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frankenstien motor questions

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    #1

    frankenstien motor questions

    hey guys i have a few questions about a potential build im thinking of doing. ill lay it out in parts and see what you all think. i dont know how to do all the numbers things with the compression calculator or know how it all works, but i have been plugging numbers all day. see if this makes any sense to you guys. keep in mind these are all parts i have laying around or can get for a decently cheap price minus pistons.

    head h22a1 dual valvesprings in head and possibly the ever elusive type s cams.
    block f22a1
    stronger f22a1 rods
    wiseco k20a2 pistons ( http://www.promotiveconcepts.com/wipi20acrsxt.html ) not sure which ones to get. want to stay somewhere around 9.1.1 for boost purposes.
    and obviously a new engine overhaul. running the h22a timing belt stuff and crank timing belt pulley.
    i would most likely be running a log manifold with an h22a intake mani.

    what do you guys think? i have about 900-1200$ to play with and wanna go for around 300 hp or so.
    Tags: None
    #2
    general dimensions of pistons dont take them to heart each one is obviously a lil dfferent.


    Bore: 86.00mm
    Oversize: STD
    Stroke: 86
    Rod Length: 139
    Comp Ht: 30
    Head cc's: 50.5
    Dome Dish: -9
    Gasket Thickness: .63
    Deck Clearance: .025-
    Block Ht: 212
    Comp. Ratio: 9.0
    Pin Diameter: 22mm

    full listings for all pistons mentioned


    http://www.euroexportinc.com/store/WisecoCatalog.pdf

    Comment

      #3
      no thoughts or ideas guys?

      Comment

        #4
        Why not use a full H22 block? You're only increasing the potential for failure by creating a frankenstein motor.






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          #5
          this is true but my buddies block is toast nor do i want anything to do with the frm sleeves since pistons are expensive to source for them and i want to run lots of boost. does the parts list seem right? im having trouble figuring the whole piston thing out. hate to spend alot of money on pistons and only have 6.1.1 comp or some retarded high number aswell. i know you can put the k20 pistons in the f22 block but the problem im having is if it will sit to high or low in the block i dont understand how to read the spec sheet i guess is what im getting at.

          Comment

            #6
            If you're getting aftermarket pistons, I'd suggest getting F22 pistons, rather than trying to make the K series work. They DO fit, I'm told... but I hate the idea of mixing parts. The more creative you get, the more you increase the chance of something failing. ESPECIALLY when you boost it!

            There are lots of affordable pistons for the F22, and you can probably find quite a few people selling off parts that they purchased for a project that they are no longer planning to follow through with.


            That makes sense about the block. However, why not just boost with an F22 head instead? It may not look as fancy, but it will perform just as well.


            You'll want to tear down your block and hone the cylinders... THEN measure and make sure you get the proper piston clearance. Also, consider what type of pistons you get. Pistons designed for N/A performance are going to be stiffer and more brittle. Tighter clearances, but boost could shatter them. Pistons designed for turbo are often made from a material that allows for expansion, so clearances aren't quite as tight (which can do a number on the sleeves over time, be advised...) but will be much stronger under boost.






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              #7
              Just use the stock f22 head and block I bought I set of arias forgred aluminum turbo/nitrous dished pistons using stock rods and didn't need to rebalance my crank, running 15psi daily like a dream and it hauls ass too...8.2:1 comp too btw
              Last edited by slowaccord; 11-17-2010, 06:51 AM.

              Comment

                #8
                what did the pistons run you?

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