300 Tdi - Bit More Go

[Jock The Rock]

gday

i was just wondering i have a 300 tdi which has done 280000 ks. i was just wondering could anyone suggest how to get a bit more go out of the old girl. nothing to expensive and hopefully something that wont compromise fuel economy.

i have just done a rear main seal so wont be able to afford anything for a while.

what would you fellas suggest?

Thanks for ur help

Jock Hamilton

[Psimpson7]

Not a huge amount you can do really.

Wind out the fuel pump and change the intercooler (but they cost a bit) There are also VNT turbo conversions available but they cost even more!

Cheers
Pete.

[Blknight.aus]

along with winding out the fuel pump you can mess with the boost pressure setting a little bit by adjusting the wastegate valve rod and then a little tweak on the boost compensator (part of the FIP) will bring it up a little faster.

[Disco_owner]

gday

i was just wondering i have a 300 tdi which has done 280000 ks. i was just wondering could anyone suggest how to get a bit more go out of the old girl. nothing to expensive and hopefully something that wont compromise fuel economy.

i have just done a rear main seal so wont be able to afford anything for a while.

what would you fellas suggest?

Thanks for ur help

Jock Hamilton


Jock ;

Within the 300tdi Bosch Pump there are adjustment that can be made to improve the driveabiliy of your Vehicle ,

3 Adjustment

.Eccentric Cone / Diaphram Position
.Stop Screw
.Star Wheel adjustment

before you set out to do any tweeking , Please buy and install a Pyrometer ,don't set about doing any tweeking without being able to monitor how hot things are getting inside your engine ,

Also if engine is slightly down on Power have you checked following;

A) Valve Clearances 0.2 mm on intake and EggZost side

B) AIR Filter / Fuel Filter replaced etc

C) Intercooler / Turbo Hoses .

If you'd like to obtain a Pyrometer go here

www.thermoguard.com.au (http://www.thermoguard.com.au)

[rangieman]

Try this from the past some good info in here , and links , the search button is your freind
http://www.aulro.com/afvb/technical-chatter/32656-injector-pump-tweaking.html

[long stroke]

Maybe you could replace the exhaust with a 2.5" system strate through i don't know how much power you will gain though;)
Or you could upgrade the turbo and intercooler, new airfilter, new injectors etc.

CHEERS TIM.

[rangieman]

On my Tdi i removed the main muffler and replaced it with a straight thru hot dog muffler , It made a slight difference at spool up

[jx2mad]

I had gas fitted to my 300tdi. It has a great increase in performance plus around 1000k per tank of diesel. Jim

[DirtyDawg]

I had gas fitted to my 300tdi. It has a great increase in performance plus around 1000k per tank of diesel. Jim


Safest way to get more go.......tweaking the pump can lead to disaster for some and if you want to go down that track..get a deiso mech to do it....IMO

[Jock The Rock]

thanks for all your advice fellas

ill see how the wallet is feeling after the seal is fixed, and perhaps hava look at some things.

i noticed no one mentioned electric cooling fan kits? or silicone hoses? are they a waste of time?

im only askin as ive read about them in magazines.


I had gas fitted to my 300tdi. It has a great increase in performance plus around 1000k per tank of diesel. Jim

by the way can i ask how much the conversion set you back?

Thanks

Jock

[81stubee]

Best thing I did to mine, was to:

Install Pyrometer for monitoring Exhaust Gas Temp.
-Drill a Hole in the EGR blank plate and then bronzed in a piece of Stainless with a hole drilled down to near the end. This gave me somewhere to stick the probe ($10). I then ran the lead into the car where I had a Digital Multi meter ($30) on the dash.

Wind up the Fuel pump. (only do this with a EGT gauge), There is a great page/tutorial on here somewhere, just can't find it at the moment.

What ever you do the EGT must not go above 700 degrees C. I had mine up pretty high. Over Chrissie on the Long Hill up the monaro hwy from Cann River, with the camper was nudging 700 b4 backing off. Mind you I was sitting close to 90kmh the most of the way.

Cheers

Stu

[rangieman]

Best thing I did to mine, was to:

Install Pyrometer for monitoring Exhaust Gas Temp.
-Drill a Hole in the EGR blank plate and then bronzed in a piece of Stainless with a hole drilled down to near the end. This gave me somewhere to stick the probe ($10). I then ran the lead into the car where I had a Digital Multi meter ($30) on the dash.

Wind up the Fuel pump. (only do this with a EGT gauge), There is a great page/tutorial on here somewhere, just can't find it at the moment.

What ever you do the EGT must not go above 700 degrees C. I had mine up pretty high. Over Chrissie on the Long Hill up the monaro hwy from Cann River, with the camper was nudging 700 b4 backing off. Mind you I was sitting close to 90kmh the most of the way.

Cheers

Stu
Something like this is cheap enough;)
DIGITAL EGT THERMOMETER PYROMETER W/ Probe - eBay Thermometers, Test Equipment, Electrical Test Equipment, Business Industrial. (end time 27-Jul-08 23:41:03 AEST) (http://cgi.ebay.com.au/DIGITAL-EGT-THERMOMETER-PYROMETER-W-Probe_W0QQitemZ190237680721QQihZ009QQcategoryZ5097 4QQcmdZViewItemQQ_trksidZp1742.m153.l1262)

[Silverone]

Is your tdi300 a electronic diesel control or done by the good old fashioned cable. If its cable control I can tell you what I did to mine and which gave it a lift in performance. Also is it auto or manual. At 280000 kms I would be a bit careful if its had no motor work.
Regards Ray
Rotorua:)

[rangieman]

Is your tdi300 a electronic diesel control or done by the good old fashioned cable. If its cable control I can tell you what I did to mine and which gave it a lift in performance. Also is it auto or manual. At 280000 kms I would be a bit careful if its had no motor work.
Regards Ray
Rotorua:)
All ozzie Tdi,s are old fashion control jobbies , no electronics till the Td5:D

[Jock The Rock]

Is your tdi300 a electronic diesel control or done by the good old fashioned cable. If its cable control I can tell you what I did to mine and which gave it a lift in performance. Also is it auto or manual. At 280000 kms I would be a bit careful if its had no motor work.
Regards Ray
Rotorua:)

yeh its cable and manual?

Thanks

Jock

[feraldisco]

I had gas fitted to my 300tdi. It has a great increase in performance plus around 1000k per tank of diesel. Jim


there was an interesting article on diesel gas in the May edition of Overlander - the most detailed description I've seen of the technology out of all such mag articles in the last year. It had an amazing graph of the performance increase on a 300Tdi Defender - almost double the HP and torque! The effect on an electronically-controlled TD is much less but still significant...

[feraldisco]

Is your tdi300 a electronic diesel control or done by the good old fashioned cable. If its cable control I can tell you what I did to mine and which gave it a lift in performance. Also is it auto or manual. At 280000 kms I would be a bit careful if its had no motor work.
Regards Ray
Rotorua:)

By all means get a compression test, but I know of a 200Tdi with 500K k on the original motor, so 280K k isn't too high for some sensible performance mods - many of which don't need to result in much more stress on the motor (e.g. remove centre muffler and fit ECU-controlled diesel gas from a respected supplier - and then try to avoid using all of the increased power all of the time!) unless you flog the vehicle of course...

[Disco_owner]

there was an interesting article on diesel gas in the May edition of Overlander - the most detailed description I've seen of the technology out of all such mag articles in the last year. It had an amazing graph of the performance increase on a 300Tdi Defender - almost double the HP and torque! The effect on an electronically-controlled TD is much less but still significant...

Hi Feraldisco;

Any chance you can Scan the article and post it up in Aulro ?

[disco_ute]

I got a proper disel tune done i went the 'FULL' tune which involved pump mods which were mechanical rather then just little pump tweaks. I would suggest new injectors whould make a big difference without any other mods to start with. my 300tdi went in to the tune with 33kw @ the wheels and came out with 50.1 @ the wheels and OMG what a difference!! 4th gear (mine is an auto) pulls away now!! unfortunaly money talks! save some cash and get it done by a pro i had my pump tweaks ok but did a head gasket mostly due to age 265km. so i was up for a full head rebuild and then the tune so it cost me more in the long run...

[feraldisco]

Hi Feraldisco;

Any chance you can Scan the article and post it up in Aulro ?


sorry, I don't subscribe to 4WD mags any more, so it was actually a library copy I was flicking through...

[Jock The Rock]

how much am i looking at roughly for a gas conversion? $4500?

Thanks

Jock