Saxo Engine/Performance If you're interested in tuning Saxo engines, or if you need to know something which is engine related... this is the place for you. |
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15th April 2010, 20:51
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#121
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Super Moderator
Join Date: Feb 2004
Location: Tonbridge United Kingdom (England)
Posts: 38,236
Car(s): Vtr, 172, throttle bodied track slut
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Quote:
Originally Posted by SaxSpeed
they tail off because you come off the power :L fool
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The reason people come off the power is because the engines power has stopped going up hence the PEAK...
lol
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15th April 2010, 20:52
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#122
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Established Member
Join Date: Mar 2010
Location: Cupar Fife
Posts: 1,712
Car(s): 1600 16v VTS
1600 8v VTR
1400 16v Clio Sport
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Quote:
Originally Posted by Ryan
so you tune engines yet copy and paste from google?
As we keep saying, if the cam profile is making peak rpm at say 5.5k what good is an 8k limit and how is the car going to gain extra power after it has peaked at 5.5k? please explain
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you would run a higher rpm peak cam
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15th April 2010, 20:54
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#123
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Super Moderator
Join Date: Feb 2004
Location: Tonbridge United Kingdom (England)
Posts: 38,236
Car(s): Vtr, 172, throttle bodied track slut
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Quote:
Originally Posted by SaxSpeed
if the limiter of a vtr was at 3k rpm it wouldnt be 100bhp, it would be less, alot less,
backing off the limiter runs the engine closer to niping up as most internal botom end mods do but acheiving more bhp as the engines having to work harder for instance 1500 rpm harder
So ur all sayin thats wrong :L
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But the limiter isnt 3k is it, its above where the PEAK power is allready.
Hence why increasing the limiter on THIS engine to say 8k wont yield extra power as you have allready peaked.
Its like sex, once you have come performance goes down
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15th April 2010, 20:54
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#124
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Saxperience Post Whore
Join Date: Jan 2007
Location: Shropshire
Posts: 9,994
Car(s): Moonstone Blue 106 GTi
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ahhhhhhh!!!!!!!!!!!!!
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15th April 2010, 20:55
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#125
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Super Moderator
Join Date: Feb 2004
Location: Tonbridge United Kingdom (England)
Posts: 38,236
Car(s): Vtr, 172, throttle bodied track slut
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Quote:
Originally Posted by SaxSpeed
you would run a higher rpm peak cam
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Which is different to simply just increasing the RPM of the limiter isnt it
What happens if you change the cam to one that peaks at 7k would you run 10k limit? so the extra 3k can gain all this power?
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15th April 2010, 20:56
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#126
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Saxperience Post Whore
Join Date: Apr 2007
Posts: 6,640
Car(s): Integra DC5R & VTS
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Quote:
Originally Posted by SaxSpeed
ok then gt a car dyno ran standerd then again without a limiter, weel c whos rite then yer?
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We certainly will... when it goes boom and pisses oil all over the shop.
Here's a suggestion: get your 1.1 on the dual carriageway and up to a steady cruise. Then drop it back into 1st gear - following your logic, all will be gravy as cars don't need rev limiters... right?
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Quote:
Originally Posted by saxo_ron
Anyhow I only live my life a cup of tea at a time and im all out so im off to boil the kettle
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15th April 2010, 20:56
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#127
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Established Member
Join Date: Mar 2010
Location: Cupar Fife
Posts: 1,712
Car(s): 1600 16v VTS
1600 8v VTR
1400 16v Clio Sport
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Quote:
Originally Posted by Ryan
But the limiter isnt 3k is it, its above where the PEAK power is allready.
Hence why increasing the limiter on THIS engine to say 8k wont yield extra power as you have allready peaked.
Its like sex, once you have come performance goes down
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is this whole post not about changing the cam?
so it wouldnt be a standerd engine, a higher peak power cam along with the limiter backed off will increase bhp
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15th April 2010, 20:58
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#128
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Established Member
Join Date: Mar 2010
Location: Cupar Fife
Posts: 1,712
Car(s): 1600 16v VTS
1600 8v VTR
1400 16v Clio Sport
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Quote:
Originally Posted by LeeumH
We certainly will... when it goes boom and pisses oil all over the shop.
Here's a suggestion: get your 1.1 on the dual carriageway and up to a steady cruise. Then drop it back into 1st gear - following your logic, all will be gravy as cars don't need rev limiters... right?
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Back off the limiter not take it away u mug
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15th April 2010, 20:58
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#129
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Frequent Poster
Join Date: Jan 2010
Location: Wakefield
Posts: 594
Car(s): seat leon fr
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cammed 1.1 wins end of..
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15th April 2010, 20:58
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#130
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Super Moderator
Join Date: Feb 2004
Location: Tonbridge United Kingdom (England)
Posts: 38,236
Car(s): Vtr, 172, throttle bodied track slut
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Quote:
Originally Posted by SaxSpeed
is this whole post not about changing the cam?
so it wouldnt be a standerd engine, a higher peak power cam along with the limiter backed off will increase bhp
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but you keep posting that the rev limit is whats limiting the power, when its not its the cam profile.
Not all cam profiles are that wild to even justify a higher RPM from the engine, surely as a tuner you would know that cam profles are different and that every set up will be different according to this and the mapping
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15th April 2010, 20:58
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#131
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Established Member
Join Date: Mar 2010
Location: Cupar Fife
Posts: 1,712
Car(s): 1600 16v VTS
1600 8v VTR
1400 16v Clio Sport
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plus it wouldnt go into 1st gear at that speed anyway
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15th April 2010, 20:59
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#132
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Saxperience Post Whore
Join Date: Jun 2004
Location: Helmsdale
Posts: 8,832
Car(s): DC5 Teg
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Saxspeed, you don't have a clue what you're on about, you can't even word things convincingly.. fuck off and stop wasting everyones time
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15th April 2010, 20:59
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#133
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Saxperience Post Whore
Join Date: Apr 2007
Posts: 6,640
Car(s): Integra DC5R & VTS
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Quote:
Originally Posted by SaxSpeed
Back off the limiter not take it away u mug
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That's not what you said...
Quote:
Originally Posted by SaxSpeed
ok then gt a car dyno ran standerd then again without a limiter, weel c whos rite then yer?
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Quote:
Originally Posted by SaxSpeed
plus it wouldnt go into 1st gear at that speed anyway
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I beg to differ.
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Quote:
Originally Posted by saxo_ron
Anyhow I only live my life a cup of tea at a time and im all out so im off to boil the kettle
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15th April 2010, 20:59
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#134
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Saxperience Addict
Join Date: Aug 2008
Location: Bedworth
Posts: 10,221
Car(s): 106 gti
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Quote:
Originally Posted by SaxSpeed
plus it wouldnt go into 1st gear at that speed anyway
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Why not?
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15th April 2010, 21:00
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#135
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Established Member
Join Date: Mar 2010
Location: Cupar Fife
Posts: 1,712
Car(s): 1600 16v VTS
1600 8v VTR
1400 16v Clio Sport
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Quote:
Originally Posted by Ryan
but you keep posting that the rev limit is whats limiting the power, when its not its the cam profile.
Not all cam profiles are that wild to even justify a higher RPM from the engine, surely as a tuner you would know that cam profles are different and that every set up will be different according to this and the mapping
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no what im saying is once fitted a diff cam, eg. higher peak power cam, backing off the limiter u will gain more bhp than a 6000rpm peak power cam
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15th April 2010, 21:01
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#136
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Super Moderator
Join Date: Feb 2004
Location: Tonbridge United Kingdom (England)
Posts: 38,236
Car(s): Vtr, 172, throttle bodied track slut
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Quote:
Originally Posted by SaxSpeed
no what im saying is once fitted a diff cam, eg. higher peak power cam, backing off the limiter u will gain more bhp than a 6000rpm peak power cam
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thats again dependant on the cam profile though and not simply bunging the limit higher.
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15th April 2010, 21:01
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#137
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Frequent Poster
Join Date: Jan 2010
Location: Wakefield
Posts: 594
Car(s): seat leon fr
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omg too confusing i think someone has cammed your brain with a load of babble saxspeed
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15th April 2010, 21:02
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#138
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Established Member
Join Date: Mar 2010
Location: Cupar Fife
Posts: 1,712
Car(s): 1600 16v VTS
1600 8v VTR
1400 16v Clio Sport
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Quote:
Originally Posted by Bickerton
Why not?
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You wana prove to me that you can put ur car into 1st gear at cruising Dual Carageway speed?
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15th April 2010, 21:03
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#139
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Super Moderator
Join Date: Feb 2004
Location: Tonbridge United Kingdom (England)
Posts: 38,236
Car(s): Vtr, 172, throttle bodied track slut
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Quote:
Originally Posted by SaxSpeed
plus if you can get the ecu limiter removed or backed off a higher singing engine will preduce more revs obvuisly increasing bhp
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Quote:
Originally Posted by SaxSpeed
no what im saying is once fitted a diff cam, eg. higher peak power cam, backing off the limiter u will gain more bhp than a 6000rpm peak power cam
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15th April 2010, 21:04
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#140
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Saxperience Post Whore
Join Date: Apr 2007
Posts: 6,640
Car(s): Integra DC5R & VTS
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Quote:
Originally Posted by Ryan
thats again dependant on the cam profile though and not simply bunging the limit higher.
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Bingo. I fitted a Kent cam to my VTR and it still made peak power well before the limiter.
I wonder what the standard valve springs in a 1.1 look like at 9k revs.
__________________
Quote:
Originally Posted by saxo_ron
Anyhow I only live my life a cup of tea at a time and im all out so im off to boil the kettle
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