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Dominator 88

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Dominator 88

Posted by keith_king at January 30. 2017

Does anyone have any experience of fitting a 26mm Concentric to a single carb Dominator 88 and if so could you advise on what jetting you used please

Re: Dominator 88

Posted by John Shorter at January 30. 2017

Previously keith_king wrote:

Does anyone have any experience of fitting a 26mm Concentric to a single carb Dominator 88 and if so could you advise on what jetting you used please

 

Would suggest you ask Amal.

 

Re: Dominator 88

Posted by David Cooper at January 30. 2017

My 88SS came with one 26mm Concentric for some baffling reason.  It was remarkably gutless in my case.  A single 28mm transformed it (and two are better again, but obviously that's not what you want).  I think engines prefer an inlet tract that gets a bit narrow as it runs rather than starts narrow and then widens out a bit.

I wonder if one possible reason for my bikes poor performance on one 26mm carb have been that my bike also came without the inlet passageway sleeves.  So the inlet galleries were bigger than 26mm (maybe 28 or 29?) so maybe if you do have the sleeves or if the earlier heads had narrower inlets (did they?) perhaps it will be OK.

I think the main jet was 220, with No 3 slide and needle in centre.  I doubt if the carb retailer will know since they were never fitted by the works (but worth a try I suppose).

Last time I looked there isn't a chart on this web site listing carb settings for odd usages - like concentrics on earlier bikes - but there must be a few users about who have found out these things.

Regards

David

 

Re: Dominator 88

Posted by keith_king at February 02. 2017

Thanks David & John

I have asked a carb specialist and got nowhere and I thought that there might be someone out there who has already carried out this change

I will ask Amal as a last resort

Re: Dominator 88

Posted by keith_king at Monday 14:33

Previously keith_king wrote:

Thanks David & John

I have asked a carb specialist and got nowhere and I thought that there might be someone out there who has already carried out this change

I will ask Amal as a last resort

Amals advice was as follows

The recommended starting point when you change to a Concentric is to reduce the size of the Monobloc Main Jet by 20% and replicate the other settings apart from the pilot jet which is controlled by a bush on the Concentric.

 

 

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