so I'm planning to get an S30 Z! 240 or 280?

[BuDavid]

nothing sounds like a kid.. see the attached pic.

#60

[m4xwellmurd3r]

massive dust, yeah tell me about itLOL

sometimes I have the feeling that we breat 20 dust over here when there is a sandstorm:)

if bumpers cause instability, they will be falling of baby!!:laugh:

on my X - 280Z I had a borg warner T5, it was heavy a bit but nice ratios!

I would definately change from 4 speed to 5 speed if I find one!

thanks.

i'm only going to pull the front bumper off of my 280. I like the rear bumper actually (it has the over rider bar on it)

i know the late model 280's had the 5 speed standard, but it might have still been an option. (5spd was an option, 4 standard if i remember)

i just reminded myself something. I need a new pre pump fuel filter (it's a g3 i put in to keep it from messing up the car) it's gotten so full that once the engine is warmed up, it jerks at 4k on up if i go wot. at least i know my car isn't running better because of it. it was blowing a smoke screen of black smoke, then i cleaned up the bullets and the connector for the water temp sensor with an oring pick, and it cleared up a lot. tommorow, the connections are going to soak in a cup of vinigar all day to help clean them up to a brilliant shine hah.

oh, i forgot to add

iirc, the 4spd and 5spd have the same ratios, but the 5spd has the overdrive in it. so basically the same except the overdrive.

[BuDavid]

I know about the 4 sped and the 5 speed difference, that's why I'd like to have 5 speed for sure.

but what was all about the fuel pump?? I can't figure out why did yo umention it now:)

[Nota280]

well the 280z is actually less stable at high speeds because of the big front bumper from what i understand.

Perhaps a G Nose would help.

[sblake01]

i'm only going to pull the front bumper off of my 280. I like the rear bumper actually (it has the over rider bar on it)

i know the late model 280's had the 5 speed standard, but it might have still been an option. (5spd was an option, 4 standard if i remember)

i just reminded myself something. I need a new pre pump fuel filter (it's a g3 i put in to keep it from messing up the car) it's gotten so full that once the engine is warmed up, it jerks at 4k on up if i go wot. at least i know my car isn't running better because of it. it was blowing a smoke screen of black smoke, then i cleaned up the bullets and the connector for the water temp sensor with an oring pick, and it cleared up a lot. tommorow, the connections are going to soak in a cup of vinigar all day to help clean them up to a brilliant shine hah.

oh, i forgot to add

iirc, the 4spd and 5spd have the same ratios, but the 5spd has the overdrive in it. so basically the same except the overdrive.

First off we'll deal with the last comment. WRONG! The four speed and 5 speed do not have the same ratios. 1st, 2nd, and 3rd are all slightly higher in the 5 speed. And there are three different overdrive ratios in the 280Z/ZX five speeds depending on which year it's from. The 5 speed was never standard until the ZX. It was an option on the 77-78 280Z. (in the US)

I agree with Arne's comment about bumpers but that's just my opinion so nothing else needs to be said there.

If your pre-pump filter is filling up with crud, you don't need another pre-pump filter, you need to drop the tank and either clean it or replace it. In fact, when everythinig is right, you don't even need a pre-pump filter. Cleaning the connectors is never a bad idea but that won't help your tank. If you think driving with a dirty gas tank and changing the filter every now and then is untimately going to solve your problem, I think you'll be dissapointed.

BuDavid, I'd throw out his example of a 280Z as any kind of a basis to decide between the 240 and 280. A properly maintained 280Z doesn't exibit any of those problems. Nor are they "less stable at high speeds because of the big front bumper" as earlier stated. And the other statement: "it's very sensitive to vacuum leaks and corrosion on the connections" would apply to any car that has ever been built. The key is proper maintainence. My 78 starts and runs whenever I get in it, doesn't crap out an 4000rpm, doesn't wander at high speed, doesn't fill up the fuel filter with crud, etc., etc.

[Sailor Bob]

Hi - got to weigh in on the trannies - I read the same thing somewhere: 5 speed being the same as the fourspeed but with an overdrive. In the service manual page mt-14 (1977) it states: the 5 speed transmission covered in this section is similar in all respects to the four speed transmission (type F4W71B) stated previously except the overdrive position on it.

Like I said I saw it somwhere else but it may have been a reference to the early 5 speeds.

[sblake01]

Compare them on this chart:

[dade280]

I dont know if they have same ratios or not but in my owners manual on page 26 where it shows the shift speeds they are exactly the same

1st 2nd 3rd 4th 5th

0-38 15-60 22-95 Over-30 -

0-38 15-60 22-95 Over-30 over 35

Not trying to start arguments. This is what my book tells me

[AndysPlit]

First off we'll deal with the last comment. WRONG! The four speed and 5 speed do not have the same ratios. 1st, 2nd, and 3rd are all slightly higher in the 5 speed. And there are three different Nor are they "less stable at high speeds because of the big front bumper" as earlier stated.

....That's what I thought. Thanks! My car has never wandered either at high speeds

[Sailor Bob]

Another contradiction for you - from Zhome an article by Carl Beck (and others) about Z trannies and rear ends: "1977 through 1983 Factory Four/Five Speed Transmission Ratios Note: Ratios in 4spd.'s are the same as 5spd.'s For 1st-4th gears". This was only a headline for a lrge amount of data refering to these years.

I am guessing this is refering to any given year as opposed to the collective group. I am fairly certain that the ZX trannies vary from the 77/78 Z versions.

[sblake01]

I dont know if they have same ratios or not but in my owners manual on page 26 where it shows the shift speeds they are exactly the same

1st 2nd 3rd 4th 5th

0-38 15-60 22-95 Over-30 -

0-38 15-60 22-95 Over-30 over 35

Not trying to start arguments. This is what my book tells me

No arugument intended but if there was one the manual wouldn't be of much help either way. I was just giving facts. If you want to argue with facts, that's up to you. Those numbers from the owners manual are pretty general. 38 mph with a 3.592 first gear vs. 38 mph with a 3.321 first gear wouldn't make enough difference to make a change in the manual for four speed vs. five speed.

[m4xwellmurd3r]

BuDavid, I'd throw out his example of a 280Z as any kind of a basis to decide between the 240 and 280. A properly maintained 280Z doesn't exibit any of those problems. Nor are they "less stable at high speeds because of the big front bumper" as earlier stated. And the other statement: "it's very sensitive to vacuum leaks and corrosion on the connections" would apply to any car that has ever been built. The key is proper maintainence. My 78 starts and runs whenever I get in it, doesn't crap out an 4000rpm, doesn't wander at high speed, doesn't fill up the fuel filter with crud, etc., etc.

i've only heard that they are. but like hell am i going to push it to 100+mph to find out on public roads. other than that it's fine.

i only mentioned the corrosion and vacuum leaks incase when he get's one, it's something that simple and not something more severe like it may seem.

mine starts up right away and runs fine, but in AZ it's hard to find someone who will boil and line a tank. I haven't found anyone yet so i have to bandaid it like that....(i'd rather not, but until i find a shop that will boil my tank i'm stuck)

i got the gear ratio info from here zhome as well

from 77-79 the 4spd and 5spd had the same 1st through 4th. (according to the article)

(anyways, sorry about earlier)