Engine Differences between S70 t5 and 2.5t

Ruthlessgk · Dec 6th, 2010, 00:39

Where does the difference in power come from?
240bhp vs 190hp what is the difference between the 2 engines and how hard is it to get 250bhp out of a 2.5t s70?
Is it a different turbo so just a case of a high pressure turbo or what.
Cheerz in advance
Zaff

mrdave2003 · Dec 6th, 2010, 08:23

Basically, 2.5 obviously larger bore cylinders but has a smaller light pressure turbo than the T5. ECU may also be slightly different. I'm not sure about cams etc as to whether they are any different. Given that the later V70 and S60 R get 300bhp out of a 2.5 I'd say 250 is do able. A decent ECU map would see it go up quite a lot without doing any major modding.

ECU map, larger turbo, exhaust, air filter I would say would certainly get you up to near the 250 mark or maybe beyond. I would imagine its been talked about before though or done before so a search of the forum would throw up some useful info too.

FaKaWi · Dec 6th, 2010, 08:57

2.5T = 2.5L, high compression engine with a low pressure turbo
T5 = 2.3L, low compression engine with a high pressure turbo

Ruthlessgk · Dec 6th, 2010, 12:03

now from what ive read the problem with the 2.5t is that as its a bigger bore the linings are thinner so if too much power is put through it will break which is why the t5 has a 2.3l. Am I right or is this nonsense?

Chris_Rogers · Dec 6th, 2010, 17:11

Quite correct, the early 2.5T is a bit weak even as standard, I'd not attempt to tune one.
The latter 2004> is s different matter.

deathrider311271 · Dec 6th, 2010, 18:36

hi

i have a 2.5T with approx 240bhp, my mods r: ECU Remap, Scorpion exhaust, Decat pipe, K&N cone filter NGK Platinum plugs, now if mine goes bang i will fit 2.4 liners with a later 2.4 T5 headgasket with a larger turbo i would also fit 2.4 T5 pistons thus lowering the compression, or so i have been told.

cheers

t5_monkey · Dec 6th, 2010, 18:48

Assuming it's a decent block and you tune it properly.

You'll be fine with up to 300@crank on the 2.5 T

some have bore defects (bores can split even un-tuned) however, tuning it may highlight such a deficiency.

Ruthlessgk · Dec 6th, 2010, 23:38

its ok ive just bought myself a T5

thanks for all the info guyz

Dec 6th, 2010, 00:39	#1
Ruthlessgk Senior Member Last Online: Feb 5th, 2019 22:24 Join Date: Nov 2010 Location: Sheffield	Engine Differences between S70 t5 and 2.5t Where does the difference in power come from? 240bhp vs 190hp what is the difference between the 2 engines and how hard is it to get 250bhp out of a 2.5t s70? Is it a different turbo so just a case of a high pressure turbo or what. Cheerz in advance Zaff

Dec 6th, 2010, 18:48	#7
t5_monkey Monkeying Around Last Online: Mar 13th, 2016 20:05 Join Date: Mar 2010 Location: York	Assuming it's a decent block and you tune it properly. You'll be fine with up to 300@crank on the 2.5 T some have bore defects (bores can split even un-tuned) however, tuning it may highlight such a deficiency. __________________ Release the Monkey inside of you >>> Trunk Monkey

Dec 6th, 2010, 08:23	#2
mrdave2003 Premier Member Last Online: Apr 1st, 2024 11:08 Join Date: Feb 2007 Location: Sudbury (Suffolk) View Photos By: mrdave2003	Basically, 2.5 obviously larger bore cylinders but has a smaller light pressure turbo than the T5. ECU may also be slightly different. I'm not sure about cams etc as to whether they are any different. Given that the later V70 and S60 R get 300bhp out of a 2.5 I'd say 250 is do able. A decent ECU map would see it go up quite a lot without doing any major modding. ECU map, larger turbo, exhaust, air filter I would say would certainly get you up to near the 250 mark or maybe beyond. I would imagine its been talked about before though or done before so a search of the forum would throw up some useful info too.

Dec 6th, 2010, 08:57	#3
FaKaWi Master Member Last Online: May 11th, 2017 15:36 Join Date: Jan 2009 Location: Where the.....	2.5T = 2.5L, high compression engine with a low pressure turbo T5 = 2.3L, low compression engine with a high pressure turbo

Dec 6th, 2010, 12:03	#4
Ruthlessgk Senior Member Last Online: Feb 5th, 2019 22:24 Join Date: Nov 2010 Location: Sheffield	now from what ive read the problem with the 2.5t is that as its a bigger bore the linings are thinner so if too much power is put through it will break which is why the t5 has a 2.3l. Am I right or is this nonsense?

Dec 6th, 2010, 17:11	#5
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	Quite correct, the early 2.5T is a bit weak even as standard, I'd not attempt to tune one. The latter 2004> is s different matter.

Dec 6th, 2010, 18:36	#6
deathrider311271 I've Been Banned Last Online: Jun 21st, 2022 19:26 Join Date: Mar 2010 Location: Grimsby	hi i have a 2.5T with approx 240bhp, my mods r: ECU Remap, Scorpion exhaust, Decat pipe, K&N cone filter NGK Platinum plugs, now if mine goes bang i will fit 2.4 liners with a later 2.4 T5 headgasket with a larger turbo i would also fit 2.4 T5 pistons thus lowering the compression, or so i have been told. cheers

Dec 6th, 2010, 23:38	#8
Ruthlessgk Senior Member Last Online: Feb 5th, 2019 22:24 Join Date: Nov 2010 Location: Sheffield	its ok ive just bought myself a T5 thanks for all the info guyz

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