Projects
North West Datsun Enthusiasts Forum : Member Rides : Projects
Topic: Head Gasket & L4N71B
Author Message
BADPENNY
Enthusiast
Enthusiast
Avatar

Joined: 17 February 2005
Location: United States
Posts: 406
bullet Topic: Head Gasket & L4N71B
    Posted: 05 April 2006 at 1:32pm

OK, so the trucks L20B head gasket decided to start pissin a stream of water under #4 plug.  Upon concideration, instead of a quick swap and make the Golden Gardens BBQ, I decided to tear off the head, clean up the engine bay, and get everything painted pretty.  (Yea, truck guys are still hunting me down)

Then the next week  asavage answers my thread for an L4N71B that should be in an 83 Maxima posted on craigslist for $100.  He's intrested in the alloy wheels, Im intrested in the tranny...

So last saturday we get together with his friend, who was a pleasure to be of aquiantance, I head under the car to pull the tranny, and when I finally come up this is what I find!!!!

And the poor PO still needs to be the one to haul it out of her driveway!!  (She was just happy to get the $100)  So I throw my spare L3N71B in the trunk, (maybe should have given it to that guy on craigslist so he can then post two L3N71B's for $45 each) and stand back and admire my new 3 speed with OD baby!!

And with all the replacement wheels we raked up she's at least not sittin on her rotors.  (If they wree left!)  Say bye bye to that straggling rim Bleach (THANX!)

So I will use this thread to post an L3N71B to a L4N71B Automatic tranny swap into a 620 PU as it goes along.  Hey odmanjohnson,,, ended up gettin everything needed for under $50!!!!   Thanx Al!!

 

77Westy,427Cobra,FenderAxe,
77KingCabDeluxe620,89Wrangler,00BMWZ32.3
IP IP Logged
Bleach
Guru
Guru
Avatar

Joined: 04 December 2002
Location: United States
Posts: 4806
bullet Posted: 05 April 2006 at 1:41pm

That's a nice house those neighbors have... I wonder how long it will be before that stripped out car is out of the driveway.  

goodbye aftermarket wheel.

IP IP Logged
BADPENNY
Enthusiast
Enthusiast
Avatar

Joined: 17 February 2005
Location: United States
Posts: 406
bullet Posted: 05 April 2006 at 2:17pm
Already GONE!!!!  Believe it or not,,, asavage asked me to swing by and pick up MORE parts off of it,,, but,,, she wasnt there anymore.  The neighbor had a decent looking 78 Toyota PU, well lifted, straight, all crome and hardware off of the body.  Looked like it was headin for the paint shop.
77Westy,427Cobra,FenderAxe,
77KingCabDeluxe620,89Wrangler,00BMWZ32.3
IP IP Logged
asavage
Enthusiast
Enthusiast
Avatar

Joined: 20 December 2002
Location: United States
Posts: 159
bullet Posted: 05 April 2006 at 11:40pm
Originally posted by BADPENNY

So I will use this thread to post an L3N71B to a L4N71B Automatic tranny swap into a 620 PU as it goes along.


Dale, are you sure you've got an L3N71B in your 620? AFAIK, the lockup torque converter wasn't available until . . . 1982, the year before the OD was added. Or did someone already do a 3-spd-with-lockup swap on your truck?
Regards,
Al S.          Port Townsend, Wash.
NissanDiesel for SD2x LD28s
IP IP Logged
asavage
Enthusiast
Enthusiast
Avatar

Joined: 20 December 2002
Location: United States
Posts: 159
bullet Posted: 06 April 2006 at 12:13am
The alloys cleaned up nicely.



No center caps though (still available from Nissan @ $19 ea!). The two Goodrich tires look OK, the two Michelins are worn out on the inside and one has a massive bead leak, so they'll get swapped out.

Dale, when you get your trans out of the truck, would you borrow a real camera and take a side-by-side? Something like this:




If time permits, I'd come out to your place to take a few pics. I've got a L4N71B out on the floor here, but no L3N71B out for comparison (don't say it!).
Regards,
Al S.          Port Townsend, Wash.
NissanDiesel for SD2x LD28s
IP IP Logged
BADPENNY
Enthusiast
Enthusiast
Avatar

Joined: 17 February 2005
Location: United States
Posts: 406
bullet Posted: 06 April 2006 at 9:42am
Yea, I can do that Al.  But now that you pose the question, it may be an L4N71B next to a 3N71B !!!   Don't know for sure whats in the truck yet.  Hopefully find out this weekend, provided the wife doesnt make me take TOO long of a road trip.  I believe its the stock tranny though.  Hey, wheels did clean up real nice!  Hope it was worth yr trip.
77Westy,427Cobra,FenderAxe,
77KingCabDeluxe620,89Wrangler,00BMWZ32.3
IP IP Logged
asavage
Enthusiast
Enthusiast
Avatar

Joined: 20 December 2002
Location: United States
Posts: 159
bullet Posted: 06 April 2006 at 10:02am
TTBOMK, the 3N71B & L3N71B externally look the same. I assume that this casting number would be different though:
Regards,
Al S.          Port Townsend, Wash.
NissanDiesel for SD2x LD28s
IP IP Logged
]2eDeYe
Expert
Expert
Avatar

Joined: 18 May 2005
Posts: 1116
bullet Posted: 06 April 2006 at 2:02pm
asavage, What did you use to clean up those rims?
dos datsuns
IP IP Logged
asavage
Enthusiast
Enthusiast
Avatar

Joined: 20 December 2002
Location: United States
Posts: 159
bullet Posted: 06 April 2006 at 11:58pm
1) Car wash. I've done enough wheels there to be able to keep most of the soap off of me now ;). That took off the majority of the moss.

2) Castrol SuperClean ($9/Gal)

in a utility spray bottle

and a stiff nylon parts cleaning brush


The SuperClean is primarily sodium hydroxide (lye) and is very caustic, so it can't be used on warm aluminum, and you have to use care with cold aluminum alloys or it will etch. However, it does work very well. I won't use it without the latex gloves, it'll eat your skin -- well, it eats mine anyway, but I have rather sensitive hands -- hey, I'm a sensitive man!

I've used JobMaster, Simple Green, and a bunch of others, but the SuperClean is the best bang for the buck. Good ventilation is helpful. At work, I clean small parts in the bathroom sink, and the fumes are pretty heady. And small drops of the stuff that the parts brush flings on your bare skin (face and arms for me) will start to burn, just like battery acid. You have to wash it off failry quickly. Unlike battery acid, it hasn't damaged any clothing of mine.
Regards,
Al S.          Port Townsend, Wash.
NissanDiesel for SD2x LD28s
IP IP Logged