Biff,
Comparing your setup with ours, it looks like we have plenty of
fuel, if not too much, but the 27mm chokes may be the cause of it
falling down as the RPM rapidly increase. With the added displacement of
the 1310cc (1275+.040) would we be better off with 30mm chokes or 32mm?
Regards,
Tom Speed
www.mgracer.com
12431 Lawyers Road
Charlotte, North Carolina 28227
-----Original Message-----
From Biff [mailto:biffjones at erols.com]
Sent: Friday, August 06, 2004 11:43 PM
To: Tom Speed
Subject: Re: Weber Jets
Tom,
You don't say which motor you have. Any way, I am running a Weber 40 on
my 948. It is stock except for 10.5 to 1 compression, modified
electronic ignition, and a header set-up. My set up is a little lean on
the top end but fine up to redline, i.e., no bog. My settings are:
**Choke 30 (from 32)
Aux Venturi 4.5
**Main Jet 120 (from 140)
EmTube F-11
**Air Corrector Jet 180 (from 175)
Idle Jet 45F9
**Acc. Pump .35 (from 50)
**P/Ex Valve 50 (from closed)
Needle & seat 1.75
The double asterisk items were the ones changed from the original
factory settings for a 948/1100. As I said above I am giving up some
power on the top end for the sake of fuel economy. As set up I can get
35+ mpg at 4500 rpm when cruising. Lead footing around I only average 25
mpg.
Biff Jones
'59 Bugeye 'Kermit'
'61 AH Sprite 'Ole Gray' in the "Healey Book"
'71 Midget 'Freebie"
http://sprites2.homestead.com/
Check out the new British Cars Forum:
http://www.team.net/the-local/tiki-view_forum.php?forumId=8
|