hey peeps. just doing research atm.

just wondering what size turbo would suit a 3.8l single setup and a twin setup. only looking at running 9psi to start with but eventually do a full rebuild.

also for those whom have had there magnas turboed how much did it cost to get youre manifolds made up.

cheers

Using a turbo with a rear housing with a .90 or 1.00 A/R ratio would be ideal for a single setup. Something like a GT35/40 should do the trick.

If you're after something second hand the extra capacity of the 3.8 engine should accomodate a Falcon turbo quite nicely where as the 3.5's are just a little to small capacity wise to use these.

As for twins something similar to what is run on the Nissan RB20 should do nicely for a twin setup.

why do you want to turbo it , when there is an easy supercharger option available ?
instant power, no lag , and the sky is the limit with power output.

im just looking at my options for now.

Using a turbo with a rear housing with a .90 or 1.00 A/R ratio would be ideal for a single setup. Something like a GT35/40 should do the trick.

If you're after something second hand the extra capacity of the 3.8 engine should accomodate a Falcon turbo quite nicely where as the 3.5's are just a little to small capacity wise to use these.

As for twins something similar to what is run on the Nissan RB20 should do nicely for a twin setup.

cheers

I think Evo 7 turbos would run pretty well on a twin turbo setup.

Especially considering you can get some decent ones for around $250 a pop. Bang for bucks and will prob perform a little better than the garrets from the RB20

I got nissan 350Z manifolds for sale atm. If your keen on doing a single conversion, these "line up" with the 6G7 heads. All they need is a manifold plate made up and the ends flared. Custom manifolds to the turbo would set you back about $1100. I'm asking $200 for these manifolds :)

I think Evo 7 turbos would run pretty well on a twin turbo setup.

Especially considering you can get some decent ones for around $250 a pop. Bang for bucks and will prob perform a little better than the garrets from the RB20

Evo 7's come with a TD05 16G turbo which would be far too big to run in a twin turbo setup on a 3.8L capacity.

You're better off with something like what Black Beard used, twin GT28's for fast spool but still good top end. Single turbo I would follow what ARS55 said.

why do you want to turbo it , when there is an easy supercharger option available ?
instant power, no lag , and the sky is the limit with power output.

Well...

1. Superchargers create more power by sacrificing a small amount to power the charger itself, where turbochargers use "spare" energy created by exhaust gases and do not "steal" any power from the engine to create more.
2. Economically, the turbocharger is more efficient as it is not always "on-boost", this makes for better highway economy and better grandpa driving economy.
3. Turbo's simply sound better then superchargers, more likely to turn heads :) I am a little biased on this though :)
4. A turbo is capable of producing a much higher power output then a supercharger

Well...

1. Superchargers create more power by sacrificing a small amount to power the charger itself, where turbochargers use "spare" energy created by exhaust gases and do not "steal" any power from the engine to create more.
2. Economically, the turbocharger is more efficient as it is not always "on-boost", this makes for better highway economy and better grandpa driving economy.
3. Turbo's simply sound better then superchargers, more likely to turn heads :) I am a little biased on this though :)
4. A turbo is capable of producing a much higher power output then a supercharger

Life, not trying to insult you bud but before you post research mate as you have just wasted 30 seconds of my time reading total rubbish

A turbo DOES sacrifice power, you are forcing gas through a small area thus causing a restriction.

A turbo works on the expanding cooling exhaust gas to spin a turbine, this does cause a restriction and thus power loss however the gain from the turbo far out weighs the loss. Turbo's are not always on boost, it depends on how good the match is to the engine and everything around it. To give you an idea, my old 13bt was on boost from about 1800rpm, below that was nominal because the turbo was so large and it hit full boost (18psi) at around 2400ish rpm from memory.

Super cheargers sound awsome as well, can actually be switched off when not required (well some of them anyway) and are generally a far neater fit depending on brand and model.

So both have advantages, personally I prefer turbo but then agian most of my experience is with turbo so I am biased that way.

OP, pretty much exactly what ARS55 said, 9psi is not ground breaking and treated properly I fail to see why the engine would not cope provided of course your fuel system is done correctly (no I am not talking about some rubbish 7th injector either)

PS the 380 has fly by wire and this is not compatible with the turbo. More $$ and something else to think about. My 2 bobs worth.

PS the 380 has fly by wire and this is not compatible with the turbo. More $$ and something else to think about. My 2 bobs worth.

wtf why would fly by wire not work with a turbo. falcons work just fine.

Yeah I'm wondering why too since my blower runs fine????

A turbo DOES sacrifice power, you are forcing gas through a small area thus causing a restriction.

My bad, question here is does it use more or less power then a supercharger in order to power itself?

I believe the other points still stand though (esp economy) since afaik none of the magna chargers can be "switched off".

I went to a few places asking about turbo conversions as apposed to a supercharger. There was an equal for and against on the matter. I was told that when doing a turbo set-up going to cable throttle would be a better road to go and that was by three different places (im guessing they prob were looking for more money with the custom manifold etc). I asked why not do it the same way as the Fords and was told that the factory ecu may not be able to handle it and as no one has tried the time and money spent on trial and error could be astronomical. I was told with a turbo install, custom cable throttle, intake manifold and turbo manifold along with full ecu upgrade would be required...for starters and thats only if the internals could handle it.
Just my thoughts on the matter after doing a little research myself.

does anyone know what turbos the rpw setups use. cheers.

does anyone know what turbos the rpw setups use. cheers.

just looked on there website the twin setup is 2 X Garret GT-25 Ball bearing turbo with gaskets. Rated to 220hp set to 5 psi boost http://www.rpw.com.au/shop/index.php?option=com_virtuemart&page=shop.product_details&flypage=shop.flypage&Itemid=31&category_id=92&product_id=777 heres the link

just looked on there website the twin setup is 2 X Garret GT-25 Ball bearing turbo with gaskets. Rated to 220hp set to 5 psi boost http://www.rpw.com.au/shop/index.php?option=com_virtuemart&page=shop.product_details&flypage=shop.flypage&Itemid=31&category_id=92&product_id=777 heres the link

cheers. so that would equal 10 psi correct.

According to this RPW page: http://www.rpw.com.au/shop/index.php?option=com_content&task=view&id=65&Itemid=40

it's twin Garret GT-28 ball bearing turbos.

KJ.

nope, the turbos have their boost controlled by air operated actuators, if there is any more than 5psi between the turbo outlets and the engine they will automatically slow the turbos down by bypassing the exhaust gasses that spin them.

Turbo's are not always on boost, it depends on how good the match is to the engine and everything around it. To give you an idea, my old 13bt was on boost from about 1800rpm

I think Life was meaning a turbo isn't always on boost white cruising. Because it isn't on boost while sitting on a highway at a steady 100km/h. Whereas a supercharger is.

Turbo's only produce boost under load/acceleration.

Better economy from the turbo? Maybe. But it'd make a bee's dick of difference, and if you drive a performance vehicle, the extra fuel consumption isn't really at the top of your list of worries :)

sorry for all the questions.

what model garret turbos do the stock r33 use.

just trying to work out what these are

link (http://cgi.ebay.com.au/NISSAN-R33-Skyline-GT-R-FACTORY-GARRET-Turbo-kit_W0QQitemZ230419998801QQcmdZViewItemQQptZAU_Car _Parts_Accessories?hash=item35a61a2851)

The use a T3'ish model. The GTSt that is.

The ones linked above are GTR turbos (twin setup, obviously)