[Roadsters] Datsun-roadsters Digest, Vol 10, Issue 14

[hrhaslett]

Also check to see if you have a leak at the intake manifold where the carbs bolt on. Spray some carb cleaner while running and  see if rpm changes. That has to be fixed before carbs can be balanced. 


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-------- Original message --------From: Steve via Datsun-roadsters <datsun-roadsters at autox.team.net> Date: 2/19/18  8:00 PM  (GMT-08:00) To: datsun-roadsters at autox.team.net, gmroyston at hotmail.com Subject: Re: [Roadsters] Datsun-roadsters Digest, Vol 10, Issue 14 
Gerry ,

  The number one reason for rocking and or shaking Sporty car engines 
,is Out of sync carbs and bad engine mounts .

Timing chains are not the place to start with that issue ,however ,that 
doesn't mean you may not need timing chains .

Not many people know or realize that the U 20 timing chain system , due 
to design short comings , are only good for

50 k + - , reliable use. You can sometimes run longer and also not as 
long ,without problems ,or blown engines as a result,

usually caused by issues not corrected or managed in the design .

  Back to shaking engines... You may need a SU tuning and setup person 
to get it running well. Another known issue with the U20

are the Poor carb bushings issues. Another is trying to use late model 
dizzys trying to run too much timing at idle . Anyways ,this

issue isn't a magic fix to repair.


Best Regards ,

Steve Ehlers,  owner of Rising Sun Performance , The Oldest Datsun 
Specialty Shop in Texas .


>     1. Shaking Engine (Gerry Royston)
>    
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 16 Feb 2018 19:38:19 +0000
> From: Gerry Royston <gmroyston at hotmail.com>
> To: "datsun-roadsters at autox.team.net"
> 	<datsun-roadsters at autox.team.net>
> Subject: [Roadsters] Shaking Engine
> Message-ID:
> 	<BN6PR22MB05476B36D6BCEC541E8D44F4A7CB0 at BN6PR22MB0547.namprd22.prod.outlook.com>
> 	
> Content-Type: text/plain; charset="iso-8859-1"
>
> I've had my 2000 Roadster for over a year and the engine has always shaken a lot when idling.  This is starting to bother me.  My mechanic says it might need a new timing chain which might be a good idea regardless.  He tells me it's not related to engine mounts or anything like that.  Just wanted to check to see if anyone else has had a similar issue before turning it over to him for an expensive timing chain job.  Thanks for your help.
>
>
> Gerry Royston
>
>

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