David,
A partial reply to your questions.
Do not forget to pay attention to the cooling system. It isn't adequate
for the 260, much less a modified 289.
Easy reference:
http://www.tigersunited.com/techtips/SteveLaifmanValance/pt-SteveLaifmanValance1.asp
My Holley 4 BBL, on the LAT manifold, is 432 CFM has an electric choke,
which works quite well. This is the original LAT carb and still
available, new, at Sunbeam Specialties. You might be able to use the 600
cfm version, but on many Tigers this results in stumble on sudden
throttle mash, due to "overcarburation". May be suitable for the 289
version, but pay attention to carb tuning (jet sizes, orifices, etc.)
Steve
Steve Laifman
Editor - TigersUnited.com
dhhall@bellsouth.net wrote:
> My engine is at the shop, and I'd like some advice about ancillaries. My
>goal is a largely stock, or period available, with adequate power for touring,
>and good driveability. I have a Mk 1A, whose original 260 had too many freeze
>cracks to salvage. I was able to buy an original Tiger 289, and it has needed
>to be bored .030 over. I am retaining the original cast iron heads, new mild
>cam for a bit more torque, new taller valve springs, hardened valve seats.
>I'm inclined to use the Edelbrock carb, but wondered 500 or 600 cfm? I
>presume a manual choke. Thin carb spacer? Using the Mk 11 timing cover, must
>I use the cast iron water pump, or can I use the aluminum. I don't think I
>want a high volume one. For the flywheel, a lightened steel one, or aluminum?
> And probably a Centerforce clutch, per the recent discussions. Thanks for
>all the help, this list is great. David
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