maxtor

When you need one and they are the only source, they can charge what they want and we will have to pay the price. $160 does not sound to bad. Thanks

I have a 1974 260Z and the servo just went south. I came to a stop and had to stand on the brakes to get it to stop. when depressing the brake pedal, the engine would increase rpm. At the time, I thought what the heck...After checking the thing out, the diaphragm must be bad, causing a vacuum leak, thus the increase of rpm. I called all the local parts stores, and they can not get a replacement. I called Nissan and they said it is no longer available. Napa will send it off to get rebuilt. Have any of you encountered this problem, and if so where did you get a replacement?

That is awesome. Near 9 second run is mind boggling. Our best (240ZV8) is 13.3 but we are working on it this winter and hope to get it down to the 11's with nitrous and slicks. We built the 240Z to run top end races,(Silverstate Nevada race) so it will need a major overhaul to be fast in the 1/4 mile. Our other car is a 1960 Falcon with 428scj engine and nitrous. We just spent $3,000 worth of go fast goodies for next year and hope to be in the 9's with it. As you know, the money never stops flowing into a project. I really do not want to know how much I will need to spend. Great job... I to would like to see how you installed the 9inch Ford rear end.

I have been loosing traction the two times I took it to the drags, and thought that it was right wheel spin. Because of your post, I just took the car out front of the house and got on it. It left equal tire marks from both wheels as far as I kept my foot in it. So with this information, I will take the car out to the drags with the new slicks, and see what happens. Maybe I will not need a lsd.

Yep,, you have a good point. It would not work for IRS units.

Back in the late 50's to improve traction at the drag strip, when we had open differentials, we used to stiffen the left rear spring so that it would plant the right wheel on launches. I would think that with adjustable shocks and spring spacers, you could do something like that for our Z cars. Has anyone tried this method for traction at the drag strip? I will give it a try the next time I am at the drag strip. For you young guys, the torque action from a launch tends to raise the right rear up, causing the right wheel to spin. This was a easy, cheap way to help traction back in the day.

To much is better than not enough.

I have a R200 3.54 gears, and just purchased a used R200 with 3.90 gears. At first I was going to buy a limited slip assy. for the 3.90 gears, but they are out of my budget. So I will just swap to the 3.90 because I want to drag race the car. 240Z with ZZ3 350 engine, 700R4 trans. I purchased some drag slicks and wheels for the car. My question is,,, what weight synthetic differential oil do you recommend for this application? Thanks Maxtor

Thanks gjc5500; Now its time to get out my welder.

I have read many articles here about welded differentials, but does anyone have pictures of where to weld so that the differential is locked up?

I have extra R200's and looks like lsd's are going to be hard to find. Anyone have a picture of one welded?

I did a search for the above, and found threads for lsd only. Anyone using synthetic differential oil in their open R200? What brand and weight are you happy with? I called Tim on the Power-Brute lsd, and he said that he still has 7 power-brutes on back order. He is not sure if and when they might be in.

I think that your math is correct. I came up with about a 3.90 which is about what you came up with. The taller the tire the larger the patch on the ground, so I hope the softer compound of the drag radials overcome the smaller patch of rubber on the ground.

I have Goodyear Eagle GT+4 P215-60ZR16 tires on my car now. Traction is a problem at the drags. I purchased two BF Goodrich Gforce t/a drag radials that are P215-60R14 and mounted them on some light mag wheels. My differential is a 3.54 open R200. I hope the shorter sticky tires will: 1. effectively lower my final drive ratio 2. Not loose traction. Anyone have experience with these short sticky tires?

Around here, R180's are everywhere. I have two of them. I have three R200's just in case I blow one in our 240ZV8. Finding the axle shafts that have the four bolt flange for the R200 is difficult. CV shafts are the norm here. Redding Calif.