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Duckndive

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Posts posted by Duckndive

    When N/A is not enough

    in Forced Induction

    Posted

    Got me questioning myself now lol ill check one of my spare heads 2morrow lol

    LoL

    I,ve heard 2 different quotes the on Dot head being 22 / 23 cc........"THE ONE I HAD WAS 22cc" But that went to the gods yonks ago 

    Cant measure the other 1100 head I have as its got no valves in......

    But will measure the 1100k again...................may get an Adult to double check..................:pimp:

    :v

     

    When N/A is not enough

    in Forced Induction

    Posted · Edited by Duckndive

    Right done some proper measuring."cant do the dome without removing motor or jacking it up at stupid angle so used 10cc as mentioned else-ware"...9_9 and used two different calculators to get the static C/R

    5a89866bb983f_CompressionCalculator_1.thumb.jpg.1f57ba4342515c636963291b12dab78c.jpg

    5a89867bba700_CompressionCalculator_2.thumb.jpg.c02e321637b62d7754ff6c284c4090d1.jpg

     

    don't believe 5lb over on the 5hite forged studs sorry "precision machined items" was issue as they still had the same lbs on when I removed....

    Not had chance to clean up head and check surface......and speaking to a few peeps the unlucky bad gasket has been mentioned"

    Still onwards and upwards we now what the C/R was....and I still have 4.5 gallons off race fuel to burn....

    :v

    .

     

    • Like 1

    Ray Jay Turbo

    in Forced Induction

    Posted

    It's got all the right bits, just can't remember the spec, spec plate isn't present also.

    so how do I tell?

    oriiginaly bought direct from Tony Myers.

    Cheers  SRR

    Put up a couple of pictures ..someone will know

    gsxr1300 pistions and 750 dot head

    in Oil Cooled

    Posted

    1127 rods are 117mm

    Busa rods are 119.5mm

    Doing some basic calcs off the top of my head, 

    at 0 deck itll be around 11.2:1

    0.5mm below deck around 10.2:1

    1mm below deck 9.7:1

     

    Now thats not gospel, thats based on guestimates as im not a turbo guy but thats baseing it on some measurements ive got writen down from previous engines ive built. Hope this helps

    Not a million miles out.....:)

    This is where I start to get lost.

    My plan is to use mostly standard gsxr 1127 lump (head, crank, cons) and rebored to 1216 with busa Pistons in and then add a turbo. 

    I do have a set of gen 1 busa rods that came with the gen 2 Pistons (I know right) if that will help but I'm pretty sure they are longer. Also before anyone jumps on me I know gen 2 Pistons have smaller pins but that's beside the point. 

    Anyway I have no idea how I work out comp ratios and in turn how far below deck I need to be. I did try google but its still quite confusing working with formula. Any help? 

    there is a good calculator here ....http://www.cbperformance.com/v/enginecalc.html

    just make sure you select MM before starting 9_9

    • Like 1

    gsxr1300 pistions and 750 dot head

    in Oil Cooled

    Posted

    They will sit 1mm down from deck if you use 1052 rods on 1127 Crank.... 

    Vizman I know 2/5th off #uckall...........But I,ve never been afraid to join bits together to find out if it will work.............:v :tu

    I typed that wrong....:$

    It should read They will sit 1mm down from deck if you use 1127 rods on 1052 crank

    1052 & 1127 Rods are the same ..Crank stroke is different .. :tu

    • Like 1

    gsxr1300 pistions and 750 dot head

    in Oil Cooled

    Posted

    As they say 'A picture speaks a thousand words' but still confused as a few have been done with turbo builds and they appear to be low comp - certainly not as that picture would suggest....................so remain confused!

    They will sit 1mm down from deck if you use 1052 rods on 1127 Crank.... 

    Vizman I know 2/5th off #uckall...........But I,ve never been afraid to join bits together to find out if it will work.............:v :tu

    • Like 4

    gsxr1300 pistions and 750 dot head

    in Oil Cooled

    Posted · Edited by Duckndive

    I think Musphadump on the old site said he had to skim 1.2mm off the deck height to get the correct squish and compression. (1127 with busa slugs running n/a) 

    I.R.C.C. That was with an 1127 head.

    Mister dump said and promised a lot ...................

    And I recall a few had to chase him for some time to get there promised stuff back..................

    Then he suddenly dropped of the coupon  I also seam to recall

    :o

     

    • Like 1

    gsxr1300 pistions and 750 dot head

    in Oil Cooled

    Posted

    There was a good right up on old site about this by musthava (I think). Busa pistons are about 2mm down the block giving a comp of arount 8 to 1.

    Err I don't think so Gen 1 Busa Slugs on 1127 rods end gives a Zero Deck Height....In fact the inlet crown is a few thou above deck...:o 

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