Hi All,

I have a 1275LS crank that I am going to get stroked as finances permit. Can any one recommend a place in either Newcastle or Sydney. Also how many $$$$ do you think I will be looking at?

I already have the S rods available and will but some 73.0mm Hypertec pistons.

cheers
Jim

Recommend a place to stroke a 1275LS crank?...well I don't really like to talk about this sort of thing in public...but OK.....the webs are a little rough so I steer clear of them, the nose is too purposeful and there are some sharp edges there....so the journals....oh yes...the journals...thats the place to stroke a 1275 crank:oops:

Oh you meant machining work....I have only heard mention of one place up your way and I suggest the Novacastrians on Ausmini should talk about that....MiniMonaro etc

How hard is it for you to get down to Sydney?? lots of possibilities there..

_________________
"Show me the Mini!"

St George Crankshafts (Spiro Georgiou)
2/9 Bearing Rd Seven Hills 2147
ph (02) 9674 1201
mobile 0417 276 030.
He did mine recently.
He charges around $240 to stroke it, with all journals ground.

`Crack test' it (stand it on one end, ping the top crankweb with a spanner) before you ship it. Out of the last 5 of these he got, 3 were cracked already..
Should ring like a bell when you do this. If not, it's probably a dud..

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

I work in lovely downtown Castle Hill so Sydney is not a problem.

That sounds good Dr Mini, Seven Hills is nice and easy as well. Does the $240 include getting it tuffrited (spell?) I have heard that getting it hardened is where it can all go wrong....

Thanks for the info

Jim

No it doesn't include tuftriding, or nitriding, which is more common now.. I investigated this a while back, and like 99% of Graham Russell's race motor customers, I'm now leaving mine as is.. it's 84.3mm stroke with std/std bearing sizes. (I saved a bit of $$ as the std mains were mint).

Spiro grinds all GR's cranks, and does nice work.

I've seen a stroker 12G1505 crank that had been `nitrided'- when it all went pear shaped on the track, it wore the pins just like a standard 1100S crank would.

<edit> Quoted from www.matter.org.uk -
"To get a hardening effect on nitriding the steel must contain strong nitride forming elements such as Al, Cr and / or V."

Note that EN16 steel used in these cranks has no Al, or V, or Cr.
It's a Manganese Moly steel-
C 0.32-0.4%, Si 0.1-0.35%, Mn 1.3-1.7%, S 0.04% max, P 0.35% max, Mo 0.22-0.32%


Anyhow why not ring Spiro and discuss it, or go see him...

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Thanks for all the info Dr Mini,

I will give Spiro a call and have a chat. It sounds like they do very good work which is reassuring (sometimes hard to find)
thanks again,

Jim