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Home > Technical Chat > Lightweight flywheel - Yay or Nay

Turbonator

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52 Posts
Member #: 11169
AKA: Smegmium

Derby, ish

Morning all
I've not fitted a lightweight flywheel before so am just wondering what people's opinions are on running one on a road car?

Pros: faster windup/down and slightly better engine braking.
Cons: slight loss of low-end torque.

(1310, 8.2:1 CR, Phase2, 3.2:1 FD)

Edited by Turbonator on 9th Feb, 2016.

"If its not broke, whack a turbo on it"

https://www.youtube.com/c/turbominitv


John

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10020 Posts
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Mongo

Barnsley, South Flatcapshire

I used to be all for it, but TBH if I could be bothered I'd go back to a full weight cast item on mine!

If something is worth doing, it's worth doing half of.


Turbonator

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52 Posts
Member #: 11169
AKA: Smegmium

Derby, ish

Really? do tell...!?

"If its not broke, whack a turbo on it"

https://www.youtube.com/c/turbominitv


Rob Gavin

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Glasgow

I ran a steel lightweight pre-verto flywheel on mine for a short while and loved the pick-up on it but ended up going to a standard verto when I fitted the RTS to save the thrusts.

There is a fair bit of discussion on the subject with many considering the standard flywheel better for turbo (road) use. Personally, if you've not already bought it, I'd spend more time on building an RTS setup.


John

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Mongo

Barnsley, South Flatcapshire

I just found that the car pulled away easier with the heavier flywheel, engine felt smoother and generally just improved road manners.

If something is worth doing, it's worth doing half of.


Turbonator

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52 Posts
Member #: 11169
AKA: Smegmium

Derby, ish

Thanks Rob / John, fair enough - I'll stick with the standard for now then.

I imagine it would make it a bugger around town too.

Edited by Turbonator on 9th Feb, 2016.

"If its not broke, whack a turbo on it"

https://www.youtube.com/c/turbominitv


John

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Mongo

Barnsley, South Flatcapshire

If you don't mind revving it a bit harder and slipping the clutch a bit to get moving then it's not going to be an issue.

If you run a standard helical gearset too the short 1st gear will negate some of the effects.

I just found with a SC box, 3.1/3.2 FD and a light flywheel that pulling away was somewhat harder.

If something is worth doing, it's worth doing half of.


Brett

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Doncaster, South Yorkshire

I had the mini spares light weight one
Never had any issues
Infact when i had it all balanced it was the only part that didnt need anything taking off it

Yes i moved to the darkside *happy*

Instagram @jdm_brett


John

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Mongo

Barnsley, South Flatcapshire

I have the same Brett. It's probably not a bad compromise, if I can sort my fuelling out on pull-away it will probably be much better, when last on the road I used to get a big lean-out.

If something is worth doing, it's worth doing half of.


Brett

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Doncaster, South Yorkshire

We can sort that one day

Yes i moved to the darkside *happy*

Instagram @jdm_brett


BENROSS

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Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

yes in my book, but do get all the rotating assembly ballanced it makes for a very smooth loveable engine and a pleasure to drive ................ worth ever penny spent






jonny f

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Dorking

I haven't noticed much difference going from a standard slightly lightened verto to the MED lightweight one.

Although compared to a lightweight pre verto setup a verto lightweight setup weighs a ton.


D4VE

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lowestoft suffolk




On 10th Feb, 2016 jonny f said:


Although compared to a lightweight pre verto setup a verto lightweight setup weighs a ton.


Interesting

On 24th Oct, 2015 jonny f said:
Nothing gets past Dave lol

NOTHING GETS PAST ME!! *tongue*

1/4 mile 14.7 @ 96mph 12psi boost
Showdown class A 2nd place 18.6 @ 69mph


Turbonator

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52 Posts
Member #: 11169
AKA: Smegmium

Derby, ish

OK thanks for your input guys!
Decision made:
I'm going to do this build with... (Drum-roll)

The standard flywheel.

Might change it later, but seems a bit pointless for a road build.

"If its not broke, whack a turbo on it"

https://www.youtube.com/c/turbominitv


jonny f

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Dorking

RTS verto?


John

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Mongo

Barnsley, South Flatcapshire

Your engine spec will be more than capable of overwhelming even the strongest of standard Verto clutches so you ought to look into an RTS.

If something is worth doing, it's worth doing half of.


steve1275

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Bromsgrove

I just changed back to a standard fw to help the turbo spool off the start line. I agree with Steve about balancing though.

'Where does the engine go?'

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