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throwyourbike

Original Poster:

705 posts

157 months

Friday 16th September 2022
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My 2005 LS2 Monaro VXR is still on the original clutch so I’ve decided to treat it to a new one.

I’m trying to pull together a shopping list of everything I’ll need.

So far it looks like this…

Clutch
Slave Cylinder
Rear Main Seal
Spigot Bearing

Is there anything else I should change/upgrade while the gearbox is off? Short shifter? Remote clutch bleeder?

I’ll probably order from Rock Auto.

Can someone more knowledgable than me help confirm part numbers please?
For example, if I search under 05 Pontiac GTO it suggests LUK clutch kit 04173. I think I should be ordering 04905 but it only shows under the 04 Pontiac GTO.

Lincsls1

3,415 posts

146 months

Friday 16th September 2022
quotequote all
throwyourbike said:
My 2005 LS2 Monaro VXR is still on the original clutch so I’ve decided to treat it to a new one.

I’m trying to pull together a shopping list of everything I’ll need.

So far it looks like this…

Clutch
Slave Cylinder
Rear Main Seal
Spigot Bearing

Is there anything else I should change/upgrade while the gearbox is off? Short shifter? Remote clutch bleeder?

I’ll probably order from Rock Auto.

Can someone more knowledgable than me help confirm part numbers please?
For example, if I search under 05 Pontiac GTO it suggests LUK clutch kit 04173. I think I should be ordering 04905 but it only shows under the 04 Pontiac GTO.
I think you've got it covered. I wouldn't bother with a short shifter, the VXR already has a shorter throw than the CV8.
Definitely get a remote clutch bleeder in, and I'd throw a new gearbox mount on too since its coming off.
The LS1 and LS2 both use the same box, and the same clutch etc.. The LS7 kit is a great replacement.

LS7 clutch kit LUK 04905 - includes appropriate flywheel and spigot bearing.
Slave cylinder LUK LSC384 - this incorporates the release bearing too.
PIONEER 605300 - Gearbox mount.

AAS of Newcastle can supply you with all the gear should you want, or just the remote clutch bleeder. Ring and get a quote maybe?





Edited by Lincsls1 on Friday 16th September 23:00

mfp4073

1,976 posts

180 months

Saturday 17th September 2022
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I would like to add my 2p worth if I may biglaugh
Change the gearbox oil, and check the centre bearing in the propshaft, don’t forget to check the rubber doughnuts at either end of the prop, but hopefully they will be OK.
There is also a white rubber insulator around the base of the gear lever that always seems to split, that will need changing, sadly I can’t remember the correct name for it irked
I think that’s it?.

No how much will that lot all cost….errrr…..££££££ yikes
The good news once it’s all done it will feel like a new car smile

Lincsls1

3,415 posts

146 months

Saturday 17th September 2022
quotequote all
Quite right, so easy to forget so much!
92169185 - White rubber gear gaitor/insulator.
92161752 - prop center bearing.
Both available from RockAuto.
The rubber donuts are most likely fine.

mfp4073

1,976 posts

180 months

Saturday 17th September 2022
quotequote all
Lincsls1 said:
Quite right, so easy to forget so much!
92169185 - White rubber gear gaitor/insulator.
92161752 - prop center bearing.
Both available from RockAuto.
The rubber donuts are most likely fine.
I take it you’re on commission for RockAuto biglaugh
Maybe you could be their UK rep scratchchin

fred bloggs

1,340 posts

206 months

Saturday 17th September 2022
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The LS7 flywheel is very heavy, I may be wrong, but I think its good bit heavier than the ls1 flywheel. A lighter flywheel is always a good mod.
Good call on the gearbox mount.

SturdyHSV

10,206 posts

173 months

Sunday 18th September 2022
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Fidanza do an aluminium flywheel that's much lighter, but it's £££ and you can't get the LS7 kit without the flywheel, so you'd be buying stuff twice frown

throwyourbike

Original Poster:

705 posts

157 months

Sunday 18th September 2022
quotequote all
Thank you for all your help, exactly what I was looking for.

Reference the LS7 clutch kit, I had read that the flywheel is quite a bit heavier than the standard one, thus robbing some performance.
That said, I’ve also heard people say lighter flywheels aren’t ideal for daily driving.

My car is standard, except for a Wortec exhaust but realistically I don’t think I’d notice the loss in performance.
A lot of people seem to go down the LS7 route and I don’t hear many complaints, although a lot are also running more power in fairness.

Any other opinions on clutch options?


Edited by throwyourbike on Monday 19th September 11:20

stevieturbo

17,455 posts

253 months

Sunday 18th September 2022
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If you aren't really intending on more power....there probably isn't much reason not to just do another bog standard clutch ?

Only reason to maybe change, is if the flywheel is buggered. On a price point, it will be the cheapest.

Although you maybe don't want it sitting about in pieces whilst sourcing or skimming the flywheel ? If it has not had a hard life, which I'm sure it has not, the flywheel is likely fine and at most would need a light skim.

Only essential items would be the disc, cover, spigot bearing and slave ( and yes, the remote bleed line option ). And hopefully any new kit will come with new flywheel bolts, as these are supposed to be replaced.

stevieturbo

17,455 posts

253 months

Sunday 18th September 2022
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surprised even the likes of this kit doesn't come with bolts.

https://www.ebay.co.uk/itm/133359136988?hash=item1...

https://www.partsworldperformance.com/flywheel-bol...

ARP bolts....must admit I utterly despise these. Totally crap head design

https://www.ebay.co.uk/itm/234573905012

I used the flex plate bolts instead. Far better design

https://www.ebay.co.uk/itm/224978557625


And unless the rear main seal is leaking, probably not a lot of reason to tamper with it. Although I think later seals are of a more modern design. The old ones were very strange hard material compared to typical UK/JDM/Euro stuff you'd fine which more modern stuff seems to be.
Despite that they do seem to work well


stevieturbo

17,455 posts

253 months

Sunday 18th September 2022
quotequote all
Looks like a cheap non OEM kit of parts.

No idea what make the flywheel is. Some of the postage prices on their listings is hilarious.

https://www.ebay.co.uk/itm/133374712401?hash=item1...

throwyourbike

Original Poster:

705 posts

157 months

Monday 19th September 2022
quotequote all
Thank you Stevie, really appreciate your suggestions.

I am now considering putting another standard clutch back in. The car sees no abuse, never tracked and clocks up most of its miles on the M2.
While I have no immediate plans for more power, I don’t have any plans to sell either, so that could change down the line.

Is the LS7 worth doing just to improve the overall feel of the car though? Or is it not really noticeable daily driving?

The rear main seal has been leaking ever so slightly for years, since before I got the car. It’s not enough to show on the dipstick between oil changes but definitely needs done.

Lincsls1

3,415 posts

146 months

Monday 19th September 2022
quotequote all
throwyourbike said:
I am now considering putting another standard clutch back in. The car sees no abuse, never tracked and clocks up most of its miles on the M2.
While I have no immediate plans for more power, I don’t have any plans to sell either, so that could change down the line.

Is the LS7 worth doing just to improve the overall feel of the car though? Or is it not really noticeable daily driving?
There's nothing wrong with putting a stock clutch back in. Lets be fair, its lasted this long. Don't really know why I had the LS7 fitted, other than I considered it an upgrade and have dreams of cam/head/intake packages, but in reality I'm sure the stock clutch would handle the modest power that would increase by. Probably only required for S/C'd cars.
In terms of feel, it feels solid, bites hard and yes it's not light! Its not super heavy either, but I wouldn't fancy it as a daily in traffic or situations that require lots of parking manoeuvres regularly.

Capri_Ghia

64 posts

78 months

Monday 19th September 2022
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I had the LS7 clutch kit fitted to my otherwise standard '04 CV8 about 4 years ago by Walkinshaw Performance.

Whilst everything was off the prop shaft centre bearing was replaced (it was in peices !!) and also the gearbox mount as it had split.

The LS7 clutch is great in daily use - I've done 50k miles with it since and I can't say it feels much different to the original clutch in terms of weight IMHO.

The flywheel is definitely heavier though. The engine does not rev quite as freely as it did. Not an issue for normal road driving, I got used to it almost immediately. If you're going for maximum performance maybe try a lighter one thpugh.

Enjoy the LS7 clutch.

dazvxr

97 posts

51 months

Monday 19th September 2022
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Lincsls1 said:
There's nothing wrong with putting a stock clutch back in. Lets be fair, its lasted this long. Don't really know why I had the LS7 fitted, other than I considered it an upgrade and have dreams of cam/head/intake packages, but in reality I'm sure the stock clutch would handle the modest power that would increase by. Probably only required for S/C'd cars.
In terms of feel, it feels solid, bites hard and yes it's not light! Its not super heavy either, but I wouldn't fancy it as a daily in traffic or situations that require lots of parking manoeuvres regularly.
Mines still on original clutch, nearly 70k on her now I think, it's running heads, cam etc etc no sign of slip as yet biggrin

dazvxr

97 posts

51 months

Monday 19th September 2022
quotequote all
Lincsls1 said:
There's nothing wrong with putting a stock clutch back in. Lets be fair, its lasted this long. Don't really know why I had the LS7 fitted, other than I considered it an upgrade and have dreams of cam/head/intake packages, but in reality I'm sure the stock clutch would handle the modest power that would increase by. Probably only required for S/C'd cars.
In terms of feel, it feels solid, bites hard and yes it's not light! Its not super heavy either, but I wouldn't fancy it as a daily in traffic or situations that require lots of parking manoeuvres regularly.
Mines still on original clutch, nearly 70k on her now I think, it's running heads, cam etc etc no sign of slip as yet biggrin

Edited by dazvxr on Monday 19th September 15:17

Lincsls1

3,415 posts

146 months

Monday 19th September 2022
quotequote all
^^^ Love the spec of your car dazvxr, seems a big cam for an LS1 though. How does it feel and behave compared to stock?

SturdyHSV

10,206 posts

173 months

Tuesday 20th September 2022
quotequote all
Can you even buy a stock clutch to put in? hehe

The only issues with the stock clutch is with a few 'hard' (high rpm) shifts you can have the pedal stick down, seems to be more related to clutch dust getting into the clutch fluid though, regularly cleaning of that will keep it in good shape.

I had an LS7 in mine with that fidanza flywheel, it's by no means a 'light' flywheel in terms of it impacting driveability in any way, you're not going to suddenly be stalling a 6 litre V8 with a 25kg crankshaft because you've lost a couple of kg from the flywheel smile It held up to a significant amount of abuse, lots of aggressive starts, loads of high rpm shifts, loads of clutch dumps for burnouts and so on, and when it came out it was in good enough shape that I sold it to another Monaro VXR who is using it now.

Wildly off topic, but:

In terms of putting a 236/238 on 113 cam in a 5.7, with 11 degrees of overlap at 0.050" it'll have a bloody excellent idle, but heads or not, unless he's revving it to 7500+ it's not optimal really, it's going to be giving up a lot of torque without the top end gain it's targeted for and isn't going to be a lot of fun at anything approaching normal driving (in my opinion)

For reference, my old cam, a 228/231 on 111 LSA with similar ~0.600" lift, is now in a 6.0 VXR, which tuned by Luis at SRR with standard heads / intake made 404rwhp, so over 500 flywheel... Still has a great idle but would have much better manners.

As additional reference, my 402 has a 237/241 on 113 cam makes peak power at 7,000rpm and does not have good manners (yet, some more tuning will likely help...). Given that additional displacement helps 'tame' a cam and lowers the RPM of peak power etc. you can see how big Daz's cam is for a 5.7 (50 less cubes)

fred bloggs

1,340 posts

206 months

Wednesday 21st September 2022
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I was lucky enough to score an ACT twin plate with a lightened fly and two new plates for an auction for £300. I used a new slave without the remote bleed. Its been in 4+ years.

dazvxr

97 posts

51 months

Thursday 22nd September 2022
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Lincsls1 said:
^^^ Love the spec of your car dazvxr, seems a big cam for an LS1 though. How does it feel and behave compared to stock?
I've never driven a stock one, but if what I've been told about the cam is true and how it 'should' behave as being pretty awful, it causes me no issues to use daily tbh, yes it can be a bit lumpy, but the 3rd and 4th gear pull is fun. It'll happily sit on cruise at 70 in top so no probs rotate