R34 Gt-t Problem

[SKYLiNE 34]

Hey,

The other day I took my R34 GT-T for a spin with a couple of the boys from the ACT,

it was all well and fun and full off speeding around corners as you do. etc.

but now when my revs are around about 1100rpm-1500rpm when the car is actually moving

I hear a small rattle from somewhere up the back. I think it might be the diff, but I haven't noticed

any other problems like it being any slower or any worse for wear.

Has anyone else experienced this sound its kind of like a buzzing/rattle, metal on metal and has a brrrrrrr sound but whiny.

That's probably the best I can describe it. I'm taking it to a mechanic tomorrow but I thought I'd check up on here to

see if anyone had any idea what it might be and what its gonna cost me.

Cheers, Dean.

[battery]

Hey,

The other day I took my R34 GT-T for a spin with a couple of the boys from the ACT,

it was all well and fun and full off speeding around corners as you do. etc.

but now when my revs are around about 1100rpm-1500rpm when the car is actually moving

I hear a small rattle from somewhere up the back. I think it might be the diff, but I haven't noticed

any other problems like it being any slower or any worse for wear.

Has anyone else experienced this sound its kind of like a buzzing/rattle, metal on metal and has a brrrrrrr sound but whiny.

That's probably the best I can describe it. I'm taking it to a mechanic tomorrow but I thought I'd check up on here to

see if anyone had any idea what it might be and what its gonna cost me.

Cheers, Dean.

sounds normal to me!!

you should only be down this low in 1st!

[SKYLiNE 34]

So whats the rattle then ?

Yeah I realized that. But at 60k's in 5th its sitting pretty much right on it.

[mad082]

don't use 5th at 60kmh.

as for what it is, it could be 1 or many things. could be something loose in the boot (jack, etc) or something down one of the side passages of the boot. it could be the diff, it could be a diff mount, etc. the list is rather long of possible causes.

[Panko]

What kind of clutch are you using? I have the same noise as well and I"m using twin plates clutch

I think it could be thrust bearing on the way out. The sound disappear after you've gone past 1500

rpm isn't it? IMO I think it's okay to cruise in 5th gear at 60km/h, saves me more fuel

[mad082]

What kind of clutch are you using? I have the same noise as well and I"m using twin plates clutch

I think it could be thrust bearing on the way out. The sound disappear after you've gone past 1500

rpm isn't it? IMO I think it's okay to cruise in 5th gear at 60km/h, saves me more fuel

that really depends. in a turbo car, with their lack of torque at that sort of revs, the moment you come to the slightest incline, or even hit a headwind, you will end up using more fuel than if you were in 4th. i've done tests in my pulsar (natro sr20) using a consult cable and program and the difference in fuel used between 4th and 5th on dead flat ground cruising at 60kmh was 0.5L/100kms, however the moment you get to the slightest incline, or have to accelerate after slowing down a bit, 4th gear is more economical as you can use a lower throttle percentage. in a turbo car where there is much less torque at the lower revs i'd say that this would be even worse. remember that fuel economy isn't just based off revs, it more has to do with throttle percentage. you can be in 5th gear at 2000rpm with your foot flat to the floor and use more fuel than being in 3rd gear at 4000rpm using 20% throttle

[Panko]

Agree with you, I have to shift to 4th sometimes as well when there's an incline, although I use 5th gear as much as I can

[SKYLiNE 34]

It still has the factory clutch, but it stops after you accelerate past that, I took it

to the mechanic to day and he said that because the exhausts have a heat shield around them

sometimes rocks get stuck in there and can make a rattle, because when you don't press the

accelerator to hard while at a standstill it makes no noise but when you give it a bit, you hear the rattle

but i always hear it around 1400rpm no matter what gear I'm in. So i'm not really sure the stock exhaust

is being replaced with a full 3' in 2 weeks so if it's how the mechanic said then the rattling should stop.

Fingers crossed.

[mad082]

the engine at that revs while driving is probably creating a vibration that, while you might not feel it, is causing something, such as a heatshield to rattle.