Yeah all that along with actual block designs - ie. in-line 4 vs flat four for example, or if its closed/semi-closed/open/sleeved deck etc.Quote:
Originally Posted by OldF
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Yeah all that along with actual block designs - ie. in-line 4 vs flat four for example, or if its closed/semi-closed/open/sleeved deck etc.Quote:
Originally Posted by OldF
Thanks. I know what a sleeved is but if you could please yet explain what closed/semi-closed/open means. Whit a flat four I assume you mean a boxer engine.Quote:
Originally Posted by grugsticles
.Yoy can also find open/semi closed deck engine blocks and at 4 in line engines.
ie evo9 is a closed deck.
evo x is a semiclosed deck
sti spec c is semiclosed too.
closed or semiclosed decks have more strength than open deck blocks.
very important for high boost turbocharged engines with als systems.
Click here as it is explained from some subaru guys..
http://images.google.gr/imgres?imgur...%3Del%26sa%3DG
Hej Old Finn, open deck is when there is more or less 360 degrees of water surrounding the cylinder like many die cast blocks and for example the early Ford V4 used in the great mighty Saab 96 up to maybe mid 1968.Quote:
Originally Posted by OldF
Subaru seems to have borrowed a lot of dimesions from the V4, made the block out of recycled pistons, and copied the dumb idea of "Open deck".
http://legacycentral.org/images/memb.../open_deck.jpg
They did at some point have "closed deck" or material attaching the cylinder to the rest of the block at some earlier point>
http://legacycentral.org/images/memb...losed_deck.jpg
Subaru clearly got lost in their thinking, and went the opposite direction than the Ford V4 which started open deck then went closed, and after that Trollhättan trolls made some fairly OK power out of the thing.
Subaru has clearly lost their way.
Thanks for helping with the explanation.Quote:
Originally Posted by janvanvurpa
Subaru did use closes deck blocks for the early Liberty/Legacy's (ie. 89 to 93) and some early classic WRX's, but then moved to open deck.
Since then modern WRX's and STi's tend to use semi-closed deck (basically an open deck with rods welded into placed around the cylinder sleeve to stop it from moving at high RPM and loads). You can get quite good performance from a semi-closed deck block. 300+kw at the wheels with the right supporting mods is quite common.
Im not sure what Subaru WRC's use but I certainly wouldnt say they have lost their way in terms of engine design. Then again, Im a Subaru fan:P
A rumour in Greece says that Aris Vovos will contest this year's Acropolis with an EVO 9 from Ralliart Italy. He wanted to take part with a C4 WRC, but due to economic crisis, he changed his mind.
Interesting :)
Elena: “When I am not next to him, Sebastian does not win!"
http://www.wrc.com/jsp/index.jsp?lnk...%20quad%20race
Thanks a lot grugsticles, janvanvurpa and dimviiiQuote:
Originally Posted by grugsticles
Volkswagens WRC plans are on hold. They (first) gonna defend their victory in the 2010 Dakar rally. Despite the hugh losses, the investment for the Dakar are worth it, because the publicity of their victory were hugh al over the world. But the WRC budget has to be given to the rally raid program. VW will probarly maintain their crew, so Carlos Sainz will have a second change to take the Dakar rally.
Yes saw that VW will defend the Dakar title, so Polo with SA and RGRS will still be the top VW rally car !