4 cylinder bore & stroke combinations + max bore & stroke list

Discussion in 'Engines' started by A.N. Other, Jan 20, 2011.

  1. A.N. Other Banned after significant club disruption Dec 5th 2

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    Time we had one of these to refer to! Currently contains OEM + other combinations.

    Applies to the EA827 / EA113 engines, ie GTI blocks, short and tall, with some carry over to the 06A internal water pump designs, restricted by crank availabilty.

    Anything missing, let me know. Anything that can't be done, I'll remove the greyed numbers.


    Bore / stroke combinations

    Blue - OEM capacities
    Black - OEM parts or aftermarket parts
    Silver - theoretical, all subject to bearing diameters, rod dimensions & suitable pistons / end compression ratio.

    Bore

    Stroke Crank pin 76.5mm 79.5mm 79.75mm 80mm 80.6mm 81mm 81.5mm 82mm 82.25mm 82.5mm 83mm 83.5mm 83.9mm 84mm 84.5mm 85mm Notes
    73.4mm 46.0mm 1457cc 1467cc 1476cc 1498cc 1513cc 1532cc 1551cc 1560cc 1569cc 1589cc 1608cc 1623cc 1627cc 1646cc 1666cc Early 1500, cast
    77.4mm 47.8mm 1423cc**** 1595cc 1615cc 1635cc 1645cc 1655cc 1675cc 1695cc 1712cc 1716cc 1736cc 1757cc 1984-on 1.6s (Europe) & 1.4i Citi Golfs
    80.0mm 46.0mm 1471cc 1588cc 1598cc* 1608cc 1633cc 1649cc 1669cc 1690cc 1700cc 1711cc 1731cc 1752cc 1769cc 1773cc 1795cc 1816cc Audi 80 / Mk1 GTI, forged
    86.4mm 47.8mm 1715cc** 1726cc 1737cc 1763cc 1781cc 1803cc 1825cc 1836cc 1847cc 1870cc 1893cc 1911cc 1915cc 1938cc 1961cc 1800 GTI-on
    90.0mm 46mm 1995cc Eurospec 2.0 ABF 'Kit car', 19mm small ends, 150mm rods
    90.5mm 46.0mm 1865cc 1888cc 1912cc 1923cc 1935cc 1959cc 1982cc 2001cc 2006cc 2030cc 2054cc Oettinger
    92.8mm 47.8mm 1894cc 1913cc 1936cc 1960cc 1972cc 1984cc 2008cc 2033cc 2052cc 2057cc*** 2082cc 2106cc OEM 2.0
    94.5mm 46.0mm then 47.8mm 1948cc 1972cc 1996cc 2008cc 2021cc 2045cc 2070cc 2090cc 2095cc 2120cc 2145cc F3, Holbay + Oettinger
    95.5mm 47.8mm 1896cc 1908cc 1920cc 1949cc 1968cc 1993cc 2017cc 2030cc 2042cc 2067cc 2092cc 2112cc 2117cc 2142cc 2168cc Diesel crank
    99.0mm 47.8mm 2117cc 2143cc 2168cc 2189cc 2195cc 2211cc 2247cc Oettinger
    100mm 47.8mm 2138cc 2164cc 2190cc 2211cc 2217cc 2243cc 2270cc** Eurospec & Oettinger
    Notes Rallye F3



    Blue OEM capacity
    * Muller Tuning Group 2
    ** USA & Canada only
    *** AutoTech 2.1 kit
    **** South Africa
    Black aftermarket conversion capacities seen
    Grey theoretical (some may have been done - pls advise)
    90.5 cranks were made by Oettinger to enlarge the 1.6 engine. This was in time superseded by the 94.5, the 90.5 ceasing as the 86.4 beame mainstream and the capacity race edged towards 2 litres+.
    94.5 cranks were initially made with 46mm big end bearings to suit the 136mm rods on the 1588cc EG engine and similar. This later changed to 47.8mm to accomodate the 144mm rods of the DX-onwards. The Holbay crank was used in the UK by GTI Engineering, possibly to work around the fitment issue initially on early DX => cars.
    99 + 100 cranks assumed to fit in bubble blocks only



    Bespoke racing combinations

    - parts generally unavailable, cranks certainly, and pistons prohibitively expensive due to gudgeon pin height


    Bore

    Stroke Crank pin 76.5mm 79.5mm 80mm 80.6mm 81mm 82mm 82.25mm 82.5mm 83mm 83.5mm 83.9mm 84mm 85mm Notes
    88.1mm 46.0mm? 1998cc Audi A4 Touring Car
    89.5mm 46.0mm? 1984cc Ibiza Kit Car
    89.7mm 46.0mm? 1988cc Audi 80 Touring Car
    90.0mm 46.0mm? 1990cc Golf Kit Car
    92.2mm TBCmm 1996cc Skoda Fabia S2000
    94.0mm ? 1998cc F3
    Notes F3





    Maximum bores / strokes

    - max bore or stroke fitments, for particular blocks
    - part complete, info appreciated!


    Engine code OE capacity OE Bore OE Stroke Max bore Max stroke
    GH+more 1457cc 79.5mm 73.4mm
    FB, FD + more 1471cc 76.5mm 80.0mm < 79.5mm*
    1.6 EG non-H block 1588cc 79.5mm 80.0mm 82mm to confirm 86.4mm/90.5mm to confirm
    1.6 EG H-block 1588cc 79.5mm 80.0mm 83mm 94.5mm with block clearance work (90.5 still needs work)
    DX/EV/PB/KR 1781cc 79.5mm 86.4mm 84mm 91mm*/92.8mm with block clearance work
    6A/9A/ACE 1984cc 82.5mm 92.8mm 84-5mm 100mm**
    2E/AGG/ADY/ABF/AEB 1984cc 82.5mm 92.8mm 84-5mm 100mm**
    * according to VW Front Wheel Drive Performance Handbook (Greg Raven)
    ** largest known - it must fit in these!


    Tables are good! [:*:]
     
    Last edited by a moderator: Apr 3, 2018
  2. romaingirardlamamy

    romaingirardlamamy Forum Member

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    Well done mr chris nice topic

    So H block max bore 83mm but no room for a rebuilt
    Max stroke 94.5mm with some block grinding for the rods to swing by
    And the smaller gear for intermediate shaft or grinded gear

    For the EG block I believe there is less thickness on the cylinders so smaller bore I think 82mm max to be confirmed
    Max stroke is 86.4mm maybe 90.5mm but not sure about that neither

    I believe F3 engine was 94.5 mm stroke
    And read that oettinger was doing a 99mm or 100mm too

    I know of a french tuner boring DX up to 84 mm and fitting 92.8mm cranks with block work

    I did see the kit car kit for sale on some german tuners website
    With 90 mm crank 150 mm rods and 84mm pistons
     
  3. A.N. Other Banned after significant club disruption Dec 5th 2

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    Thanks Romain, I have added in your comments in green :thumbup:
     
  4. sparrow Paid Member Paid Member

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    Chris, mine is a 9A with 83mm pistons.
     
  5. A.N. Other Banned after significant club disruption Dec 5th 2

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    Cheers Alex, now showing in black as a known modded spec (turbo, but there's only so much I can get in that table).
     
  6. SimonG Forum Member

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    That table is tight, could you squeeze in a column for 81.5mm bore diameter? My KR with standard crank is now 1803 cc.

    Also check cc with 82.5 and 99mm crank, 2117cc. 6A/9A/ACE 1984cc 82.5mm bore, 92.8mm stroke :)
     
    Last edited: Jan 20, 2011
  7. A.N. Other Banned after significant club disruption Dec 5th 2

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    2117 corrected, thanks.

    I'm missing the point ref: 6A/9A/ACE

    Will try to get that extra column in.
     
  8. SimonG Forum Member

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    Max bore & stroke table.
     
  9. A.N. Other Banned after significant club disruption Dec 5th 2

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    Got it! Thank you!
     
  10. A.N. Other Banned after significant club disruption Dec 5th 2

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    Added :thumbup:

    Greys will follow later.
     
  11. chopperoli Forum Member

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    Chris, EG engines were H blocks in 1980, before that they were 1.6 blocks. So for your max bore table, the row with EG could be changed to '1.6 block'. Cheers
     
  12. sparrow Paid Member Paid Member

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    As it's simply bore and stroke combination, I wouldn't worry about induction method.
     
  13. A.N. Other Banned after significant club disruption Dec 5th 2

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    Ah, confused now. [:s] See here.

    Let's see if Romain chimes in, I'm sure it's the other way round :thumbup:
     
  14. romaingirardlamamy

    romaingirardlamamy Forum Member

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    Was waiting for someone to post the link as laptop not working only Blackberry for now

    I think the post say it all .... different block dimension
    And thicker wall on H block
    Robert Collin sources
    As well as H block used on formula 3 engine not 1,6 block
     
  15. A.N. Other Banned after significant club disruption Dec 5th 2

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    So which do you say came first Romain? EG or H?
     
  16. romaingirardlamamy

    romaingirardlamamy Forum Member

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    EG is engine types
    But they came with two different block 1.6 stamped and the H stamped block
    I would say 1.6 was there first then H came after
    Let's not forget the H block was design to fit as standard the 86.4 crank (1.7)
    Which will explain the upgrade
    Nothing sure tho just assumption

    But sure it take bigger stroke crank and got thicker walls
     
  17. A.N. Other Banned after significant club disruption Dec 5th 2

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    So I think the info is right as it was? I can't see the smaller EG block coming after the H, so it has to be that order. I have added 1.6 to both rows.
     
  18. nhoj62

    nhoj62 Forum Member

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    so what crank and bore/stoke combo does the RE1900 gti engineering engine have?
    and would the pistons be a standard off the shelf item or specials?

    thanks
     
  19. A.N. Other Banned after significant club disruption Dec 5th 2

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  20. nhoj62

    nhoj62 Forum Member

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    thanks for that chris but is that engine code right as my mates one is an 8v so would it not be a PB code?
     

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