Some interesting details

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Spreetography
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Some interesting details

Post by Spreetography »

I was messing around with a rich-running condition yesterday, and looking for the notches on the slide-needle I noticed these differences between the '85 and '86 needles. I'm running the '85 carb, so I switched to the '85 needle. Slides themselves have no differences.
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showing 5 notches for 85
showing 5 notches for 85
100_2418.jpg (51.97 KiB) Viewed 2737 times
showing 3 notches for 86
showing 3 notches for 86
100_2417.jpg (46.67 KiB) Viewed 2737 times
'86 needle on left, smaller diameter
'86 needle on left, smaller diameter
100_2420.jpg (54.97 KiB) Viewed 2738 times
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1985/86 Spree mixture
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Bear45-70
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Re: Some interesting details

Post by Bear45-70 »

This is not news. The '84 and '85 have the 5 notches with #4 as stock and the '86 and '87 have the 3 notch needle and the center is stock. Going richer the both have only 1 notch to go.
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Image

'83 Aero 80 X 3
'84 Aero 80 X 3

'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree
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bakaracer
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Re: Some interesting details

Post by bakaracer »

the thicker needle on the right will run leaner between 1/4 and 3/4 throttle than the needle on the left.
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Spreetography
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Re: Some interesting details

Post by Spreetography »

Ahh I see...I figured it was a known difference. So Im guessing... for '86,since the slide needle is smaller, therefor richening the mixture, and knowing the reeds are larger, the main jet is also probably slightly larger?
"Great opportunities are often missed, being mistaken for work." :D

1985/86 Spree mixture
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Bear45-70
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Re: Some interesting details

Post by Bear45-70 »

Nope, main jets are both #68, reeds should have no effect on jetting unless they change the size of the case, which they don't.
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Image

'83 Aero 80 X 3
'84 Aero 80 X 3

'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree
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Spreetography
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Re: Some interesting details

Post by Spreetography »

Im glad to know that, thanks Bear. It all makes sense now!
"Great opportunities are often missed, being mistaken for work." :D

1985/86 Spree mixture
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