Where to get ring and pinion

[78savage]

Where can you buy new R&P for the H190? I have searched some suppliers and I can not find the gears that I want. They have to be around a 3.40, and Im not sure if they are available.. I would like to find out before I go and build a 9", and spend too much.

 

Thanks, Darren

[yello620]

3.70 gears are the lowest numerical #

gear that i have heard of for a H190.

 

Jason

[banzai510(hainz)]

find a Nissanmotorsport book and get the part #s and go to nissanparts.cc and enter them

 

if motorsport part eneter M- then the part #

[datsunaholic]

H190s came in gear ratios from 3.700-5.429.

 

3.700

3.889 (known as the 3.90)

4.111

4.375

4.625

4.875 (known as the 4.88)

5.142

5.429

 

Last 2 were NISMO only units.

[Dime Dave]

Hate to bring this one back up but the H190 axle in the '83 200SX uses a 3.54 gear, in a cast iron center section, don't know if that helps.

 

I have an open diff one in the barn that I'd part with for $75 if you are interested. Splines match the truck not the roadster/510 wagon.

 

Dave Patten

Dunbarton, NH

dwpatten@gsinet.net

[datzenmike]

I think the '83 200sx uses an H-165-B 3.70 solid axle.

 

The lowest H-190 I know of is in the '84-'86 720 with mileage option Z20 engine with a ratio of 3.364. Which is close to 3.40

Edited November 11, 2008 by datzenmike

[Dime Dave]

Mike,

I didn't know the 720 had such a tall gear, 3.364 would be a good Bonneville gear. With some digging I found hat ratio was also in the Maxima diesel from 7/80 to 6/82.

 

The last of the 200SX solid axle cars had a H190 rear, 7/81 to the end. 6/81 and earlier had the H165.

 

H190 has 10 bolts holding the carrier to the housing, the H165 has 8 bolts.

[datzenmike]

Dave I love this site. Always something to learn. Thanks for that info.

 

The mileage option 720 used a Z20(S) engine with 9.4 compression featuring an electronic detonation control system that adjusts timing in response to signals from a knock sensor in the head. This is an odd duck motor rear end combination that never really was accepted by the public. Likely because of it's lazy performance.

Edited November 12, 2008 by datzenmike

[RacnJsn95]

With some digging I found hat ratio was also in the Maxima diesel from 7/80 to 6/82.

 

You must be talking about the Maxima Diesel wagon, eh? My Maxima sedan has IRS.

 

Didn't the 78+ 510 wagon have an H190?

[Duncan]

Check this site. I've bought a couple of NOS R&P's from them and the price has been great both times.

 

http://www.oem-surplus.com/nwp/index.htm

 

I just checked and they have the 3.545 r&p in stock.

 

8211 8306 720 Truck : 2WD. (T+K/CAB). Z24

8107 83 200SX : Z22E.MT

8007 84 Maxima : W.L24E.MT.F5

: 39/11 = 3.545 H190

 

You need to CALL them for a price. I've bought two NOS units from them, and the price has been $125.00 or so both times.

Edited November 13, 2008 by Duncan

[datsunaholic]

 

Didn't the 78+ 510 wagon have an H190?

 

No, the '78-81 510 (all versions, not just the wagon) had a H165. Only difference between the wagons and the sedan/HB was the Sedan/HB had 4-link coil spring suspension and the wagon used leaf springs.

[athoose]

A few questions

 

What models have an H190a-ml 12mm ring gear that is higher (numerically) than 3.73?

 

Is the H190b ring gear interchangeable with the H190a?

 

Thanks!

[datzenmike]

Good question.. I don't know. Wouldn't it be easier to just pull the 'bum' (or third member) out and just swap it as a unit?

 

Here's an H-190-AL:

http://i138.photobucket.com/albums/q251/datzenmike/rearendNissanH190aluminumcarrierLSD.jpg[/img]"]

 

(I think that's an LSD so this may be from a Roadster)

[Bugeye]

(I think that's an LSD so this may be from a Roadster)

 

that would be an lsd, notice the clutch discs

[athoose]

Good question.. I don't know. Wouldn't it be easier to just pull the 'bum' (or third member) out and just swap it as a unit?

 

I am looking at installing an LSD, so I will be breaking it down. But any info on the differences between the 190a and b would be useful.

[Dime Dave]

For some good Nissan LSD info go to this site:

http://www.gordon-glasgow.org/lsdtech.html

 

From the information there 4:11/4.375 is the breakpoint between the A/B differentials. I do not have a copy of my Nissan Comp catalog handy to verify which is the A or B.

 

The difference between the A and B LSD's is the position of the ring gear flange. The one for the 4.375 is closer to the pinion gear and will only work with the 4.375 and higher ratios. The one for 4.11 and below will work with all ratios, but requires a spacer between the ring gear and LSD unit if you are using a 4.375 or higher ratio.

 

My Datsun 1200 uses an H190 rear. The 4.625 ratio I just had installed required the spacer behind the ring gear to get the proper gear engagement.

 

Additional LSD and ratio information is also available in the Bob Sharp's Datsun Competition Prep Manual (for Roadsters) on line at the following link:

http://www.datsun.org/roadster/info/dcpm11.pdf

 

I realize this doesn't help fully, but might give you enough information to ask the right questions.

Edited April 3, 2009 by Dime Dave

[Duncan]

Check this site

http://www.oem-surplus.com/nwp/index.htm

 

You can browse OEM parts by model of car, or look lower on the page and browse by part-type (radio,driveshaft, etc, etc)

 

CALL THEM before you buy anything to verify stock and price. I have had very good luck with them.

[pl521sss]

For some good Nissan LSD info go to this site:

http://www.gordon-glasgow.org/lsdtech.html

 

From the information there 4:11/4.375 is the breakpoint between the A/B differentials. I do not have a copy of my Nissan Comp catalog handy to verify which is the A or B.

 

The difference between the A and B LSD's is the position of the ring gear flange. The one for the 4.375 is closer to the pinion gear and will only work with the 4.375 and higher ratios. The one for 4.11 and below will work with all ratios, but requires a spacer between the ring gear and LSD unit if you are using a 4.375 or higher ratio.

 

My Datsun 1200 uses an H190 rear. The 4.625 ratio I just had installed required the spacer behind the ring gear to get the proper gear engagement.

 

Additional LSD and ratio information is also available in the Bob Sharp's Datsun Competition Prep Manual (for Roadsters) on line at the following link:

http://www.datsun.org/roadster/info/dcpm11.pdf

 

I realize this doesn't help fully, but might give you enough information to ask the right questions.

 

 

Thanks for this info Dave!!

Your name sounds familiar

Think you won many big races and one not too long ago

[athoose]

Thanks for the links Dime Dave. I think you