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Author Subject: will different shape'd injectors fit?
vts_tibi

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Location: Nuneaton

Registered: 27 Apr 2007

Posts: 1,194

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Post #1
Hi Guys,

I have a simple question here... I would like to run my car on E85, and the guy who mapped my VEMS said that the original injectors run at 78% duty cycle, so they are not enough to get the full potential out of E85.

For best performace (wihtout close to 100% duty cycle) I would need injectors around 395cc/min flow rate.

(originals being 265cc @ 3bar, he said a 1.5x times bigger should be a good starting point, so 265 x 1.5 = 397,5)

I've found Volvo 395cc injectors, but they are not the "fat" bosch injectors, but the thinner ones, like a pencil.



would these fit into the inlet manifold and the fuel rail without a problem and air or fuel leak?

Cheers,

Tibi

________________________________________

VTS
best 60' : 2.272
best 1/8 ET : 9.375 @ 74.42mph
best 1/4 ET: 14.603 @ 97.047mph

Team Trackday™
Posted 11th Jan 2011 at 00:43
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cwspellowe

Seasoned Pro

Location: Calderbank

Registered: 19 Jul 2009

Posts: 6,496

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Post #2
It all depends on seal size. If the seals are the same diameter as the original Weber injectors then yes, they'll fit, but you may need to modify the brackets that bolt in fuel rail down by changing the length so the injectors are clamped down tight.

________________________________________

Bye bye Sundance Kid Sad
Posted 11th Jan 2011 at 01:04
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mechanical_repairs

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Location: leicester

Registered: 10 Jan 2005

Posts: 12,122

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Post #3
The size of them will not cause a problem, just make sure the tops and bottoms are the correct size and that it.

Carl

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Posted 11th Jan 2011 at 02:52
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rallyeash

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Location: Devizes

Registered: 11 Dec 2006

Posts: 4,424

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Post #4
ive just fitted the same looking injectors in my gti6'd 205. it fits the standard rail and injector holes, although my injectors were 8 x 220cc but look identical

________________________________________

230 hp 2.1 16v XU 205 rallye on jenveysHyper Project thread here
309 3dr K20 Type R
Posted 11th Jan 2011 at 03:52
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vts_tibi

Seasoned Pro

Location: Nuneaton

Registered: 27 Apr 2007

Posts: 1,194

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Post #5
Thanks guys Wink

________________________________________

VTS
best 60' : 2.272
best 1/8 ET : 9.375 @ 74.42mph
best 1/4 ET: 14.603 @ 97.047mph

Team Trackday™
Posted 12th Jan 2011 at 01:08
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vts_tibi

Seasoned Pro

Location: Nuneaton

Registered: 27 Apr 2007

Posts: 1,194

Status: Offline
Post #6
OK, an other question here LOL

I've pretty much found the injectors I want, but I would like to make sure they fit...

The lower and upper O rings are D=14mm (I guess that's the outside diameter..)

And 64mm from upper to lower O ring.




Will these fit into the original GTI6 manifold and fuel rail without any leak?

________________________________________

VTS
best 60' : 2.272
best 1/8 ET : 9.375 @ 74.42mph
best 1/4 ET: 14.603 @ 97.047mph

Team Trackday™
Posted 28th Jan 2011 at 17:50
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vts_tibi

Seasoned Pro

Location: Nuneaton

Registered: 27 Apr 2007

Posts: 1,194

Status: Offline
Post #7
bump!

can anyone tell me the original GTI6 injector seal dimensions?

________________________________________

VTS
best 60' : 2.272
best 1/8 ET : 9.375 @ 74.42mph
best 1/4 ET: 14.603 @ 97.047mph

Team Trackday™
Posted 31st Jan 2011 at 18:58
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cwspellowe

Seasoned Pro

Location: Calderbank

Registered: 19 Jul 2009

Posts: 6,496

Status: Offline
Post #8
According to the seal kit i have in front of me they're 14mm seals Yes

________________________________________

Bye bye Sundance Kid Sad
Posted 1st Feb 2011 at 05:37
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vts_tibi

Seasoned Pro

Location: Nuneaton

Registered: 27 Apr 2007

Posts: 1,194

Status: Offline
Post #9
cwspellowe wrote:
According to the seal kit i have in front of me they're 14mm seals Yes


Thanks! Wink

________________________________________

VTS
best 60' : 2.272
best 1/8 ET : 9.375 @ 74.42mph
best 1/4 ET: 14.603 @ 97.047mph

Team Trackday™
Posted 1st Feb 2011 at 12:37
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