nissan5 speed to NP231??? possible - Pirate4x4.Com : 4x4 and Off-Road Forum

cybersniper · 02-17-2004, 02:33 PM

Has anybody matted a NIssan 5 speed and a NP231???

I have a Rover V8 engine that need to matt to a NP231 with a 5 speed in between.
We have already used the strong NISSAN 5 speed in a CHEVY 6.5 diesel application and has demosntrated it´s strength. ...
We want to use the same unit in a YJ...

Any ideas???
Eduardo

D-RAT · 02-18-2004, 11:42 AM

Would need one helluva adapter plate. Nissan tranny's and cases are married, and the tail housing is huge. Plus, you'd need to adapt the shaft.

Why not stick with a Nissan case with Calmini gears? Kinda pricey, but it's bombproof.

fivetenben · 02-18-2004, 09:48 PM

The adapter plate wouldnt be that hard, Id worry more about the shaftwork. the 23 spline input of the np231 is 1.22" OD, 23 spline. I think theres a 21 spline version also. the nissan output isnt big enough at the splines to be resplined. Doesnt make it impossible, but sure makes it harder. Is there a problem with a rover 5spd?

Ben

McSoo · 02-19-2004, 03:47 PM

Is the NP231 a male input? If so, just make a coupler for the two, and a nice big plate to fit between the two pieces and I'll bet it would work well.

fivetenben · 02-19-2004, 07:35 PM

nope, the 231 has a female input.

McSoo · 02-19-2004, 08:22 PM

That makes it a little harder. What about welding an output shaft from something that bolts to a 231 to a coupler that will go onto the Nissan output?

fivetenben · 02-19-2004, 11:45 PM

From what Ive read, It seems like welded shafts do pretty good, but not great. Just thinking out loud, but I bet you could have a short shaft built with male nissan splines on one end and the male 23 spline on the other end. But make the nissan splines a healthy press fit into a nissan slip yoke with the yoke cut off. Then pin the two together so they cant work apart over time. Moser and others will cut outside splines pretty cheap, so this wouldnt be that expensive, but a little cobbled together.

Ben

cybersniper · 02-22-2004, 10:37 AM

Maybe it is too damm difficult.....
I love that NIssan five speed because it has prooved unbreakable in one of our rigs......
Eduardo

cybersniper · 03-02-2004, 05:08 PM

We have adapted the NISSAN to a Chevy 6,5 diesel before and the bellhousing can be done by welding aluminium pieces together.

The problem is the output of the NISSAN and the NP231 input...

Maybe we could fit a KLUNE in the middle??

Eduardo

jimk403 · 03-02-2004, 09:10 PM

The earlier Nissan's(720 I think), used a divorced t-case. Then you could use any case you want if you made an input for it.

SirMrManGuy · 03-03-2004, 12:28 AM

Quote:

Originally posted by cybersniper
We have adapted the NISSAN to a Chevy 6,5 diesel before and the bellhousing can be done by welding aluminium pieces together.

The problem is the output of the NISSAN and the NP231 input...

Maybe we could fit a KLUNE in the middle??

Eduardo

Do it and let us know how it turned out.

This is a GU patrol 5speed right?

Patrol · 03-08-2004, 07:26 AM

The best way would be to get a shop taking the old shaft(s) from the 5-Spd and the original tranny mated to the 231 and let them fab a completely new shaft.
Which Nissan tranny is it you want to mate to the V8 ? We're destroying the 2.8's Patrol trannies like nothing here behind a stock RD28T.

Moab Austin · 03-10-2004, 05:48 PM

does calmini make gears for a chain drive case?

or IS the case in a 95 truck chain drive?

TRed · 03-10-2004, 06:18 PM

I have the t case gears and they are in my '99. And yes, there is a chain.

Ghostdog · 03-23-2004, 04:34 PM

Sorry... not tryin to high jack the thread but I had pretty much the same questions.

I am looking at converting a late 80's jeep cherokee over to a diesel. I have access to a nissan LD28. I was told they bolt dirrect to any of the early Z car transmissions. This one came from a maxima. But I'd like to keep the NP231. I know the NV231 is the same tcase with a different inputshaft. They are the same tcase. And I could use an NP205 which is a divorced tcase. But I would rather like to try and come up with some other solution. Anyway I wanted to add some info as well as ask for help. thanks

fivetenben · 03-24-2004, 09:21 AM

Some V6 zxs came with a T5 behind them. Im not sure about the inline 6s. Id check to see what tranny came in the 1983 280zx turbo. If it happens to be a T5, you might be able to mix and match tranny parts with a jeep T5.

Ghostdog · 03-24-2004, 09:38 AM

coool... this is good news then... well so far.... i will check into the differences.... i hope this works....

02-17-2004, 02:33 PM	#1 (permalink)
cybersniper Granite Guru Join Date: Apr 2003 Member # 18822 Location: Mesquite NV & torrelodones SPAIN Posts: 555	nissan5 speed to NP231??? possible Has anybody matted a NIssan 5 speed and a NP231??? I have a Rover V8 engine that need to matt to a NP231 with a 5 speed in between. We have already used the strong NISSAN 5 speed in a CHEVY 6.5 diesel application and has demosntrated it´s strength. ... We want to use the same unit in a YJ... Any ideas??? Eduardo __________________ 91´YJ:Rover 4.2V8+TF727+NP231+crawler box/ XCL coilover 4-link/ 4.88+ARB/D30-superiorCrMo-F8.8/ 2xSAFARI/ 37" COOPER SST/9x17 W.Evans beadlocks/ COMM+NAV/ H2O proof electrics. 07´ JK 2.8CRD: 3" OME springs/ ProFender 2.5 adj rem-res/AEV snorkel Daily driver/280/75-17 COOPER STTMAXX

02-18-2004, 11:42 AM	#2 (permalink)
D-RAT Registered User Join Date: Mar 2003 Member # 17554 Location: Mesa, AZ Posts: 181	Would need one helluva adapter plate. Nissan tranny's and cases are married, and the tail housing is huge. Plus, you'd need to adapt the shaft. Why not stick with a Nissan case with Calmini gears? Kinda pricey, but it's bombproof. __________________ 1998 Nissan Frontier - The Other White Meat www.nissan4wheelers.com

02-18-2004, 09:48 PM	#3 (permalink)
fivetenben Registered User Join Date: Sep 2000 Member # 1710 Location: paradise, ca Posts: 473	The adapter plate wouldnt be that hard, Id worry more about the shaftwork. the 23 spline input of the np231 is 1.22" OD, 23 spline. I think theres a 21 spline version also. the nissan output isnt big enough at the splines to be resplined. Doesnt make it impossible, but sure makes it harder. Is there a problem with a rover 5spd? Ben Last edited by fivetenben; 02-18-2004 at 09:50 PM.

02-19-2004, 03:47 PM	#4 (permalink)
McSoo Registered User Join Date: Dec 2001 Member # 8822 Location: Chandler, AZ 85225 Posts: 1,117	Is the NP231 a male input? If so, just make a coupler for the two, and a nice big plate to fit between the two pieces and I'll bet it would work well. __________________ [b]"Just flail around a bit and drive up.[/b] Rollin' deep in the 24 karat krawler.

02-19-2004, 08:22 PM	#6 (permalink)
McSoo Registered User Join Date: Dec 2001 Member # 8822 Location: Chandler, AZ 85225 Posts: 1,117	That makes it a little harder. What about welding an output shaft from something that bolts to a 231 to a coupler that will go onto the Nissan output? __________________ [b]"Just flail around a bit and drive up.[/b] Rollin' deep in the 24 karat krawler.

02-19-2004, 07:35 PM	#5 (permalink)
fivetenben Registered User Join Date: Sep 2000 Member # 1710 Location: paradise, ca Posts: 473	nope, the 231 has a female input.

02-19-2004, 11:45 PM	#7 (permalink)
fivetenben Registered User Join Date: Sep 2000 Member # 1710 Location: paradise, ca Posts: 473	From what Ive read, It seems like welded shafts do pretty good, but not great. Just thinking out loud, but I bet you could have a short shaft built with male nissan splines on one end and the male 23 spline on the other end. But make the nissan splines a healthy press fit into a nissan slip yoke with the yoke cut off. Then pin the two together so they cant work apart over time. Moser and others will cut outside splines pretty cheap, so this wouldnt be that expensive, but a little cobbled together. Ben

02-22-2004, 10:37 AM	#8 (permalink)
cybersniper Granite Guru Join Date: Apr 2003 Member # 18822 Location: Mesquite NV & torrelodones SPAIN Posts: 555	Thanks Maybe it is too damm difficult..... I love that NIssan five speed because it has prooved unbreakable in one of our rigs...... Eduardo __________________ 91´YJ:Rover 4.2V8+TF727+NP231+crawler box/ XCL coilover 4-link/ 4.88+ARB/D30-superiorCrMo-F8.8/ 2xSAFARI/ 37" COOPER SST/9x17 W.Evans beadlocks/ COMM+NAV/ H2O proof electrics. 07´ JK 2.8CRD: 3" OME springs/ ProFender 2.5 adj rem-res/AEV snorkel Daily driver/280/75-17 COOPER STTMAXX

03-02-2004, 05:08 PM	#9 (permalink)
cybersniper Granite Guru Join Date: Apr 2003 Member # 18822 Location: Mesquite NV & torrelodones SPAIN Posts: 555	We are researching some more.... We have adapted the NISSAN to a Chevy 6,5 diesel before and the bellhousing can be done by welding aluminium pieces together. The problem is the output of the NISSAN and the NP231 input... Maybe we could fit a KLUNE in the middle?? Eduardo __________________ 91´YJ:Rover 4.2V8+TF727+NP231+crawler box/ XCL coilover 4-link/ 4.88+ARB/D30-superiorCrMo-F8.8/ 2xSAFARI/ 37" COOPER SST/9x17 W.Evans beadlocks/ COMM+NAV/ H2O proof electrics. 07´ JK 2.8CRD: 3" OME springs/ ProFender 2.5 adj rem-res/AEV snorkel Daily driver/280/75-17 COOPER STTMAXX

03-02-2004, 09:10 PM	#10 (permalink)
jimk403 Registered User Join Date: Dec 2003 Member # 25528 Location: San Diego Posts: 37	random ideas The earlier Nissan's(720 I think), used a divorced t-case. Then you could use any case you want if you made an input for it.

03-08-2004, 07:26 AM	#12 (permalink)
Patrol Registered User Join Date: Jul 2002 Member # 12714 Location: Germany Posts: 440	The best way would be to get a shop taking the old shaft(s) from the 5-Spd and the original tranny mated to the 231 and let them fab a completely new shaft. Which Nissan tranny is it you want to mate to the V8 ? We're destroying the 2.8's Patrol trannies like nothing here behind a stock RD28T. __________________ I struggled with shut the fuck up, you clueless newb but opted for nice since I was in a good mood

03-10-2004, 05:48 PM	#13 (permalink)
Moab Austin Registered User Join Date: Feb 2001 Member # 3475 Location: Moab UT U.S.A Posts: 3,008	does calmini make gears for a chain drive case? or IS the case in a 95 truck chain drive? __________________ pm REELMOAB.COM

03-10-2004, 06:18 PM	#14 (permalink)
TRed Registered User Join Date: Jun 2002 Member # 12100 Location: Priskitt AZ Posts: 1,168	I have the t case gears and they are in my '99. And yes, there is a chain. __________________ Quote: Originally Posted by randii if you're a Pickle, rolling down the trail in a Smurf, dispensing bowls of dicks. FWIW, I don't want to see pictures of that, either! Randii Last edited by TRed; 03-10-2004 at 06:27 PM.

03-23-2004, 04:34 PM	#15 (permalink)
Ghostdog Registered User Join Date: Dec 2002 Member # 15334 Location: PNW Posts: 89	Sorry... not tryin to high jack the thread but I had pretty much the same questions. I am looking at converting a late 80's jeep cherokee over to a diesel. I have access to a nissan LD28. I was told they bolt dirrect to any of the early Z car transmissions. This one came from a maxima. But I'd like to keep the NP231. I know the NV231 is the same tcase with a different inputshaft. They are the same tcase. And I could use an NP205 which is a divorced tcase. But I would rather like to try and come up with some other solution. Anyway I wanted to add some info as well as ask for help. thanks __________________ "All I wanted was a Pepsi, and she wouldn't give it to me!"

03-24-2004, 09:21 AM	#16 (permalink)
fivetenben Registered User Join Date: Sep 2000 Member # 1710 Location: paradise, ca Posts: 473	Some V6 zxs came with a T5 behind them. Im not sure about the inline 6s. Id check to see what tranny came in the 1983 280zx turbo. If it happens to be a T5, you might be able to mix and match tranny parts with a jeep T5.

03-24-2004, 09:38 AM	#17 (permalink)
Ghostdog Registered User Join Date: Dec 2002 Member # 15334 Location: PNW Posts: 89	coool... this is good news then... well so far.... i will check into the differences.... i hope this works.... __________________ "All I wanted was a Pepsi, and she wouldn't give it to me!"

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