Somebody please help! Clutch, flywheel, LSD problems.

[GTI44]

Hello guys, I need some help with my 2005 MK5 GTI.

Before Christmas I bought a nearly new Helix clutch and single mass flywheel (used for 3k and supplied and removed by AKS tuning) and a second hand box with Quaife ATB LSD already installed. I got these fitted and within 500 metres I knew it wasn't right. The car is standard otherwise.

The diff was definitely working but on deceleration / overrun there was a loud sort of grinding noise. It was noticeably louder at higher revs and got a bit louder as the engine warmed up. It happened in every gear but disappeared as soon as you dipped the clutch. I think it may do it on acceleration too but it is much quieter if it is.

After speaking to a few people I had the box taken off again and took it to a local gearbox specialist. He said the diff looked fine but a few gears were worn so he replaced these (by canabalizing the original box) and did a general overhaul / refurb replacing anything that looked tired.

Anyway, I had the box fitted again today with new OEM box oil (recommend by Quaife). So I picked the car up again tonight, and it is exactly the same!

I just don't know what to do, and no one in my area seems to be able to sort it and it is costing a fortune in labour, oil etc.

Does anybody have any ideas or recommendations!?

Any help very much appreciated 

Cheers!

[rubber toe]

Did you have a new release bearing fitted ?? I can only assume someone has checked it since the box has been removed , are you taking into account the added noises you get when going smf?

[GTI44]

Thanks for the reply mate, yes I had a new one before fitting. To be honest it's the first SMF I've had, but know a few people who have had them in the past and dont remember it being anything like this. Would a SMF be pretty loud on overun? It is a very metal on metal type noise.

[cooljimy84]

Like a straight cut gaerbox ? I've only heard them on old Mimi's and they sound wrong/broken but is perfectly normal...
Might be worth utubeing a video so ppl can hear

[jasam]

Hi mate, did you sort noise problem on gearbox?

I have same problem, also helix clutch and single mass flywheel

[Pikey Motorsports]

Possibly the clutch all smf clutches I have used do it

How much did the box rebuild cost out of interest

[jasam]

was that sound same as mine?

here:

[MJGib]

It's proberly the SMF they cause vibrations
Or the only other thing I can suggest is the bearings (internally)

[Dallen75]

Its your SMF mate its called chattering and one minute it can be fairly quiet, the next rather loud, ive got a loba sachs setup mine does it too

[GTI44]

Possibly the clutch all smf clutches I have used do it

How much did the box rebuild cost out of interest

It was £288 mate - I know some parts were new, others were re-cycled from my other (good) box

[GTI44]

was that sound same as mine?

here:

I can't really hear for that mate (over the intake) but to be honest I tried to video mine and it dIdnt really record very loud at all

[GTI44]

Its your SMF mate its called chattering and one minute it can be fairly quiet, the next rather loud, ive got a loba sachs setup mine does it too

Thanks mate, at high revs it's always loud (very loud!) but at low revs and idle it can be worse sometimes than others. I still think it's worse than it should be as everyone getting in the car thinks the engines about to blow up haha but it does reassure me a little!