> >Doing a little cleaning and re-assembly today and found the EGR pipe from
> >the valve to the manifold is cracked open at the bend for
> approximately an
> >inch. This is on a 75 TR6 and is Moss part number 379-425 for reference.
> >Moss list this pipe as NA. Does anyone know of a source or a
> substitute for
> >this pipe. It appears to be aluminum with the brass fittings and olives.
> >Would plugging the holes cause any major (or minor) problems. Thanks for
> >any help.
>
> Years ago, the replacement "L" shaped pipe for my TR6 came from TRF.
> The PO had purchased it (probably late 80's or early 90's). I
> suspect it does
> something important. <g>
This depends on your point of view. The EGR valve's only function in life
is to reduce emission of oxides of Nitrogen (NOx). NOx is actually pretty
harmless, it forms naturally in thunderstorms and gracefully degrades
without harming much of anything, eventually forming fertilizer. But, the
main problem is that the degradation process includes combining with
hydrocarbons in the atmosphere (many of which come from plants, Reagan was
only half-crazy when he said most pollution comes from trees) to form the
visible grunge we call smog.
Most 70's cars will actually get better gas mileage with the EGR blocked
off, but by 1980 or so, the carburetors and fuel injection were finely
enough tuned that lack of EGR would throw the mixture off enough to make
them run worse. The EGR should not be active (the valve closes) at full
throttle, so it has no impact on maximum power.
Randall
/// triumphs@autox.team.net mailing list
/// To unsubscribe send a plain text message to majordomo@autox.team.net
/// with nothing in it but
///
/// unsubscribe triumphs
///
/// or try http://www.team.net/cgi-bin/majorcool
|