Allisport VNT/intercooler kit-awesome.

[xrayxray]

As some of you know I bought a def130 with a 300tdi for the purpose of towing a 2.7 ton boat,in order for the vehicle to have enough power I installed a kit from Allisport in the Uk, this kit comprised of a VNT Turbo and manifold a full size intercooler and an uprated alloy radiator,has these improvements made a real world difference to the power output of the 300 tdi?-yes substantially.
Without the boat on the 130 goes like a cut snake from about 1600 Rpm onward and has much improved driveabillity,fuel consumption doesn't seem to be impacted too much,in fact I had fitted a 1.21 transfer case and the car was great to drive with less revs,I have since put a 1.41 case back in to help with moving off in first gear up inclines with the boat on but if you weren't towing heavy loads then this could be a handy conversion.
Now towing the boat,my boat comes in at over 2.7 tons loaded with a lot of windage which can have a huge impact and I wanted to be able to tow at highway speeds if safe to do so,I am very happy with the real world results and the goal has been achieved to my relief.
M1 between brissy and the gold coast I can sit on 100 klm's no worries all tho with the noise 90 to 95 is more comfortable-sound insulation in progress.
Between Loganholme and Redland Bay there are some steep hills 90klm speed limit and on most but the steepest hill it maintains speed and the worst hill it drops back to 83 kph and that is a long steep part of the road.
On average long inclines from about 80kph the vehicle will accelerate if asked to.
Worst EGT's are 620 degrees and I think this is where the cool air from the intercooler helps along with the big radiator to keep excessive EGT's down,normal running is between 300 and 400.
No Dyno figures yet due to lack of time but will get them done in the new year.
Its early days yet but I am really happy with the result,would I recommend this kit-definately it is a vast improvement to when I drove the car first without these improvements and Andrew from Allisport is great to deal with,he is very helpful.

[Yorkshire_Jon]

Yeah its a good kit for a 300Tdi.

Pre-production TD5 ones have also proved excellent - though they need a bespoke remap and commercially arent available as yet!

[Slunnie]

Pre-production TD5 ones have also proved excellent - though they need a bespoke remap and commercially arent available as yet!
Anything to get rid of the lag!

[Yorkshire_Jon]

A good remap will get rid of much of the lag... The VNT just make it go like the preverbial **** off a shovel and gives even more low down grunt!!

Its a bit like a highly tuned TD5 combined with the bottom end of a Tdi - or to put it simply - its the dogs danglies!

[Bush65]

Have you adjusted the injection pump?

If not, it would be worth doing.

[cewilson]

With regards to the transfer case gears, I find the same thing with my 200tDi. It does have trouble taking off uphill with a trailer - or sometimes without the trailer.]

But on the highway it has made a huge difference and is a lot easier to sit on the speed limit noise wise.

Cheers
Chris

[xrayxray]

Hi John,yes the Fuel pump is tweaked.

cheers.

[uninformed]

do you have any pics of he rad and inteercooler?

does your truck have A/C?

cheers, Serg

[mcrover]

As some of you know I bought a def130 with a 300tdi for the purpose of towing a 2.7 ton boat,in order for the vehicle to have enough power I installed a kit from Allisport in the Uk, this kit comprised of a VNT Turbo and manifold a full size intercooler and an uprated alloy radiator,has these improvements made a real world difference to the power output of the 300 tdi?-yes substantially.
Without the boat on the 130 goes like a cut snake from about 1600 Rpm onward and has much improved driveabillity,fuel consumption doesn't seem to be impacted too much,in fact I had fitted a 1.21 transfer case and the car was great to drive with less revs,I have since put a 1.41 case back in to help with moving off in first gear up inclines with the boat on but if you weren't towing heavy loads then this could be a handy conversion.
Now towing the boat,my boat comes in at over 2.7 tons loaded with a lot of windage which can have a huge impact and I wanted to be able to tow at highway speeds if safe to do so,I am very happy with the real world results and the goal has been achieved to my relief.
M1 between brissy and the gold coast I can sit on 100 klm's no worries all tho with the noise 90 to 95 is more comfortable-sound insulation in progress.
Between Loganholme and Redland Bay there are some steep hills 90klm speed limit and on most but the steepest hill it maintains speed and the worst hill it drops back to 83 kph and that is a long steep part of the road.
On average long inclines from about 80kph the vehicle will accelerate if asked to.
Worst EGT's are 620 degrees and I think this is where the cool air from the intercooler helps along with the big radiator to keep excessive EGT's down,normal running is between 300 and 400.
No Dyno figures yet due to lack of time but will get them done in the new year.
Its early days yet but I am really happy with the result,would I recommend this kit-definately it is a vast improvement to when I drove the car first without these improvements and Andrew from Allisport is great to deal with,he is very helpful.

Sounds fantastic, what was the ball park on price for the conversion if you dont mind me asking?

I would love the VNTon mine and a bigger cooler wouldnt go astray but for my driving not essential.

And just a small correction, The intercooler cools the intake charge so that the turbo can be more efficient (cool air is a lot smaller than hot air) so it effectively fits a bit more into the cyl for effectively more capacity and this has no effect on EGT's.

EGT's are taken after the charge has burned (or is still burning) so are not effected in any way from the intercooler and the radiator cools the engine in general and has very little effect on EGTs if any.

You have to control EGT's from fueling but it sounds as though you have them pretty much sorted at 620 max, but I wouldnt be asking much more of it.

Great to hear such good feedback, thanks :D

[rick130]

<snip> at 620 max, but I wouldnt be asking much more of it.

<snip>

They go higher than that with a stock engine on stock fuel settings ;)

[mcrover]

They go higher than that with a stock engine on stock fuel settings ;)

Really, from what ive read on here and elsewhere, 650 is about as far as you would want to go before you start damaging stuff.

I dont know much more than that as I dont have a tweaked pump and I dont have an EGT guage.

[Dougal]

Sounds fantastic, what was the ball park on price for the conversion if you dont mind me asking?

I would love the VNTon mine and a bigger cooler wouldnt go astray but for my driving not essential.

And just a small correction, The intercooler cools the intake charge so that the turbo can be more efficient (cool air is a lot smaller than hot air) so it effectively fits a bit more into the cyl for effectively more capacity and this has no effect on EGT's.

EGT's are taken after the charge has burned (or is still burning) so are not effected in any way from the intercooler and the radiator cools the engine in general and has very little effect on EGTs if any.

You have to control EGT's from fueling but it sounds as though you have them pretty much sorted at 620 max, but I wouldnt be asking much more of it.

Great to hear such good feedback, thanks :D

Xray has it right, intercooler and boost has a huge effect on EGT's.

Put simply, the hotter your intake charge, the hotter your EGT's will be. The higher your boost, the lower the EGT's will be.

[xrayxray]

I agree with dougal and it was confirmed by allisport.
can't give you a ball park on cost as I purchased when the dollar was high and since then world economies have changed so much regarding prices that a fresh quote would be required from Allisport,in saying that the parts supplied are top quality with very good craftsmanship.
Was considering a gas conversion at the time but glad I have gone this way with the intercooler,turbo and radiator.

Merry christmas everyone.

[rick130]

Really, from what ive read on here and elsewhere, 650 is about as far as you would want to go before you start damaging stuff.

I dont know much more than that as I dont have a tweaked pump and I dont have an EGT guage.


I used to see 623-625 climbing the range here pre-turbo absolutely bog stock engine.
3" exhaust dropped that by well over 25*, and as Dougal and xray said, drop inlet charge temp or increase boost will also see EGT's drop.
hell, I see a big difference from a cool to hot day climbing the same hills with the same load.

BTW, the usually quoted safe maximum is 720* pre turbo, but from what I've read you can have damaging combustion chamber/piston temps at lower or higher EGT's, it isn't always a direct correlation for some reason.
I'll see if I can find the source so the brains trust can debate that one.

[mcrover]

I'll have to take your word for it but it goes against what I was taught in trade school about EGT's and Turbo flow etc but then again, it's pretty general at trade school.

That information would be very interesting if you could find it Rick.

[pug303]

Really, from what ive read on here and elsewhere, 650 is about as far as you would want to go before you start damaging stuff.

I dont know much more than that as I dont have a tweaked pump and I dont have an EGT guage.

Hi, I had a better intercooler built and adjusted the pump years ago when it became popular in the UK. I bought an EGT guage from Ian (Thermoman) and did a stack of research on temperatures.

I settled on 720 being the max and whilst I would rarely get up that high have worked to that for more than 100,000kms with no problems. Regular running in the late 600s certainly doesn't seem to be any kind of issue.

Making sure your water temp is right and you have plenty of water, seems to be a far greater risk hence the fitting of better temp gauges, level gauges etc.

Incidently I was very surprised with the improvement of the better intercoooler alone. The standard cooler is quite restricted and even just fitting a better/bigger core in the standard housing improved boost at the manifiold by several pounds (as well as obviously cooling the charge better).

Cheers

Jim

[Slunnie]

Hmmmm yep, I've also seen testing results that show a larger intercooler will drop EGT's.

[hook]

this kit comprised of a VNT Turbo and manifold a full


Question,

Is this the same turbo, that come from the 2.8 made in Brazil???

[xrayxray]

not sure,have to cross reference part numbers,the manifold and gaskets are genuine International Motors who are the manufactures of the 2.8.

cheers.

[Bush65]

Question,

Is this the same turbo, that come from the 2.8 made in Brazil???
No, but a variation of the same size turbo - Garrett make dozens of variations to suit different vehicles.

Same size as far as the impellers and housing A/R's, etc.

But the mounting flanges and orientation are different - better suited for fitting to a 300Tdi.

[PAT303]

So can you get the original intercooler re-cored?. Pat