Cupra Vs Cupra R

[grahams81]

grahams81 wrote

It's not the power your putting out that snaps these rods it seems to be the massive torque spike that the standard quick spooling turbos create when remapped.​

Aarrrgh

Power(bhp)=Torque(lb-ft) x rpm/5252

At all times in any internal combustion engine the explosion of the fuel-air mixture exerts pressure on the piston which is experienced as torque on the crankshaft. The power so produced is a product of the torque and the engine rpm.

Power and torque are always present. Stop talking about them as though they were as different as chalk and three tons of semolina pudding

More crudely:

Power pushing the car down the road = how big a bang you can make x how often you can make it

There's always a bang.

No Sh*t sherlock, thanks for the info wasn't sure how that lump of metal i've built from scratch was gonna work ....
FYI i was trying to summerise the problems experienced with snapped conrods on 1.8T engines......

Like you say the power is produced by torque x rpm but the way the torque is generated can put severely different levels of "stresses" on the engine components... THAT IS THE POINT I WAS MAKING !!!!!

Take for instance a k04 turbo that can generate massive levels of torque very quickly say running 250bhp.
A gt28-30 that spools slowly but make more peak torque and power but the torque is generated in smoother way....
Which will exert the most stresses on the components ???

It has been well discussed on the forums that quite a lot of rods snap at low rpms (close to peak torque)

 

[akchappers]

Zzzzzzzzzzzzz
Ak

 

[Allan_84]

they must make different rods in denmark , cause the rods that came out of the mk4 golf engine 1.8t agu aint forged

if this is what you read out of my post then i did not make me self clear, sorry.

not any 1,8T have forged rods!!!

only the pistons and crank is forged!!

Nope. AUQ does not have oil squirters, unless there is a special version made just for Denmark which has. Mine didn't, when the workshop removed the pistons (to change the piston rings) they found none. At least they also took the opportunity to fit the IJ crank scraper back then

all 1,8T engines have oil squirters.

heres the prof:
leon mk1 2001 APP/AUQ/AJQ/ARY

leon mk1 2003 AUQ/ARY/AMK/BAM

and if you look, even the AGN/APG (125bhp non-turbo 1,8 20v) has the oil squirters!

Also the injectors for AUQ and AMK/BAM are different, larger in the latter case.

APP/AUQ/ARY/AJQ engines (all 180bhp) in the mk1 leon, have 317ml @ 3bar injektors.
all AMK/BAM, have 386ml @ 3bar injektors.

Pistons are different in AUQs and AMK/BAM, 9.5:1 compression in the first case and 8.9:1 in the latter, to better withstand high boost without detonating.

early APP (<017 000) and all AJQ engines have 20mm wrist pin and have 9,5:1 compression ratio.

late APP (017 001<), ARY and AUQ engines have 19mm wrist pin and have 9,5:1 compression ratio.

AMK and BAM engines have 20mm wrist pin and 9:1 compression ratio.

 

[akchappers]

I'm losing the will to live ......
Ak

 

[Phillc]

The Cupra r has larger oil squirters than the Cupra.

 

[akchappers]

Aha! Phil is here! I believe Phil!
Ak

 

[Adjay]

Iv come to realize if your going to mod a cupra. It don't matter that ya did not get a cupra r. since the differences are not very noticable or better when doing general day driving. like my cupra will out pull a standard none mapped cupra r since its been mapped, power is lower down. I do feel cupras give ya better value for money. It don't justify paying a good few more grand for a cupra r just for a few differences. especially if your planning on moding your cupra. the bits you put on like suspension and brakes could potentially be better than a standard cupra r, depending on if you make the right purchases.

I KNOW I'M OPENING A CAN OF WORMS OOPS!! It comes down to personal preference.

 

[d3m0niTe]

But come up against a mapped LCR and you'll be wishing you paid that little bit extra

Swings and roundabouts though

 

[Dan1720v]

I found my ex mrs FR felt quicker in standard form than my LCR did. However a mapped LCR is blisteringkg quick in gear.

 

[seatcupramad23]

Torque makes you feel like your going faster than you actually are , cupras aren't worth anything these days , cupra r 's IMO are a better investment and this is from a guy that has had 4 cupras , which where highly modded

 

[Adjay]

But it don't justify about 3 more grand for a extra 45hp. If I had a 3 grand id get a good bit of after market internals done on my cupra. as I said its up to preference and what your plans are for your car either if its lc. or lcr .

 

[Phillc]

I would say one of the main benefits you get from the R is a better suspension set up from the start, if you lower the Cupra you will have problems with the drive shafts, where the R wont, i ended up changing the wish bones and hubs for the cupra R ones, the engines are basically the same only real differences are the 20mm wrist pins in the R and 19's on the Cupra, when you look at hybrids the Ko3 can get to about the same BHP figures as the K04 and you would need to change the rods on both the cupra and the R when you start pushing the Torque figures, BT turbos will get the same in the Cupra and the R, and require the same mods, cosmetic differences inside are down to the owner they may want the black trim some are happy with the grey, the brakes are the other main difference which again can be swapped easily enough, i am glad i bought my cupra it has toys that you cant get on the R, i feel i now have the best of both worlds and the main thing is i enjoy "Building" my car.

 

[seatcupramad23]

First off there is no longer a 3K difference , so now is the ideal time to get an r I paid 2800 4 mine

 

[Adjay]

Very true. I think its fun building a cupra so its as good or better than a standard lcr.and for cheaper money in the end. something interesting you said about the suspension. my cupra/fr has been lowered by previous owner does that mean some bit have been changed to get it lower. if so ill have to check.

 

[Adjay]

Im in Ireland and we get ripped of and there is still a 3 grand euro difference. and import is that high its not worth while to import a lcr from UK.

 

[seatcupramad23]

In what way modding a cupra is better , you must mean you ll spend more money trying match power with remapped lcr , I've modded cupra s before it cost 2500 in parts to achieve 276 bhp in the past which you can get with just stage 2 Lcr

 

[Adjay]

In that a standard lcr in Ireland that is 3000 more than a lc and standard power on lcr is 225. So if I spent 3 grand ill get Alot more in the end, as you have just proved by what you spent and your out come.

 

[Phillc]

. my cupra/fr has been lowered by previous owner does that mean some bit have been changed to get it lower. if so ill have to check.

No, they will both go to the same point, its just that the Cupra's wishbones will be pointing upwards not good for the wishbones or geometry, where the R's wishbones will be level.

In what way modding a cupra is better , you must mean you ll spend more money trying match power with remapped lcr , I've modded cupra s before it cost 2500 in parts to achieve 276 bhp in the past which you can get with just stage 2 Lcr

Its not a matter of "Better" each to their own, yes you can achieve better figures with stage two mapping on the R but once past that its all level no differences.

 

[seatcupramad23]

Good thing I'm not in Ireland then ,

 

[Adjay]

And our tax just went up and our fuel.