Rosco

SX trans 1st gear: 3.321 2nd gear: 1.902 3rd gear: 1.306 4th gear: 1.00 5th gear: 0.759 81-83 zx trans 1st gear: 3.062 2nd gear: 1.858 3rd gear: 1.308 4th gear: 1.00 5th gear: 0.745 This I'm sure is a dumb question but I don't quite understand the ratios. Which out of these two is a closer gear ration more suitable for a track car?

This http://www.rhdjapan....main-shaft.html unit won't work with the SX trans according to OS. But thank you for the link

Best synonyms: most advantageous, most useful, most suitable, most fitting, most appropriate; most prudent, most sensible, most advisable

I have a 280Z track car with a built L28 and a 240sx trans, it has a OS Geiken LSD (not sure the gear ratios). Id like a trans with a taller first, closer second and third and a shorter fifth than the sx trans. can I get gears for the sx trans and build it? is there a trans out there that fits the bill that will bolt in with little modification? or a lot of mods? Any guidance will be much appreciated. I'm shifting to fith at about 120mph, hp peaks at 7,300+/- rpms 357hp @ flywheel 300ftlb torque @flywheel 16" wheels with 245/45z R6's Stock gear ratio diff with OS Geiken LSD (not sure of ratio, one search says 3.54 another says 3.36) I have that SX trans in it now and if 2nd and 3rd were closer and 5th was a little shorter it would be great. Custom built dog box with straight cut gears is about $7-8k Budget is about $4-5k

I'm running an adaptronics after market computer, set up by Rebello Racing. It works great. Look them up and see if they can help you. Make sure this is what you want to do because once you start ripping the ecu out it would be hard to go back. It's also going to cost you.

Thanks. I guess I had the wrong number. I got in-touch with him and ordered everything I needed. Seems like a nice guy.

Someone gave me the wrong number. Sorry to wast space

I have a 75 280Z. 6 throttle bodes, stock fuel line from the tank to the motor, 1983 280zx fuel pump, running 43 psi I heard the noise while driving, kinda random but I can make it do it by driving slow in 4th gear. It almost sounds like a bad universal joint. I put it on a lift, with me in it revving the engine at different RPM's Charley said he could feel the noise in the fuel line. Have you ever heard a water line with air in it? "water hammer" Thats how he described it. Have you ever heard of this? Do I need a bigger fuel line?

Thanks

I have a 1975 280 and I like the look of the 240 bumpers. What does it take to make them fit? Or where's a link to this topic? I know it's been talked about a thousand times. Thanks ~Rosco~

Why didn't I think of that? Thanks!

(Rosco) From what I can gather, in the original linkage, the bracket on the fire wall in line with the center of the intake, in the earlier models has always given a little bind at the top. I red if the arm on that bracket isn't straight up and down you will get the bind. They changed the design in later models. I've tried to move that thing all over the place and can't get rid of the bind, or I'm hypersensitive to it now.

I have a 75 280Z, it has a n42 with six throttle bodies, the old throttle linkage ties into the new (see attachment). When I try and give it just a little gas it has a stiff point that keeps it from being a smooth acceleration. What throttle cable would work on this setup? Please do not cross post same post in other forums. Thanks

It sounds like I need to educate myself some more. Thanks for the help

There special? I have no idea what they mean. What is a WB02?

I'll look into the megasquirt Thx

thanks that helps I'll study it so I don't look like an idiot

I was typing 240sx turbo tomany times so I typed 240sx turbo(2t) so I mean 240sx turbo sorry

thanks

Has anyone ever heard of a N42 Head not having the ports for the injectors or the center bolt holes for the injected intake?

Have you ever heard of Rebello? It only loads up at red lights and it's vary cold natured. it runs good with your foot on the gas, as a matter a fact it puts you back in the seat at full throttle. I tried to run a resister in series with the coolant temp sensor and I set the resister before I started it and as soon as I start it the meter reads over the limit??? I tried running it with just my resister and no sensor and got the same results. I know I know change out the EFI but it is so close with out it. THANKS for the info ~Rosco~

I shouldn't try to keep up with your abbreviations I don't no what I'm talking about ha. I've had pretty good luck with tweaking the AFM it's simple more tension leaner, less tension richer. the 02 reads at an idle .9V and at half throttle it's reading 1.73V or so. What is a WB02? If the OEM EFI is Micky mouse what is the superman? and where do I get it?

I'll start by saying I no enough about mechanic work to get me in trouble. I learn fast and have a pretty good understanding of z's but some of the abbreviations used throughout this site I don't get, but I'll learn. I have a 75z with a motor rebello racing built me. It has a 3.0 piston kit, 63 DI cam (what does this mean?),240sx turbo(2t) injectors, 2t throttle body, 2t mas air meter with the guts out of my 75 mafm, header, 2 1/4 exhaust, super tech intake hi flow valve, mild street port?, valve grind c&a?, adjustable fuel pressure reg on the rail and a modified manifold. They sent me the motor, I put it in and had a few problems with fuel.I narrowed it down to the tank so I dropped it, cleaned it and put this stuff from jegs that stops rust from coming back. Then I had to put a 280zx turbo fuel pump on it to keep up with the volume the injectors want. The next issue I had was flooding on cold starts so I unplugged the cold start injector, that helped but my 02 was reading 1.5 - 2 v. DO I WANT THE 02 TO READ .5 OR SO? If I get it to bounce between .7 and .5v it idles good but I loose throttle response because theres too much tension on the afm. If I drop the fuel pre. to 25 it leans out but I loose HP. I've found a pretty good spot it's fuel pre 32, .9v on the 02 and less tension on the afm. I'm still rich but I have HP and throttle response. I've seen a few post saying you can't put a cam in these motors without changing the ecu/efi but rebello says he has two other customers that have the same motor and they have no problems. My car runs great at full throttle it's just rich at an idle Now the question 1 is there any way to lean this thing out other than the afm? thank you ~Rosco~