Is it possible to lighten the flywheel?
-
- Posts: 283
- Joined: 07 Apr 2008 12:40 pm
- Location: Macclesfield/Chester
Is it possible to lighten the flywheel?
the title pretty much says it all, im after adding a bike of poke to my 1.7
1987 Volvo 340 1.7
If you do, make sure it goes somewhere with lots of experience. I have nightmares looking at some of the milled bodges on flywheels, and seen enough pictures of punctured transmission tunnels to scar me
Can't think of any that are lighter as stock either
Can't think of any that are lighter as stock either
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
-
- Posts: 358
- Joined: 24 Jan 2007 07:53 pm
There are also so called flat flywheels for these engines but those won't work with Renix so you'd need to use some other ignition. Flat flywheel weights about 9kg as the dished one weights about 13kg. Flat flywheels can be found from B19,B21, and B23 engines. B2x0-series has the dished flywheel. (And ones with the M90 gearbox have double mass flywheel)
It's not much difference in kg's but the differnece is noticeable. Engines with dished one have more sluggish feeling when the rpm's rise if compared to an engine with the flat flywheel.
Of course for those who want something really light and also safe, with few hundred euros you can also get something like this
http://i26.photobucket.com/albums/c140/ ... uva041.jpg
(That's a PO-Metal flywheel from Finland, full steel billet piece, ~500euros)
It's not much difference in kg's but the differnece is noticeable. Engines with dished one have more sluggish feeling when the rpm's rise if compared to an engine with the flat flywheel.
Of course for those who want something really light and also safe, with few hundred euros you can also get something like this
http://i26.photobucket.com/albums/c140/ ... uva041.jpg
(That's a PO-Metal flywheel from Finland, full steel billet piece, ~500euros)
Last edited by Fuse on 07 Oct 2008 10:23 pm, edited 1 time in total.
Volvo R-Sport - Equipment for the car enthusiast.
“Buy land, they're not making it anymore” - Mark Twain
"There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games." -Ernest Hemingway
“Buy land, they're not making it anymore” - Mark Twain
"There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games." -Ernest Hemingway
Weight is not same as inertia and inertia is what one likes to remove when lightening flywheel.
Take 5kg weight swing it around arm straight, then try to stop motion, now do same by turning only your wrist, weight is same, inertia is different.
Reducing inertia is done best by removing material from edge of flywheel, with Renix flywheel that means indeed loosing renix holes and need for new ignition setup.
Take 5kg weight swing it around arm straight, then try to stop motion, now do same by turning only your wrist, weight is same, inertia is different.
Reducing inertia is done best by removing material from edge of flywheel, with Renix flywheel that means indeed loosing renix holes and need for new ignition setup.
But question is can it be made lighter, well it should be is it possible to reduce inertia of flywheel and certainly it is possible, but it comes with cost naturally.SteveP wrote:I think the original poster is talking about the 1.7 engine, rather than the Redblocks. I thought the 1.7 flywheel was probably the lightest of the range?
Some good low inertia flywheel:
-
- Posts: 283
- Joined: 07 Apr 2008 12:40 pm
- Location: Macclesfield/Chester
-
- *** V3M DONOR ***
- Posts: 5461
- Joined: 25 Apr 2005 06:52 pm
- Location: Anglesey North Wales
- Contact:
Just bolts on as a direct swap.No need for any machining etc. Only any point doing that combined with other mods tbh
Dai
Please email me directly on dai@classicswede.co.uk
http://www.classicswede.com
phone/text 07824887160
Web shop http://www.classicswede.co.uk/
Please email me directly on dai@classicswede.co.uk
http://www.classicswede.com
phone/text 07824887160
Web shop http://www.classicswede.co.uk/