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GSR Carb tuning


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12 replies to this topic

#1 kiwi subbie

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Posted 30 June 2008 - 04:07 AM

i just picked up myself an gsr and just wanting to know what is the best way tune the twin carbs
thanxs

#2 Leeroy

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Posted 30 June 2008 - 09:16 AM

It's just not fair! What is it with New Zealand and GSRs?

Seriously, there is a tool called a carb balancer (or carb syncronizer) which is a vacuum gauge that allows you to tune both carbs. I don't think they are very expensive either.

#3 hatchsub

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Posted 30 June 2008 - 10:14 AM

Ttiwwop :). Mmmmhhh Gsr

#4 kiwi subbie

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Posted 02 July 2008 - 08:14 AM

sweet thanxs for that lol i guess uyas wanas see pics of it lol

#5 subaru360

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Posted 04 July 2008 - 12:37 AM

It's just not fair! What is it with New Zealand and GSRs?

Seriously, there is a tool called a carb balancer (or carb syncronizer) which is a vacuum gauge that allows you to tune both carbs. I don't think they are very expensive either.


I think this tool is commonly used by motorcycle mechanics if that helps at all.

#6 kiwi subbie

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Posted 04 July 2008 - 02:13 AM

any pics of what they ment 2 look like?

#7 Leeroy

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Posted 04 July 2008 - 07:13 AM

This eBay link should give you an idea:

http://cgi.ebay.com/...tem360066179355

#8 kiwi subbie

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Posted 05 July 2008 - 01:00 AM

sweet thanxs for that. i cant find any thing like that on trade me our verson of ebay :-\
i think theres an electronic 1 that you can get. just cant remember where i saw the info about it

#9 hatchsub

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Posted 07 July 2008 - 04:53 PM

Thanks for posting pics in the other thread. This is on my list of fav old subarus...that didnt make it to the US. Good luck with it. Looks awesome.

#10 Reveeen

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Posted 07 July 2008 - 05:19 PM

The trade name is "Uni-Sync", the money should be $20, it is suitable for 2 carbs only, 4 would be a handful.

Or, use a piece of heater hose inserted into your ear, listening carefully to the draw through each carb, make the noise you hear the same from each.

Whatever method you choose to use, there is a learning curve involved, don't expect miracles the first time.

#11 kiwi subbie

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Posted 08 July 2008 - 08:58 AM

is it ok to use an motorcycle carb syncronizer to do car carbs? or would the car carbs be to big and cause to much vacumme or something to get reading?

#12 naru

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Posted 08 July 2008 - 04:31 PM

is it ok to use an motorcycle carb syncronizer to do car carbs? or would the car carbs be to big and cause to much vacumme or something to get reading?


Should be fine.Unisyn and others are adjustible for different airflow rates and are intended to check synchronization at different RPMs anyhow.
Pretty simple,really.Used to use one regularly on a 4 carb car.
There are some pretty big bike engines.

#13 kiwi subbie

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Posted 09 July 2008 - 01:57 AM

Should be fine.Unisyn and others are adjustible for different airflow rates and are intended to check synchronization at different RPMs anyhow.
Pretty simple,really.Used to use one regularly on a 4 carb car.
There are some pretty big bike engines.


sweet i was wondering bout that. cause of the info i been reading up for them they say uses for motorbikes, boat motors, lite aircraft but didnt say about car use




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