You'll notice the difference a lot. Going from 3.54 to 3.7 is a little change but two steps down to the 3.9 is a lot of gearing change. I think I might go with 3.7 in my Z

Those old half shafts are actually really strong

@BoostShackSpeedshop

5 жыл бұрын

They are not strong at all. They break very easily

@Stevesbe

5 жыл бұрын

@@BoostShackSpeedshop I've had hundreds 10 second passes in the 1/4 and rarely broke them. And more then a few 9s before I got a real chassis to put my motor in

Thanks for these videos they have helped a couple of times. How much does kyle sell those adapters for?

Do you still have those companion flanges for the 240z or if you could tell me who to contact about them i could use them i keep breaking halfshafts

R200 diff... I have same project but I’m confuse in this part... so r200 diff fits perfect or I need to change anything else... please help me

I was thinking of going this route with the new ls1 swap. But even with my r200 and the weak stubs , decided on the Ford 8.8 diff with billet stubs. Hows the z31cv holding up?

Can we have more videos on the Datsun 620 please

Dear Boost Shack, I want to upgrade my r180 to r200 due to long shift from gear 1 to 2 to 3 and so on. Can you you please help me with a list of what I should purchase prior to my upgrade? I am running stock r180 in my 240Z. Rb25det Neo, Haltect ecu and all the good stuff except for the r180. Thanks

Did you have those made or buy them online?

Dear sir, I am upgrading my stock 240Z cv axles to 300Z turbo. I need help to contact Kyle to purchase the 25 splines adapters flange for my 240Z. I already got the 300Z turbo cv axles. Please help.

Cools steering wheel ,from what car did you get the CV Axles and R200 Differential with the 3.90 Gears.

@BoostShackSpeedshop

7 жыл бұрын

it's the factory differential from a 1981-1983 non-turbo m/t 280zx. I added a LSD carrier made by OBX and rebuilt the OBX with upgraded internals and fasteners. I had a shop install the carrier and rebuild the seals and bearings which caused complications the first time around

What size or thickness of metal is the companion flange that you had made? Is it 1" thick metal before the welding in the Datsun part.

@BoostShackSpeedshop

6 жыл бұрын

Remedy Z no I believe it's half Inch. But the center is milled out so the original flange sits into it by about 1/8 inch so it fits snugly before being welded together

@remedyz1568

6 жыл бұрын

What is the with of the flange...6"? I'm about to order 1/2" thick by 6" wide by 12" long steel plate. And then just cut it off in 6" length.

when you took out the output shaft there was a seal. Did you have to remove that seal before you installed the 300zx cv axle? or did you leave in? the reason I ask is mine won't seat all the way, I'm wondering if I should remove the seal to make more room.

@BoostShackSpeedshop

5 жыл бұрын

There is a left and a right to the z31 axles. That could be why it's not seating in.

@bajaracer1

5 жыл бұрын

@@BoostShackSpeedshop Yeah I checked and that have them correctly, but still, both sides won't go in all the way.

What brand limited slip did you go with?

@BoostShackSpeedshop

6 жыл бұрын

Hector Romero it's the OBX unit that fits the short nose r200 240sx diff

I don't shun you. I have factory stub axles and a factory open diff at this point!!

@BoostShackSpeedshop

7 жыл бұрын

you live dangerously lol. next video i'd like to setup 2 step launch and i was too afraid to launch the car on stock axles. the stockys hold up just fine from a roll. it's that launch from a dig and sudden torque change that kills the U-joints

@SpooledUpTV

7 жыл бұрын

Haha I like to party Jesse. You should know this by now!!

@firenguyen517

4 жыл бұрын

@@BoostShackSpeedshop Dear sir, I have an R200 long nose 3.9 Non LSD and I want to convert it to an LSD. What should I do to make this happen? Please help. I am new to the differential world. BTW, I am currently have a long nose R180 in my 72 240Z which I want to upgrade.

@BoostShackSpeedshop

4 жыл бұрын

@@firenguyen517 I used the OBX lsd carrier. It's the one that fits the 240sx shortnose r200. The ring gear is the same in the shortnose and longnose so it will fit

@firenguyen517

4 жыл бұрын

@@BoostShackSpeedshop Dear Jessie, please let me know from what website you bought your OBX carrier and how much it cost? Thank you sir.

selling your old diff? lol