Thread: 300 TDI TD5 Turbo Upgrade

So has anybody on here got any idea what the maximum pressure i can use is with a defender TD5?

The maunal says 1.1 Bar (16 psi) but its been boosted and from my Nanocom i can see that the peak pressure is 1.22 Bar (17.7 psi) but under load it steadys out at about 1.16 Bar (16.8 psi).

Is this ok or do i need to drop it down? If its left running like this what effect will it have on fuel economy?

Many thanks for the help.

Pete.

It should be ok. On the Discos I think it will go as high as 19 psi before limp home mode will kick in. I stand to be corrected but it is higher than what you are seeing on your defender.

Fuel economy is determined by how much fuel is squirted into the pots, therefore I would not expect that it is having any detremental effects on fuel consumption unless you have had the ECU remapped. More air will help the EGT run cooler.

Originally Posted by philco

hows your homemade turbo manifold going?

So far so good! developed a manifold leak so its in bits atm with a stripped bolt. defiantly a difference compared to the old turbo. I plan on doing a few more longer road drives before i take it off road. Will report back

Mick

Link to Garrett website. This is the catalogue link available in 2 parts TurboByGarrett.com - catalog

Turbo selection etc for diesel donks TurboByGarrett.com - Turbo Tech101

Generally, have a good look over all the info they supply. Used this site for a few years now sourcing for replacement units.
Failing that, contact Honeywell themselves. Guys are pretty good and knowledgeable.

Cheers

Andrew

Originally Posted by disco_ute

So far so good! developed a manifold leak so its in bits atm with a stripped bolt. defiantly a difference compared to the old turbo. I plan on doing a few more longer road drives before i take it off road. Will report back

Mick

Report please !

Originally Posted by loanrangie

Report please !

3 words
four month old

will try sat morning to fix the intake manifold

Originally Posted by disco_ute

3 words
four month old

will try sat morning to fix the intake manifold

Ha ha, been there done that - its fun isnt it, you guys will have to come around one of these days, my girls will be all over her.

Hi, great job on the turbo conversion.

A friend of mine has done this conversion on a 300tdi bowler. I will see if I can get some pics uploaded.
When I mentioned this to him he did say he was having problems getting enough fuel through the standard pump and injectors even though they are all turned up to the max. from what i can understand the td5 turbo is producing too much air volume for the pump to keep up. I will try and find out if the turbo is standard td5 or breathed on.
Also are you planning on running an egt guage? in my limited experiance the 300 tends to suffer from high exhaust temps when played with. an oversize intercooler will help but not cure the problem.

good luck...