Just curious what people out there have achieved from there 2.5's... as will be sending my engine to Teg sport early next year to start work on the 2.5 rebuild....
What bhp/torque have you got from your 2.5's?
And what mods have been done?

 

Suggest you go to Projects section also and do some searches on '2.5'

Mild seems to give 400x380 ish with a TD05 20g + support mods + mild cheque
Wild seems to give 540 x 450 ish with rotated Garrett + support mods + big cheque

Depending on the car, a gearbox will be needed and always a better than stock clutch.

If you are lucky one of the '2.5' guys will respond, John Banks in particular. Search on that name.

Graham.

 

bttt, cheers will have a look...

 

You'll get more results, info, specs etc for the 2.5 if you look on the Nasioc website. Plenty info there to have a think about.

 

this is my 2.5 type R...md321,3"aps decat,aps top mount.etc.



this is my mates 2.5 wagon version 4,vf22,3"aps decat.
both cars have powerstation equal length headers,blitz sbcid boost controlers,lightweight flywheels.

 

Killer torque!

Graham.

 

What boost are you running, R25 sti?

 

max boost is 1.3 bar!

 

Just make sure you go to a good tuner.

My 2.5 - well the tuner had problems! lmfao. Car has now come away from him to be sorted properly!

 

scoobyclinc did all the work to my friends and my car,although abit on the slow side we are both very happy with the results! Andy and mark built the engines and pat mapped them!..

 

2.5 std internals, STI3 heads with a TD05/20g based turbo and supporting mods. Running 1.3 bar.
376bhp / 372lbft (with a slipping clutch)

Loads more to come with more mapping

Self built and mapped by Pat

 

Hope Alans ok with me posting this.
Slight punch of 1.4bar before 4000rpm, dropping to 1.2 bar at 4400rpm. Standard Injectors maxed out at raised fuel pressure.
2.5 uprated internals, STI7 JDM heads, TD06 based turbo.
New injectors will be going in once Scott Lawson delivers to Alan (2 weeks now ), then its 1.4/1.5bar to redline!

 

Bit big

The graph doesnt do it justice. In 6th gear it has 1bar before 2800, and full boost by 3000, and it just pulls like a train.

 

Erm, have you got the right Scott? I dont do injectors!!

 

Looking forward to getting my hands on this one again

ps Re the injectors It's Scott Lawson (flat4online)

Andy

 

Why does everyone seem to think that the 2.5 is such a good engine to tune?
(well to a certain point )
If you look, the most powerful ones out there are either 2ltr or 2.33 and there is a reason for it

Tony

 

2.5 is ideal for 400/400 though, 2.0 is sweet with a wide power band at 350/350. Regards the 2.33, just add those 2 together

Andy

 

Ah Megabusa!! so you are Scott Lowe...

I need some bonnet lifters, after seeing Adam's (and the price!) and here that you are the man?

Back on topic....

Where's my graph

Rob

 

Rob, your order left Friday..............be with you Monday.............

cheers, alyn

 

It's an easy way to get a wide band of torque ideal for road use. There's more to power than peak figures.

 

Sorry Megabusa i meant Scott Lawson, have amended post now.

 

how much is a 2.5 litre engine?

I know thats a piece of string question, but what would a short engine be rougly eiher whole or in parts?

Alex

 

Quick on to ebay and you'll find a new one from Graham Goode for £1,300

 

 

Ignoring power readouts...what do std int'd 2.5s do on the 1/4mile?

Must say some of the graphs look very good.


Bob

 

Would imagine that a 2.0l & 2.5l with the same BHP would be simular on a 1/4 mile run as BHP is what you need for this, However you might gain a little on pickup after each gear change due to the better torque.

 

Don't under estimate the effect of torque ! A good 2.5lt, even with the same bhp as a 2.0lt, should kick the 2.0lt's backside.

Mark.

 

In theory I'd agree with you Mark but in practice it has not been the case. Maybe the extra torque off the line make the start more difficult, or they don't rev as freely ? not sure why they don't shine.
Stevens 2.5 in the same car/driver/mapper as his 2.0 didn't deliver as expected iirc. John Banks 2.5 with some 100+ bhp more than Tuk's 2.0 was barely a few 10's quicker.

Andy

 

i think the key word there is "should"

 

I think gearing, lag and speed of gearshift explain a lot between T-uk's car and my old 2.5 setup. On the road up to silly speeds there was nothing between them with each of us driving our own cars, similar on the strip except the 2.5 terminals were higher - 121mph a couple of times and more 120mphs, ET never reflected that though. So always a driver's race, and the better driver won/made up a power deficit.

A TD05 on a 2.0 is still the benchmark all rounder for me.