DD supercharged ISF good idea?
02-19-19, 06:24 PM
#31
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Thread Starter
Originally posted by ljdsong:
"That dyno graph above is done with e30 mix but like what I said is not accurate coz the engine air filter is not cleaned since I install the ss kit plus the blower of the dyno shop is not enough."
That your ringlands are still intact after this sort of abuse speaks volumes for the durability of the tune.
"That dyno graph above is done with e30 mix but like what I said is not accurate coz the engine air filter is not cleaned since I install the ss kit plus the blower of the dyno shop is not enough."
That your ringlands are still intact after this sort of abuse speaks volumes for the durability of the tune.
02-19-19, 08:16 PM
#32
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Speaking from experience, it only takes 2 degrees of advance beyond optimum to crack ring lands.
02-19-19, 09:31 PM
#33
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Thread Starter
02-19-19, 10:20 PM
#34
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No, my IS F is not supercharged. I learned this lesson in 1988 with my Yamaha FJ1100 on a top speed run where I pushed full advance up by 2 degrees and crushed the ring lands in cylinder #2. Cost me 8 mph in top speed too.
Last edited by lobuxracer; 02-20-19 at 06:50 AM.
02-20-19, 04:28 AM
#35
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The following 3 users liked this post by Jwconeil:
02-20-19, 01:09 PM
#37
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Thread Starter
Sounds like you were doing the Isle of Man TT back in the day.
02-20-19, 06:04 PM
#38
Do they use an off the shelf map for these supercharger tunes or is it custom dyno tuned?
From reading Corky Bell's book about supercharging, you might lose up to 10% of the NA engine expected service life when you boost, but to me that's minor.
If it was me, I would feel better with a custom dyno tune.
GL.
From reading Corky Bell's book about supercharging, you might lose up to 10% of the NA engine expected service life when you boost, but to me that's minor.
If it was me, I would feel better with a custom dyno tune.
GL.
02-20-19, 07:12 PM
#39
Instructor
Thread Starter
Do they use an off the shelf map for these supercharger tunes or is it custom dyno tuned?
From reading Corky Bell's book about supercharging, you might lose up to 10% of the NA engine expected service life when you boost, but to me that's minor.
If it was me, I would feel better with a custom dyno tune.
GL.
From reading Corky Bell's book about supercharging, you might lose up to 10% of the NA engine expected service life when you boost, but to me that's minor.
If it was me, I would feel better with a custom dyno tune.
GL.
02-20-19, 08:14 PM
#40
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Justind27 (04-13-20)
02-20-19, 08:15 PM
#41
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Service life will depend on how much time you spend at high rpm (which aligns with high boost). Rings wear faster with higher cylinder pressures, there's no way to escape that. The same principle is in effect without boost - more time at high rpm (power) = shorter ring life.
02-21-19, 04:26 AM
#42
Moderator
Service life will depend on how much time you spend at high rpm (which aligns with high boost). Rings wear faster with higher cylinder pressures, there's no way to escape that. The same principle is in effect without boost - more time at high rpm (power) = shorter ring life.
02-21-19, 10:39 AM
#43
Instructor
Thread Starter
Service life will depend on how much time you spend at high rpm (which aligns with high boost). Rings wear faster with higher cylinder pressures, there's no way to escape that. The same principle is in effect without boost - more time at high rpm (power) = shorter ring life.
02-21-19, 09:48 PM
#45
Instructor
Thread Starter
I definitely agree with the free revving the car in neutral/park. I always let me car warm up to temp before I even start moving so around 5 minutes. During that time I mostly settle in and try to find what station or music I want to listen to. I知 never in a rush to just jump in and leave when the car is cold.