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Thread: Rally2 (ex-R5) News
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26th November 2017, 06:04 #4781Senior Member
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26th November 2017, 11:28 #4782
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26th November 2017, 12:11 #4783Senior Member
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Does this make sense: http://www.carmag.co.za/technical_po...s-shortstroke/
So for rally the longstroke gives a bit more torque in low revs, is that the main advantage?
in the two litre era they used to be square did they not?
I thought the modern turbos compensated for this.
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26th November 2017, 13:14 #4784Senior Member
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I am not engine engineer but if I remember the main issue with such small bore engines is that the piston is so small that there is not enough space for larger valves. For sure there is a reason why purpose-built WRC engines have large bore and short stroke - Polo WRC bore/stroke ratio 1,125; Fiesta WRC 1,123; C3 WRC 1,167. Now compare with same size R5 units. Fabia R5 1,088 (based on 1.8 stock engine with shortened stroke); Fiesta R5 1,192 (based on 2.0 stock engine with shortened stroke); C3 R5 0,897 (based on stock 1.6 engine).
Stupid is as stupid does. Forrest Gump
- Likes: electroliquid (26th November 2017),Sulland (26th November 2017)
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27th November 2017, 09:26 #4785
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27th November 2017, 10:26 #4786
- Likes: aykutbilir (27th November 2017),bf1_IRL (27th November 2017),dimviii (27th November 2017),Mirek (27th November 2017),pantealex (27th November 2017),TheFlyingTuga (27th November 2017),WUff1 (27th November 2017)
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27th November 2017, 10:31 #4787Senior Member
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27th November 2017, 12:21 #4788
I am curious how will be a VW rally car without Ogier hands
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27th November 2017, 12:42 #4789Senior Member
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27th November 2017, 13:12 #4790Senior Member
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which i20 Hyundai has the 4b11 from Evo X?
https://rallysportmag.com/details-em...roton-iriz-r5/



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TGR WRT Customer Racing Our Rally2 test team recently headed to Donegal, Ireland, for four days of development testing on some of rallying's most demanding asphalt roads. With the goal of...
Rally2 (ex-R5) News