Ext User(Toby Ponsenby)
19-08-2006, 05:32 AM
On Fri, 18 Aug 2006 20:18:47 +0800, Tsunami wrote:
> My old man went to a Nissan dealer (WA) where he bought his Pathfinder new a
> few years ago. They've had all the servicing and so they owe him a bit.
> Further the mechanics there are renowed as knowledgeable / good blokes blah
> blah, as is the service manager etc (info from a mate who is service
> manager at another dealer 200m away)
>
> Anyway, he asked if they would convert his Pathie to gas. Response was an
> emphatic "NO ... as the Jap motors are not designed for it and they will get
> valve seat problems (recession?) even if running petrol reasonably often".
> They said Commodores and Falcons are designed for it as they are taxi and
> fleetmobiles, however the general take on Jap cars is that gas is not a
> consideration of the designer so they will stuff up on gas.... the operative
> word is *long term* though.
>
> Any ideas? I am toying with idea of doing my Mitsi Challenger but prolly
> won't have it long enough to realise the benefits even with the subsidy.
> Yeah and while I'm at it, ball park figue to add gas to my Challenger?
>
> Cheers
Think on the way the Japs build engines.
They take what would (for example) be designed on the board to a 200
HP Four and de-tune the hell out of it for guess what - about 120HP
reliability.
So, the engine gets less radical cam timing, more restrictive exhaust
and so on. The idea is to get the engines to meet emission standards,
and last for a reasonable time. part of that is the ability to run
lean mixtures for extended periods, too - something the Japs have been
damm good at since the 1930's, BTW.
So these characters are telling you that valve will plough into the
head on an engine designed for NIL Tetra-ethyl lead, with pissy little
valve springs and ultra light-weight valves to reduce reciprocating
mass?
They're full of shit.
What they're 'really' saying is that they're shit-scared you'll take
the car to the gas shop for tune-ups and <gasp> maybe even servicing.
--
Toby.
quidquid latine dictum
sit, altum viditur
> My old man went to a Nissan dealer (WA) where he bought his Pathfinder new a
> few years ago. They've had all the servicing and so they owe him a bit.
> Further the mechanics there are renowed as knowledgeable / good blokes blah
> blah, as is the service manager etc (info from a mate who is service
> manager at another dealer 200m away)
>
> Anyway, he asked if they would convert his Pathie to gas. Response was an
> emphatic "NO ... as the Jap motors are not designed for it and they will get
> valve seat problems (recession?) even if running petrol reasonably often".
> They said Commodores and Falcons are designed for it as they are taxi and
> fleetmobiles, however the general take on Jap cars is that gas is not a
> consideration of the designer so they will stuff up on gas.... the operative
> word is *long term* though.
>
> Any ideas? I am toying with idea of doing my Mitsi Challenger but prolly
> won't have it long enough to realise the benefits even with the subsidy.
> Yeah and while I'm at it, ball park figue to add gas to my Challenger?
>
> Cheers
Think on the way the Japs build engines.
They take what would (for example) be designed on the board to a 200
HP Four and de-tune the hell out of it for guess what - about 120HP
reliability.
So, the engine gets less radical cam timing, more restrictive exhaust
and so on. The idea is to get the engines to meet emission standards,
and last for a reasonable time. part of that is the ability to run
lean mixtures for extended periods, too - something the Japs have been
damm good at since the 1930's, BTW.
So these characters are telling you that valve will plough into the
head on an engine designed for NIL Tetra-ethyl lead, with pissy little
valve springs and ultra light-weight valves to reduce reciprocating
mass?
They're full of shit.
What they're 'really' saying is that they're shit-scared you'll take
the car to the gas shop for tune-ups and <gasp> maybe even servicing.
--
Toby.
quidquid latine dictum
sit, altum viditur