Four vs Six, comparison questions |
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Four vs Six, comparison questions |
johnmhudson111 |
Aug 16 2005, 09:02 AM
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#161
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Member Group: Members Posts: 491 Joined: 29-November 04 From: Nesbit, MS Member No.: 3,191 |
I am sure ths has been discussed before but I couldn't find anything using the search. So, has there been a comparison done between a 911 six and big four, like Jake Raby's engines? Looking at:
1. Overall cost of engine (plus consideration of the cost of the conversion to a six from a four) 2. power hp/tq 3. engine life 4. other issues? |
Jake Raby |
Aug 16 2005, 12:15 PM
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#162
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
FYI- The cost between a 180HP/4 and a 140 HP/4 isn't but about 2K and thats the difference in head work primarily since 90% of the other components will handle 180HP just as well as 140.
Now, going over 180 HP RELIABLY almost dubles the cost of the 140HP engine because we have to use exotic materials to attain the goal and retain RELIABILITY AND LONGEVITY... I have built many 911 engines in my time, but none newer than a 2.7..... I chose long ago to stick with the /4 because I totally understand the engine and all its parts- Of course I'm biased to a /4 engine because I love them. I will say that a /4 thats not properly designed or well built is a nightmare waiting to happen- those nightmares keep my doors open because I repair those mistakes all the time. |