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Thread: MRP 7age/9age 1900cc Stroker Kit

  1. #1
    Forum Sponsor Domestic Engineer Bazda's Avatar
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    Default MRP 7age/9age 1900cc Stroker Kit

    MRP 7a (aka 9age) Stroker Kit

    After huge request we have designed a 7age/9age stroker kit (1900cc).
    This will not be your generic stroker kit with bad rod/stroke ratios
    (Others on the market use OEM style 4age pistons with shorter rods which brings the rod/stroke ratio down to 1.44 which is less than ideal in the modern world of building a good reliable engine!)

    The pistons in this kit are a special custom design where we worked with CP to get what we needed.
    Rod/stroke ratio is 1.52:1

    Custom MRP 90mm Billet 4340 Crank based on the TRD/Atlantic Crank Design
    8 Bolt to take 4age flywheels
    OEM 4age journal sizes so you can use the OEM 4age size bearings
    Oversize oil gallery holes which allows more oil to pass through the bearings
    Oil gallery chamfer lead in/out which aids in flowing the oil in/out of the gallery holes
    Oil gallery feeds are the same as the 4age crank meaning constant 360 degree of oil supply to the journals at all times unlike the 7afe crank.
    Large counter weights to dampen harmonics at high RPM,
    Dual crank sprocket keyway for those wanting to run this option.

    Custom MRP Billet 4340 conrods with ARP 2000 bolts
    Around 6% longer than the 7a rods
    I-Beam & H-beam available
    I-beam being the stronger but heavier of the 2 (These are like Argo Rods)
    H-beam is similar to Eagle, Spool etc.
    Rods are notched on the journals which acts as an oil squirter up into the bottom of the piston

    Custom MRP Forged Pistons by CP
    Low compression height, 20v & 16v available in both N/A & Turbo to any compression you require.
    Rings & gudgens supplied

    Power rating of the kit 800hp+ & 10,000rpm+

    $3750NZD

    Notes
    Must be used with a 7afe block
    No modifying of the block is required

    If your fitting oil squirters into the block from a 4age engine and worried about clearance, the crank has been designed to clear the oil squirters.
    Takes 4age flywheels









    Last edited by Bazda; 21-05-2013 at 12:30 PM.
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  2. #2
    AW11 <3 Too Much Toyota trdee's Avatar
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    Default Re: 7age/9age 1900cc Group Buy!

    will this require "clearancing" of the block or any other shenanigans of the sort? 3k for the full setup is bullshit cheap...

    any ideas on power and RPM ratings?

    also will we be able to specify whatever comp ratio we want?

    edit - pending the above, count me in.
    Last edited by trdee; 02-09-2012 at 08:35 PM.
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  3. #3
    Junior Member Chief Engine Builder dnegative's Avatar
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    Default Re: 7age/9age 1900cc Group Buy!

    Fuck that's bullshit cheap, you would easily pay that for a regular 4AGE kit

  4. #4
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    Default Re: 7age/9age 1900cc Group Buy!

    what is the pistons comp height for this kit? you can go for 25mm c-c like on Ninja zx14r to help rod length.
    incredible price!!!

  5. #5
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    Default Re: 7age/9age 1900cc Group Buy!

    Quote Originally Posted by trdee View Post
    will this require "clearancing" of the block or any other shenanigans of the sort? 3k for the full setup is bullshit cheap...

    any ideas on power and RPM ratings?

    also will we be able to specify whatever comp ratio we want?

    edit - pending the above, count me in.
    Yes you will be able to specify the comp ratio you want.
    The kit will be designed to handle over 800hp if needed.
    RPM ratings - thats up to how game you are! but should easily be around 9000rpm capable.

    Quote Originally Posted by liteace View Post
    what is the pistons comp height for this kit? you can go for 25mm c-c like on Ninja zx14r to help rod length.
    incredible price!!!
    Piston comp height is the key in this kit and the pistons will be a special design. And yes its gona be tiny!
    The rod length we are using is around 6% longer than the stock 7a rods.
    1988 Toyota Levin GTZ 10.88 @ 209.57 340kw
    Now 9AGTE 410kw atw
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  6. #6
    Building Corollas Chief Engine Builder Cuzzo's Avatar
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    Default Re: 7age/9age 1900cc Group Buy!

    Subscribbled
    KE30 4agte - Bullet - Rick Rolled
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    Quote Originally Posted by -GT- View Post
    You had an oil and plastics engine bay fire, with flames that reached at least to the roof - of course shit got hot, it wasn't burning jiffy firelighters back there.

  7. #7
    Forum Member 1st year Apprentice
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    Default Re: 7age/9age 1900cc Group Buy!

    Count me in for a kit !! Just hope it makes it here before Christmas !!

    wrenchdad

  8. #8
    AW11 <3 Too Much Toyota trdee's Avatar
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    Default Re: 7age/9age 1900cc Group Buy!

    Quote Originally Posted by Bazda View Post
    Yes you will be able to specify the comp ratio you want.
    The kit will be designed to handle over 800hp if needed.
    RPM ratings - thats up to how game you are! but should easily be around 9000rpm capable.



    Piston comp height is the key in this kit and the pistons will be a special design. And yes its gona be tiny!
    The rod length we are using is around 6% longer than the stock 7a rods.
    consider me to be in at this stage then. ill let some other people know who might also be keen

    will keep the money ready and waiting
    AW11 9A-GTE GTX3071R - project | ZN6 86 GTS - daily
    Quote Originally Posted by Rex_Kelway View Post
    .....and the within first laps everything that made the AW11 great hit Rex as if the 'Gods of driving fun' had all Jizzed on his face.....
    Quote Originally Posted by JustenGT8 View Post
    Mono blocs mate....as close to yours as a Ferrari is to a Fiesta

  9. #9
    SC14'd Member Domestic Engineer nick.parker's Avatar
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    Default Re: 7age/9age 1900cc Group Buy!

    Ok....I'm in too.
    I was already in the process of getting prices for custom rods and pistons to make a 1.6:1 rod / stroke 7AFE with standard stroke. But no point now
    == 4AGZE SC14 Supercharged ==
    Now flogg'n the SC14 @ 18psi....

  10. #10
    Forum Sponsor Domestic Engineer Bazda's Avatar
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    Default Re: 7age/9age 1900cc Group Buy!

    We have pretty much sorted the crank and rods.
    Just working on piston designs with some usa companies (JE, Wiseco, Cp & Ross).
    Once they are confirmed we will be taking deposits.
    1988 Toyota Levin GTZ 10.88 @ 209.57 340kw
    Now 9AGTE 410kw atw
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  11. #11
    Junior Member Domestic Engineer
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    Default Re: 7age/9age 1900cc Group Buy!

    Hey Bazda who is making the billet cranks ? do they do one offs for other motors
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  12. #12
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    Default Re: 7age/9age 1900cc Group Buy!

    Quote Originally Posted by Zammo View Post
    Hey Bazda who is making the billet cranks ? do they do one offs for other motors
    We cant do one offs, there is a minimum buy.
    Whos making them. We have a few suppliers in mind but not settled on 1 yet.
    1988 Toyota Levin GTZ 10.88 @ 209.57 340kw
    Now 9AGTE 410kw atw
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  13. #13
    Junior Member Domestic Engineer
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    Default Re: 7age/9age 1900cc Group Buy!



    one off billet cranks are expensive and no one makes them

    Once apon-a-time world famous Photochopper

    http://zammothechoppa.deviantart.com/ : )

  14. #14
    Building Corollas Chief Engine Builder Cuzzo's Avatar
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    Default Re: 7age/9age 1900cc Group Buy!

    I'm in bazda
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    Quote Originally Posted by -GT- View Post
    You had an oil and plastics engine bay fire, with flames that reached at least to the roof - of course shit got hot, it wasn't burning jiffy firelighters back there.

  15. #15
    That's me before i was a Conversion King -GT-'s Avatar
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    Default Re: 7age/9age 1900cc Group Buy!

    Don't mind me, just subscribing and going back to lurking while i try and figure out how i could possibly justify this... (it's unlikely, so don't count me in just yet)
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  16. #16
    Forum Sponsor Domestic Engineer Bazda's Avatar
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    Default Re: 7age/9age 1900cc Group Buy!

    Added to the list.

    Hopefully we get this sorted before we leave overseas for a bit!
    1988 Toyota Levin GTZ 10.88 @ 209.57 340kw
    Now 9AGTE 410kw atw
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  17. #17
    Olde mechanic Automotive Encyclopaedia oldeskewltoy's Avatar
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    Default Re: 7age/9age 1900cc Group Buy!

    What is the stroke for this kit?
    Information is POWER... learn the facts!!

  18. #18
    Forum Sponsor Domestic Engineer Bazda's Avatar
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    Default Re: 7age/9age 1900cc Group Buy!

    Quote Originally Posted by oldeskewltoy View Post
    What is the stroke for this kit?
    90mm stroke

    The rod/stroke ratio is going to be 1.55:1.
    1988 Toyota Levin GTZ 10.88 @ 209.57 340kw
    Now 9AGTE 410kw atw
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  19. #19
    loves hi RPMS Backyard Mechanic
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    Default Re: 7age/9age 1900cc Group Buy!

    what size piston are you looking at using bazda? 81, 82, 83mm?
    N/A for life...

  20. #20
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    Default Re: 7age/9age 1900cc Group Buy!

    Quote Originally Posted by xero View Post
    what size piston are you looking at using bazda? 81, 82, 83mm?
    Conservative 81.5mm which makes the total 1878cc
    82mm would be 1901cc
    82.5mm 1924cc

    You can choose the size of the piston but we like to stay safe at 81.5mm
    1988 Toyota Levin GTZ 10.88 @ 209.57 340kw
    Now 9AGTE 410kw atw
    www.mrpltd.co.nz - Manon Racing Products
    Turbonetics|Custom Coilovers|4/6 Piston custom brake kits|Twin/Triple custom clutch setups|+ MORE
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