View Single Post
  #1  
Old 04-24-2025, 12:30 AM
Jack Gifford's Avatar
Jack Gifford Jack Gifford is offline
formerly 'Pontiac Jack'
 
Join Date: Dec 2004
Location: Phelps, NY 14532
Posts: 10,340
Default

Finally got a good test run of the twin today. The tune is close enough to see A/F ratios in the ballpark- 4.8 to 5.4 with a throttle hit. No unusual vibration or shaking. So I'll start re-installing it, shooting for the July event in Loring.
Strange- how the exhaust doesn't sound like a twin, just sounds mean like the four did! And totally unlike my odd-firing John Deere.
Attached Thumbnails
Click image for larger version

Name:	tractor_cab1.jpg
Views:	121
Size:	59.2 KB
ID:	650730  

__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons?
... or has built a record breaking DOHC hemi four cylinder Pontiac?
... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967)
... or has a Pontiac born the same year as Jim Wangers? (1926}
The Following 3 Users Say Thank You to Jack Gifford For This Useful Post: