young Brit
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    Feb 2012
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    > I do not see the info about ring gaps on his site? Can you point me in the right direction.

    http://kb-silvolite.com/article.php?action=read&A_id=32

    You might also want to call their tech line and ask about
    recommended ring gap with forced induction and their Silv-o-lite
    cast pistons.

    > All of which have a lot knowledge in the various areas needed to make
    > the turbo 3.5 work well.

    Good luck.

    Dan Jones
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  7. #27  
    Dan,

    Good stuff. Once I get all the specs down I will send it over to you for some number running.


    As you probably know we have done some 4.6 and 4.9's with the buick 300 heads and decent compression all with good results. Add a nice roller cam to that and you have yourself a winner.

    Thanks
    Clint
    The Wedge Shop
    The Wedge Shop
    Fast.British.Reliable.
    www.thewedgeshop.com
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  8. #28  
    Young Brit
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    > Good stuff. Once I get all the specs down I will send it over to you for some
    > number running.

    Sounds good.

    > As you probably know we have done some 4.6 and 4.9's with the buick 300 heads
    > and decent compression all with good results. Add a nice roller cam to that
    > and you have yourself a winner.

    If I do the turbos, it'll mainly be as a science project for myself.
    I've got most of the bits to the 4.9L stroker but it will likely be
    a solid lifter cam. I've got quite a bit of experience with roller
    cams but the cost increment for a Rover roller cam is just too great
    at present. One option would be ceramic face tool steel lifters but
    those are over $700 a set.

    Dan Jones
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  9. #29  
    Spitfire
    Join Date
    Feb 2012
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    4
    Dan,

    Would something like a gap-less ring be good in a turbo application. It's basically a double ring. The inner is L-shaped; the out nestles in the L and the gaps are spaced out 180°.

    When I put them in my TR3, the modification to the Deves rings I supplied was less than $50 for four, but this was 10 years ago. I learned about them from the vintage TR racers. They keep the leak-down numbers down much better over the long haul than do stock gapped rings.

    Jack

    EDIT: I just looked at the URL your provided for the end gap issue and realized I was thinking about the issue from the wrong side.
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  10. #30  
    Making slow progress. Finally came across a TR8 front cover and then sent that and my Harcourt intake off to get coated.

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    Thanks
    Clint
    The Wedge Shop
    The Wedge Shop
    Fast.British.Reliable.
    www.thewedgeshop.com
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