USA stock block power VS. UK
#1
Registered User
Thread Starter
USA stock block power VS. UK
Guys as im from the UK, and looking to go FI i just wanted to know why in the states you guys think 400RWHP is around the safe limit on the stock bottom end, and have cars running for 10,000's of miles at this power. All the tuners/ engine builders in the UK and the main UK APS dealer say 400 BHP @ flywheel (330rwhp ish??) is the limit?
Also in the UK the crap fuel over here is 95+ RON and my car only runs on 99RON shell Vpower which is better than what the states has ? Would that not mean we would be safer when boosted?
Last question. Is the US RON number the same as the UK?
I can get BP102 Ron pump fuel just up the road from my house. If the ron scale is the same is this not far off you race fuel?
Thanks guys.
Also in the UK the crap fuel over here is 95+ RON and my car only runs on 99RON shell Vpower which is better than what the states has ? Would that not mean we would be safer when boosted?
Last question. Is the US RON number the same as the UK?
I can get BP102 Ron pump fuel just up the road from my house. If the ron scale is the same is this not far off you race fuel?
Thanks guys.
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#8
Registered User
In US they use the AKI anti-knock index which is what the guys already stated, and in Europe and Middle East RON (Research Octane Number) is used
89 AKI = 92 RON
91 AKI = 95-96 RON
93 AKI = 98 RON
I Took this from 2009 Nissan GT-R Owner Manual:
Unleaded gasoline with an octane rating of at least 93 AKI (RON 98)*1
*1: Use unleaded premium gasoline with an octane rating of at least 93 AKI (Anti- Knock Index) number (Research octane number 98) to maximize vehicle performance. If 93 AKI number (Research octane number 98) premium gasoline is not available, you may use unleaded premium gasoline with an octane rating of at least 91 AKI number (Research octane number 96), but you may notice a decrease in performance.
89 AKI = 92 RON
91 AKI = 95-96 RON
93 AKI = 98 RON
I Took this from 2009 Nissan GT-R Owner Manual:
Unleaded gasoline with an octane rating of at least 93 AKI (RON 98)*1
*1: Use unleaded premium gasoline with an octane rating of at least 93 AKI (Anti- Knock Index) number (Research octane number 98) to maximize vehicle performance. If 93 AKI number (Research octane number 98) premium gasoline is not available, you may use unleaded premium gasoline with an octane rating of at least 91 AKI number (Research octane number 96), but you may notice a decrease in performance.
#12
Registered User
Thread Starter
Tuning would be done by DS Automotive the UK APS dealer of Dan Turner of AME.
Im looking at going SC as the torque of a turbo would be great but wold make me worrie about the engine life.
If i was to get the turbo tuned to around 330whp/lbft that is on the safe side is it not?
Im looking at going SC as the torque of a turbo would be great but wold make me worrie about the engine life.
If i was to get the turbo tuned to around 330whp/lbft that is on the safe side is it not?
#13
8 to 11
iTrader: (7)
Tuning would be done by DS Automotive the UK APS dealer of Dan Turner of AME.
Im looking at going SC as the torque of a turbo would be great but wold make me worrie about the engine life.
If i was to get the turbo tuned to around 330whp/lbft that is on the safe side is it not?
Im looking at going SC as the torque of a turbo would be great but wold make me worrie about the engine life.
If i was to get the turbo tuned to around 330whp/lbft that is on the safe side is it not?
#19
New Member
iTrader: (5)
At todays rate that would equate to a $140 fill up GULP.....
And I was griping at a 65 dollar fillup.
One of the other forums I belong to is the Insightcentral.net, I wish I had kept my insight, 60+ MPG on 87 octane would have saved be a bundle this last summer with a 140 mile per day commute...
And I was griping at a 65 dollar fillup.
One of the other forums I belong to is the Insightcentral.net, I wish I had kept my insight, 60+ MPG on 87 octane would have saved be a bundle this last summer with a 140 mile per day commute...
Last edited by fklentz; 10-15-2008 at 06:29 PM.
#20
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Join Date: May 2006
Location: Sydney, Australia
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OP:
First thing i worked out, wayyyy back in my civic owners day, is that USA Hp numbers are inflated. I did tests, same setups, different HP outputs, same 1/4mile times.
Dyno Dynamics confirmed to me that they configure there US dynos to read differently (higher) then there other dynos.. This is mainly because the US guys grew up with dynos that output very optimistic numbers (some say, flywheel horsepower), and the only way to compete was to try and emulate the numbers as much as possible. No shops wants to be sending customers home with 100 less hp then the guy next door! THese days, things are becoming more relaxed in the tuner community though. People are embracing dyno dynamics for the there effectiveness, and are coming to terms with 'heartbreaker' results. Even though these heartbreaker results are still overinflated.
The fuel issue has already been covered. UK uses the same rating system (RON) as Australia. http://www.torquecars.com/articles/f...ne-ratings.php
We used to have 100octane vpower (10% ethonal) here, but not anymore. 98ROn is the best pump, equiv to amercan 94~.
My advice is to tune to around 360-380rwhp and u will be good to go. Thats around 8psi. 8psi is sweet. Keep timing conservative and u will be reliable as!
First thing i worked out, wayyyy back in my civic owners day, is that USA Hp numbers are inflated. I did tests, same setups, different HP outputs, same 1/4mile times.
Dyno Dynamics confirmed to me that they configure there US dynos to read differently (higher) then there other dynos.. This is mainly because the US guys grew up with dynos that output very optimistic numbers (some say, flywheel horsepower), and the only way to compete was to try and emulate the numbers as much as possible. No shops wants to be sending customers home with 100 less hp then the guy next door! THese days, things are becoming more relaxed in the tuner community though. People are embracing dyno dynamics for the there effectiveness, and are coming to terms with 'heartbreaker' results. Even though these heartbreaker results are still overinflated.
The fuel issue has already been covered. UK uses the same rating system (RON) as Australia. http://www.torquecars.com/articles/f...ne-ratings.php
We used to have 100octane vpower (10% ethonal) here, but not anymore. 98ROn is the best pump, equiv to amercan 94~.
My advice is to tune to around 360-380rwhp and u will be good to go. Thats around 8psi. 8psi is sweet. Keep timing conservative and u will be reliable as!