broken exhaust mount on GQ / feedback on extractors

[malcolm]

Hi, this is my first post since joining up - hopefully I'm in the right place and not repeating anyone:

I've just checked the diff/ gearbox oil levels etc under the truck and noticed that the exhaust bracket that runs from the gearbox mount area is broken .

The bracket was sitting on top of the bash plate and was not connected to the exhaust - I believe it was not connected back up to the exhaust when I had the clutch changed about 3 years ago ! . - It may have just failed through fatigue and vibration - but it's a fairly heavy duty bracket .

Anyone seen this before or has a spare one knocking around ?

Also , I've a set of headers/extractors in the shed that i never fitted - As i look to be up for some exhaust work may be I'll fit them - any feedback on performance/economy ? motor is 4.2 TD non turbo , 320,000 kms

Cheers everyone

[Winnie]

I can comment on the extractors for a TB42. I noticed a very small increase in power, probably not worth the time it would take to fit them. However, noticed a big increase in economy, definitely worth doing. I am now getting an extra ~60kms per tank of LPG.

[malcolm]

Thanks kristoffa, interesting - a significant improvement in economy, I'll see if anyone posts a comment on diesels .Cheers

[bordertech]

They always break whether on deisels or petrols, from normal engine and transmission vibrations because it's mounted solid to the pipe without any insulation from vibrations.
I put a flexible strap join onto the bracket on mine years ago. Haven't had an issue since.

[malcolm]

Thanks for that , I'll do the same when I fix it, have a good day .

[Stusgq]

Hey Malcolm, mate I have a set of headers on my td42, along with a 2.5 mandrel exhaust. It has made a slight differance in power, more noticebly in fuel economy. the best thing about it is the sound though, compaired to how it was stock it sounds great.

[malcolm]

Thanks Stu' - worth doing for the economy alone . Also it looks like you can get a 2.5 exhaust cheaper than the standard item - about $500 on ebay compared to $800 locally for standard item . Cheers and have a good evening,