Ben_Copeland
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| posted on 19/4/09 at 03:39 PM |
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GSXR 750 Vacuum Pipes
Just got some throttle bodies and have a question. (there going on a vaux XE)
 
GSXR 750 SRAD 1999
1. Is vacuum, but is it meant to be blanked off like the others or does it go somewhere?
2. Believe this is Fuel Return from the Pressure Reg?
3. Makes that Fuel In straight into the fuel rail?
Time to take them apart and start measuring up to make an inlet manifold and fuel rail 
Thanks in advance
Ben
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donn006
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| posted on 19/4/09 at 06:02 PM |
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hi ben you can link the vacum pipes together and just block of the end one as for the fuel pipe it depends on if you are going to separate the boddies
if so then the fuel rail is no good if you need more info let me know
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Ben_Copeland
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| posted on 19/4/09 at 06:06 PM |
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Hi mate, was gonna ring ya but not had a chance and didnt wanna bother ya.
If you can send me any info ya got on the XE install that would be really really handy.
Will be respacing them, was going to buy a blank fuel rail off ebay...
Ben
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flak monkey
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| posted on 19/4/09 at 07:35 PM |
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Blank 1 off, or connect all of the ports together and use them to connect to the external fuel pressure reg.
2 is probably the vacuum connection to the pressure reg on the fuel rail?
3 is the main fuel feed.
You'll need a 10.8mm drill for the fuel rail, dill it nice and slow and chamfer the holes otherwise you'll rip the o-rings on the
injectors.
Sera
http://www.motosera.com
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Ben_Copeland
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| posted on 19/4/09 at 08:36 PM |
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Fuel Connections
Na its the return surely? The smaller pipe is vacuum
quote:
Originally posted by flak monkey
2 is probably the vacuum connection to the pressure reg on the fuel rail?
Ben
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Z20LET Astra Turbo, into a Haynes
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flak monkey
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| posted on 19/4/09 at 08:54 PM |
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Yep, you are right. Wasnt sure what the set up was on the fuel rail.
David 
Sera
http://www.motosera.com
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corpi
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| posted on 19/4/09 at 09:16 PM |
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Sorry to hijack this thread...
but the injectors on this setup have the same colour as mine, but i could not find any info (capacity) on the interweb. mine have the markings: 31
730 and 3380 and came off a GSXR 750 looking exactly like tho one on the photos.
does anyone know what capacity they have? Or where to find it?
any info gratefully recieved.!
BTW the info regarding the connections i s correct,
1) vacuum connection for balancing the bodies, and should normally be blocked off
2) fuel return from regulator
3) High pressure fuel from pump to fuel rail.
Pieter
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Ben_Copeland
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| posted on 20/4/09 at 07:03 AM |
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According to this website
Pre 2000 injectors are 190cc/ms
The rest are on the website too
[Edited on 20/4/09 by Ben_Copeland]
Ben
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corpi
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| posted on 20/4/09 at 07:59 AM |
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Thanks! i'd seen the site, but don''t know from which year my bodies & injectors are.
Pieter
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