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Anyone ever smog test a slant?
https://slantsix.org/forum/viewtopic.php?t=43996		 Page 1 of 1
Author:  CrAlt [ Fri Mar 11, 2011 11:02 pm ]
Post subject:  Anyone ever smog test a slant?
Anyone ever run their slantsix thru smog testing?

I have a 91 D150 with a 318.. its tired and can't pass smog now. Its allowed 160ppm on the HC and its blowing over 200 with a new cat. It also only ever got 10-12mpg..

I have a few good slants and was thinking of swapping one in.

Has anyone ever smog tested their engine and have some numbers? I need to know if a slant has a chance of hitting 1991 numbers.

I can't really justify rebuilding the 318 because the value is so low on the pickup and it gets such crap millage.
Author:  Jester [ Sat Mar 12, 2011 3:47 am ]
Post subject: 
Yes, but only at idle:

HC ppm: Vehicle reading 261

Max allowable: 968

Average passing reading: 202


This was with a decently tuned slant in a 72 Dart, with an (converted) electronic ignition. For some reason I thought I'd do better than average...

This is with no Cat. The paper also says I should get 100kms out of 9.4 litres of gasoline... Seems a bit optimistic :D
Author:  Jester [ Sat Mar 12, 2011 5:00 am ]
Post subject: 
25mpg :) maybe on the highway
Author:  sandy in BC [ Sat Mar 12, 2011 5:58 am ]
Post subject: 
Long time no post Mr Chrome Alternator......
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