engine rebuild pricing

Discussion in 'Engine maintenance, upgrades and modifications' started by Mrd1984, Sep 14, 2017.

  1. 14 Sep 2017 at 3:38 PM #1
    Mrd1984

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    Hi guys,

    So im pricing up all the parts to rebuild my M3 engine.

    Just trawled ebay for various parts and came across some (probably Chinese) con rods called maxspeedingrods h beam conrods. :muttley:

    Don't worry, I don't plan on buying anything this cheap and nasty but wanted to know if anyone else has been brave enough to build an engine with this spurious brand.
     
  2. 14 Sep 2017 at 4:00 PM #2
    DaveMSport

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    Haven't seen their conrods but know people using they're coilovers on an E36 M3 Drift car and they seem to be ok.
    I'd be slow to use the rods though as even if they're cheap, the difference between them and tried and tested quality ones isn't huge compared to the overall cost of building an engine if renewing a good bit of it
     
  3. 9 Oct 2017 at 9:47 PM #3
    Mrd1984

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    Just going to revive this one...

    Has anyone here had their engines rebuilt recently. Our E46's are all gaining miles. Mine certainly has!

    Im interested in knowing what others have paid and been quoted.
    and what the quotes entailed.
     
  4. 12 Oct 2017 at 10:32 PM #4
    7DT

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    Same here. I'm looking at a rebuild and it's be nice to have an idea of cost and time and options.
     
  5. 16 Oct 2017 at 2:37 PM #5
    Iain

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    apparently the rods are good but the bolts are not to be trusted.

    I will give them a punt on the next engine, some very credible people have suggested they are surprisingly good but that they had a bolt failure and question if the bolts are genuine.

    I am not going to name names as i don't think its fair given that this was a conversation had in good faith with a lot of information given.

    Either way, I was surprised, and will be putting my money where my mouth is, but will be sourcing bolts independently.
     
  6. 16 Oct 2017 at 2:58 PM #6
    DaveMSport

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    yup, like everything bought from China, don't trust their fasteners if in a critical application
     
  7. 18 Oct 2017 at 11:34 AM #7
    Mrd1984

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    Interesting. Were these rods used for a standard road car or was it for track use?
     
  8. 20 Oct 2017 at 2:45 PM #8
    Mrd1984

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    Any idea on how heavy they are compared to a known brand like arrow?
     
  9. 20 Oct 2017 at 3:26 PM #9
    cossie1

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    They will weigh a ****ton (true actual measurment) compared to Arrow.

    But then they are (without looking) probably about 1/10th of the price of Arrow too :muttley:
     
  10. 20 Oct 2017 at 4:31 PM #10
    Racer

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    I have a set of these in my 240z track car, and you will be surprized how good they are. My mate has also built 3 engines with these rods and has had no issues.

    Now if you were thinking about supercharging then something a bit beefier might be a wise move.
     
  11. 26 Oct 2017 at 2:19 AM #11
    Iain

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    I don't want to go into too much detail as people will make judgments without thinking as per usual.

    However the information i was given came from a very respected and well known race engine builder who had spark erosion tests carried out on them and found that the actual materials were better than those of arrow etc (i **** you not) now bear in mind that just because the material is "better is better does not automatically make it better for the application and does not take into account the design of the rod. For example you Dont make a block from titanium for good reasons, but by most measurable tests titanium is a "better" material.

    Anyway, cir 20 race engines built with the max rods with one fastener failure.

    I am going to give them a go on the current engine build. But thats my choice, not me saying that they should be yours.
     
  12. 26 Oct 2017 at 5:36 PM #12
    Mrd1984

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    thats very interesting!

    So basically they are fine to use as long as you're not going to charge the engine and use different fasteners.

    I take back my laughing mutley!!

    Im pulling the engine soon and this comes a quite refreshing news. I might try and buy an individual rod and get our stress department at work to see what they are like.

    thanks for your input.

    I will of course update if i do test one of these in R&D:thumbsup:
     
  13. 26 Oct 2017 at 7:41 PM #13
    Iain

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    please do, it would be interesting to know others thoughts.

    I make no claims that they are any good, simply that i have been told by a reputable source that they are and that there was no commercial gain in them passing this information to me.
     
  14. 23 Nov 2017 at 12:44 AM #14
    Iain

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    well mine have arrived.

    I have checked then dimensionally and they measure fine. On calibrated scales they weigh to within 0.7g of each other so well within the claimed 1gram spec
     
  15. 23 Nov 2017 at 8:46 AM #15
    Mrd1984

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    Please tell me you’re going to buy proper arp bolts!!
     
  16. 23 Nov 2017 at 10:58 AM #16
    Iain

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    Yes, as i stated earlier in the thread.

    The ones supplied do look like the real deal, and appear good quality, look like rolled threads, all the correct identifying marks etc, but the colour is different to the arp's (and i have bought a lot) that i have had in the past.

    I won't be risking them, given the apparent construction of the rod it would likely make an even bigger mess than usual.
     
  17. 10 Jan 2018 at 10:37 PM #17
    Mrd1984

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    How are you getting on with the build Iain?
     
  18. 12 Jan 2018 at 11:30 AM #18
    Iain

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    bit of a backburner at the moment, i am mulling over the next big step, in terms of do i bore the block or not. I have excellent stock pistons that would be used with new rings and save me a lot of time and money. However the bores are not absolutely mint on the donor block (usable but not perfect) and i would quite like to up the compression, but the head had a heavy skim (for this reason) and i don't really want to run into clearance issues. Decisions decisions
     
  19. 12 Jan 2018 at 11:52 AM #19
    MaximumBob

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    Isn't the conrod weight a crucial factor?
    Apparently there are 10 S***loads per metric F***ton! Who knew?
     
  20. 12 Jan 2018 at 12:34 PM #20
    Chady

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    I’m in the process of rebuilding spare csl motor, all striped now, head work valves re lapped, crank hand polished, ready to go, compleat head gasket set £180. King race mains and rod. £280 from memory new rings £120 full set, was possibly thinking wossner pistons, But will may use stay with oem, open ended book on how far u go regarding parts. Have asked for feedback on parts in the past with little feedback,guessing most don’t go this far ..This is just a fun rebuild not serious race build , doesn’t seem much around on this subject :thumbsup:
     

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