Welcome to the North American Subaru Impreza Owners Club Thursday September 18, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Built Motor Discussion

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 12-12-2012, 08:53 AM   #1
3MI Racing
Former Vendor
 
Member#: 200987
Join Date: Jan 2009
Chapter/Region: MAIC
Location: VA
Default Gauging Interest: Custom batch nitrided cranks.

Hey guys,

I've had a few guys PM me recently about buying nitrided OEM cranks. I'd done these before but it was for a destroked group buy, so it isn't something that I normally stock. It is nice and they do supply lab results. They only 'cook' in batches of 'like' items (size, mass, thickness) so that the impengment is even on the pieces and you have a quality finish and hardness.

I used early cranks (of course non-nitrided) and usually get them at a pretty good price. This process does however roughly double their cost after processing and shipping. So you guys at least have a ballpark on price.

The batch sizes start at 10 pieces and they pricing structure scales up as we move to the larger chambers (more pieces per batch).

Let me know your thoughts,

Micah
* Registered users of the site do not see these ads.
3MI Racing is offline   Reply With Quote
Old 12-12-2012, 08:59 AM   #2
...CHUCKLES...
Scooby Specialist
 
Member#: 149674
Join Date: May 2007
Chapter/Region: SCIC
Location: at your moms
Vehicle:
2006 LimitLess STI
SGM

Default

Would you be providing just nitriding process or would you offer other process's as well EX: heat treat, micro polished journals, cryo treatment ect...?

It is awesome to hear you doing this.
...CHUCKLES... is offline   Reply With Quote
Old 12-12-2012, 12:48 PM   #3
Matty_STi
Scooby Newbie
 
Member#: 333602
Join Date: Sep 2012
Chapter/Region: W. Canada
Vehicle:
2012 STi
DGM

Default

sounds interesting, what about knife edging, cross drilling?

Matt
Matty_STi is online now   Reply With Quote
Old 12-12-2012, 01:48 PM   #4
3MI Racing
Former Vendor
 
Member#: 200987
Join Date: Jan 2009
Chapter/Region: MAIC
Location: VA
Default

I hadn't planned to do other services to the cranks but might entertain the idea. I use to cryo parts (cranks, rods, rings) locally but have stuck strictly with nitriding the cranks.

The 75mm cranks that I use are already cross drilled with the 45* offset in timing. 79mm cranks, I'd thought about doing it but really don't think it's necessary if proper attention to clearances and machining is followed.

Knife edging an EJ crank, well that probably isn't worth the time and money compared to a SBC or even inline 4. The throws are tiny as it is.

The micropolishing or a WPC treatment could be potentially added but it's just as easy to do it yourself once you have the crank. It's not like they need batches to process. These steps, I'd also suggest doing after balancing.
3MI Racing is offline   Reply With Quote
Old 12-13-2012, 11:46 AM   #5
3MI Racing
Former Vendor
 
Member#: 200987
Join Date: Jan 2009
Chapter/Region: MAIC
Location: VA
Default

So I guess it's safe to say that there isn't that much interested
3MI Racing is offline   Reply With Quote
Old 12-13-2012, 12:09 PM   #6
...CHUCKLES...
Scooby Specialist
 
Member#: 149674
Join Date: May 2007
Chapter/Region: SCIC
Location: at your moms
Vehicle:
2006 LimitLess STI
SGM

Default

Well if you do a batch I will probably take one for a second build. How many would you do for a batch?
...CHUCKLES... is offline   Reply With Quote
Old 12-13-2012, 12:25 PM   #7
aboothman
Scooby Specialist
 
Member#: 127745
Join Date: Oct 2006
Chapter/Region: NWIC
Location: Humboldt County
Vehicle:
06 WRX 30r 6 speed
99L EJ255 6 Speed

Default

It would help to explain why this nitriding is better than the OEM treatment...even though it is not available anymore. I forgot what you told me a while back.

AND it is right before Christmas
aboothman is offline   Reply With Quote
Old 12-13-2012, 01:13 PM   #8
KillerRabbit
Scooby Specialist
 
Member#: 184772
Join Date: Jul 2008
Chapter/Region: MWSOC
Location: Chicago, IL
Vehicle:
2004 Crazy Slow WRX
World Rally Blue

Default

Its a possibility that i would be interested. I was going to buy a new OEM crank for my other motor. Maybe this would work out better. Any more details?

Aaron
KillerRabbit is offline   Reply With Quote
Old 12-15-2012, 01:00 AM   #9
mod maniac
NASIOC Supporter
 
Member#: 300551
Join Date: Nov 2011
Chapter/Region: SCIC
Location: mariposa ca.
Vehicle:
2&4 fxt & fxt sti
Fullers Garage

Default

I am giving serious thought to destroking a 2.5 let me know if you are doing some cranks and the cost.
mod maniac is offline   Reply With Quote
Old 12-15-2012, 06:18 AM   #10
NucleonQ8
Scooby Newbie
 
Member#: 249487
Join Date: Jun 2010
Chapter/Region: International
Location: Kuwait
Vehicle:
2009 WRX 4D
OBP

Default

I'd be interested in a 75mm.
Doing a destroked 2.5l in the near future so yea....a group buy would be awesome
NucleonQ8 is offline   Reply With Quote
Old 12-15-2012, 08:43 AM   #11
rexworx
Scooby Guru
 
Member#: 103232
Join Date: Dec 2005
Chapter/Region: Tri-State
Location: EWG3071KelfordCams276/272
Vehicle:
MY05 GDA,MY04FXT6spd
2.5ltr,PPG,Front LSD,4.44

Default

Ive heard the older 79mm forged cranks were stronger then the newer nitride coated cranks. Is this true and is this a reason you want too offer this service?
rexworx is offline   Reply With Quote
Old 12-17-2012, 02:31 PM   #12
3MI Racing
Former Vendor
 
Member#: 200987
Join Date: Jan 2009
Chapter/Region: MAIC
Location: VA
Default

Quote:
Originally Posted by rexworx View Post
Ive heard the older 79mm forged cranks were stronger then the newer nitride coated cranks. Is this true and is this a reason you want too offer this service?
yes, they are stronger and a 'bird' told me that it's because the earlier cranks had more manganese.

I would be offering 75 and 79mm stroke cranks in the GB.

To show pricing, I guess I need to start the GB and show the tiers in pricing per number of cranks.
3MI Racing is offline   Reply With Quote
Old 12-20-2012, 04:18 PM   #13
68Cadillac
Scooby Specialist
 
Member#: 95901
Join Date: Sep 2005
Chapter/Region: SWIC
Location: Las Vegas, USA
Default

I'm interested in a 75mm one.
68Cadillac is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 04:19 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.