Yarb

LSD R 200 units are extremely rare. If you can find one grab it. Not sure where you are located. Tried to look at your profile and it errored out. I have a R200 3:90 available but not interested to ship it. Just too costly.

Par for the course. Very common problem

@Dave WM

3:73 or 3:90 ratio. Not sure what the ratio availability is for the r180.

Engine.

See two pics. Probably have to go to YouTube

Might want to consider ceramic coating your manifold/ header to drop the temp. Fairly inexpensive.

Possibly the motor windings have deteriorated and not passing on enough current.

When I said solution I mean it’s a variable that could be causing an issue. Either way coil’s don’t last forever.

From looking at the pic of the coil, An inexpensive solution would be to replace the coil. NGK offers one on Amazon that’s very reasonable.

If that’s the ground from the AFM iirc it’s a short double lugged wire going from the bottom of the AFM to the ground point on top where it attaches to the frame.

Just saw this. Maybe I’m late to the game here but this is the first I’ve seen in High Zinc additive. https://www.amazon.com/Castrol-Classic-20W-50-Conventional-Motor/dp/B09QXWLY2Y/ref=pd_rhf_d_cr_s_bmx_gp_la4mehqn_sccl_1_3/139-8531450-3914603?pd_rd_w=kiQ7z&content-id=amzn1.sym.9a6f1177-7e55-462d-bd77-cfaee186750a&pf_rd_p=9a6f1177-7e55-462d-bd77-cfaee186750a&pf_rd_r=XNJ1S7EH8MEJY42D1DAN&pd_rd_wg=0ExCb&pd_rd_r=7f457931-43eb-49a8-9f77-ee3270dc1cf9&pd_rd_i=B09QXWLY2Y&psc=1

Not sure you knew, CarPartsManual.com is the saving grace for finding anything related with a p/n attached

Doesn’t look like the 78 model setup.

That’s correct the plastic piece has done its job. Not a show stopper by any means. Someone on the forum will hook you up.

Go to CarPartsManual.com and take a look at the break out of the parts. No rocket science here.

Should not have a problem finding one here on this site.

That looks like the spring and bracket off of a Datsun EFI throttle body.

@Terrapin Z

@Racer XCan probably give you the best advice on what you need to do going forward. My 3.1 build is designed by the engine builder. Time comes to where you have to rely on experience and who you trust.

OER makes a 47 series for higher horsepower engines.

I’m going to run the 47’s. He’s building a stage 4 series motor for me with my LD28 crank.

Take a look at OER carburetors out of Japan. My understanding from Datsun Spirit is they are a hybrid mix design of Mikuni & Webber carburetors. Eiji swears by them. They come in a complete kit as well. Just another avenue to investigate.

Three is the lucky number! Count me in as well friend.

A lot of people on this forum have used power brake exchange in San Jose Ca. Including myself. They have two locations. If you want it powder coated they will suggest which location to send it to. Around $250