Terrano / Pathfinder D21 gearbox
Terrano / Pathfinder D21 gearbox
Hi folks. I'm needing to sort out the manual gearbox in a 1991 Terrano D21 with the TD27 motor which has worn bearings. I have a good box here but it's out of a Terrano with the V6 petrol engine. I know the bell-housing is different where it bolts to the motor. Question is: Will the box from the V6 terrano bolt up to the TD27 if I swap over the bell housings? Will the bell-housing from the worn TD27 box fit to the front of the V6 box? Anyone here tried this? Thanks.
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Hawairish
- Posts: 463
- Joined: Sat Nov 08, 2014 1:43 pm
- Car: 2004 Nissan Pathfinder SE 4WD
- Location: Surprise, AZ
Re: Terrano / Pathfinder D21 gearbox
Doubt anyone here has tried it, since the diesel wasn't available to us here. Hard to know what compatibility is possible without some degree of specs, normally provided by the FSM. Just knowing the transmission code alone would immediately answer that question.
However, from a cursory search of Google and some Nissan part numbers (http://nissan-europe.epc-data.com/terrano/wd21/), nothing suggests they'll be compatible. It seems that TD27 has more in common, transmission/bellhousing-wise, to the Z24 and KA24 engine families. One particular post I read (sorry, didn't get the URL) suggested that the AT boxes shared at least transmission code, but you're looking for MT compatibility. (You didn't indicate 2wd or 4wd, though).
You may want to try the PCoA forums (http://www.pcoa.org.au/forum/index.php) if you haven't already; I don't know if they've got much knowledge about the WD21s, but being an Aussie forum, they'll have better exposure to the TD27. There's some limited info at NPORA (http://www.nissanpathfinders.net/forum/), but for the same reason here, they're mostly North American-based. There are some topics about the TD27 that may be of use, though.
In your scenario, is it possible to get measurements for simple elimination's sake? Like, are the gearboxes (without bellhousing) even the same length? Same output shaft? Same tranmission mount? Same shifter position? Are they even visually the same? If they're from the same transmission family, the similarities should be pretty obvious.
Good luck!
However, from a cursory search of Google and some Nissan part numbers (http://nissan-europe.epc-data.com/terrano/wd21/), nothing suggests they'll be compatible. It seems that TD27 has more in common, transmission/bellhousing-wise, to the Z24 and KA24 engine families. One particular post I read (sorry, didn't get the URL) suggested that the AT boxes shared at least transmission code, but you're looking for MT compatibility. (You didn't indicate 2wd or 4wd, though).
You may want to try the PCoA forums (http://www.pcoa.org.au/forum/index.php) if you haven't already; I don't know if they've got much knowledge about the WD21s, but being an Aussie forum, they'll have better exposure to the TD27. There's some limited info at NPORA (http://www.nissanpathfinders.net/forum/), but for the same reason here, they're mostly North American-based. There are some topics about the TD27 that may be of use, though.
In your scenario, is it possible to get measurements for simple elimination's sake? Like, are the gearboxes (without bellhousing) even the same length? Same output shaft? Same tranmission mount? Same shifter position? Are they even visually the same? If they're from the same transmission family, the similarities should be pretty obvious.
Good luck!
Re: Terrano / Pathfinder D21 gearbox
Thanks for that. Yeah, the sensible thing to do was to crawl underneath with a tape measure and compare the basic dimensions. Turns out the bellhousing from the petrol V6 is 40mm longer, which means the input shaft will also be longer, so unlikely to work. Back to the drawing board - will keep looking for a replacement TD27 box. Cheers for the advice!