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#1 |
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![]() 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. ![]() 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. |
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#2 |
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Car: E46 M3 Individual, E36 M3 track car, Landrover Defender E53 X5, E38 730, E30 318is, E30 Mtec touring
Colour Combo: Techno Violet/silver gray
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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 |
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#3 |
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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. |
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#4 |
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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.
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#5 |
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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 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. |
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#6 |
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Car: E46 M3 Individual, E36 M3 track car, Landrover Defender E53 X5, E38 730, E30 318is, E30 Mtec touring
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yup, like everything bought from China, don't trust their fasteners if in a critical application
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#7 |
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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. |
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#8 |
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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. |
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#9 |
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#10 |
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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. ![]() 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. 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. |
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#11 |
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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. |
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#12 |
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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 ![]() |
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#13 |
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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 ![]() 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. |
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#14 |
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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 |
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#15 |
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Please tell me you’re going to buy proper arp bolts!!
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#16 |
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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. |
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#17 |
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How are you getting on with the build Iain?
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#18 |
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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
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#19 |
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#20 |
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