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Author Subject: S/C starting
simonjames

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Location: Whitland S.Wales

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Post #1
Last month the rallye failed to start I found that the plugs were not sparking to the tip ( ngk irridium 7s fitted) I then read that 8s were better for track use so ordered some irridium 8s but on fitting them it turns over fires then stalls a few times before it will run is this down to colder plugs or due to boost pipe closing up on turn over

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Posted 17th May 2011 at 01:55
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mabgti

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Post #2
nope... i ran 8's with nitrous with no problems a few years back

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Posted 17th May 2011 at 02:07
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simonjames

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Location: Whitland S.Wales

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Post #3
Must be the pipe collapsing then

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Posted 17th May 2011 at 02:17
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greenbelt

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Location: How's Life In London?

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Post #4
Any length of silicone will collapse on idle Yes

The only way to eliminate it is to get solid pipes made to measure.

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Posted 17th May 2011 at 02:49
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simonjames

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Location: Whitland S.Wales

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Post #5
Yeah I know I only have the reducer 45 on the charger the rest is solid

Another thought is that its mapped with 2" pipe but I've now fitted 2.5"

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Posted 17th May 2011 at 03:08
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spiky

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Location: Cardiff

Registered: 13 Oct 2006

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Post #6
mine will start and run with a collapsed pipe, so you can eliminaten that

infact i'm pretty sure i started mine without a boosy pipe connected


you have other issues

try looking at the crank sensor or the double relay

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Posted 17th May 2011 at 12:57
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simonjames

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Location: Whitland S.Wales

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Post #7
Crank sensor and multi relay both been swapped from my other 306 so i know they are fine, before fitting the boost pipe work it wouldnt start though i thought this was normal as when the pipe work was on all was fine untill i fitted the clamps and the pipe started closing up, it closes so far that i'd say it stops any air flow so i have no doubt that it is a factor but not sure if its the only problem

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Posted 17th May 2011 at 14:53
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spiky

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Post #8
ah ok, when mine closed up (before fitting metal) it would still tick over but it didnt fully close, like yours

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Posted 17th May 2011 at 14:57
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simonjames

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Post #9
im thinking about cutting a small piece of pipe say 20mm wide and slide that inside the bend so there's less chance of it closing all the way

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Posted 17th May 2011 at 15:08
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spiky

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Post #10
thats exatcly what i have done and it seems fine,

track day next week so will see how it holds up, but has been fine for WOT on the road

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Posted 17th May 2011 at 15:11
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simonjames

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Post #11
Great thats what i'll do then when its in the air having the decat fitted

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Posted 17th May 2011 at 15:14
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birk

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Location: Doncaster

Registered: 24 Oct 2005

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Post #12
Take a boost pipe off the inlet and turn the car on, if it revs up on its own then you know its the pipe work thats the problem.

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Posted 17th May 2011 at 17:27
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simonjames

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Location: Whitland S.Wales

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Post #13
I just put some std 6 ngk's (standard engine part) and it fired up fine so im thinking i might just fit irridium 7s and see what they are like

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Posted 17th May 2011 at 17:59
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spiky

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Location: Cardiff

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Post #14
i'm using
NGK Spark Plug - Reference: BKR8EIX

i though 7's weere wrong?

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Do you need a 205 > 306 gti6 plug and go engine loom? PM ME

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SUPERCHARGED 205 GTI6.... are you Fooking nuts!.... ummmm YIP Smile

268+BHP and 860kg = FUN
Posted 17th May 2011 at 18:01
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rich_w

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Location: Havant, Hampshire

Registered: 29 Jul 2004

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Post #15
The problem is the plugs - 8's are too cold for a low-boost unless it's a pure track / race car and constantly thrashed.

The problem is they won't be getting hot enough for the self-cleaning process to work, they will be getting fouled up very quickly, and that's why it's not running.

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Posted 17th May 2011 at 18:02
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spiky

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Location: Cardiff

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Post #16
ah glad you posted, was going to point him towards this threaad

http://www.306gti6.com/forum/showthread.php?id=128248&page=1

mine's a track car so happily sticking to your advice and using 8's

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Do you need a 205 > 306 gti6 plug and go engine loom? PM ME

TORQUES for all your braided fuel line needs

MY YouTube Videos'

SUPERCHARGED 205 GTI6.... are you Fooking nuts!.... ummmm YIP Smile

268+BHP and 860kg = FUN
Posted 17th May 2011 at 18:06
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lotek

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Post #17
and thats How for nowwwwwww... LOL
Posted 17th May 2011 at 18:06
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simonjames

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Post #18
It will be a track car that will also be used on road, since fitting the 8s its only run for 10mins for 3-4 times, so i might just get some 7s for road use and refit the 8s when going out on track

Cheers Rich for clearing that up Smile

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Posted 17th May 2011 at 18:10
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spiky

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Location: Cardiff

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Post #19
i've started mine quite a few times tickover and starting has been perfect

not seen a track yet,

pottle about or flat out it's been sweet,

________________________________________

Do you need a 205 > 306 gti6 plug and go engine loom? PM ME

TORQUES for all your braided fuel line needs

MY YouTube Videos'

SUPERCHARGED 205 GTI6.... are you Fooking nuts!.... ummmm YIP Smile

268+BHP and 860kg = FUN
Posted 17th May 2011 at 18:16
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simonjames

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Location: Whitland S.Wales

Registered: 23 Nov 2004

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Post #20
Not sure why mine would be different then, maybe the map being done on 2" pipe standard pulleys and flywheel and now it has 2.5" pipe solid pulley and lightened flywheel

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Posted 17th May 2011 at 18:23
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spiky

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Location: Cardiff

Registered: 13 Oct 2006

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Post #21
was the 2" a custom map or is that what they are all mapped for

only asking as currently i only have a 2" and i'm going for a 2.5"

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Do you need a 205 > 306 gti6 plug and go engine loom? PM ME

TORQUES for all your braided fuel line needs

MY YouTube Videos'

SUPERCHARGED 205 GTI6.... are you Fooking nuts!.... ummmm YIP Smile

268+BHP and 860kg = FUN
Posted 17th May 2011 at 18:25
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simonjames

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Location: Whitland S.Wales

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Post #22
it was custom as far as i know

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Posted 17th May 2011 at 18:34
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