NEW D-MAX /MUX /COLORADO FORUM

NEW D-MAX /MUX /COLORADO FORUM
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 Post subject: Exhaust Brake
PostPosted: Wed Jun 27, 2018 9:10 am 
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Joined: Wed Jun 27, 2018 8:02 am
Posts: 2
Location: Eastern Victoria
G'day guys and girls. Just wondering if anyone has fitted (or even looked into fitting) an exhaust brake to their D-MAX - either from a 4JJ1 powered N-Series truck or an aftermarket kit?

I'm looking into fitting one, but not sure whether there are any differences between our D-MAX 4JJ1s and those in Isuzu trucks (that come with a factory fitted exhaust brake) that would cause any issues. On paper they look much the same mechanically, ECU/ECM may be a different story.

I have emailed Isuzu this query, but so far have received nothing more than a generic cut-and-past statement about IUA's stance on modifications. Not surprised.

If anyone has any info on the subject it would be much appreciated.

Cheers.

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10/2017 D-MAX SX 4x2 Dual-Cab Low Ride Manual


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 Post subject: Re: Exhaust Brake
PostPosted: Mon Jul 02, 2018 8:39 am 
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Joined: Sat Oct 12, 2013 5:36 pm
Posts: 1402
G'day Nick
I have only had a quick glance at the N series but I think the size of the unit would be difficult to incorporate into a Dmax engine bay. There may not be enough room on that side. You would probably have to rework the whole front section of the exhaust systemif it will fit.

Might be worth investigating the presence of throttle pedal control wiring which brings the unit into operation when the pedal is not touched.

Cheers


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 Post subject: Re: Exhaust Brake
PostPosted: Mon Jul 09, 2018 7:48 am 
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Joined: Wed Jun 27, 2018 8:02 am
Posts: 2
Location: Eastern Victoria
Thanks for the reply mydmax.

After a bit more digging I have found that the exhaust valve springs on the N Series engine are much harder than those in the D-Max to compensate for the pressure created by the exhaust brake. Not planning on swapping valve springs any time soon... So scrap that idea.


Cheers.

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