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kartbro
 Post subject: CR for Stroker Motor
PostPosted: Tue Jun 27, 2006 11:55 am 
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848cc
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Joined: Mon Jan 09, 2006 12:05 am
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Location: Coffs Harbour
I'm wondering what sort of Comp. Ratio I should be aiming for. I want to run standard fuel (95 :?: ), Using a RE13 cam, some headwork. 1412cc. Pulsar Dizzy. Any recommendations?

Thanks

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2002 TopKart Viper with Blueprinted Yamaha KT100S @ 17hp. 160kg.
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MrBob
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PostPosted: Tue Jun 27, 2006 2:38 pm 
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Location: Grays Point
I'm running about 10:5 to 1, but have always run 98 fuel. I've never tried it on 95 so can't tell you if it would ping or not.

Why run 95? If you're spending the money on a good engine, why not put 98 in it? When petrol is $1.40 whats an extra 6 cents or whatever??

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Bob Slattery
Duffman Says A Lot of Things - OH YEAH!!
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1360 LS
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PostPosted: Tue Jun 27, 2006 7:16 pm 
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1275cc
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Joined: Thu Mar 30, 2006 8:22 am
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Location: Somewhere...... over the rainbow
Im runnig 10:1 CR on y 1360 and I always use 98 petrol. Sounds like you have a pretty hot engine so I would be respecting the engine by putting in 98. I was todl to use nothing but 98 when i had my engine rebuilt.
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drmini in aust
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PostPosted: Tue Jun 27, 2006 7:24 pm 
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Location: near Baulkham Hills, NSW
Mine is 10.7 and runs fine on 98. Does NOT like 95 though.
Our 1293 is running 9.4 and runs OK on 95. We took that car on the trip to Tassie, as 95 is the best they have!

10:1 would be OK on 95, with an RE13 cam. You may as well go 10.5 and use 98, it's not much dearer...:wink:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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kartbro
 Post subject:
PostPosted: Wed Jun 28, 2006 8:34 am 
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Joined: Mon Jan 09, 2006 12:05 am
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Location: Coffs Harbour
Yeah 10.5 sounds nice... Thanks Guys

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