4 speed needed

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SPLutah
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Model: 1500/1600
Year: High Windshield-68-70

4 speed needed

Post by SPLutah »

It turns out that the countershaft on the trans that came with my 68 spl311 is toast and I need another. Does anyone out there have a spare countershaft or transmission they are willing to part with. Need shipped to 84043 or if local(ish) can pick up.

Thanks!
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1968 Datsun Roadster 1600 - 1.6L - 4 speed manual
Various other boring cars (2002 VW Jetta TDI, F-150, Explorer)
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dads311
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Re: 4 speed needed

Post by dads311 »

I've got a couple of them. One unknown condition and the other has a 2nd gear synchro going out. Shipping from 83617 would be about $90. If you are ever in the Boise area I'm not far from there.
Mike
rebuilt dads 67.5 1600
1952 GMC 302ci 6cyl w/cam and 3 deuces
1965 Mustang (Wife's)
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Kkr
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Re: 4 speed needed

Post by Kkr »

I have one that came with a basket case project car. Previous owner claimed it was rebuilt and never installed but I don't know how to verify. The car came with lots of new parts in Nissan packaging so I tend to believe it was in process of full restoration...15 plus years ago. Case is clean. I don't know value. PM me an offer if interested.
JT68
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Re: 4 speed needed

Post by JT68 »

keep in mind there are 3 versions (that I know of) so be careful so you don't wind up with a mix of non compatible stuff..
LT/JT
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SPLutah
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Re: 4 speed needed

Post by SPLutah »

JT - thank you. That is good to know. Can you elaborate on the differences? Are you of the opinion that it is best to just stick with a full transmission rather than replacing the countershaft?
1968 Datsun Roadster 1600 - 1.6L - 4 speed manual
Various other boring cars (2002 VW Jetta TDI, F-150, Explorer)
JT68
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Re: 4 speed needed

Post by JT68 »

Well its hard to say.. When the counter shaft is wasted there is typically some wear on other parts, but that totally just depends on the history. If it has enough miles on it to kill the countershaft, 1st&2nd gear synchros are probably tired at a minimum. Often a tired bearing or two.

If you buy a "as-is" trans, there is a very good chance the same parts will be worn out and it won't be much help. The only way to know is disassembly and/or test run.

I thought of a 4th variant, So late to early:

Metric Warner w/large (rollpin) countershaft
Late Metric steel synchro w/large (rollpin) countershaft
Early Metric steel synchro w/small (notched) countershaft
SAE steel synchro w/small (notched) countershaft

Some (many) of the parts are interchangeable between the variants, other critical parts will not interchange.

Definitely simpler if you can find a "known good" trans and just swap it in. Rebuilds get expensive quickly, but are usually the most certain path to success.

Give Mike Young a call, he may have a known good 4-speed on hand or even a rebuild.
LT/JT
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70MTRoadster
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Re: 4 speed needed

Post by 70MTRoadster »

I have a known good 4 speed that I took out of my 70 when swapping in a 5 speed.
1968 510 Wagon
1970 Roadster 1600/U20/5 sp. swap
1972 510 4 dr. vg30e/5 sp. ricky racer
1971 510 shell behind the shop, r.i.p.

I drive a Roadster or 510 almost every day!
JT68
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Re: 4 speed needed

Post by JT68 »

70MTRoadster wrote: Wed Apr 28, 2021 9:14 am I have a known good 4 speed that I took out of my 70 when swapping in a 5 speed.
If that is a warner box, it is definitely worth picking up :smt023
LT/JT
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DAC21
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Re: 4 speed needed

Post by DAC21 »

JT68 wrote: Wed Apr 28, 2021 1:40 pm
70MTRoadster wrote: Wed Apr 28, 2021 9:14 am I have a known good 4 speed that I took out of my 70 when swapping in a 5 speed.
If that is a warner box, it is definitely worth picking up :smt023
JT, how do you tell the difference? Thanks
1967 1600 in waiting SPL311-09002
2018 Hyundai Elantra GT Sport Ultimate
JT68
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Re: 4 speed needed

Post by JT68 »

If you know what to look for, you can see through the filler plug. if not, remove the pan and post a photo here. we can tell you. The photo at the top is servo synchro, not warner.
LT/JT
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SPLutah
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Re: 4 speed needed

Post by SPLutah »

70mt - do you feel like removing the pan? JT - will the warner work with my 68 chassis?
1968 Datsun Roadster 1600 - 1.6L - 4 speed manual
Various other boring cars (2002 VW Jetta TDI, F-150, Explorer)
JT68
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Re: 4 speed needed

Post by JT68 »

SPLutah wrote: Thu Apr 29, 2021 2:33 am 70mt - do you feel like removing the pan? JT - will the warner work with my 68 chassis?
Yes
LT/JT
Datsunrestorationproducts.com
Only the very BEST parts for your Datsun- 1000's of items in stock
DAC21
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Posts: 317
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Re: 4 speed needed

Post by DAC21 »

JT68 wrote: Wed Apr 28, 2021 7:17 am Well its hard to say.. When the counter shaft is wasted there is typically some wear on other parts, but that totally just depends on the history. If it has enough miles on it to kill the countershaft, 1st&2nd gear synchros are probably tired at a minimum. Often a tired bearing or two.

If you buy a "as-is" trans, there is a very good chance the same parts will be worn out and it won't be much help. The only way to know is disassembly and/or test run.

I thought of a 4th variant, So late to early:

Metric Warner w/large (rollpin) countershaft
Late Metric steel synchro w/large (rollpin) countershaft
Early Metric steel synchro w/small (notched) countershaft
SAE steel synchro w/small (notched) countershaft

Some (many) of the parts are interchangeable between the variants, other critical parts will not interchange.

Definitely simpler if you can find a "known good" trans and just swap it in. Rebuilds get expensive quickly, but are usually the most certain path to success.

Give Mike Young a call, he may have a known good 4-speed on hand or even a rebuild.
So it is a forgone conclusion that an early 1967 SAE car (with the orig tranny) has a Servo?
1967 1600 in waiting SPL311-09002
2018 Hyundai Elantra GT Sport Ultimate
70MTRoadster
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Year: High Windshield-68-70

Re: 4 speed needed

Post by 70MTRoadster »

OK, just logged on and saw the pan deal from SPLutah. Yeah, I can pull the pan I suppose. I'll try and post a pic tomorrow, Friday.
1968 510 Wagon
1970 Roadster 1600/U20/5 sp. swap
1972 510 4 dr. vg30e/5 sp. ricky racer
1971 510 shell behind the shop, r.i.p.

I drive a Roadster or 510 almost every day!
JT68
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Posts: 2371
Joined: Sun Jan 27, 2013 9:43 am
Location: Cumming, GA

Re: 4 speed needed

Post by JT68 »

[/quote]

So it is a forgone conclusion that an early 1967 SAE car (with the orig tranny) has a Servo?
[/quote]

Yes, unless the trans was swapped, a 67 would be syncro. An SAE 4-speed is syncro.
LT/JT
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