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Old 11-12-2018, 10:12 PM   #1
Lexelkus
 
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Default Failing manual trans, v6 1993

Hey all. Iíve been milking whatís left of my trans and Iím not sure how much longer I have. My question is whether I can rebuild it, and what I would need to replace other than a rebuild kit. I know my syncos are worn out, so i have not been using 2nd and 4th. Tried out 4th today and now it wonít even engage. Sometimes but not often when starting up a hill the truck doesnít want to go out of first. Jerks around and acts like itís going to stall, so I have to double clutch it and baby it embarrassingly. It always does that with a heavy load in 1st. It acts fine when flat or semi Hill. I live in the mountains. My clutch feels fine. Also, I have recently experienced it not wanting to come out of first when I start it up from cold, so I push forward on shifter and it comes out. Obviously shifting from 1st to third isnít good for a trans in the mtns....
so my question is, can I rebuild it back to normal or do I need to find a new/used trans?
Anyone live in Western North Caroline have one?
I have no idea what shipping would be but probably out of my budget.
Thanks, Ryan.
My truck is a 93 Nissan D21 4x4 5 speed manual V6
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Old 11-12-2018, 10:43 PM   #2
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It's not to bad of a job, just depends on your skill level, your budget and how fast you need the truck to be driveable.

I rebuilt mine but did it slowly over several months time. I have other vehicles so I only worked on it when I really felt like it. You'll need a press, a variety of bearing pullers/separators, a good set of snap ring pliers and your usual set of metric tools.

I bought a kit that had all the bearings and synchros in it. I heated a number of spacers/collars in my oven and that enabled them to slide right on the various shafts rather than press them on.

The gear end play gave me fits and I finally got it right on the third try. There's a chapter in the FSM on rebuilding a FS5R30A which is what you have. Beer garage also has a writeup, Google that and you'll see what's available there. I used heavy duty rubber bands to help hold some of the subassemblies together. They're still in the transmission.

I swear the worst part was getting everything clean so reassembly could take place, I hate cleaning parts. Bag & tag everything and take LOTS of pictures and notes. I was glad I tried it and was successful, transmission shifts perfectly. If I ever have to do it again, I'll pay someone.

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Old 11-13-2018, 09:32 AM   #3
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I switched fluids from regular GL-4 to Redline MT90 GL-4, and my transmission shifted a lot better!

Still, when I had extra cash one day (company profit sharing bonus), I took the truck to the local AAMCO guy and had him rebuild it (because I plan to keep the truck forever). It was expensive! like, around $1500, if I remember correctly.

If you are not in a hurry, these transmissions show up for sale here or on Facebook Groups (like this one https://www.facebook.com/groups/D21Classifieds/) from time to time. Here is one that was posted a while back, has no comments on it, and may still be available:

https://www.facebook.com/groups/D21C...05866492957908
Dover, PA, $200

That's an 8 hour drive for you, but a deal if you can't find one locally or don't want to spend the money for a rebuild.
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Old 11-13-2018, 05:39 PM   #4
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That’s a great find JP. I need that unit so bad, wonder what shipping would cost
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Old 11-13-2018, 06:33 PM   #5
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I had AAMCO replace mine. The remanufactured trans was around $800 and I think labor was about the same. I must have lost the records from that. I know it was done in 2012 but I can't find the receipt.


IMO unless you want to spend months DIYing it, it'd be worth just paying someone.
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Old 11-14-2018, 12:13 AM   #6
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Quote:
Originally Posted by Hardbody92 View Post
Thatís a great find JP. I need that unit so bad, wonder what shipping would cost
You could ask him, but he's probably going to put it on you to find a shipper.

I used to know a site you could request freight shipping quotes from. I used it to get a welding machine shipped to me. I think it was an eBay feature.
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Old 11-14-2018, 01:19 AM   #7
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Google shippers and give one a call. I did this last year as I was going to ship my tranny away for a rebuild. Had to postpone til next year They will give you quotes. Dock shipping is less expensive for obvious reasons.
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Old 11-14-2018, 07:32 AM   #8
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Unless you know what you are doing, don't try to rebuild it. Find another one and just put it in the truck with a new clutch setup. Keep hitting your local Craigslist for part outs, etc. Ninety percent of the time the reason someone is parting out a rig is because the engine is bad, or it's been wrecked...not the manual trans. The question you should be asking is what range of years on the truck do the manual transmissions interchange. This will narrow your search.
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Old 11-14-2018, 01:25 PM   #9
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Quote:
Originally Posted by XoXSciFiGuy View Post
Ninety percent of the time the reason someone is parting out a rig is because the engine is bad, or it's been wrecked...not the manual trans.

Maybe I've got bad luck but so far I'm 2 for 2 on buying 80s things with perfectly good engines but dickered transmissions, lol.
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Old 11-15-2018, 04:50 AM   #10
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It makes me think your transmission has been abused for the entire life span. The transmissions Nissan used for the d21 are damn near indestructible. They easily see 350k miles of service. Try looking at www.car-part.com
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