Skip to main content

My 2,110 runs pretty well (sea level) with Dual 48 IDF's with 40 vents, F11 etubes, 160 mains, 205 airs, 60 idles, 50 pump squirters (no drains). The idles were too rich so I stepped down to 57.5. Wide-band A/F meter showed everything OK; still a bit rich at idle and a change from 12.5-12.7 to 13.0-13.2 from around 2,600 to 2,900, then back to 12.5-12.7 as the mains came in, then a bit rich above 4,500. But -it didn't run quite as good as I thought it should.

Swapped out to F2 etubes, 155 mains, and 160 airs ("square" jetting,
which is close to what 6 cyl 3,600cc Aston Martin DB4GTs ran in
their triple DCOEs with 40 vents). And went for a test ride. ---> WHAT
A DIFFERENCE! <--- A/F readings are a bit tighter and stay between
12.5 and 13.0 and the mid-range is A LOT STRONGER. The Astons
ran 55 pump squirters so I'll give that a try this coming weekend.

If you're not happy with your F11 emulsion tubes you might want to give F2's a try.
Original Post
My 2,110 runs pretty well (sea level) with Dual 48 IDF's with 40 vents, F11 etubes, 160 mains, 205 airs, 60 idles, 50 pump squirters (no drains). The idles were too rich so I stepped down to 57.5. Wide-band A/F meter showed everything OK; still a bit rich at idle and a change from 12.5-12.7 to 13.0-13.2 from around 2,600 to 2,900, then back to 12.5-12.7 as the mains came in, then a bit rich above 4,500. But -it didn't run quite as good as I thought it should.

Swapped out to F2 etubes, 155 mains, and 160 airs ("square" jetting,
which is close to what 6 cyl 3,600cc Aston Martin DB4GTs ran in
their triple DCOEs with 40 vents). And went for a test ride. ---> WHAT
A DIFFERENCE! <--- A/F readings are a bit tighter and stay between
12.5 and 13.0 and the mid-range is A LOT STRONGER. The Astons
ran 55 pump squirters so I'll give that a try this coming weekend.

If you're not happy with your F11 emulsion tubes you might want to give F2's a try.
Post Content
×
×
×
×
Link copied to your clipboard.
×
×