2.5 engine or 2.1

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Jan 29, 2011 | 04:29 PM

mazmike

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2.5 engine or 2.1

i no why poeple use 2.1 or 2.35 but what is the reason there is not many 500bhp engines cheers

Jan 29, 2011 | 04:33 PM

stevebt

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I would go with the 2.1 on a closed deck block. The 2.5 will make more torque but the 2.1 will make more power

Jan 29, 2011 | 04:38 PM

banny sti

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From: Type R

Quote:

Originally Posted by stevebt

I would go with the 2.1 on a closed deck block. The 2.5 will make more torque but the 2.1 will make more power

That all depends on the size of the turbo really.........

Jan 29, 2011 | 04:45 PM

chrisdicko

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Quote:

Originally Posted by mazmike

i no why poeple use 2.1 or 2.35 but what is the reason there is not many 500bhp engines cheers

Why isn't there many 500bhp engines? Cost.......purely cost!

Oh, I've chosen the 2.1 CDB route for my new one.

Jan 29, 2011 | 04:47 PM

C. J.

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2.35 , best of both worlds

Jan 29, 2011 | 05:12 PM

Mus

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From: will be back in another scooby in time....

the supporting mods gearbox,clutch, coilovers, breaks, anti roll bars, injectors and much more it's a big jump from 400 to 500 and it's expensive.

2.1 more for drag use 2.5 more for road use although 2.1 will make a nice road car but not as nice as a 2.5

Jan 29, 2011 | 06:04 PM

HRT

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From: Trying to balance the budget as running two Scoobies

I have both a 2184cc wrx with a GT3071 for hillclimbs and a 2.5 STi with MD321t for road use. The 2.5l is much easier car to drive in traffic. The extra torque available at lower revs makes a difference. Same power about 470bhp but the 2.5l has an extra 70ftlbs torque. I am considering a 2.5l for hillclimbs as well due to this.

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Jan 29, 2011 | 07:03 PM

oobyJu

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From: samsara

prefer my 2.5 to the original 2.0, the extra torque makes for more relaxed driving but not as free revving as the 2.0 same BHP though just not as savage

Jan 29, 2011 | 07:46 PM

dunx

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From: Slowly rebuilding the kit of bits into a car...

A friend of mine had four built 2.5's fail at 500+ bhp

He now runs a 650 bhp 2.1 bult by Alan Jeffery at Enginetuner. and it laughs at the punishment.

Guess which I'm aiming to buy currently ?

dunx

Jan 29, 2011 | 09:00 PM

#10

alcazar

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From: Rl'yeh

A 2.5?

I love mine, SO easy to drive yet it will spin all 4 wheels at 80 in the dry in 4th.

Jan 29, 2011 | 09:16 PM

#11

banny sti

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From: Type R

Stick with a newage sti 2 litre engine, im running one at 500 + and hammer the living daylights out of it!

Jan 29, 2011 | 09:25 PM

#12

Anger

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From: Surrey

I had a 2.1 fitted this week with a MD321X, JGM mapped it thursday and it maded 497bhp 437lbs/ft on V-power

Jan 29, 2011 | 09:47 PM

#13

dave_garrett

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From: STI V8 with 558bhp 580ft/lbs on V-Power (2.5 cdb)

Quote:

Originally Posted by mazmike

i no why poeple use 2.1 or 2.35 but what is the reason there is not many 500bhp engines cheers

No right/wrong answer to this one mate. Any of the above with good rods, pistons and a good builder is going to put a big smile on your face. Depends on your end goal really?

Jan 29, 2011 | 11:07 PM

#14

dunx

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From: Slowly rebuilding the kit of bits into a car...

Quote:

Originally Posted by dave_garrett

No right/wrong answer to this one mate. Any of the above with good rods, pistons and a good builder

'Aint that the truth !

dunx

Jan 30, 2011 | 01:33 AM

#15

banny sti

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From: Type R

Stay away from the cheap end of the market rods, if going for the 2.1.

Jan 30, 2011 | 01:44 AM

#16

LegacySTi

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From: Dublin, Eire

Quote:

Originally Posted by dunx

Think the only answer to thread is above.

Spot on..

Jan 30, 2011 | 10:19 AM

#17

dunx

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From: Slowly rebuilding the kit of bits into a car...

Don't get me wrong the 2.5 is quite a beast, but haven't seen one last ( at my budget ) running 550 bhp. So a slightly less torquey 2.1 that will rev to 8K rpm is fine for me...

dunx

Jan 30, 2011 | 12:54 PM

#18

Shaun

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From: 5 beats 4 - RS3 Rulez!!!

Quote:

Originally Posted by dunx

A friend of mine had four built 2.5's fail at 500+ bhp

High power 2.5 builds can and do last...... my Spec C was testiment to that one, and it took a right beating.

It is all about the parts, the engine builder and the mapper imo.

However.... the 2.1ltr is a good option all things being equal.

Jan 30, 2011 | 12:58 PM

#19

Shaun

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From: 5 beats 4 - RS3 Rulez!!!

Quote:

Originally Posted by stevebt

I would go with the 2.1 on a closed deck block. The 2.5 will make more torque but the 2.1 will make more power

You sure about that Steve!

Jan 30, 2011 | 02:50 PM

#20

dunx

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From: Slowly rebuilding the kit of bits into a car...

Quote:

Originally Posted by stevebt

I would go with the 2.1 on a closed deck block. The 2.5 will make more torque but the 2.1 will make more power

) For longer... (

dunx

Jan 30, 2011 | 02:54 PM

#21

banny sti

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From: Type R

Quote:

Originally Posted by C. J.

2.35 , best of both worlds

Jan 30, 2011 | 03:19 PM

#22

stealthy55

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Quote:

Originally Posted by banny sti

Stick with a newage sti 2 litre engine, im running one at 500 + and hammer the living daylights out of it!

boring now though

Jan 30, 2011 | 03:52 PM

#23

carpboy

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Quote:

Originally Posted by banny sti

Stay away from the cheap end of the market rods, if going for the 2.1.

What brand would these be ?

Jan 30, 2011 | 04:37 PM

#24

banny sti

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From: Type R

Quote:

Originally Posted by stealthy55

boring now though

agreed! Something special to coming soon though.....

Jan 30, 2011 | 05:12 PM

#25

stealthy55

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Quote:

Originally Posted by banny sti

agreed! Something special to coming soon though.....

look forward to reading about it

Jan 30, 2011 | 06:29 PM

#26

F1 CJE UK

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From: MK

I had the same questions last year , i don’t think there is a answer it’s all down to personal preference and budget. I went with the 2.35 to try and get a compromise between the 2.0 – 2.5, so far i am very happy with the results and the way it drives.