Stupid_fast

@Dirty Evo, Definitely the CR box will give you a huge boost in track performance, you will love it! Does your 510 have stock 3.90 gearing ?? If so that will be okay for the ZX box, but 4.1, or 4.3's would be better for track-only use. Calculate top speed in 5th gear and choose your gear ratio off that IMO. The ZX uses an R200 diff, not bolt on for a 510. I don't think there is much else you can use off one.

The ZX n/a 81-83 is the 'close ratio' 5 speed. I don't know why, because the 1980 5spd has a shorter 5th gear. The 1979 box has a shorter 1st>2nd which makes 2nd>3rd shift drop quite large. I currently have the 79 box on my L20b, and I'm going to put in a CR 83 box. According to sources online, the 240z 4 speed has these ratios 1st 3.549, 2nd 2.197, 3rd 1.42/, 4th1.00 These are extremely wide gears, but would work with a low geared rear end(3.54-3.70) for decent street driving. The 'CR' box has the following ratios 1st 3.062, 2nd 1.858, 3rd 1.308, 4th 1.00, 5th 0.745 which is good for use with a high geared (3.90- 4.6 ) differential. Dropping in the ZX box will make the first 3 gears much taller and closer to 4th, if you currently have a 3.90 rear end this will be an optimal setup for the track. This will completely fix your problem, 4th gear WILL be the same, but you will use 3rd gear for longer, and have a more usable 2nd gear for low speed(45-50mph) corners. Unfortunately, you will get a ton less acceleration off the line in 1st gear with a low torque L16, and it might feel a bit sluggish until you get to the powerband in 1st, after that you are going to be going a lot faster. This effect will decrease depending on your rear end gearing, a 4.3+ would be very nice for an l16 or even l20b and may make 5th gear usable. Short story: GET THE CR BOX!!! You will never regret it!

Springs on my cressida are cut ... 1" drop from stock looks and handles loads better. Cutting same 1" drop on my ZX plus new bushings and sway bars ... should hold out nicely until can afford coilover suspension ! Cutting springs is fine to get rid of crap factory ride height if your roads are smooth enough for lowered vehicles.

Are there any copyright claims on these issues ? I have 510 again newsletter from late 1985 to last issue 1992. I have a scanner at home, I could upload all of them. Only reason I have not done it was because I was curious if anyone still owns the rights to the content ?

F*in ricer. :fu: FYI those pictures are great. :thumbup:

Some honda civic lit up his tires out of the parking lot... The cop heard it from up the hill. ...A honda civic with a blue 510 body kit.

My car broke in SF @ 9:50, I limped it home, fixed it, then came back and met up with them at about 12:00. \

If going to all that effort, why not S13 IRS ? 510 IRS is terrible compared. Sweet goon.

...I'd like to see this. New thread, slow-motion babe thread! Yeah, burnouts! but with my crap street tires not my hankooks plz...

you guys are making my car seem luxurious ...

Its carb, a stock motor that is easy to tune out by feel. Swap the idle jets, 60 primary/ 50 secondary, make sure it feels good 1500-2500rpm, then start messing with the primary jets.

Does it cut out and then accelerate(lean stumble), or sputter accelerate slowly then pick up(rich stumble)? Idle is too lean, a 60 main/ 55 secondary should be sufficient for a stock L20b. A 160/150 (primary/secondary) seems too rich for a stock motor, is yours cammed? should be more like 145/150. Maybe 150/155. I've been working this out of my car, but with a heavily cammed (.490 lift) L20b.

@Alex Datsun, I didn't mean it in that way. . .I did understand what you where saying in your post.

@skib, we need a wiki... like the datsun 1200 wiki where we can all contribute and compile information .

@INDY, I heard it. Its definitely not a v6.

That guy lives there, I've seen it while there before. I cant believe anyone in that place could afford that.

^They are Watanabe replicas, so are my konigs. Who cares? Not everyone can afford $3000 for a set of rims.

So... Stripped the interior to fix the wiring. Then I joined HybridZ and found a for sale thread. The turbo has 0 shaft play, less than 5k miles. Also the timing chain was changed. I traded the 3.91 N/A diff for the 3.54 turbo diff, put the N/A axles on it. Also installed the turbo fuel pump. Swaybar + bushings + cut springs... Decent temporary suspension setup. Back on the ground and ready for the L28e to be pulled ...

I've heard things can break if you have a large buildup of crank case pressure ... but unsure as to what exactly happens. Block vent goes to PCV valve on intake.

Valve lash is set with feeler gauges, a 17mm and 14mm wrench. 290 lift ? isn't that stock spec for an l20b ?

INDY, why don't you notch the front framerail for the LCA's and tie rods ?? A small notch can gain valuable suspension travel and not effect rigidity of the frame.(if done correctly...)

drive it with 5" ground clearance. Carry around floor jack to lower coilovers as theft deterrent. Perhaps some sort of secondary air shock setup that allows for suspension height modification, yet rides on coils most of the time?