Turbo on 1.5d [Archive] - Saxperience

Cammy

22nd December 2010, 16:16

Look at it this way,

a turbo diesel DOSENT work like a petrol turbo, so if your thinking its going to be as easy as making it work like a petrol turbo - your completely wrong, as they both work in 2 completely oposite ways

Petrol turbos can blow into the carb or throttle body then into the engine, or suck through the carb then force fuel and air into the engine, known as blow through, or suck, although diesels do not have a throttle plate, the inlet manifold is open all the way into the cylinders, even with no throttle - so the speed is only made by how much of the diesel you are putting into the engine so in reality the engine is always seeing no vacume or the tiny-est ammount, so in otherwords, if you wanted to stick a blow-off valve on your diesel turbo - it wouldnt work (it would but restrict performance by causing a leak)

yorkie

22nd December 2010, 16:29

really u wanna do that???

save 1000's and go buy a 306 td for £500 cheap insureance and a turbo diesel

Matt-T

22nd December 2010, 16:32

really u wanna do that???

save 1000's and go buy a 306 td for £500 cheap insureance and a turbo diesel

Was about to say, buy a 306.

Cheap to insure. Fairly good cars.
My Vaux 2L DTi i think was group 7

AXracing

22nd December 2010, 16:52

Yes it can be done and should not be overly difficult. You just have to canniblise the boost pressure correction fuel system off a similar tune tub diesel that uses a mechanical injection system. However you still have to get the turbo and mount it in the vehicle. With this engine the exhaust is down the rear so space is a little more tricky then the petrol. You could not run to much boost with the standard internals and with no anti lag system the throttle response would be even poorer then it is now. Modern diesels all use a gas recirculation system to keep the turbo spinning. It is a lot of money and effort for something that would likely be slower and less fuel efficient then a standard 1.4 petrol.

xxo0pko0xx

22nd December 2010, 19:06

Not worth it tbh. Why would you want to waste thosands making a td saxo that will
still perform shit not to
mention the fact that a td is already awful
fuel eccomony compared to modern diesiels. With boost you'll
be looking at about the same fuel
eccomony as a 1.1 and have less bhp
then a vtr :/ not worth it. Get a modern diesiel

solo_x

22nd December 2010, 20:02

hm... how make more hp? at least 10 more?

Saxguy

24th December 2010, 09:49

hm... how make more hp? at least 10 more?

sell it and get a petrol :)

KrisB

24th December 2010, 22:04

really u wanna do that???

save 1000's and go buy a 306 td for £500 cheap insureance and a turbo diesel

Then pay someone like me to piss about with the fuel pump, fit a T2 turbo (if it doesnt have one) 10 or 11mm bosch fuel pump, massive intercooler and say hello to 150bhp and 250ftlb minimum.

xxo0pko0xx

25th December 2010, 20:22

Then pay someone like me to piss about with the fuel pump, fit a T2 turbo (if it doesnt have one) 10 or 11mm bosch fuel pump, massive intercooler and say hello to 150bhp and 250ftlb minimum.I agree with this. More power then a vts with fuel
eccomoney of a 1.1. Can't beat that :)

AXracing

25th December 2010, 21:19

I agree with this. More power then a vts with fuel
eccomoney of a 1.1. Can't beat that :)

LOL sadly it does not work like that. The Saxo 1.1 gets better fuel economy then the 306 1.9td in standard trim let alone tuned. Heck the late model Saxo 1.4s even get better fuel economy then the late 3061.9tds.

The 306tds had the added problem that it is not exactly quick to start with. The 1.9td is some 1 to 4 seconds slower to 60mph then a baby 989cc Saxo. So tuning a 306td may give some one bragging rights at the pub about it having 150bhp but off the lights even a little Saxo West Coast would still give it a run for its money.

KrisB

25th December 2010, 21:24

I see you fail to mention the torque though, which i didnt forget... All well and good talking about bhp 'in the pub' but you don't get bhp without torque, the only disadvantage with a diesel is they run out of puff at 4.5k, although with the right mods to the fuel pump you can get them revving to 6k, although it's a tad risky.

My dturbo will honestly rinse a vtr, probably not a vts, despite the fact it's still on a 9mm pump, tmic and a medioca tune.

Have you ever been out in a dturbo?? I can guarantee a west coast certainly wont give it a run for it's money and sure as hell won't return 45mpg minimum, even with a 12st right foot being pushed through the drivers floor.

If anyone wants a ride in a tuned dturbo then i can easily arrange it for you. The proof is in the pudding.

wicked-vtr

25th December 2010, 21:37

I wouldn't knock a ride in a dturbo next time your working on my car kris, im considering Getting a hdi or a dturbo for my next project

KrisB

25th December 2010, 21:40

Alright then no probs, i'll whip you out in mine sometime. If you're lucky i may have another customer to hand with a dturbo thats had plenty of work done and craving a bigger turbo.

I know all the 306 lot are reading this thread and the only thing i can say is to find darrenjlobb on youtube. Say no more. 213.8 bhp & 245.5 lbft can;t go wrong with that IMO. Certainly not from an old oil burner.

Ruan

25th December 2010, 21:47

I'm of course going to get ripped for this, because it's crap and it's a Diesel, but there's not many cars I know of that you can get 55hp and +100lb.ft Torque (It dynoed at RS Tuning at 146bhp and 250lb.ft) for £50 of mods (decat/backbox done by myself, a few choice mods to the fuel pump and a gaffer taped on air filter...)

And do 0-60 in around 7.6-8 seconds, take it how you will, I'm sure the stopwatch warriors will be out in full force any second to time it at half an hour, because of course a Diesel couldn't do that...

http://s285.photobucket.com/albums/ll58/Ruan_Ellis/?action=view&current=DT060.mp4&newest=1

AXracing

25th December 2010, 22:07

Buy the sound of it you have managed to get quite a lot of power out of your car there KrisB, that or have managed to shed a lot of weight off it as your talking 306 Rallye performance. Bet that could get interesting on the snow and ice.

45mpg is very impressive indeed. It's similar to what I was getting from a standard 306td many moons ago. I guess a lot of it comes down to how some one drives. Is your mileage calculated from actual fuel used or just the on board computer?

I did not mention peak torque as it is an irrelevance when it comes to performance. Power is the amount of torque produced in a given time and this is what gives you your go. An example of this is the 407 they did a 2 litre petrol and diesel turbo model with very similar power and they had similar perforce even though the diesel model had much greater power.

Ruan

25th December 2010, 22:16

Rallye performance...?!

213bhp vs 167bhp... That's quite a big jump!

And with the 146bhp I used to have, I could easily get 50-55mpg on the motorway and do 30-70 in around 6 seconds...

AXracing

25th December 2010, 22:23

Rallye performance...?!

213bhp vs 167bhp... That's quite a big jump!

Ruan I think 213 bhp is darrenjilobbs car not KrisBs. My comment about it being akin to the 306 Rallye performance was about KrisBs car. I would bet the 213bhp car would go even faster.

darrenjlobb

25th December 2010, 22:59

Someone mensioned my name?

XUD FTW!

http://darrenjlobb.co.uk/projects.php?subj=4 and scroll down for diesel boost!

saxo-parts

25th December 2010, 23:30

cheers darren, makes a good read, love diesel engines in general and like to read about experiments!!!! clear you've put a lot of thought and time into the 306

sambarker

26th December 2010, 01:19

I think diesels are shit. My 1.1 would beat it anyway especially with my mod chip, electric fan air filter and my cherrybomb exhaust. must be 100bhp easy. And it only weights like 500kg's so thats like 200bhp a tonne!

outrage_uk

26th December 2010, 03:17

Someone mensioned my name?

XUD FTW!

http://darrenjlobb.co.uk/projects.php?subj=4 and scroll down for diesel boost!

...And there was me thinking I was treating my XUD when I put a tenner of V-Power Diesel in the tank instead of Asda veggie oil at 70p a litre!

I too had the curse of a hole in the block - finished off the old 306 phase :n:

darrenjlobb

26th December 2010, 10:35

s555dan

26th December 2010, 20:21

Someone mensioned my name?

XUD FTW!

http://darrenjlobb.co.uk/projects.php?subj=4 and scroll down for diesel boost!

Absoloutly epic build mate.

good luck with S/C

is there such thing as a re-inforced block? would save you hastle :afro: