ausmini :: View topic - Engine Balancing

I have had my engine balanced when I first built it

The rubber in the Harmonic Balancer is a little preished and I want to get the balancer rebuilt.
It may look perished outside but looks are deceiving. Trim it flush with a razor blade then take another look.

I was wondering if this would change the over balance of the engine or would things be ok if the balancer is re balanced again.
It will be OK, the balancer (misnamed item if ever there was one- should be called a harmonic damper) is/should be rebalanced by whoever rebuilds it.

and can you change say a single conrod and be ok if its the same weight with out re balancing the whole engine again.
Sure can, no problem.
My 1412 stroker has 3x rods out of a busted Melburnian 1275, and a 4th one I got from GR. But yeah I balanced them the same within 1gm.

Thoughts would be appreciated

Kiwiinwgtn

The rubber in the Harmonic Balancer is a little preished and I want to get the balancer rebuilt.

kiwiinwgtn wrote:

The rubber in the Harmonic Balancer is a little preished and I want to get the balancer rebuilt.

Hey, if you remember can you let me know if you ever find out a local price/supplier for a rebuild? Been meaning to get to that job for ages but have never got off my butt to compare a retread to buying new.

Oh and didn't see you up here on the weekend....or if you were there I completely missed you!

smac wrote:

kiwiinwgtn wrote:

The rubber in the Harmonic Balancer is a little preished and I want to get the balancer rebuilt.

might cost you a bit extra, but you can post them to "Ross Performance Engine Parts" in Sydney. $180 a couple of years ago

maybe not cheaper than buying a newie, but maybe you don't want a newie

Author:	kiwiinwgtn [ Sat Oct 29, 2011 8:35 pm ]
Post subject:	Engine Balancing
I have had my engine balanced when I first built it The rubber in the Harmonic Balancer is a little preished and I want to get the balancer rebuilt. I was wondering if this would change the over balance of the engine or would things be ok if the balancer is re balanced again and can you change say a single conrod and be ok if its the same weight with out re balancing the whole engine again Thoughts would be appreciated Kiwiinwgtn

Author:	drmini in aust [ Sat Oct 29, 2011 8:42 pm ]
Post subject:	Re: Engine Balancing
kiwiinwgtn wrote: I have had my engine balanced when I first built it The rubber in the Harmonic Balancer is a little preished and I want to get the balancer rebuilt. It may look perished outside but looks are deceiving. Trim it flush with a razor blade then take another look. I was wondering if this would change the over balance of the engine or would things be ok if the balancer is re balanced again. It will be OK, the balancer (misnamed item if ever there was one- should be called a harmonic damper) is/should be rebalanced by whoever rebuilds it. and can you change say a single conrod and be ok if its the same weight with out re balancing the whole engine again. Sure can, no problem. My 1412 stroker has 3x rods out of a busted Melburnian 1275, and a 4th one I got from GR. But yeah I balanced them the same within 1gm. Thoughts would be appreciated Kiwiinwgtn

Author:	smac [ Sun Oct 30, 2011 5:38 am ]
Post subject:	Re: Engine Balancing
kiwiinwgtn wrote: The rubber in the Harmonic Balancer is a little preished and I want to get the balancer rebuilt. Hey, if you remember can you let me know if you ever find out a local price/supplier for a rebuild? Been meaning to get to that job for ages but have never got off my butt to compare a retread to buying new. Oh and didn't see you up here on the weekend....or if you were there I completely missed you!

Author:	simon k [ Sun Oct 30, 2011 9:00 am ]
Post subject:	Re: Engine Balancing
smac wrote: kiwiinwgtn wrote: The rubber in the Harmonic Balancer is a little preished and I want to get the balancer rebuilt. Hey, if you remember can you let me know if you ever find out a local price/supplier for a rebuild? Been meaning to get to that job for ages but have never got off my butt to compare a retread to buying new. Oh and didn't see you up here on the weekend....or if you were there I completely missed you! might cost you a bit extra, but you can post them to "Ross Performance Engine Parts" in Sydney. $180 a couple of years ago maybe not cheaper than buying a newie, but maybe you don't want a newie

Author:	drmini in aust [ Sun Oct 30, 2011 7:23 pm ]
Post subject:	Re: Engine Balancing
simon k wrote: smac wrote: kiwiinwgtn wrote: The rubber in the Harmonic Balancer is a little preished and I want to get the balancer rebuilt. Hey, if you remember can you let me know if you ever find out a local price/supplier for a rebuild? Been meaning to get to that job for ages but have never got off my butt to compare a retread to buying new. Oh and didn't see you up here on the weekend....or if you were there I completely missed you! might cost you a bit extra, but you can post them to "Ross Performance Engine Parts" in Sydney. $180 a couple of years ago maybe not cheaper than buying a newie, but maybe you don't want a newie Watch what you buy new. People on here and others on track have had trouble with Romac balancers, they can self destruct.. Minis Plus has nice blingy MED ones, I use one on my 1412 and many people (GR included) race with them. http://www.minis.com.au/minis/catalog/p ... cts_id=912

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Engine Balancing https://www.ausmini.com/forums/viewtopic.php?f=2&t=73805	Page 1 of 1

Author:	kiwiinwgtn [ Tue Nov 01, 2011 7:25 pm ]
Post subject:
Thanks for the replys There is guy in Nz who repairs them Harmonic Damper Rebuilds Ltd. I have not used him personally but his feedback is good. I may go the MED path as its only a little more exspensive. Didn't make it to Hastings Labour Weekend does not work for us as we plant our organoic garden over that weekend otherwise we have no fresh veges for the summer Sounds like it was good event Ta Bernard

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