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? |
lapuwali |
Aug 16 2005, 11:33 AM
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#162
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
John, you're talking about race engines, and I'm not. Jake has claimed that one of his engines will go 100K miles in "normal" use, which seems to mean street and some AX, with maybe a track day here and there. I have no reason to doubt this figure. This is an expensive ($8K) engine with Nickies and ceramic stuff in it. I have no doubt an iron-barrelled highly-stressed engine will have a much shorter lifespan, esp if road-raced. That a Six will hold together for 2-3x longer than a Four under racing conditions is good info, but not necessarily relevant unless the original question was only about track-only engines. Even if that's directly applicable to the street, if Jake's numbers are reasonable you'd see 200-300K miles out of a Six in street use. For some Sixes (like the SC), I'd believe that number. However, if I can spend $8K on engine A and get 100K miles, or $20K on engine B and get 300K miles, I'd still opt for engine A, since that 100K miles would likely last me 10-15 years in a 914. I'd be dead (or just too old to care) by the time engine B needed a rebuild. |
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