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PostPosted: Wed Sep 13, 2017 4:13 am 
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Hi,

I know this has probably been asked a million times but I've only seen one post that has a similar setup and I want to know if this sounds about right.

As stated 1330 with 276 Kent cam, 1.5 rockers, extractors, extensive porting etc.

Currently I'm on about 24 flats which seems excessive but anything below 22 and it struggles to run. It does over run on shut down when it's hot or been running for a while especially in warm weather. Anything more than 24 flats and its rich so I'm picking the needles for a start are wrong.

I did read someone saying a number 3 or 4 needles with red springs. If that's a good starting point what sort of flats would I be looking at as a starting point.

Currently I have AAM needles with red springs and the HS4's were bought brand new a couple of years ago.

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PostPosted: Wed Sep 13, 2017 4:28 pm 
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Try AH2 needles.

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PostPosted: Wed Sep 13, 2017 7:48 pm 
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The jets should be 1 to 2mm below the bridge of the carb. My engine is 1360 big ports, re13 cam twin hs4 red springs, dizzy correctly set up for the cam and AAm needles as well. Goes well.

You could be running it way to rich.

Kiwiinwgtn


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PostPosted: Fri Sep 15, 2017 7:40 am 
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kiwiinwgtn wrote:
The jets should be 1 to 2mm below the bridge of the carb. My engine is 1360 big ports, re13 cam twin hs4 red springs, dizzy correctly set up for the cam and AAm needles as well. Goes well.

You could be running it way to rich.

Kiwiinwgtn


hmmmm interesting... Swift set them up brand new so I would think they should be sitting right... I might come up a couple of flats and see... Cooperman over at the mini forum seems to think a number 6 will work well?!?

how many flats are you on bud?

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PostPosted: Fri Sep 15, 2017 10:30 am 
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I dont set by flats. I set the jet down from the bridge in mm with a vernia caliper. By turning the nuts you move the jet. Aam needle is a floating 6 needle. If larry set it up it should be right. He gave me my needle recomendations which was pretty spot on.

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PostPosted: Fri Sep 15, 2017 10:32 am 
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They will no longer to set correctly if you adjusted the nuts

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PostPosted: Fri Sep 15, 2017 11:42 am 
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I found #6 needles worked well in my 1293 with ported head, twin HS4s and Tighe 104 cam, with Corolla 1.46 rockers.

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PostPosted: Fri Sep 15, 2017 8:06 pm 
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kiwiinwgtn wrote:
I dont set by flats. I set the jet down from the bridge in mm with a vernia caliper. By turning the nuts you move the jet. Aam needle is a floating 6 needle. If larry set it up it should be right. He gave me my needle recomendations which was pretty spot on.

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Pretty sure the jets have been adjusted after I got them so I wouldn't know for sure what they were. Are you able to let me know what your measuring and I'll see how far off I am. but I may call Larry to ask.

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PostPosted: Fri Sep 15, 2017 8:30 pm 
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You need to take the carb bells off needles out. Look down into carb. You will see the jet. Measure the depth it sits down from the bridge of the carb (the flat base on the bottom of carb)

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