t70

[D1 WTF]

can anyone give me info on a T70,  i wanna know everything, what power it will give, what sort of lag, is it smooth.  everything....!!!!!!!:Giggle
i will be running a large!! street port, flywheels, clutch, 1600 secondary injectors (i hope), if this helps
 
cheers in advance

[Jit]

not enough!! Youll need more than that to come away victorious from my challenge!!

[mx1311]

depends on what t70 it is.

the list of specs are endless

people sell them on fleabay with all different kinds of compressor wheel/back housing combos etc

what make is it??
ball bearing of wet float oil bearings???
housing sizes???

etc etc

[sadgoth]

oi, taking my idea! I was going for a T70 (changed that to a T72 now ) as has been said, does depend on the spec really.

[A7NTY]

Arent turbonetics turbo\'s known for being the worldwide haven of turbo lag?

[sadgoth]

I wouldn\'t know, Tim hasn\'t fitted mine yet! All things are relative, Ross\'s Drag car has more lag I suspect! The T72 should be on song by about 3700 and full boost by about 6000 from what I have read. (note to self: ask Tim or Matt to increase the rev limiter to 8500!)

[iaint]

T70 with 1.15 a/r should be good for ~400 rwhp at 1.0bar.  Up that to 1.35 and 500rwhp is possible at ~1.2 bar.

Spool will depend on many things but with big porting a decent flowing exhaust it\'ll boost from 4500+.

I\'ve got some issues to work out with my setup (1.15 a/r) to do with a restrictive exhaust and possibly oversized manifold causing boost to arrive a bit later than I\'d like but it makes 350rwhp at 0.9 bar which is currently limited by the intercooler\'s flow rate.

New backbox should see power arrive from a little after 5k rpm.  new intercooler will see 400rwhp.

power delivery is very smooth but quite brutal.  I\'ve not dared run it on high boost (1.0 bar) yet!  Power curve is flat from 5800 to 8000rpm (poss beyond but the graph runs out!!).

It\'s a good turbo for the cost but there are better for more money...

[iaint]

Arent turbonetics turbo\'s known for being the worldwide haven of turbo lag?

Depends on a few factors, like anything else the rest of the system must work with the turbo\'s characteristics.  Mine should be much better once I sort the exhaust but it\'s a bit too laggy right now...

[John Yorke]

Depends on a few factors, like anything else the rest of the system must work with the turbo\'s characteristics.  Mine should be much better once I sort the exhaust but it\'s a bit too laggy right now...

I detect a touch of negativity Iain:Nono!  I am sure once the \'other\' issues are sorted she will fly:Thumbs-up It is time peeps understood that whacking a big turbo onto your engine is only half of it, the turbo needs to be matched to your porting/ setup otherwise you end up with a pile of poo:eek:  It is a bit like people talking about their handling - most people have different ideas as to what is the perfect setup - slam the car to the ground without propper damping and it will be crap - so on and so on.

[D1 WTF]

i believe it is a turbonetics, i will find out the hot side size in about an hour.  i will be running a WGT v-mount intercooler.
what sort of revs does something like a t04e boost at?
at the sound of it that seems quite laggy, is it going to really be huge amounts different from stock twins?
for back out/drifting etc, can you get used to them pretty quickly or is it always going to be a bit brutal, incomparision to twins?

i was going to go for a gt35/40 but apparently they have had alot of faulty ones, as the ball bearings cant hack the temperature.  
how much bigger is this than the gt35/40 etc?

[A7NTY]

T70 with 1.15 a/r should be good for ~400 rwhp at 1.0bar.  Up that to 1.35 and 500rwhp is possible at ~1.2 bar.

Spool will depend on many things but with big porting a decent flowing exhaust it\'ll boost from 4500+.

I\'ve got some issues to work out with my setup (1.15 a/r) to do with a restrictive exhaust and possibly oversized manifold causing boost to arrive a bit later than I\'d like but it makes 350rwhp at 0.9 bar which is currently limited by the intercooler\'s flow rate.

New backbox should see power arrive from a little after 5k rpm.  new intercooler will see 400rwhp.

power delivery is very smooth but quite brutal.  I\'ve not dared run it on high boost (1.0 bar) yet!  Power curve is flat from 5800 to 8000rpm (poss beyond but the graph runs out!!).

It\'s a good turbo for the cost but there are better for more money...

Iain, how late is power coming in at the moment? Cant say we found much difference in lag between a restrictive (quiet) and non restrictive back box.

Our TO4Z with a half bridge port gives 400bhp at the wheels at 1.0 bar boost and full boost from about 3500rpm or less. Its a lovely turbo but I expect a fair bit more cash than the Turbonetics one, the turbo alone in HKS form is £1500 or so.

Ant.

[Ed_RX7]

I detect a touch of negativity Iain:Nono! I am sure once the \'other\' issues are sorted she will fly:Thumbs-up It is time peeps understood that whacking a big turbo onto your engine is only half of it, the turbo needs to be matched to your porting/ setup otherwise you end up with a pile of poo:eek: It is a bit like people talking about their handling - most people have different ideas as to what is the perfect setup - slam the car to the ground without propper damping and it will be crap - so on and so on.

 
spot on john...i got 425rwhp on mine with a 1.0 a/r at about 1.2 and my ports are not matched and they are pretty small........(not for long.... :Thumbsup! ).... watch this space...suprised yours is so laggy ian...is it because you are just no used to it?....thats why i went for a 1.0...felt it was the best comprise for streetable power.....and with a better/bigger (cough) street port and some other bits and pieces........we shall see...:eek

[iaint]

John/Ed ,

Not really negative, it\'s something that we (re:worx and my chequebook ) are working on.  Geff absolutely bust a gut to get things working as nicely as they are but there\'s a bit of room for improvement!

Replacing my silenced mid-pipe for a silenced but less restrictive one made a peak power difference of 75rwhp which is pretty amasing.  The current backbox is very restrictive (hence being damn quiet) and we\'re also looking at changing the manifold to something a little smaller if we can\'t get power earlier.

Looking at the graph I\'m hitting
200rwhp @ 5000rpm
280rwhp @ 5500rpm
320rwhp @ 5900rpm
340rwhp @ 6800rpm
350rwhp @ 7400rpm

peak was 353rwhp @ 7000rpm

I\'ve upped the rev limit to 8500 on Geff\'s advice to reduce the risk of hitting it when hooning but I\'ve got very usable power from 5.5k to over 8k.  Ideally I\'ll be hitting 80% of peak power by 5krpm (so 280 in this example).

My target is 400rwhp so I\'d like to hit 320 by 5k rpm once the intercooler\'s sorted...  Should be ~1.0 bar boost too

[iaint]

Iain, how late is power coming in at the moment? Cant say we found much difference in lag between a restrictive (quiet) and non restrictive back box.

Our TO4Z with a half bridge port gives 400bhp at the wheels at 1.0 bar boost and full boost from about 3500rpm or less. Its a lovely turbo but I expect a fair bit more cash than the Turbonetics one, the turbo alone in HKS form is £1500 or so.

Ant.

Had a conversation with Geff about popping the engine out to have the ports extended a tad so that might well be a winter project...

[John Yorke]

Had a conversation with Geff about popping the engine out to have the ports extended a tad so that might well be a winter project...

You know it makes sence:Thumbs-up