WRC Engines

[LouKayne]

Please post and discuss any information you have about WRC engines. Dyno sheets, specs, pictures, videos, sound clips, etc.

[janvanvurpa]

Please post and discuss any information you have about WRC engines. Dyno sheets, specs, pictures, videos, sound clips, etc.

Why don't you start by copying and pasting the relevant sections of the FIA rule book...

An awful lot of why they are what they are is all right in those regs.
IE the limitations...

[LouKayne]

Why don't you start by copying and pasting the relevant sections of the FIA rule book...

An awful lot of why they are what they are is all right in those regs.
IE the limitations...

So your trying to tell me every WRC engine is singly describe by one set of rule (i.e. Limitations). Every manufacture has their own take on the engine regulations that why you see VW dominating because their engine is much strong than the rest. The formula one has limitations like the WRC and I don't see Renault and Mercedes with the same engines, likewise with Citroen, M-Sport, VW, Etc. The 2007 Subaru WRC 2.0L boxer looks, sounds and performs just like the Citroen C4 WRC 2.0L I4...... I don't think so.

[RAS007]

So your trying to tell me every WRC engine is singly describe by one set of rule (i.e. Limitations). Every manufacture has their own take on the engine regulations that why you see VW dominating because their engine is much strong than the rest. The formula one has limitations like the WRC and I don't see Renault and Mercedes with the same engines, likewise with Citroen, M-Sport, VW, Etc. The 2007 Subaru WRC 2.0L boxer looks, sounds and performs just like the Citroen C4 WRC 2.0L I4...... I don't think so.

It appears that you are new here. If you want to get information from this board, you might try a less confrontational approach. That, and your original request is a little vague, to say the least.

[LouKayne]

It appears that you are new here. If you want to get information from this board, you might try a less confrontational approach. That, and your original request is a little vague, to say the least.

I just hate seeing people being naysayers on forums but sorry about coming off confrontational and yes, vague because I wanted to make it a general forum for anyone with any information to share if they would like.

[Muchonen]

I just hate seeing people being naysayers on forums but sorry about coming off confrontational and yes, vague because I wanted to make it a general forum for anyone with any information to share if they would like.

But to be honest FIA regulations is the point where u have to start if u want to make such a tread. Cause I can tell u that engine has to be 1.6 with turbo. Sure that is some information but I doubt if u wanted that kind of stuff. Make a solid base on which we can discuss and add some things we know. And being polite may be helpful otherwise u will became next N.O.T...

[janvanvurpa]

I just hate seeing people being naysayers on forums but sorry about coming off confrontational and yes, vague because I wanted to make it a general forum for anyone with any information to share if they would like.

Nobody so far, aside from the perma-Troll who is NOT important, has said anything negative..
I suggested you copy and paste the engine rules set so that reference could be made to those rules and not just throwing around gut feelings from watching You-tube..

What did you say your name was? You rally up there? What car and class? I have a lot of friends and customers using my stuff up in Canada.

[janvanvurpa]

So your trying to tell me every WRC engine is singly describe by one set of rule (i.e. Limitations). Every manufacture has their own take on the engine regulations that why you see VW dominating because their engine is much strong than the rest. The formula one has limitations like the WRC and I don't see Renault and Mercedes with the same engines, likewise with Citroen, M-Sport, VW, Etc. The 2007 Subaru WRC 2.0L boxer looks, sounds and performs just like the Citroen C4 WRC 2.0L I4...... I don't think so.

So much wrong....You evidently are new to this sport and obviously don't understand what different things inside the engines mean in practice...
The 07 Subaru does not sound and perform just like all the other engines..
The bore on that was 92mm, virtually all the others were 84 or 85mm or max (Evo 10) 86mm..
This make a difference in the max possible dynamic compression ratio and max boost for a given fuel..
So limiting is this bore size thing that the Duratec Fords in the Fock-us which stock was 87.5mm was reduced down to 85mm..and stroke changed to 89 to compensate..
Has to do with flame front propagation and distance to complete a burn..
It is one reason why Subies began to be less effective...and the proof of the pudding is the new Subie/Toyota BRZ thing they changed bore down to 86mm and stroke 86mm..
They wouldn't have changed it just because they were bored, they changed it because fuel only burns so fast and they wanted more complete combustion..

So not to be too mean, often it doesn't matter what we "think" if the reality of what 'is" is different..

The VW engine is not "much stronger" if you do the math and see the difference expressed in %..

The differences in SS times to other works cars is oten less than 0,15%...That cannot seriously be considered "much stronger" or faster...


Hard to discuss using only opinions and not measuring anything or comparing dimensions, and numbers...

[LouKayne]

So much wrong....You evidently are new to this sport and obviously don't understand what different things inside the engines mean in practice...
The 07 Subaru does not sound and perform just like all the other engines..
The bore on that was 92mm, virtually all the others were 84 or 85mm or max (Evo 10) 86mm..
This make a difference in the max possible dynamic compression ratio and max boost for a given fuel..
So limiting is this bore size thing that the Duratec Fords in the Fock-us which stock was 87.5mm was reduced down to 85mm..and stroke changed to 89 to compensate..
Has to do with flame front propagation and distance to complete a burn..
It is one reason why Subies began to be less effective...and the proof of the pudding is the new Subie/Toyota BRZ thing they changed bore down to 86mm and stroke 86mm..
They wouldn't have changed it just because they were bored, they changed it because fuel only burns so fast and they wanted more complete combustion..

So not to be too mean, often it doesn't matter what we "think" if the reality of what 'is" is different..

The VW engine is not "much stronger" if you do the math and see the difference expressed in %..

The differences in SS times to other works cars is oten less than 0,15%...That cannot seriously be considered "much stronger" or faster...


Hard to discuss using only opinions and not measuring anything or comparing dimensions, and numbers...

If you actually re read what I wrote I didn't say they were they same. I said I don't think so. The person I was responding to was saying that every WRC engine is the exact same and I was saying the contrary.

[janvanvurpa]

If you actually re read what I wrote I didn't say they were they same. I said I don't think so. The person I was responding to was saying that every WRC engine is the exact same and I was saying the contrary.

Well Post no3 is you responding to me where you say

So your trying to tell me every WRC engine is singly describe by one set of rule (i.e. Limitations). Every manufacture has their own take on the engine regulations that why you see VW dominating because their engine is much strong than the rest. The formula one has limitations like the WRC and I don't see Renault and Mercedes with the same engines, likewise with Citroen, M-Sport, VW, Etc. The 2007 Subaru WRC 2.0L boxer looks, sounds and performs just like the Citroen C4 WRC 2.0L I4...... I don't think so

Helps when you click "quote" when replying..

And nobody here "was saying every WRC engine is the same" but if they were so crazy "saying the contrary' without numbers, dimensions, sizes etc is just as pointless.


And maybe I mis-read what you're lat line said--or implied

So your trying to tell me every WRC engine is singly describe by one set of rule (i.e. Limitations).

Not at all.. It seems you are not really interested in any of the details like bore, stroke rod length valve sizes cam timing and duration--which only tells half the story or the turbo turbine wheel and compressor wheel dimensions, the pressure ratios in the turbos.....

Or is it that you want others to supply all that data??

And for some reason you still haven't said what your name is and what class you do up in Canada...
Is there some reason for that? The refusal is kind of like turning your back on somebody that you began a discussion with... it's mildly put---odd.