Join Date: Jan 2011
Thanked 3 Times in 2 Posts
This might help why the angle concern
Original: Here is an actual picture of the Walbro WDA angle before a Mikuni swap on a '73 Panther 399. (I've included a 25 deg. comparison angle in the lower right corner.) The angle is very near the maximum Mikuni spec for 34mm VM's.
Update: I have finished my install by combining with an angled flange with the straight one bolted to the manifold. Now you can see before and after with a only minor angle per the spec.....the new Mikuni carb makes all the difference. It started this morning at -18 deg F. with choke on the first crank!.. Plugs are a nice normal tan color after a 5 mile cruise on the lakes. Great top end & nice smooth acceleration. I also integrated the new choke lever type to the dash where the old pull one was. Also was able to modify the throttle cable so it also works with the stock throttle lever and throttle tension switch.
I struggled with that old Walbro WDA way too long and it never ran this well even when the machine was new (38 years ago!)
Last step will be to add a K&N 4" washable round filter.
Last edited by Waterpower; 02-11-2011 at 04:15 PM.