im getting so annoyed now. pistons and rod help again !
Turbo Mini Forums

I reckon there are better ways to spend £1k especially on a turbo lump.

If something is worth doing, it's worth doing half of.

If your concerned about the rods get them balanced and polished and they are fine. Have to love over engineering :)

i htink its safe to asume that the only rods made here in the uk will be Arrow,

I may be wrong but these rods at £300 a set are cheap for a reason,

Arrow rods are getting on for £900 a set for a very good reason,

i wopuld like to think that Swiftune had there rods made here in the uk, for the price they have put on them,

as has ben siad previously90- 95% of machined components sold in mags for the aftermarket car sector are made in the far east,

if any "retailer" marketer claims that they are manufacturing i would suggest you ask to see there facilities,

don't you find it a little strange when some mini suppliers have no idea when they are getting there next batch of whatever in,

carl

WWW.FORCE-RACING.CO.UK PLEASE CLICK HERE

I'd still like to know waht all this double air re met is all about. I'm leaning towards it being a term that baffles the buyer, in that because they don't know what it is, it must be a special process and the reason why you pay over the odds. Now im not saying that these rods do not have some sort of special heat treatment, but the process itself is NOT called double air re melt. All the well known rod manufacturers use this term. Infact Google turns up nop other results other than ones about said rods.

Edited by Sprocket on 2nd Mar, 2011.

http://www.arrowprecision.co.uk/production_notes.html

Vacuum de-gassed nickel chrome alloy steel.

If something is worth doing, it's worth doing half of.

Double air remelt is not a term I'm especially familiar with, and that is coming from someone who works in the steel industry, and more specifically, at a plant that makes engineering steels, so alloy forging steels that you would reasonably expect rods to be made from.
The whole remelting in air concept is also a strange one- in all the treatment of steel, you are constantly striving to keep air or specifically oxygen OUT, as the presence of oxygen when steel is molten causes a reaction and creates iron oxides, rust to you and me, impurities in the grain structure to a manufacturer.
We process some of our steels, mainly for the aero industry, buy either vacuum arc remelting, or electroslag remelting. This already follows a vacuum degassing procedure when the steel was molten in the first place to remove gas bubbles and impurities, the entire steel ladle of 160T of molten plus 90T of ladle and refractory is placed in a tank, the atmosphere is then removed down to less than 1 mbar for most treatments. The remelting procedures mentioned above are carried out once the molten steel has been cast into ingots and is solid. It is then melted again in a slow process, the Electroslag uses slag covering to flux and remove impurities, the Vacuum Arc process remelts the ingot in a vaccum, hence removing impurities and gasses to give very high cleanliness steel.

But air remelt? Not one I'm familiar with.

To quote from Arrow on the link John posted

I would get someone who knows there onions on the charged A series to build your engine, your mates may be decent blokes but there giving you open wallet surgery that is not needed.

Speak to turbophil or benross on here i think there localish to you

I understand why hbeam rods are used because of strenght and there weight (when manufactured properly) i geussed there better for higher reving engines as i belive most use a+ worked rods such as you do carl. But as for the crank though, wouldnt a forged large counter ballance crank be more reliable than a a+ crank that has been worked?? Less vibration less chance of falier from what i can gather or am i wrong??

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

SC crank doesn't look to have large counter balances to me.

If something is worth doing, it's worth doing half of.

last time i looked the sc billit crank looked like a standard cast crank

Yes i moved to the darkside

Instagram @jdm_brett

Problem i see is cost when it goes wrong Paul, if i had bought a steel crank when my thrusts went i would be scrapping a £1.5k crank and rods rather than a £300 crank and rods.

If standard but reworked is perfect for a big power charged A series then why buy a crank thats really for a high revving A series.

Nothing wrong with having the best if you have plenty of cash but if you dont have plenty of cash............

or a con rod break (when not caused by the big end faliure)?

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Well thank you guys for clearing that one, tbh i havent seen of any faliures that hasent been caused by oil starvation of a bad build up, i wasnt on about the sc crank but med and swifteys new faux 5 bearing crank. Tbh the look of fully worked rods looks proper cool all nice and shiney )

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

shiny doesn't matter you never see em.

If something is worth doing, it's worth doing half of.

Shiney means smoother serfices and less oil drag

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

Smoother means no stress points, so less likely to break, but as said shiner means nothing unless you have a see through engine

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

If something is worth doing, it's worth doing half of.

I have seen a broken crank some years ago, same place as the one above. The engine still ran funilly enough. It was in a standard metro engine, so its got fuck all to do with performance, and more to do with fatigue. Perhaps as a result of an un balanced flywheel.

I agree though that the number of broken cranks could well be counted on perhaps one hand considering the actual number of cranks in high performance engines.

I'll never forget thta celebrity race thing where Melissa Joan Hart (phwar!! ) managed to snap the crank on a Mini Seven by missing a gear entering a corner, and buzzed the little thing to well over 10K