MoparFins

Techical Discussions => Tech- - Engine => Topic started by: Anthony Prescott on October 04, 2010, 06:18:58 PM

Title: 331 hemi
Post by: Anthony Prescott on October 04, 2010, 06:18:58 PM
does anybody have any input on this engine? i got my hands on a 3/4 restored 53 chrysler new yorker deluxe. pretty car. it has the original 331 firepower hemi engine and automatic trans with the clutch, with 12xxx miles n it. i started it the other day and it purrs like a kitten... BUT... there was oily watery crap coming out the bottom of the bell housing . there seems to be a 2 inch drain tube there for something, but it drains the radiator. the strange thing is that there's no oily crap in the radiator. am i dealing with a head gasket issue, or maybe a freez plug? she still runs great. i dunno what it is.
Title: 331 hemi
Post by: Brian on October 04, 2010, 06:55:15 PM
I believe the 2" tube is the crank case vent tube.  It runs from the valley pan cover, near the back of the motor by the distributor, then down to the passenger side of the block.  So if you had gunk coming out of this tube then it might just be crud and stuff built up in that tube over the years?

Here's a pic of the tube on my 1952 331 Hemi, your should be the same, or close enough to get an idea.

(http://i697.photobucket.com/albums/vv340/thrashingcows/Garage/PICT0544.jpg)


Title: 331 hemi
Post by: Steve on October 04, 2010, 07:25:19 PM
The cow is 100% correct.
 
Is it milmy white or tan in the tube and looks like droplets of water in it?  Or do you just see a faint white vapor coming from it.
 
POLARACO2010-10-07 18:59:44
Title: 331 hemi
Post by: Anthony Prescott on October 06, 2010, 11:03:14 PM
yep. its the tube im talking about. its a white oily cruddy fluid. if its at the top of the crank case, why am i losing water?
Title: 331 hemi
Post by: Herman on October 07, 2010, 12:40:01 AM
Pull the intake and valley cover and have a look inside.
Be prepared to see things you didn't want to see though... ;)



Title: 331 hemi
Post by: Snotty on October 07, 2010, 09:03:05 AM
Quote from: POLARACO
 
Is it milmy white or tan in the tube and looks like droplets of water in it? 
 
I used to get that crap in my VW motor.  I always attributed it to the motor being air-cooled and no PCV.  I didn't realize a water-cooled motor got it too.
 
Is it from condesation?  Sitting?  Blow-by?
Title: 331 hemi
Post by: Anthony Prescott on October 07, 2010, 09:09:18 AM
i dont know if its condensation. its more than that. it drains the radiator in about ten minutes.
Title: 331 hemi
Post by: Steve on October 07, 2010, 02:04:10 PM
I think that's a dry intake like the bb's  so that's not it.
 
Cracked head, block, or just a simple head gasket.  I know you don't want to hear this, but as Herman said, be prepared.
 
If you plan on finishing the car, my reccomendation is yank it and send the block and heads out for a cleaning and magnaflux.
 
I had a 318 that was over heated that had a cracked cylinder that did the exact same thing.  The funny thing is, it was worse after I put the heads back on.  Didn't see the crack until the second round
Title: 331 hemi
Post by: Guests on October 07, 2010, 04:37:09 PM
If there is a radiator emptying in less than ten minutes, ou should be seeing in on the dipstick, as in waster filling the engine and raising the oil level. Gotta tear it apart and look for clues as you go, then magnaflux the whole thing, just like Steve said.
Title: 331 hemi
Post by: Anthony Prescott on October 08, 2010, 10:38:53 AM
will somebody explain to me what magnaflux means. ive never had to do that before.
Title: 331 hemi
Post by: Anthony Prescott on October 08, 2010, 10:57:41 AM
also, i need as much info on this motor that you guys can give. thanks. links are good too.
Title: 331 hemi
Post by: Steve on October 08, 2010, 11:52:16 AM
Quote from: moparmanof85
will somebody explain to me what magnaflux means. ive never had to do that before.

Magnaflux is an ultravilot compound applied to the iron, then wiped off.  Using a black light, you look at all the surfaces and look for cracks.  The compound will fall in the cracks and be real dark.  Very easy to see, vs the naked eye
Title: 331 hemi
Post by: Anthony Prescott on October 08, 2010, 12:10:27 PM
ok. thanks.
Title: 331 hemi
Post by: Steve on October 08, 2010, 03:08:07 PM
I'm leaving the 331 to the other guys. . .  Not a motor I am familiar with
Title: 331 hemi
Post by: Guests on October 08, 2010, 05:51:53 PM
Pretty desirable engine, one of the real ground pounder engines, takes a blower real well.
Try looking up hemiheads.com.
Title: 331 hemi
Post by: Brian on October 09, 2010, 12:02:49 AM

You want to learn about the early Hemis, 331, 354 and 392's.  Well here's a link to the Hemi Tech archive over on the HAMB.  You'll not find a bigger resource for early hemi info.

http://www.jalopyjournal.com/forum/showthread.php?t=118764&highlight=hemi+tech (http://www.jalopyjournal.com/forum/showthread.php?t=118764&highlight=hemi+tech)


As for the intake, the 1951-53 331 and 1954 354 hemi had a wet intake.  So there were water passages that crossed over from side to side through the intake.  Maybe you have a leak near the back cylinder head/intake seal?





thrashingcows2010-10-09 05:03:37
Title: 331 hemi
Post by: Anthony Prescott on October 09, 2010, 08:42:38 AM
thank you both. i´ll check the intake to find out.
Title: 331 hemi
Post by: Jason Goldsack on October 09, 2010, 04:46:18 PM
This is the intake you need that Hemi

(http://i154.photobucket.com/albums/s270/HemiTCoupe/Hemi/CopyofPC290009.jpg)


Title: 331 hemi
Post by: Anthony Prescott on October 09, 2010, 09:12:04 PM
where did you find that??? pretty neat.(http://www.moparfins.com/forum/smileys/smiley10.gif)
Title: 331 hemi
Post by: Brian on October 10, 2010, 07:52:01 PM

Quote from: 1965Windsor361
This is the intake you need that Hemi

(http://i154.photobucket.com/albums/s270/HemiTCoupe/Hemi/CopyofPC290009.jpg)


Looks like a Hilborn mechanical injection system on a 392.

Title: 331 hemi
Post by: Anthony Prescott on October 20, 2010, 11:06:37 PM
can i put hardened valve seats in the 331 to avoid adding a lead addative? if so, where can i buy these? and should i get new valves with them?(http://www.moparfins.com/forum/smileys/smiley32.gif)(http://www.moparfins.com/forum/smileys/smiley7.gif)
Title: 331 hemi
Post by: Snotty on October 21, 2010, 08:49:20 AM
Quote from: thrashingcows
  1954 354 hemi had a wet intake. 
 
I thought the 354 didn't arrive until '56?
 
I was just reading an article from a '59 Hot Rod magazine where a guy was talking about stroking a 331 to make it a 354.  I found that historically interesting.  Why stroke the former when you could just get the latter?  Kind of like doing a lot of work on a 318 when you can just get a 360.
 
(My Uncle from NC sent me a bunch of old car magazines - the histirical perspective is fun to read!)
Title: 331 hemi
Post by: Brian on October 21, 2010, 04:19:02 PM

Quote from: Snotty
Quote from: thrashingcows
  1954 354 hemi had a wet intake. 
 
I thought the 354 didn't arrive until '56?
 
I was just reading an article from a '59 Hot Rod magazine where a guy was talking about stroking a 331 to make it a 354.  I found that historically interesting.  Why stroke the former when you could just get the latter?  Kind of like doing a lot of work on a 318 when you can just get a 360.
 

Your right...my mistake.  The 354 was a late 55 and 56/57/58 motor.  The early 354's had a wet intake like the 331's, then they switched to the dry intake like the later 354/392.

As for stroking the 331 to make it a 354...well there was really no stroking involved.  Just a .125 over bore to bring the displacement to 354.  These old Hemi's are known for there generous cylinder wall thickness and many guys have bored them .125 or larger with no problems.