displaying posts 1 to 22 of 22

Author Subject: Rolling Road Shootout day!
honestly3k

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Location: Berkhamsted

Registered: 06 Apr 2009

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Post #1
Hey chaps,

Took the 6 along today to a rolling road shoot out at Garage Streamline in Wandsworth Road, SW London......hosted by clubgti.com (VW) but open to all car makes and models. This RR garage has a reputation for having a brutally accurate roller setup

As it happens i was the only one representing team France today and im fairly happy with the results!

Very knowledgeable chap with a forum name of Toyotec was running the cars on the dyno initially said my car had some 'detonation' going on which is likely a result of me running it on regular 95ron unleaded and not recommended super unleaded...

Can anyone explain what 'detonation' is and what it means for a car as i am not familiar with the term? I gather its not really something you want happening? Unsure

Anyway heres some photos from the day, im having a printout of my results being sent to me in the post so all i have is a screenshot of the computer for the figures. Will update when i get the post through!















http://s956.photobucket.com/albums/ae44/honestly3k_2009/?action=view&current=VIDEO0024.mp4






Im pretty pleased with the result on the second run she made 162.6bhp and around 145 lbft of torque, less than 5bhp down on standard for a 12 year old car is pretty good going i think.
Toyotec also said that from looking at the fuelling, Peugeot designed these engines to overfuel at the top end to stop the cat from getting too hot and they essentially dump fuel through to keep the cat from overheating. Said a remap could sort this out? Is it detriment to the power when over fuelling?

My bro brought his mk2 golf gti 1.8 16v KR along and has been spending the last 8 months restoring the engine etc to the level it should be, his made 140bhp and around 135 lbft torque which is slightly more than standard so he was happy.





There was also an 800bhp Nissan GTR there which sadly i didnt get time to see on the rollers but i got a few shots....











Enjoy! Any comments/advice welcomed


Edit; please let me know if the video doesnt work!


________________________________________

''Oh, it does handle like a golf!'' Why drive a Golf....when you can drive a GTi-6?
Posted 7th Oct 2012 at 17:54
phillipm

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Location: Rotherham

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Post #2
If it was detonating it would be f**ked in short order.

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Posted 7th Oct 2012 at 17:58
stu

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Location: Milton Keynes

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Post #3
Detonation is when the air/fuel mixture burns unpredictably within the combustion chamber, basically it self combusts without the help of the spark plug. As you say, not something you want.

Although as Phill says, if this was happening then your engine would be destroyed in no time, so I doubt it is happening. Pretty poor diagnosis from the bloke IMO.
Posted 7th Oct 2012 at 18:07
mattgti6phase2

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Location: inside my 6 abusing the tarmac!!

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Post #4
^^
My thoughts also Chris.

________________________________________

Team Nile 6 Superman
Team: 40.2 MPG Smile
5 x a 306 owner!
currently abusing type r's in a town near you ™ Wink
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness Tee hee
Posted 7th Oct 2012 at 18:15
honestly3k

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Post #5
Cool, not sure how he would come to that conclusion just by standing next to it whilst it was running anyway.....

Well ive done 65K on the engine in 2 years and she goes well, so i doubt it is happening

Does anyone notice any differences in the way their 6's run in using the two different ron fuels?

Any comments on the results/figures? Smile

________________________________________

''Oh, it does handle like a golf!'' Why drive a Golf....when you can drive a GTi-6?
Posted 7th Oct 2012 at 18:20
woody.

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Location: London

Registered: 18 May 2009

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Post #6
Do these engines actually perform better with a 99ron fuel like v-power compared to the standard 95ron? It's only a 12 year old Peugeot at the end of the day?!
Posted 7th Oct 2012 at 18:29
mattgti6phase2

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Post #7
woody. wrote:
Do these engines actually perform better with a 99ron fuel like v-power compared to the standard 95ron? It's only a 12 year old Peugeot at the end of the day?!


No

Unless the Ecu is mapped to run higher octane rated fuel. Real gains are to be had from highly tuned NA motors and or turbo/supercharged cars.

________________________________________

Team Nile 6 Superman
Team: 40.2 MPG Smile
5 x a 306 owner!
currently abusing type r's in a town near you ™ Wink
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness Tee hee
Posted 7th Oct 2012 at 18:51
eliotrw

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Post #8
Actually a 6 is mapped for 97 which is why it is recommended in the manual.
The manual is like most where they will say 95 is recommended And 97 can be used to no effect.
It literally says "97 isnt recommended"
Autodata says the same.

When i use 97/99 it has always felt smoother and sounded slightly better. Althoughbibhavent used 97+ post engine rebuild

Also you shouldnt use tesco 99 in any xu peugeot due to the ethanol content

________________________________________

Ex- Phase 3 China GTi-6 T-Reg
Posted 7th Oct 2012 at 19:03
6waysforward

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Post #9
I use bp ultimate 97ron.

Car has a bit of a stoppy when i put nomal fuel in Smile

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Posted 7th Oct 2012 at 19:14
heidi6

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Post #10
eliotrw wrote:


Also you shouldnt use tesco 99 in any xu peugeot due to the ethanol content


Where does this little nugget of info come from? I do about 300 miles a week and only use Tesco 99. I get about 3mpg more than standard unleaded.

________________________________________

I live work (to pay) for the 306

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Posted 7th Oct 2012 at 19:19
monty-69

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Post #11
All that money for a rolling road but no sense to put up a light bulb Dunno
Posted 7th Oct 2012 at 19:19
eliotrw

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Post #12
Thats what i used to find also, Its seems to idle rougher and when it would be close to stalling give up pretty easily.

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Ex- Phase 3 China GTi-6 T-Reg
Posted 7th Oct 2012 at 19:20
adam b

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Location: The Nam

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Post #13
Never had a problem on 95 octane in mine over 65k miles.
Anyway it could just be the cam timing is slightly retarded. You could gain maybe 10lbft by advancing the cams Smile

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Nothing to see here
Posted 7th Oct 2012 at 19:56
eliotrw

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Post #14
Yeah I had that issue before pre head rebuilt but now its sorted, Must try 97 again

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Ex- Phase 3 China GTi-6 T-Reg
Posted 7th Oct 2012 at 20:02
coskev

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Location: Oswestry

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Post #15
honestly3k wrote:
Cool, not sure how he would come to that conclusion just by standing next to it whilst it was running anyway.....


Det is also sometimes called pinking,which can be heard from listening to an engine.

When people custom map cars they usaully use det-cans,they are attached to engine and the mapper has earphones in so they can hear the slightest det happening.

Det won't allways kill an engine,you can get slight det that will be heard but is so small it does not damage anything.Thumbs up

If your det was bad he would not have run the car up on the rollers for a second timeNo

________________________________________

Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........

Mac1 ZR R1 kit car build in progress.
Posted 7th Oct 2012 at 20:51
eliotrw

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Post #16
heidi6 wrote:
eliotrw wrote:


Also you shouldnt use tesco 99 in any xu peugeot due to the ethanol content


Where does this little nugget of info come from? I do about 300 miles a week and only use Tesco 99. I get about 3mpg more than standard unleaded.

i used to have something concrete that made me think, f**k THAT, but now i cant find it. I think the jist was that it would eat the various rubber seals, injector ones etc

________________________________________

Ex- Phase 3 China GTi-6 T-Reg
Posted 7th Oct 2012 at 21:15
phillipm

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Location: Rotherham

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Post #17
Pinking ain't the same as detonation though.

Det cans pick up pinking, but detonation means you're picking up pistons....

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- Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM me
Email me!
Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces.
Posted 7th Oct 2012 at 21:22
coskev

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Location: Oswestry

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Post #18
phillipm wrote:
Pinking ain't the same as detonation though.

Det cans pick up pinking, but detonation means you're picking up pistons....


Pretty sure that det and pinking are the same thingDunno

http://en.wikipedia.org/wiki/Engine_knocking

________________________________________

Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........

Mac1 ZR R1 kit car build in progress.
Posted 8th Oct 2012 at 19:06
fletch

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Post #19
ECU will pull timing anyway if knock sensor detects a problem, would prob expect it to come out with a poorer result than that if it were the case though.
Posted 8th Oct 2012 at 19:48
m306

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Location: south coast

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Post #20
eliotrw wrote:
heidi6 wrote:
eliotrw wrote:


Also you shouldnt use tesco 99 in any xu peugeot due to the ethanol content


Where does this little nugget of info come from? I do about 300 miles a week and only use Tesco 99. I get about 3mpg more than standard unleaded.

i used to have something concrete that made me think, f**k THAT, but now i cant find it. I think the jist was that it would eat the various rubber seals, injector ones etc

When i had mine supercharged i asked Rich W about which fuels he recommended and which to avoid and he said that he had them tested and v power was best then tesco 99 second and that those two were the only ones to use in a sc6, so ive been using tesco 99 and havent had any issues.

________________________________________

supercharged China gti6 - Thu 16th Sep 1999 - sold
2010 megane rs250
Posted 10th Oct 2012 at 20:24
honestly3k

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Location: Berkhamsted

Registered: 06 Apr 2009

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Post #21
Here we go.....looks pretty standard right?

________________________________________

''Oh, it does handle like a golf!'' Why drive a Golf....when you can drive a GTi-6?
Posted 13th Oct 2012 at 17:39
honestly3k

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Location: Berkhamsted

Registered: 06 Apr 2009

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Post #22
So this is what the chap 'Toyotec' had to say about the car

'Based on the general trend that OE spec vehicles achieve on these rolls, A bit short on the 167bhp@6500rpm claim by Peugeot. I did hear some det on tip in and there was oscillated over-enrichment throughout the test sweep, which contributed in the wavy torque profile. Also observed was the step in torque at high rpm, which would have been part responsible to reduce the power from the homologated 167bhp at full chat. Still sounded very good on the dyno and of course a much more powerful base engine, given it’s wide angle 45 deg + between valves and 86x86 configuration than the compromised narrow angle, long stroked ABF motors.'

Be interesting to hear any feedback from people in the know on this forum and what they think about it Smile

________________________________________

''Oh, it does handle like a golf!'' Why drive a Golf....when you can drive a GTi-6?
Posted 14th Oct 2012 at 12:26

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