Doug,
FYI the emissions testing procedure for pre-1981 cars will remain the same
with NJ's new testing rules. Only the wait in the line will be longer!!
Cheers,
Atwell Haines
'79 Spitfire [Waiting 5 more years to install those Webers & Headers!]
At 09:02 PM 7/8/99 -0500, Douglas Braun & Nadia Papakonstantinou wrote:
>
>What would the effect of these various modes be on emissions testing?
>Here in NJ, they test just HC and CO at idle (although this might
>change in the near future). I suspect that increased compression
>would cause more NO emission, but they don't test for that. But
>a more agressive cam would probably cause more HC, becuse of the greater
>valve timing overlap. Does this sound right?
>
>Thanks again,
>
>Doug
>
>At 01:36 PM 7/8/99 -0700, you wrote:
>>Doug,
>>The 1300 (mkIV) is essentially the same engine as the 1500 with a
>>shorter stroke. That stroke makes it mush more able to sustain higher
>>rpms than the 1500 which has better low end torque. There are piston
>>sets that will get the compression ratio up to 9:1 but as long as you
>>are at it, go ahead and add a mild cam and exhaust header with free flow
>>exhaust system. And lose the ZS carb. I prefer twin SU's (as I have
>>previously stated) but the down draft Weber is also a good choice. Stay
>>away from a single side draft Weber because of manifold design
>>limitations.
>>
>>With all that, you should have a nice performing Spit at a price of
>>little more than a normal engine rebuild.
>>
>>Regards,
>>Joe Curry
>>
>
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