2.2 oem engine vs 2.5 strokers

[aronmatic2]

Why bad design. They where nice :-p

i meant the pin position.

[Jamo]

lets face it theres nothing wrong with either. the way i see the stroker is it has an additional value of being special. by that i mean its a lot more unique and not bought in the car as is.

this obviously has its issues. one being insurance as its an engine swap not an upgrade.

my personal view is that a few more PSI will sort any power differential out. the biggest issue i see is strokers are often compared to audis stock block and not a built 2.2

if you fancy a stroker, go for it.

personally i cannot see the point if you aint going for the next level of hp around the 600-650 mark.

Pound for pound 2.5 will also make more power and torque than a 2.2 no if's no buts at any given power level.

If you get all the bits cost no more than a good 2.2 build

I've had both a built 2.2 and a built 2.5 as the 2.5 out performed the 2.2 by miles even at 350 bhp

Anyhow each to their own, the less people who have strokers the better IMO

[GazzaG60]

we could debate this for hours.

in a drag race a 2.2 will beat a stroker. its about RPM. and HP. rpm makes HP

round town a stroker will win. most times. its a torque game. just like my corrado G60 at almost 200hp was as fast as a 300hp subaru.

a stroker will always cost more jamo. you need to buy a block too. and more custom parts.

[Jamo]

we could debate this for hours.

in a drag race a 2.2 will beat a stroker. its about RPM. and HP. rpm makes HP

round town a stroker will win. most times. its a torque game. just like my corrado G60 at almost 200hp was as fast as a 300hp subaru.

a stroker will always cost more jamo. you need to buy a block too. and more custom parts.

Actually head over to motorgeek and you'll find it doesn't drag proven.

Also cars such as Feco and Jonus doing the drag scene, their losing because their strokers?

It's churlish to say a stroker will lose on drag, the power and torque is available at a lower rpm the 2.2 has to rev high to make the same power or enter the peak range of the turbo.

It's not down to engine type alone

[GazzaG60]

ill leave this one.

i think looking at the drag world will give you other answers but thats my opinion.

we had this with vems too IIRC. you wouldn't touch it with a bargepole then jamo.

[quattro84]

+1

Stroker gives a usefull powerband. Revver gives max. horsepower. That's why F1 engines use gigantic stokers...

[Jamo]

+1

Stroker gives a usefull powerband. Revver gives max. horsepower. That's why F1 engines use gigantic stokers...

http://www.s2forum.com/forum/showthread.php?t=4910

How many cars on here are running signficantly beyond stock redline that you've seen? hydro lifters can go about 7500 then your in the realm of solid lifters

MRC recently went from a 8600 revving engine to 7400 and only lost 30 hp but gained major driveability in engine response.

the 2.2 hi-revving will win on a drag is a myth due to under curve nature of the setup.

Dont take my word for it ask our European draggers running stroker drag cars

I take it gazza lives his life 10 seconds at a time on the streets of manchester......

[GazzaG60]

area under the curve is street tackle. not strip.

i made a fair bit of hp and torque on the G60 corrado. in a straight line a honda will see it off. on the road not a chance. its RPM.

10 seconds is too long in Oldham. lol

an audi tts or even my 530d m sport has more area under the curve than me id expect. i dust him/it all day long. i have no built engine. just a lowly 2.2 with a bigger blower and a few mods.

[Audi_CQ]

we could debate this for hours.

in a drag race a 2.2 will beat a stroker. its about RPM. and HP. rpm makes HP

round town a stroker will win. most times. its a torque game. just like my corrado G60 at almost 200hp was as fast as a 300hp subaru.

a stroker will always cost more jamo. you need to buy a block too. and more custom parts.

If so: why aren't all drag cars running 2.0 cranks for a even shorter stroke

[UR-S-SEX]

+1

Stroker gives a usefull powerband. Revver gives max. horsepower. That's why F1 engines use gigantic stokers...

F1 engines are N/A much different powerplant dynamics, and have insanely light pistons and rods to keep reciprocating mass down, like under 200 grams per rods currently.. and how long do they last turning 20k rpm..

Only stroker limitations is in the rod stroke ratio, due to the large reciprocating mass and extremely piston velocities, Lighten the internals and spin on... besides 7500 rpm is plenty on a 2.6, 8000 should be easy with custom lighter forged or $$$ TI internals.

[Audi_CQ]

Hi boys ¡¡

do you know if it is harder or easier to map one of both engines with aftermarkets engine managements like Vems,Autronic,etc etc etc... ???

or are both the same easy/difficult to do??

how many people here are happy with aftermarket ecus and 2.5 strokers ??'

Jamo ,Billman.... helloooooooo

I've tuned similar setup 2.2 and 2.5. Both used same starting map just ~15% less fuel on the 2.2 as a start and 2.5 need less ignition because of better cyl filling. You need a dyno with wideband lambda and knock sensor setup for fine tuning anyway so job is the same for 2.2 and 2.5.

[Audi_CQ]

+1

Stroker gives a usefull powerband. Revver gives max. horsepower. That's why F1 engines use gigantic stokers...

Rules for F1 says 2.4 V8 now doesn't it? If they could use a 2.7 stroker as an legal option they would have done it

[UR-S-SEX]

I've tuned similar setup 2.2 and 2.5. Both used same starting map just ~15% less fuel on the 2.2 as a start and 2.5 need less ignition because of better cyl filling. You need a dyno with wideband lambda and knock sensor setup for fine tuning anyway so job is the same for 2.2 and 2.5.

I would say accurate EGT monitoring as well if you plan on getting the timing right

[Evert Thomas]

What kind of block and other parts will you need to build a stroker engine?

[Rocco]

What kind of block and other parts will you need to build a stroker engine?

as the little i know, custom pistons,custom rods and rod/main bearings with AEL or AAT block with the original crankshaft 95.5 stroke i think