Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: ngrainqey on 20 November 2008, 20:59:36

Title: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 20:59:36
hiya,
just (trying to be) a quicky on flywheels..
is there any difference in weight between the 2.5 and 3.0 flywheels and also does anybody know if it's possible just to remachine the standard flywheel (i have a spare) or just buy an alloy is it? performance one off courtney (remachining is free)
thanks
Title: Re: v6 flywheels...
Post by: cem_devecioglu on 20 November 2008, 21:05:45
I remember some lighter ones special for miggy on e-bay..
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 21:06:41
Quote
I remember some lighter ones special for miggy on e-bay..

can you remember how much they were roughly?
thanks
Title: Re: v6 flywheels...
Post by: cem_devecioglu on 20 November 2008, 21:09:04
Quote
Quote
I remember some lighter ones special for miggy on e-bay..

can you remember how much they were roughly?
thanks
more than 100£ , all I remember sorry :-[
Title: Re: v6 flywheels...
Post by: Ian_D on 20 November 2008, 21:12:42
How much different are they from a Vectra Flywheel? I know that you can get lightened flywheels for them, and I Seem to think there were about 300 and odd quid. (going back about 10-12 months)
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 21:13:03
lol thanks anyway, i looked and cant see any 6 stud/vx flywheels suitable :(

what about heads and performance valves?
Title: Re: v6 flywheels...
Post by: Ian_D on 20 November 2008, 21:14:27
Here we go... Found it:
http://www.courtenaysport.co.uk/index.php?act=viewProd&productId=29

HTH!
Title: Re: v6 flywheels...
Post by: Ian_D on 20 November 2008, 21:15:45
Quote
lol thanks anyway, i looked and cant see any 6 stud/vx flywheels suitable :(

what about heads and performance valves?

I've read loads of times that the exhuast manifolds are the biggest restriction on the v6 lumps!
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 21:17:20
Quote
Quote
lol thanks anyway, i looked and cant see any 6 stud/vx flywheels suitable :(

what about heads and performance valves?

I've read loads of times that the exhuast manifolds are the biggest restriction on the v6 lumps!

lol thats why im on about reboring them matey ;)
apparently matching the ports between head and exhaust helps alot!

i'v had a nosey at the courtneysport flywheels, i have a spare flywheel so thought why just not remachine it :P
Title: Re: v6 flywheels...
Post by: Ian_D on 20 November 2008, 21:20:44
Quote
Quote
Quote
lol thanks anyway, i looked and cant see any 6 stud/vx flywheels suitable :(

what about heads and performance valves?

I've read loads of times that the exhuast manifolds are the biggest restriction on the v6 lumps!

lol thats why im on about reboring them matey ;)
apparently matching the ports between head and exhaust helps alot!

i'v had a nosey at the courtneysport flywheels, i have a spare flywheel so thought why just not remachine it :P

Hmm, Without seeing a flywheel off an omega up close its hard to say... But I guess you could loose a couple of KG's, however you dont really want to go too crazy!

A shattered Flywheel WILL make a horrid mess!  ;D
Title: Re: v6 flywheels...
Post by: albitz on 20 November 2008, 21:20:47
I have never undersrood the benifits of a lightened flywheel :-/
(apart from when the box is in neutral)
Title: Re: v6 flywheels...
Post by: cem_devecioglu on 20 November 2008, 21:24:45
Quote
I have never undersrood the benifits of a lightened flywheel :-/
(apart from when the box is in neutral)

when revving up the mass of flywheel is important even the weight

of tires..I read something about those on tuning pages..
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 21:25:03
lol takes less time for the engine speed to increase so is more revvy/or revs more freely!

side effect can be that you lose speed easily up steep inclines
Title: Re: v6 flywheels...
Post by: Marks DTM Calib on 20 November 2008, 21:25:03
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!
Title: Re: v6 flywheels...
Post by: albitz on 20 November 2008, 21:27:15
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!
Im not quite as thick as I thought I was then. :y ::) ;D ;D
Having said that I did spell understood wrongly  :-[ ;D
Title: Re: v6 flywheels...
Post by: Ian_D on 20 November 2008, 21:28:19
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!

I wondered if that was the case after I posted the above comment! Learn something new everyday :y
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 21:28:54
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!

riiight.... what about opening up the ports to the exhaust manifold and matching the bore in the manifold? (obv would need sports exhaust etc to get benefit)
Title: Re: v6 flywheels...
Post by: Ian_D on 20 November 2008, 21:30:00
Quote
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!

riiight.... what about opening up the ports to the exhaust manifold and matching the bore in the manifold? (obv would need sports exhaust etc to get benefit)

Stick a supercharged V8 in there and have done with it!  ;D ;D ;D ;D
Title: Re: v6 flywheels...
Post by: markey mark on 20 November 2008, 21:30:29
Quote
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!

riiight.... what about opening up the ports to the exhaust manifold and matching the bore in the manifold? (obv would need sports exhaust etc to get benefit)

tubelar manifolds alex then match ports  :y
Title: Re: v6 flywheels...
Post by: Marks DTM Calib on 20 November 2008, 21:31:22
Quote
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!

riiight.... what about opening up the ports to the exhaust manifold and matching the bore in the manifold? (obv would need sports exhaust etc to get benefit)

Interestingly, the 2.6 and 3.2 manifolds seem better.

When I have Mick Dundees car on a long term stay and fix programme ina few weeks we shall see just how much better they are.
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 21:31:38
Quote
Quote
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!

riiight.... what about opening up the ports to the exhaust manifold and matching the bore in the manifold? (obv would need sports exhaust etc to get benefit)

Stick a supercharged V8 in there and have done with it!  ;D ;D ;D ;D

lol i'm going to invest time money and patience in a v8 omega project but not this minute
i want to work upto a big project like that haha!
i'v thought about a twin turbo project :P but need to be arsed to buy two t25 garret turbos haha!
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 21:35:33
oh yeah... from looking at a flywheel on the omega it looks rather like just a solid plate with six bolt holes in the centre and 6 mountings for the torque convertor
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 21:36:12
Quote
Quote
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!

riiight.... what about opening up the ports to the exhaust manifold and matching the bore in the manifold? (obv would need sports exhaust etc to get benefit)

tubelar manifolds alex then match ports  :y

where from markey?
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 21:36:50
Quote
Quote
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!

riiight.... what about opening up the ports to the exhaust manifold and matching the bore in the manifold? (obv would need sports exhaust etc to get benefit)

Interestingly, the 2.6 and 3.2 manifolds seem better.

When I have Mick Dundees car on a long term stay and fix programme ina few weeks we shall see just how much better they are.

let me know what happens with that mark, might have to buy some depending what happens with tubular manifolds lol
Title: Re: v6 flywheels...
Post by: markey mark on 20 November 2008, 21:37:10
Quote
Quote
Quote
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!

riiight.... what about opening up the ports to the exhaust manifold and matching the bore in the manifold? (obv would need sports exhaust etc to get benefit)

tubelar manifolds alex then match ports  :y

where from markey?

not sure mate  :-[
Title: Re: v6 flywheels...
Post by: cem_devecioglu on 20 November 2008, 21:38:00
buy something like
(http://i181.photobucket.com/albums/x80/mecdv6/coolanthose.jpg)

will do the job..
Title: Re: v6 flywheels...
Post by: Ian_D on 20 November 2008, 21:38:15
Quote
Quote
Quote
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!

riiight.... what about opening up the ports to the exhaust manifold and matching the bore in the manifold? (obv would need sports exhaust etc to get benefit)

Stick a supercharged V8 in there and have done with it!  ;D ;D ;D ;D

lol i'm going to invest time money and patience in a v8 omega project but not this minute
i want to work upto a big project like that haha!
i'v thought about a twin turbo project :P but need to be arsed to buy two t25 garret turbos haha!

Where can I find T25's cheap???  ::)
Title: Re: v6 flywheels...
Post by: TheBoy on 20 November 2008, 21:38:22
Quote
oh yeah... from looking at a flywheel on the omega it looks rather like just a solid plate with six bolt holes in the centre and 6 mountings for the torque convertor
LOL, if its an auto, no flywheel!
Title: Re: v6 flywheels...
Post by: Ian_D on 20 November 2008, 21:38:56
Quote
buy something like
(http://i181.photobucket.com/albums/x80/mecdv6/coolanthose.jpg)

will do the job..
Engine Porn!  ;D ;D ;D ;D
Title: Re: v6 flywheels...
Post by: Marks DTM Calib on 20 November 2008, 21:39:06
Quote
oh yeah... from looking at a flywheel on the omega it looks rather like just a solid plate with six bolt holes in the centre and 6 mountings for the torque convertor


You wont get the flywheel any lighter on an auto....as its a flex plate.....they rely on the torque converter weight.
Title: Re: v6 flywheels...
Post by: cem_devecioglu on 20 November 2008, 21:39:08
Quote
Quote
oh yeah... from looking at a flywheel on the omega it looks rather like just a solid plate with six bolt holes in the centre and 6 mountings for the torque convertor
LOL, if its an auto, no flywheel!

 ;D

yep..a small detail..
Title: Re: v6 flywheels...
Post by: cem_devecioglu on 20 November 2008, 21:40:00
Quote
Quote
buy something like
(http://i181.photobucket.com/albums/x80/mecdv6/coolanthose.jpg)

will do the job..
Engine Porn!  ;D ;D ;D ;D

some like it different ;D :y
Title: Re: v6 flywheels...
Post by: Ian_D on 20 November 2008, 21:41:29
Quote
Quote
oh yeah... from looking at a flywheel on the omega it looks rather like just a solid plate with six bolt holes in the centre and 6 mountings for the torque convertor
LOL, if its an auto, no flywheel!
I thought that!  ;D

How heavy is the torque convertor? Im sure my Auto Omega revs up quicker than my Man 2.5 Vectra gsi  :-/
Title: Re: v6 flywheels...
Post by: tmx on 20 November 2008, 21:43:02
its a DMF flywheel so it cant be lightened can it???

MV6's is DMF anyway i assume they all are
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 22:00:17
Quote
Quote
Quote
Quote
Quote
Correct....a lightened flywheel only help an engien on a dyno........when connected to a gearbox, prop, read diff and then a 1.7 ton car....they make break all difference!

Plus, you wont take any weight off an Omega flywheel as its a complex multi piece dual mass setup!

As for the exhaust maniofld to head matching....they are already matched!

riiight.... what about opening up the ports to the exhaust manifold and matching the bore in the manifold? (obv would need sports exhaust etc to get benefit)

Stick a supercharged V8 in there and have done with it!  ;D ;D ;D ;D

lol i'm going to invest time money and patience in a v8 omega project but not this minute
i want to work upto a big project like that haha!
i'v thought about a twin turbo project :P but need to be arsed to buy two t25 garret turbos haha!

Where can I find T25's cheap???  ::)

go on uksaabs.co.uk i think or .com
all the 9000 turbos have t25's... probs just need new bearings haha!
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 22:03:02
might do away with the multiram, get an induction kit then bolt two t25's on :P
just have to find the right head spacer plates haha!
think it'll want the 2mm ones (and yes i'v been asking about to do with turboing the omega) apparently you need a piggyback or standalone ecu for the fueling
Title: Re: v6 flywheels...
Post by: cem_devecioglu on 20 November 2008, 22:10:19
Quote
might do away with the multiram, get an induction kit then bolt two t25's on :P
just have to find the right head spacer plates haha!
think it'll want the 2mm ones (and yes i'v been asking about to do with turboing the omega) apparently you need a piggyback or standalone ecu for the fueling

if you dont decrease the compression ratio and arrange the pressure of turbo I think you cant reach even 4500 RPM :-/

and the last thing you hear will be a bang!
Title: Re: v6 flywheels...
Post by: TheBoy on 20 November 2008, 22:15:08
Quote
might do away with the multiram, get an induction kit then bolt two t25's on :P
just have to find the right head spacer plates haha!
think it'll want the 2mm ones (and yes i'v been asking about to do with turboing the omega) apparently you need a piggyback or standalone ecu for the fueling
Check the engine is strong enough - seem to remember its not.  I think the 3.2 has steel crank, that may help
Title: Re: v6 flywheels...
Post by: Ian_D on 20 November 2008, 22:16:58
Quote
Quote
might do away with the multiram, get an induction kit then bolt two t25's on :P
just have to find the right head spacer plates haha!
think it'll want the 2mm ones (and yes i'v been asking about to do with turboing the omega) apparently you need a piggyback or standalone ecu for the fueling

if you dont decrease the compression ratio and arrange the pressure of turbo I think you cant reach even 4500 RPM :-/

and the last thing you hear will be a bang!

Oh Dear, Oh Dear, Oh Dear.... Whys everything have to be complicated  :'(
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 22:23:14
the turbos are fine at 6psi with standard mapping...but could do with mapping better..
and it's called engine lockup :P
it's fine aslong as the comp ratio isnt too high so need some spacer plates unless i just intend on using it upto 6psi (which i dont if i do it right :P )
Title: Re: v6 flywheels...
Post by: ngrainqey on 20 November 2008, 22:26:00
..right bed time!
cya later
Title: Re: v6 flywheels...
Post by: albitz on 20 November 2008, 22:29:52
Dream of little flywheels and big turbos. :y ;D ;D