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Home > Help Needed / General Tech Chat > fuel return pipe on 998

clubby_turbo

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Member #: 403
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sydney Australia

15th Dec, 2005 at 02:33:12pm

g'day, maybe this should be in the 998 section but i'll give it a go here first, i'v got a 998turbo engine on the way and i'm planing on running all new breaklines and fuel lines, i'v already got the break lines and i was just wondering what size fuel lines to order (tank in boot to engine) i'v read the return line should be bigger but i dont know how big or if it differs between 998's and 1275's, any info appreciated. (been working 15-16 hours latley so might not reply for a while)

cheer's, chris

998 turbo


Tom Fenton
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Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner

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Rotherham South Yorkshire

15th Dec, 2005 at 02:38:49pm

The metro used a 1/4" feed, 5/16" return. This would probably be fine for your application.

Alternatively you can run 5/16" pipe for feed and return, but include a restrictor on the entry to the regulator on the feed line.

Some people run larger but this probably isn't needed for your 998.

I am personally using 8mm feed and return, with a restrictor.


On 29th Nov, 2016 madmk1 said:

On 28th Nov, 2016 Rob Gavin said:
 I refuse to pay for anything else


Like fuel 😂😂

wil_h

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Betwix Harrogate and York

15th Dec, 2005 at 03:02:46pm

I ran 5/16(8mm) feed and 1/4(6mm) return!!

Worked fine.

Will be running 5/16 (8mm) feed and return on new motor.

Wil

Fastest 998 mini in the world? 13.05 1/4 mile 106mph



On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination,
talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol

On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry.


Ben H

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Melton Mowbray, Pie Country

15th Dec, 2005 at 04:07:21pm

The fact that at full chat out car does about 3mpg indicates that it does need fuel lines of the same order as a 1300.....

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BENROSS

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Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

15th Dec, 2005 at 04:12:07pm

mines the same as toms

you can go down to your locall plumber merchants & get the heating microbore pipe

its cheap and made of copper

having said that you will not need centrall heating in aus!

clubby_turbo

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264 Posts
Member #: 403
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sydney Australia

17th Dec, 2005 at 11:14:10pm

ok, thanks, i think i'll go for the 6mm feed with the 8mm return but just out of curiosity, what is the advantage of using 8mm feed if you have to restrict it, wouldnt the 6mm do the job easier? (sorry if it's a stupid question)

cheer's. chris

998 turbo

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