Power capabilities of a TDO5 20g turbo
#1
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
I'm going to look at a classic STI RA this week which is running a 2.5 conversion with TD05 20g and supporting ancillaries.
Owner has a rolling road print out of 400/400 which seems very impressive, I don't know what sort of boost it's running to achieve this but owner said the map was done with pump fuel (tescos or shell) and doesn't need octane booster.
My question is, will a TD05 20g run these sort of power figures safely? Or is it going to melt after 1000 miles![Big Grin](https://www.scoobynet.com/images/smilies/biggrin.gif)
Any help/comments very much appreciated as I don't want to buy a time bomb.
Chris
Owner has a rolling road print out of 400/400 which seems very impressive, I don't know what sort of boost it's running to achieve this but owner said the map was done with pump fuel (tescos or shell) and doesn't need octane booster.
My question is, will a TD05 20g run these sort of power figures safely? Or is it going to melt after 1000 miles
![Big Grin](https://www.scoobynet.com/images/smilies/biggrin.gif)
Any help/comments very much appreciated as I don't want to buy a time bomb.
Chris
#3
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
That's what I was thinking, I don't like running cars on their limits, would rather have a nice safety margin.
It's the 400 torque that was also slightly worrying, although I assume the 2.5 helps.
Not sure what 2.5 is in it, but assuming it's the lowest spec is 400/400 going to last?
Hmmmmmmmm, decisions, decisions.
It's the 400 torque that was also slightly worrying, although I assume the 2.5 helps.
Not sure what 2.5 is in it, but assuming it's the lowest spec is 400/400 going to last?
Hmmmmmmmm, decisions, decisions.
#4
Former Sponsor
Join Date: Dec 2005
Location: 10.68 QT mile in 2007 2.33 Type R ** Current 2002 Spec C 2.33 Track prepped.
Posts: 1,658
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
If it has a safe rev limit it should be fine, however aftermarket pistons would be my choice.
Figures will vary form 370-420 depending on the dyno and other factors. But To be honest the 20g on a well set up 2.5 is a great drive and very reliable and i think figures will soon come second to that once the car has been driven.
Figures will vary form 370-420 depending on the dyno and other factors. But To be honest the 20g on a well set up 2.5 is a great drive and very reliable and i think figures will soon come second to that once the car has been driven.
#5
Scooby Regular
Join Date: Feb 2004
Location: Going round in circles in a Mini
Posts: 5,485
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
That's what I was thinking, I don't like running cars on their limits, would rather have a nice safety margin.
It's the 400 torque that was also slightly worrying, although I assume the 2.5 helps.
Not sure what 2.5 is in it, but assuming it's the lowest spec is 400/400 going to last?
Hmmmmmmmm, decisions, decisions.
It's the 400 torque that was also slightly worrying, although I assume the 2.5 helps.
Not sure what 2.5 is in it, but assuming it's the lowest spec is 400/400 going to last?
Hmmmmmmmm, decisions, decisions.
I run a 2.5 with 20g, on std 2.5sti short motor, and had the same concerns when having it built, however by setting a sensible rpm limit , mine set at 7k, and with det free mapping on pump fuel, this should be very reliable. The power comes in much sooner with a 2.5, and the torgue is great, so losing a few rpm really is not an issue.
A 2.5 with a 20G, in a classic with low gearing is awsome!
![Thumb](https://www.scoobynet.com/images/smilies/thumb.gif)
#6
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
Cheers for the comments guys.
Don't get me wrong, I'm not a pub figure sort of person, I couldn't give a monkey's what the actual bhp/torque is, was just concerned that perhaps this sort of power was a bit much for the 20g.
Car has also got a jdm new age 6 speed box mated up to the 3.9 diff so acceleration should still be electric although I don't think it utilises the DCCD any more.
Will report back once I've viewed the car, has nice bits, brembo's up front, blistein suspension so seems to have all been done properly and engine has only done approx 1500 miles.
Don't get me wrong, I'm not a pub figure sort of person, I couldn't give a monkey's what the actual bhp/torque is, was just concerned that perhaps this sort of power was a bit much for the 20g.
Car has also got a jdm new age 6 speed box mated up to the 3.9 diff so acceleration should still be electric although I don't think it utilises the DCCD any more.
Will report back once I've viewed the car, has nice bits, brembo's up front, blistein suspension so seems to have all been done properly and engine has only done approx 1500 miles.
#7
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
Hmmmmmmm,
checking with the garage that mapped the car (who are very reputable I might add
) It's seems that power was around 380 and torque about 400.
But........the turbo might only be an 18g and not a 20g as previously thought. Will this melt running this sort of power?
On the plus side, it looks like the 2.5 was built with forged internals![Smile](https://www.scoobynet.com/images/smilies/smile.gif)
Chris
checking with the garage that mapped the car (who are very reputable I might add
![Smile](https://www.scoobynet.com/images/smilies/smile.gif)
But........the turbo might only be an 18g and not a 20g as previously thought. Will this melt running this sort of power?
On the plus side, it looks like the 2.5 was built with forged internals
![Smile](https://www.scoobynet.com/images/smilies/smile.gif)
Chris
Trending Topics
#9
Moderator
iTrader: (4)
Join Date: Jul 2004
Location: The Terry Crews of moderation. P P P P P P POWER!!
Posts: 18,687
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
Hmmmmmmm,
checking with the garage that mapped the car (who are very reputable I might add
) It's seems that power was around 380 and torque about 400.
But........the turbo might only be an 18g and not a 20g as previously thought. Will this melt running this sort of power?
On the plus side, it looks like the 2.5 was built with forged internals![Smile](https://www.scoobynet.com/images/smilies/smile.gif)
Chris
checking with the garage that mapped the car (who are very reputable I might add
![Smile](https://www.scoobynet.com/images/smilies/smile.gif)
But........the turbo might only be an 18g and not a 20g as previously thought. Will this melt running this sort of power?
On the plus side, it looks like the 2.5 was built with forged internals
![Smile](https://www.scoobynet.com/images/smilies/smile.gif)
Chris
![Smile](https://www.scoobynet.com/images/smilies/smile.gif)
#10
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
Thanks guys,
I'm talking to the garage that built the car and the seller is trying to find out for sure whether it's an 18g or 20g.
At present, I'm not interested in gaining more power really, just want to make sure the car will run safely.
So provided a bog standard 2.5 with an 18g can run 380/400 I'm quite happy as that seems to be the worst case scenario if the seller can't produce any more info. For the spec of the car and the price, I'd certainly be happy with this set up![Smile](https://www.scoobynet.com/images/smilies/smile.gif)
If it is a 20g with forged internals then all the better![Big Grin](https://www.scoobynet.com/images/smilies/biggrin.gif)
Chris
I'm talking to the garage that built the car and the seller is trying to find out for sure whether it's an 18g or 20g.
At present, I'm not interested in gaining more power really, just want to make sure the car will run safely.
So provided a bog standard 2.5 with an 18g can run 380/400 I'm quite happy as that seems to be the worst case scenario if the seller can't produce any more info. For the spec of the car and the price, I'd certainly be happy with this set up
![Smile](https://www.scoobynet.com/images/smilies/smile.gif)
If it is a 20g with forged internals then all the better
![Big Grin](https://www.scoobynet.com/images/smilies/biggrin.gif)
Chris
#11
#12
Scooby Regular
Join Date: Jan 2007
Location: clearfinish.co.uk
Posts: 188
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
I own a 2.5 WRX with a VF43(STi 9 UK Turbo) fitted, my figures are 377Bhp and 380lb ft, I'd say you'll have no problems with a 20G at 400/400 figures from the 2.5, I know one of our members(Tyneteesscoobies) with a 2.0 bugeye that has an 18G fitted and he has around 380Bhp and that has run like that for 2-3years
![Smile](https://www.scoobynet.com/images/smilies/smile.gif)
#13
Scooby Regular
iTrader: (2)
Join Date: May 2000
Location: Class record holder at Pembrey Llandow Goodwood MIRA Hethel Blyton Curborough Lydden and Snetterton
Posts: 8,626
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
If its got the std gearbox I'd be concerned about its limits too
400 Lbft is going to test any OE 5 speed, be it STI / 754 etc
400 Lbft is going to test any OE 5 speed, be it STI / 754 etc
#14
Scooby Regular
Join Date: Jun 2004
Location: :TyneTeesScoobies
Posts: 302
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
I'm currently running a 20G on a 2.5 with supporting mods on a V5 STI Type R, current power figures are 374bhp and 375ft/lbs, added a few more mods and getting re-mapped again in 2 weeks and hoping for around 400/400
![Wink](https://www.scoobynet.com/images/smilies/wink.gif)
#15
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
As mentioned above, it's got a JDM new age 6 speed box.
After driving the car I had to buy it, absolutely flew. The seller was very trusting, just chucked me the keys and said knock yourself out
![EEK!](https://www.scoobynet.com/images/smilies/eek.gif)
Went for a quick blast and was blown away by the performance. When I got back the seller said "I forgot to tell you it's only in low boost running 1.4 bar" !!!!!!
High boost was set for about 1.75, haven't tried it at this, don't think I need to, lol .
Just need to work out exactly what it is now, seems to have a sti ra vin no but no roof vent
![Confused](https://www.scoobynet.com/images/smilies/confused.gif)
Needs a little tidying but the engine and gearbox were superb.
Chris
#16
Scooby Regular
iTrader: (2)
Join Date: May 2000
Location: Class record holder at Pembrey Llandow Goodwood MIRA Hethel Blyton Curborough Lydden and Snetterton
Posts: 8,626
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
Didn't read that bit about the gearbox, lol
Looks like a similar spec to mine, bar the turbo - which will be a 20g v.soon.
Enjoy the car - 20g 1.75 bar on a 2.5? blimey!
Looks like a similar spec to mine, bar the turbo - which will be a 20g v.soon.
Enjoy the car - 20g 1.75 bar on a 2.5? blimey!
#17
![Default](https://www.scoobynet.com/images/icons/icon1.gif)
![Big Grin](https://www.scoobynet.com/images/smilies/biggrin.gif)
Thread
Thread Starter
Forum
Replies
Last Post
MightyArsenal
Wheels, Tyres & Brakes
6
25 September 2015 08:31 PM