3.8 reliability?
02-06-2009, 04:34 PM
#1
3.8 reliability?
Dimensionally, the new GT3 is derived from the 3.8-litre RSR (76.4 x 102.7), so it probably has the same cylinders and pistons. I imagine the 3.8 cylinder walls are very thin, well, obviously thinner than the 3.6 cylinder walls, so I'd like to know if RSR race cars have been running reliably. I don't know any RSR guys so I don't know who to ask.
Do you think it will be just as reliable as a 3.6-litre GT3?
Thanks.
Do you think it will be just as reliable as a 3.6-litre GT3?
Thanks.
02-06-2009, 04:41 PM
#2
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The RSR engine is a very different animal, revs to 10k rpm! lots of differences to the street version, most definately the cylenders and pistons as these are moving parts and are hardened and lightened for racing, maybe just the block is the same.
However, with respect to your question, a race engine gets rebuilt anywhere from 40-100 hrs probably less for the RSR at that RPM. So it is a moot point on longevity, my GT3 has 16000 miles and roughly 400 hours on it by comparison.
However, with respect to your question, a race engine gets rebuilt anywhere from 40-100 hrs probably less for the RSR at that RPM. So it is a moot point on longevity, my GT3 has 16000 miles and roughly 400 hours on it by comparison.
02-06-2009, 05:43 PM
#5
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the 3.8L engine has bigger pistons but the same rpm range (relatively) and is still made of similar materials. porsche has been making 3.8 NA engines for a really long time and I wouldn't worry about any top end issues.
02-07-2009, 12:19 PM
#6
02-07-2009, 12:31 PM
#7
I just checked the specifications, yes you're right the RSR pistons are different (higher compression ratio) but I bet the cylinders are the same.
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02-07-2009, 12:41 PM
#8
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it also uses a much higher compression (RSR) but I'm running a 3.8 set up and there's no reason why it's not as reliable as the 3.6.
02-07-2009, 07:26 PM
#11
02-10-2009, 05:42 PM
#13
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Reliability won't be an issue...these things are tested extensively and then produced at a level which they (Porsche) are very comfortable with, in knowing that they'll have very little issues.
In discussing the RSR's engine and the street production car's engine, although they're different the RSR (not only in the engine department) is the test bed for and from where the GT3/RS are derived.
In discussing the RSR's engine and the street production car's engine, although they're different the RSR (not only in the engine department) is the test bed for and from where the GT3/RS are derived.
