exploding flywheels

POE · Post by **POE** » Mon Apr 13, 2009 11:14 am

when i did my clutch a while ago i noticed the flywheel had small lines radiating from centre and now i am thinking these could be stress fractures ,has anybody else come across this as i have a few stories about exploding flywheels ,even mentioned by rpruen ,i hope to use volvo next month but a bit wary now .89 turbo with richmod.

felyx · Post by **felyx** » Wed Apr 15, 2009 8:11 am

you can get your flywheel skimmed by 1mm for about 20 quid at any engineering shop , this may help. you could also have it treated by chilling it down to minus185degress celcius which would make it maybe 15% stronger.

cheers felyx

POE · Post by **POE** » Wed Apr 15, 2009 9:33 am

i assume these are surface cracks ,whats the chances of these developing into something a bit more sinister ,i will be taking gearbox off after summer and get the flywheel fixed,but until then then im hoping to run about in it ,hopefully im looking into this too much.

felyx · Post by **felyx** » Wed Apr 15, 2009 11:49 am

i wouldn't worry maTE REALLY just drive , i could be wrong but on this forum mostly the only thing that disintergrates is very voerloaded pistons without enough feul , i have done that twice and even rich aka richmod has once etc.

cheers felyx

POE · Post by **POE** » Wed Apr 15, 2009 1:29 pm

thanks a lot matey,i feel quite relieved now

dave r5 · Post by **dave r5** » Wed Apr 15, 2009 4:21 pm

at wich point do the piston explode.

i hit 32 psi at donnington at the weekend.

only thing to break was the clutch grrgrr

martinholmesuk · Post by **martinholmesuk** » Wed Apr 15, 2009 4:29 pm

25psi for me but only went it went LEAN!

martinholmesuk · Post by **martinholmesuk** » Thu Apr 16, 2009 2:51 pm

Hope it's not cracked. How does removing steel help it ?

POE · Post by **POE** » Thu Apr 16, 2009 5:41 pm

i bet that hurt,what the chances of the flywheel coming through the bulkhead? i hope its none at all

martinholmesuk · Post by **martinholmesuk** » Thu Apr 16, 2009 9:46 pm

high on a fwd car. Think how fast it spins!

POE · Post by **POE** » Fri Apr 17, 2009 7:59 am

well.ill have to wear an extra pair of socks just in case

martinholmesuk · Post by **martinholmesuk** » Fri Apr 17, 2009 8:48 am

Get some of this!

POE · Post by **POE** » Sat Apr 18, 2009 1:13 pm

i think ill let the wife drive and ill sit in the back

Rapid-R5 · Post by **Rapid-R5** » Fri May 22, 2009 10:39 pm

They just on the surface matey, i've had mine skimmed flat, they disapear.

steve

outlawmorga · Post by **outlawmorga** » Mon Nov 23, 2009 7:42 pm

felyx wrote:you can get your flywheel skimmed by 1mm for about 20 quid at any engineering shop , this may help. you could also have it treated by chilling it down to minus185degress celcius which would make it maybe 15% stronger.

cheers felyx

No to make any forms of metal stronger you heat the metal to a certain degree depending on metal e.g. mild steel 800 degrees then what ever the rate of cooling will determine how strong it is be wary the faster you cool the harder it will become but it would be more britlle. Works on the princible of placing and removing carbon.