turbo 3.9 disco v8

[460bigblock]

dad is putting the 3.9 in his county at the moment and has two turbos sitting at home, off the sd33 engine. would this make it use a shitload more fuel or help it ? and how much power would be gained around about ?

[chimpboy]

Plenty of Rover V8s have been turboed with good results, dunno if the SD33 ones will be suitable though. I am not a turbo sort of person but I would have thought they'd be too big.

Try http://www.google.com/search?q=turbo+rover+v8 there is lots of info out there.

Jason

[KiwiBacon]

SD33 turbos are T3, comparable in size to what you'd fit to a 1.8-2 litre petrol. So two of them would work.

Being diesel turbos, they often have smaller exhaust housings so they'll spool up sooner but not have the high end kick. Being T3 based it's not a problem to swap a different exhaust housing onto them.

[Sprover]

I have a 3.9 Rover V8 running a single turbo.Its a T04 which is quite large but it has huge amounts of torque.Two smaller turbos would be perfect.You could also pick up 2 second hand turbos off a Nissan Skyline for not much money and being a later model turbo would probably work alot better.

[def90]

hey sprover do you have any figures? 3.9? torque? hp? at revs?

cheers mate

[460bigblock]

thank for help , spover what is ur fuel comsumption like ?

[Sprover]

It made 156 kw at the wheels.Max power was made at 4500rpm with no need to rev it more then that.I run a gas research throttle body which i would reccommend.It also made a huge amount of torque down low which i was really pleased with considering its a large turbo (T04).Fuel consumption was pretty good.I had a 100 litre gas tank with about 85 useable and i could get over 400km easy .In a disco it would be a bit less.I did have a dyno chart from when i did it but i lost it after about 5 min from leaving the place where i did it.Had the windows open and booted it and it flew out the window. The only thing holding me back for more easy power is my setup.Its an old school draw through system.If you were to run injection and an intercooler you have the possibility to get so much more power out of it.You sure will have fun with it!

[Geeman1978]

Hey Sprover, what size gas research throttle body and converter are you running? Can you post a pic of where you mounted the turbo and also are you running an intercooler? I am currently trying do the same thing, wanna run duel fuel setup (megasquirt v3/gas research throttle body), best of both world! I currently have bought the megasquirt v3 setup and a Holset HX35w turbo which is perfect for 3.9.
With the t04 turbo, when does boost start coming in and how much psi are you running?

Sorry about all the questions but you seem to be the only one that has done this in melbourne!

cheers Goran

[hillbilliywheelchair]

It made 156 kw at the wheels.Max power was made at 4500rpm with no need to rev it more then that.I run a gas research throttle body which i would reccommend.It also made a huge amount of torque down low which i was really pleased with considering its a large turbo (T04).Fuel consumption was pretty good.I had a 100 litre gas tank with about 85 useable and i could get over 400km easy .In a disco it would be a bit less.I did have a dyno chart from when i did it but i lost it after about 5 min from leaving the place where i did it.Had the windows open and booted it and it flew out the window. The only thing holding me back for more easy power is my setup.Its an old school draw through system.If you were to run injection and an intercooler you have the possibility to get so much more power out of it.You sure will have fun with it!

run it blow thro an add a intercooler they arnt hard to set up for boost like that eather just conect the converters and mixers breather hoses pre cooler

[discothrasher]

this sounds like a cool project

[GRIMACE]

I have a 3.9 Rover V8 running a single turbo.Its a T04 which is quite large but it has huge amounts of torque.Two smaller turbos would be perfect.You could also pick up 2 second hand turbos off a Nissan Skyline for not much money and being a later model turbo would probably work alot better.

Hey Sprover, wondering if you could elaborate on the amount of boost present at key parts of the rev range, say 2500rpm & max power at 4500rpm?
Any works done to the engine internals at all?

Reason being is I am currently fitting a Vortech supercharger to my 3.9 and am looking to run 6lb with a possibility of 9lb down the track, and as the Vortech (centrifugal) chargers have similar principals to a turbo I was curious.
Its nice to know you claim 150kw at the wheels, as I will be happy with anything over 120kw (aim low and be pleased I say )!

[Sprover]

I have a 3.9 Rover V8 running a single turbo.Its a T04 which is quite large but it has huge amounts of torque.Two smaller turbos would be perfect.You could also pick up 2 second hand turbos off a Nissan Skyline for not much money and being a later model turbo would probably work alot better.

Hey Sprover, wondering if you could elaborate on the amount of boost present at key parts of the rev range, say 2500rpm & max power at 4500rpm?
Any works done to the engine internals at all?

Reason being is I am currently fitting a Vortech supercharger to my 3.9 and am looking to run 6lb with a possibility of 9lb down the track, and as the Vortech (centrifugal) chargers have similar principals to a turbo I was curious.
Its nice to know you claim 150kw at the wheels, as I will be happy with anything over 120kw (aim low and be pleased I say )!

The motor i have is actually a high comp 3.9 motor (9.35) which i bought new about 10 years ago.I was hitting full boost by 1800 RPM with a T04 turbo which isnt small.Which is where you want your power coming in nice and early for a 4wd.Although having said that my motor is in a Rover SD1.It wasnt making any more power over about 4800 RPM but i didnt care.It had heaps of torque and was quicker then a VX R8 Clubsport
The motor is bog standard except for the turbo of course.But the main thing which made a big difference for me was a Scorcher distributor and some ICE leads.I would definately be using this ignition set up if you go supercharged.Also i had a water methanol spray set up for when on boost.You shouldnt have any problems running 6 pounds boost.But with my motor being high comp i cant run anymore then 9 pounds without an intercooler.Good luck with it all.When its up and running it will be fun to drive.
Will your motor be low comp? If so you should be able to crank some more boost into it.

[Sprover]

Hey Sprover, what size gas research throttle body and converter are you running? Can you post a pic of where you mounted the turbo and also are you running an intercooler? I am currently trying do the same thing, wanna run duel fuel setup (megasquirt v3/gas research throttle body), best of both world! I currently have bought the megasquirt v3 setup and a Holset HX35w turbo which is perfect for 3.9.
With the t04 turbo, when does boost start coming in and how much psi are you running?

Sorry about all the questions but you seem to be the only one that has done this in melbourne!

cheers Goran

G'day Goran,
I will have a look for you tomorrow.Im not running any intercooler and a pretty old school set up.A megasquirt set up is the way to go.Where abouts in Melbourne are you? If your close to Glen Waverley you can come and check it out.Let me know.
Cheers
Chris

[Geeman1978]

Hey chris, Im located in Thomastown, Im going to be building a low comp engine maximum 8.5:1, The motor in my rangie is on its last legs it think! Its losing water but can see it dripping anywhere, so I dont now if I have a head gasket problem or a cracked block/slipped liner! It idles like shit on petrol but drives really well and doesnt overheat, when you switch it to gas its perfect, so I dont know whats going on. Another problem is It also goes through a lot of oil, but doesnt smoke at all! Figure that one out for me!!! It must be the special self lubricating system that landrover installs on all there vehicles (oil Leaks)... But on a good note I picked up a second hand long block on evilbay this week for $300 thats supose to have about 200000klm on it, that will make for a perfect turbo rebuild unit! Hey Chris what side did you mount the turbo on drivers or passengers? Was it mounted high or low? Just wondering because mines a rangie softdash so my engine bay is pretty full!

Cheers Goran

[GRIMACE]

The motor i have is actually a high comp 3.9 motor (9.35) which i bought new about 10 years ago.I was hitting full boost by 1800 RPM with a T04 turbo which isnt small.Which is where you want your power coming in nice and early for a 4wd.Although having said that my motor is in a Rover SD1.It wasnt making any more power over about 4800 RPM but i didnt care.It had heaps of torque and was quicker then a VX R8 Clubsport
The motor is bog standard except for the turbo of course.But the main thing which made a big difference for me was a Scorcher distributor and some ICE leads.I would definately be using this ignition set up if you go supercharged.Also i had a water methanol spray set up for when on boost.You shouldnt have any problems running 6 pounds boost.But with my motor being high comp i cant run anymore then 9 pounds without an intercooler.Good luck with it all.When its up and running it will be fun to drive.
Will your motor be low comp? If so you should be able to crank some more boost into it.

Thanks for that information. My supercharged engine was initially a low comp. I then set out to have the comp increased but as per all engine builds, things change. In the end I switched to composite gaskets and this in effect lowers the compression ratio slightly. So my motor will be approx 7.8:1, the reason for this was to hopefully extend the life of the standard crank, rods and pistons. The rest of the motors is new/upgraded, stepped liners, injectors, stage 2 heads, cam, rockers shafts... heck everything is replaced.
I also have a meth injection setup to go on but was not going to utilise this until i stepped up the boost to 9lb.

I have soo may more questions to ask, but dont want to fill this thread with carp! I guess I will learn more as I go and hopefully I have the vehicle on the road soon. Been way past schedule for a good wheel