Hi Lawrie
This message brought up the subject of cams. And you mention the use of
a mild street cam. This is where I have some confusion. I've looked at
cams from various grinders and they seem to be sold by specification.
What I mean is they have 160, 170, 180 and even 190 or greater duration
cams with various lifts. Terms like "mild", "1/4" and 1/2 race etc. are
not mentioned. What do you consider a mild cam? What criteria do you
use in selecting a cam? Like when you would use a 170 duration and when
would you use a 180 duration cam. What would be the "hottest" cam that
can be used before you start to have to modify the head, intake and
exhaust. I know a lot can be said on this subject but I would like to
hear from experience on using different cams.
Thanx
Dennis
67 MGB
Lawrie Alexander wrote:
>
> Carl...........
>
> I know the old saying, "there's no substitute for cubic inches", but I have
> never been impressed with the 2-litre MGBs I've experienced. I know of three
> in my locality at the moment and not one of them is quicker than my 40-thou
> overbored BGT! My biggest objection is that, with the added capacity, you
> have a need to remove more heat from the engine - and many folk already
> complain that Bs don't cool well - plus you have the attendant risk of
> cylinder wall warpage from having removed extra metal that the factory
> thought was necessary to support and cool the cylinders. Then you have the
> need to change the carb needles and springs (to what? who really knows?), or
> even fit 1-3/4" carbs (again, what needles are best?) to make the most of
> the added displacement.
>
> So, my two cents (or does that long paragraph constitute a nickel's worth?)
> says go 40 over and fit a mild street cam, and know that you'll be able to
> get the carbs right and have a powerful, trouble-free motor.
>
> Lawrie
> (willing to race any 2-liter B with either my BGT or my 77 roadster!)
>
> -----Original Message-----
> From: Carl French <cfrench@cybertours.com>
> To: mgs@autox.team.net <mgs@autox.team.net>
> Cc: bfrench@nh.ultranet.com <bfrench@nh.ultranet.com>; info@britbits.com
> <info@britbits.com>
> Date: Monday, November 29, 1999 7:17 PM
> Subject: 2 Litre
>
> >I have been offered a set of never used 2 litre pistons for my
> >rebuild, they would be free from a friend. I have a 67B with the
> >original motor from what I can tell. What would you say are the risks of
> >trashing the block? Other thoughts? Lawrie?
> >Carl French
> >
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