forged crank?? - Turbo Dodge Forums : Turbo Dodge Forum for Turbo Mopars, Shelbys, Dodge Daytona, Dodge SRT-4, Chrysler PT Cruiser, Omni and more!

Engine - Turbo & Block Modifications and upgrades to maximize your Dodges turbo output & Improving strength and durability - pistons to crank.

 
LinkBack Thread Tools
post #1 of 10 Old 12-11-2012, 06:59 PM Thread Starter
Garrett Booster
 
Join Date: Jul 2011
Location: Downriver, MI
 
My Ride: 1987 shelby csx #18
1/4: 0.000

Posts: 158
Thanks: 0
Thanked 0 Times in 0 Posts
 
forged crank??

I am in the process of trying to buy a forged 2.2 common block crank. Atleast that is what the seller says it is. Can someone tell me where I would find the casting/part number that is stamped into this crank? Also how do you tell the difference between a common block crank and the other cranks, and how do you tell the difference between a 2.2 and 2.5 crank?
spearscrue is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 12-11-2012, 07:29 PM
Legendary Driver
 
GLHNSLHT2's Avatar
 
Join Date: Jan 2004
Location: Spokane, Wa
 
My Ride: 85 GLHT, 87 ShelbyZ,
Engine: 2.2 T2 and 2.5 T2
Induct: Turbo
1/4: 13.882

Posts: 10,648
Thanks: 0
Thanked 0 Times in 0 Posts
     
Re: forged crank??

look at the casting line. Cast cranks will have a very thin casting or parting line. Forged cranks have a wide line, like almost an inch. A 2.5 crank will be stamped with 2.5 on it.

Commonblock cranks have a lager diameter but shorter snout for the crank gear, non-commonblock have a narrower but longer snout for the crank gear.
GLHNSLHT2 is online now  
post #3 of 10 Old 12-11-2012, 07:59 PM
Level 2 Supporter
 
dragbaron's Avatar
 
Join Date: May 2006
Location: Clovis, NM
 
My Ride: Mopar!
Engine: 5.9 & 2.2 turbo
Induct: Turbo
1/4: 0.000

Posts: 1,576
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: forged crank??

The common block cranks take a smaller front crank seal than the '
non-common block ones.

Forged cranks have a wide parting line on them, where as cast cranks have a thin parting line.
dragbaron is offline  
post #4 of 10 Old 12-12-2012, 03:27 AM Thread Starter
Garrett Booster
 
Join Date: Jul 2011
Location: Downriver, MI
 
My Ride: 1987 shelby csx #18
1/4: 0.000

Posts: 158
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: forged crank??

Thanks for the info. It does have the wide parting line also the smaller seal diameter. So I'm pretty sure it is a common block forged crank from the info you guys gave me. I do not see any 2.5 stamped on it anywhere there are some #s stamped into the crank (doesn't look factory though) those #s are 35348 also in another spot 4168 and 6AL. The 6AL looks like it is the only factory #s cast onto the crank, the other #s looks like they where hand stamped. I have done a search on 2.2/2.5 crank casting #s and they do not match any of those, there is not enough #s. Where would I find the casting #s and 2.5 located on the crank?
spearscrue is offline  
post #5 of 10 Old 12-12-2012, 09:16 AM
Boostaholic
 
Join Date: Jan 2011
Location: St louis area
 
1/4: 0.000

Posts: 323
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: forged crank??

chrysler never made a 2.5 forged crank. if it is forged it will always be a 2.2 crank.

other forged crank indicators-

forged cranks will have a shiny appearance compared to a cast crank.

with a crank sitting on the ground standing straight up lightly tap it with a hammer, a cast crank will make a dull "thud" sound , a forged crank will ring like a bell when struck. this test will only work if crank is sitting on the ground.
ohnotagain is offline  
post #6 of 10 Old 12-12-2012, 11:02 AM
Level 1 Supporter
 
cawcislo's Avatar
 
Join Date: Jan 2003
Location: Thunder Bay Ontario Canada
 
My Ride: 87 Shelby daytona T2
Engine: 2.5 bored 0.20
Induct: Turbo
1/4: 13.785

Posts: 2,391
Images: 4
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: forged crank??

You could always take a pic and post it on here and someone can chime in.
cawcislo is offline  
post #7 of 10 Old 12-12-2012, 07:59 PM Thread Starter
Garrett Booster
 
Join Date: Jul 2011
Location: Downriver, MI
 
My Ride: 1987 shelby csx #18
1/4: 0.000

Posts: 158
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: forged crank??

All the info has really been helpful. I figured it out it is a forged crank and I bought it. Thanks again
spearscrue is offline  
post #8 of 10 Old 12-12-2012, 08:19 PM
Legendary Driver
 
GLHNSLHT2's Avatar
 
Join Date: Jan 2004
Location: Spokane, Wa
 
My Ride: 85 GLHT, 87 ShelbyZ,
Engine: 2.2 T2 and 2.5 T2
Induct: Turbo
1/4: 13.882

Posts: 10,648
Thanks: 0
Thanked 0 Times in 0 Posts
     
Re: forged crank??

Quote:
Originally Posted by ohnotagain View Post
with a crank sitting on the ground standing straight up lightly tap it with a hammer, a cast crank will make a dull "thud" sound , a forged crank will ring like a bell when struck. this test will only work if crank is sitting on the ground.
And a Masi forged crank will ring way longer than a T2 forged crank. Odd.
GLHNSLHT2 is online now  
post #9 of 10 Old 12-12-2012, 08:51 PM
Super Moderator

 
Dr. Johny Dodge's Avatar
 
Join Date: Apr 2010
 
1/4: 0.000

Posts: 10,446
Thanks: 0
Thanked 0 Times in 0 Posts
   
Re: forged crank??

it weighs more right ?
more molecules to get excited when ya tap it
Dr. Johny Dodge is offline  
post #10 of 10 Old 12-12-2012, 09:07 PM
Legendary Driver
 
GLHNSLHT2's Avatar
 
Join Date: Jan 2004
Location: Spokane, Wa
 
My Ride: 85 GLHT, 87 ShelbyZ,
Engine: 2.2 T2 and 2.5 T2
Induct: Turbo
1/4: 13.882

Posts: 10,648
Thanks: 0
Thanked 0 Times in 0 Posts
     
Re: forged crank??

oh yea it's like twice as much. Let me put it this way, I can take a Forged T2 shortblock or a 2.5 shortblock, attach my engine stand attachment to them, and lift them up into the engine stand by myself. When I got my Masi longblock we unloaded it out of the back of the caravan with an engine hoist right onto the engine stand. I tore it down to just the shortblock and thought ok I'll yank this off the stand and put it on the floor to take the bracket off of the block for the engine stand. I slid it out and as soon as it came free it went straight to the floor! I couldn't slow it down at all!

This is off Thedodgegarage: "Crankshafts- forged vs. cast. Forged is stronger but weighs 6-7 more pounds more than a cast crank! (The 2.2 16V Maserati forged crank is even worse- it's 23 pounds heavier then a cast crank)

I guess I'll have to weigh them to see. It's going to be interesting to see how fast it revs by losing almost 20lbs off the crankshaft. :)

GLHNSLHT2 is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Turbo Dodge Forums : Turbo Dodge Forum for Turbo Mopars, Shelbys, Dodge Daytona, Dodge SRT-4, Chrysler PT Cruiser, Omni and more! forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionaly, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome