Crank: knife-edged?

All technical questions and answers regarding starions, being modifications to maintenance.
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Lummy
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Crank: knife-edged?

Post by Lummy »

Hi all,

I know nothing about cranks, however I currently have my sump off and couldn't help but notice that my crank wasn't completely stock-looking.

Is this considered to be knife-edged or is it just a bit of grinding to balance it up? Not all counter-weights are done evenly - some have very little grinding, some have quite a bit.

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2000_turbo
Big Dorifto
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Post by 2000_turbo »

It looks like they did some work to your crank, but they did very little work.

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Stock crank.

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Knife edge crank.

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Gr,


Martijn.
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OLD FART
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Post by OLD FART »

Martijn how did you get into my shed to take a pic of my knife edged crank :shock: :? LOL
My KE'd crank is for sale :D
I've had mine since 03 07 92
85 JB 2323cc DOHC 4G63
THE OLDER I GET THE FASTER I WAS
GROWING OLD IS MANDATORY GROWING UP IS OPTIONAL
2000_turbo
Big Dorifto
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Post by 2000_turbo »

OLD FART wrote:Martijn how did you get into my shed to take a pic of my knife edged crank :shock: :?
The "doc" converted the flux capacitor into a transporter and build it in my Lancer... LOL


Gr,

Martijn.
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rodney007
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Post by rodney007 »

what does knife edged crank do,,..

thanks
redzone
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Post by redzone »

rodney007 wrote:what does knife edged crank do,,..

thanks
IT SLICES!

IT DICES!

IT JULIENNES!
Fibreglass airdams $370, fibreglass front bumpers $260, reco drag links $165, alloy radiators $925 (unpolished), h/l switch rebuilds $125, all plus freight.
Coxs Automotive (07)54433507 3/5 Service st Maroochydore Q

www.facebook.com/coxsautomotive
www.coxsautomotive.com.au
OLD FART
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Post by OLD FART »

They are said to improve responce by being lighter as well as having less drag.
If you want to see some radical cranks google BUTCHER CRANKS
I've had mine since 03 07 92
85 JB 2323cc DOHC 4G63
THE OLDER I GET THE FASTER I WAS
GROWING OLD IS MANDATORY GROWING UP IS OPTIONAL
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thrash
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Post by thrash »

is it correct to assume that this sort of mod would have an impact on response and driveability similar to that of a lightened flywheel?

I'm also assuming the machine shop needs to take care to ensure that the end product is balanced yes?
quest wrote:
WANTSOM wrote:Personally, I find sloppy boxes very unsatisfying. I like them tight and taught to the point that if you dont have to push to get it in then its probably too old and time to get a new one :P
don't try explaining that to her tho..... just leave. lol
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bridgey
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Post by bridgey »

OLD FART wrote:Martijn how did you get into my shed to take a pic of my knife edged crank :shock: :? LOL
My KE'd crank is for sale :D
what kind of $$$$$$? PM me maybe?
87 GSR-V, Factory DASH, Rebuilt bottom end with arp rod bolts and balance shafts removed, head reconed with 3 angle valve grind, TD05 housing machined out to take Garrett T4 internals, rebuilt and cryoed gearbox
rodney007
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Post by rodney007 »

redzone wrote:
rodney007 wrote:what does knife edged crank do,,..

thanks
IT SLICES!

IT DICES!

IT JULIENNES!

oh... ?
OLD FART
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Post by OLD FART »

bridgey wrote:
OLD FART wrote:Martijn how did you get into my shed to take a pic of my knife edged crank :shock: :? LOL
My KE'd crank is for sale :D
what kind of $$$$$$? PM me maybe?
Mate it was machined by a fitter machinist who competed in Targa Tasie 3 times and finished. It was for but never got into his lancer 2000
HE WAS 73 YEARS YOUNG THEN But unfortunately fell off the roof of s new shed he was building :wtf:
If you are serious I would have it checked to ensure that it is A OK & find out the postage to NZ
Cheers
Rad
I've had mine since 03 07 92
85 JB 2323cc DOHC 4G63
THE OLDER I GET THE FASTER I WAS
GROWING OLD IS MANDATORY GROWING UP IS OPTIONAL
redzone
racking my brains
Posts: 5900
Joined: Thu Oct 06, 2005 10:46 pm
Location: sunshine coast qld
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Post by redzone »

rodney007 wrote:
redzone wrote:
rodney007 wrote:what does knife edged crank do,,..

thanks
IT SLICES!

IT DICES!

IT JULIENNES!

oh... ?
being from NZ you wouldnt have seen the mouli ad on TV that was from..
Fibreglass airdams $370, fibreglass front bumpers $260, reco drag links $165, alloy radiators $925 (unpolished), h/l switch rebuilds $125, all plus freight.
Coxs Automotive (07)54433507 3/5 Service st Maroochydore Q

www.facebook.com/coxsautomotive
www.coxsautomotive.com.au
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bridgey
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Post by bridgey »

OLD FART wrote:
bridgey wrote:
OLD FART wrote:Martijn how did you get into my shed to take a pic of my knife edged crank :shock: :? LOL
My KE'd crank is for sale :D
what kind of $$$$$$? PM me maybe?
Mate it was machined by a fitter machinist who competed in Targa Tasie 3 times and finished. It was for but never got into his lancer 2000
HE WAS 73 YEARS YOUNG THEN But unfortunately fell off the roof of s new shed he was building :wtf:
If you are serious I would have it checked to ensure that it is A OK & find out the postage to NZ
Cheers
Rad
well I have had an estimate of $240 +gst to fix my crank so am looking at other options too
87 GSR-V, Factory DASH, Rebuilt bottom end with arp rod bolts and balance shafts removed, head reconed with 3 angle valve grind, TD05 housing machined out to take Garrett T4 internals, rebuilt and cryoed gearbox
OLD FART
Austarion Occupant
Posts: 3448
Joined: Sun Jun 19, 2005 1:34 pm
Location: Brisbane

Post by OLD FART »

Mate it was machined by a fitter machinist who competed in Targa Tasie 3 times and finished. It was for but never got into his lancer 2000
HE WAS 73 YEARS YOUNG THEN But unfortunately fell off the roof of s new shed he was building :wtf:
If you are serious I would have it checked to ensure that it is A OK & find out the postage to NZ
Cheers
Rad[/quote]

well I have had an estimate of $240 +gst to fix my crank so am looking at other options too[/quote]

By "fix it " hopefully that does not involve grinding it undersize as that will require re nitradeing .IMHO you will be better off with a crank that tests straight and only requires linishing of the bearing surfaces
I've had mine since 03 07 92
85 JB 2323cc DOHC 4G63
THE OLDER I GET THE FASTER I WAS
GROWING OLD IS MANDATORY GROWING UP IS OPTIONAL
User avatar
bridgey
Mine is bigger than yours
Posts: 311
Joined: Thu Dec 04, 2008 3:16 am
Location: Chrischurch

Post by bridgey »

OLD FART wrote:Mate it was machined by a fitter machinist who competed in Targa Tasie 3 times and finished. It was for but never got into his lancer 2000
HE WAS 73 YEARS YOUNG THEN But unfortunately fell off the roof of s new shed he was building :wtf:
If you are serious I would have it checked to ensure that it is A OK & find out the postage to NZ
Cheers
Rad
well I have had an estimate of $240 +gst to fix my crank so am looking at other options too[/quote]

By "fix it " hopefully that does not involve grinding it undersize as that will require re nitradeing .IMHO you will be better off with a crank that tests straight and only requires linishing of the bearing surfaces[/quote]

have not yet taken the crank for a proper assessment but it will probably need a 30-40thou grind
87 GSR-V, Factory DASH, Rebuilt bottom end with arp rod bolts and balance shafts removed, head reconed with 3 angle valve grind, TD05 housing machined out to take Garrett T4 internals, rebuilt and cryoed gearbox
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