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202 harmonics problem

Started by _70rey_ , Mar 15 2010 08:13 PM

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#76 _70rey_

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Posted 31 March 2010 - 08:46 PM

thanks for the info guys.... well worth a thought.

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#77 nzxu1

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Posted 02 April 2010 - 03:42 PM

HAHAHA old johno , if the flywheel fell off just short of 9000 rpm , l wonder if the driver still has his ankles ? or his knees even lol

Jeez you're a bloody sceptical lot. I've managed to get a hold of the dyno sheet and you can clearly see where the harmonics start to set in..

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#78 _82911_

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Posted 03 April 2010 - 07:54 PM

half grout fill the block = problem solved.

Cheers Greg..

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#79 Peter UC

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Posted 04 April 2010 - 03:58 PM

Good to see you back Greg :spoton:

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#80 turbotrana

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Posted 04 April 2010 - 05:28 PM

Gee, after all these years I did not realise that the blue/black crank is not fully counterbalanced like the RB cranks. Those RB motors are so smooth.

I have a Massey Ferguson Balancer setup for a 202 bought years ago but never used. Sorry cant give pictures as I have lost my camera but anyone in Perth is welcome to come around if interested. Should be worth $150 and sorry, I am not posting, only pickup.

Edited by turbotrana, 04 April 2010 - 05:29 PM.

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#81 greens nice

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Posted 04 April 2010 - 05:47 PM

Gee, after all these years I did not realise that the blue/black crank is not fully counterbalanced like the RB cranks. Those RB motors are so smooth.

I have a Massey Ferguson Balancer setup for a 202 bought years ago but never used. Sorry cant give pictures as I have lost my camera but anyone in Perth is welcome to come around if interested. Should be worth $150 and sorry, I am not posting, only pickup.

can i ask why you wont post? ill give u $200 for it right now if u post Posted Image

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#82 _clubspClubsportr8ortr8_

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Posted 04 April 2010 - 06:12 PM

Thats it Kevin but i would give $250 plus post as you know how much a new Romac will set you back.

Jeff

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#83 Heath

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Posted 04 April 2010 - 06:46 PM

I absolutely cannot believe that no one is disagreeing with that suggestion :Headbang2:

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#84 _Bomber Watson_

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Posted 04 April 2010 - 06:57 PM

What exactly Heath??

I assume Greg ment that half grout filling the block will help stop the flywheels from coming off, not that it fixes the inherent problems of the crank design.....

If you mean the balancer...Yeah well i cant really see what thats gonna fix either but as i said with the torque converter thing it might also band aid the problem enough to work.

Cheers.

Edited by Bomber Watson, 04 April 2010 - 06:59 PM.

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#85 Heath

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Posted 04 April 2010 - 07:09 PM

The power that harmonic is stealing is the frOcking problem, not the flywheel falling off

If you want to stop the flywheel falling off, stop tightening small hex'd nuts up against material that is (relatively) soft. Make up a single donut type washer out of something HARD like chromoly, and get some bolts that have a decent contact area (massive hex), and it'll hold the two dowels you should have in too.

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#86 _Bomber Watson_

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Posted 04 April 2010 - 07:21 PM

Thats not a bad idea, after you build a standard cranked engine that can rev past 7000 try it for me

.

Or i might try it first...

Cheers.

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#87 greens nice

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Posted 04 April 2010 - 07:29 PM

The power that harmonic is stealing is the frOcking problem, not the flywheel falling off

If you want to stop the flywheel falling off, stop tightening small hex'd nuts up against material that is (relatively) soft. Make up a single donut type washer out of something HARD like chromoly, and get some bolts that have a decent contact area (massive hex), and it'll hold the two dowels you should have in too.

i disagree, it might help but its not the solution, i reckon its a waste of time.
how many sbc's shake flywheels? i beleive the problem is elsewhere.

also, yella terra flywheels arent soft.

i will keep everyone posted about this cosworth groove i talked about, 10+ people have said it fixed their flywheel problem, so heres hoping. but if not, crank is getting crack tested.

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#88 Heath

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Posted 04 April 2010 - 08:23 PM

The solution is to get rid of the harmonics so you don't need to hold the flywheel on better!

And Yella Terra flywheels might not be soft but they're softer than some case hardened chromoly mate

Edited by Heath, 04 April 2010 - 08:30 PM.

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#89 _oldjohnno_

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Posted 04 April 2010 - 09:07 PM

If you want to stop the flywheel falling off, stop tightening small hex'd nuts up against material that is (relatively) soft. Make up a single donut type washer out of something HARD like chromoly, and get some bolts that have a decent contact area (massive hex), and it'll hold the two dowels you should have in too.

I agree that using a hard plate is good practice Heath. Most if not all of the engines I work on (mining/construction diesels) use such a thing; it's called a scuff plate and yes it's hard. Even so, the scuff plate and the bolts are replaced every time the flywheel is removed.

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#90 turbotrana

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Posted 05 April 2010 - 01:51 PM

I have done a deal with the Massey Balancer.

Why I didn't want to post. I would rather have a chat with someone face to face for an hour for 150 than spend time packaging and posting which will prob take 45min by the time I go to the post office. The extra the buyer paid will cover lost time.

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#91 Heath

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Posted 05 April 2010 - 06:52 PM

Whoever bought that balancer, please speak up? I think it would be quite interesting to see photos of it before and after it is re-installed on a vehicle.