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View Full Version : !.2i Fuel tank - GSI conversion



Adam Moran
03-04-03, 09:56 PM
Will my 1.2i fuel tank and fuel lines be ok if i put a GSI lump in?

If the answer is yes then the conversion will happen next Saturday!!

Cheers

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mikeoxford
03-04-03, 10:00 PM
Will my 1.2i fuel tank and fuel lines be ok if i put a GSI lump in?
If the answer is yes then the conversion will happen next Saturday!!
Cheers
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i was about to reply then thought id better check with guru aragorn!

i was going to reply no there different, which they are

but apparently with what your trying to do they will work

so go for it :lol: 8)

mikeoxford
03-04-03, 10:01 PM
further investigation shows 1.2i lines are plastic and the gsi are steel


and also the fuel pumps on the spi (1.2) are smaller too

Adam Moran
03-04-03, 10:13 PM
ok then, so for the first couple of weeks i will be fine but i should upgrade the fuel pump and lines.

Well its all good news! Farliy quick car here i come!

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Adam Moran
03-04-03, 10:14 PM
ok then, so for the first couple of weeks i will be fine but i should upgrade the fuel pump and lines.

Well its all good news! Farliy quick car here i come!

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mikeoxford
03-04-03, 10:16 PM
itll be fine m8 u shudnt need to change

Tazzy
03-04-03, 10:28 PM
i need to ask the same question!

most of you know, i have the gte (1.6) but want to drop in the 2.0 8v, will i have to change fual tank, lines or pump?

mikeoxford
03-04-03, 10:32 PM
i need to ask the same question!

most of you know, i have the gte (1.6) but want to drop in the 2.0 8v, will i have to change fual tank, lines or pump?

andy mate meet up with us one night

ive done the conversion ennit

mark_GSi
04-04-03, 02:30 PM
if u change from a 1.2i 2 a 1.6 u WILL NEED 2 CHANGE THE FULE PUMP AND TANK. i had 2, ran REALLY crap before i changed it. :?

1.2i fuel pumps runs at 0.76bar

1.6 GTE/GSI runs at 3 bar

MASSIVE diff :roll:

if u run the 1.6 with the 1.2 pump it will run but want go very fast, mine did, had 2 change 2 the 1600 tank as the fuel pump sits in the tank on the 1.2i but outside on a 1600

hope this helps as ive been there :)

Ste_Nova
04-04-03, 03:51 PM
i run 1.2i tank and lines with my 2.0 16v, and so does rob with his 330bhp spider... i've upgraded from the under pressured 1.2i pump (it was fine for 3 months) to a vectra intank pump, rob has gone one stage further with an intank escort cossie 500bhp fse pump

much neater than the gte/gsi/sri external setup

Adam Moran
04-04-03, 06:18 PM
confussed now!

if i put the GSI fuel pump in the 1.2i tank i should be ok right?

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Snowface
04-04-03, 09:58 PM
what a bout a 1.2 mk1 nova? (non injection) would you have to replace the lines and tank on that to put in the GSI or how bout the Corsa 16v GSI? I know you have to for the 1.0 nova's.

Chris S
05-04-03, 04:59 AM
I agree with ste on this 1, herd on many occasion that the spi runs at 1 bar and the 1.4 sri,1.6 Gsi, and all vectra, cav's with 2.0 runs at 2.0 bar. when the LET goes in my Spi it will have an in tank 2.0 bar pump, and i'm quite sure it will run right

Aragorn
05-04-03, 06:27 PM
the PUMP doesnt create the pressure, the pump creates flow

the regulator in the fuel rail creates the pressure, SPI runs at 0.76 bar, Bosch L3.1 Jetronic runs at 2.5bar and the rest run at 3 bar iirc

the 1.2i pump's FLOW is perfectly adequate for a 1.6 and goin by what ste says a 2.0 16v too

i recon it would prolly begin to struggle under tuned XE's, LET's and possibly even heavily tuned 1.6's

but its perfectly adequate for a standard or mildly tuned GTE lump

Ste_Nova
05-04-03, 07:56 PM
yes but i burned out my 1.2i pump after 10k miles of 16v

mikeoxford
06-04-03, 04:14 AM
going back to your regulator theory aragorn.

when we did the 2ltr 8v conversion on my mates car, it appeared to be adjustable? is it?

Aragorn
06-04-03, 06:34 PM
the standard one is fixed as far as i know

FSE and others to adjustable ones tho

mikeoxford
06-04-03, 11:31 PM
the standard one is fixed as far as i know

FSE and others to adjustable ones tho

would he see any gains from fitting an adjustable one to up the fuelling a bit?

Adam Moran
07-04-03, 06:23 PM
would he see any gains from fitting an adjustable one to up the fuelling a bit?

Was this aimed at me Mike?? If so the engine im getting fitted has got one on already!

Cheers

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mikeoxford
07-04-03, 07:39 PM
going back to your regulator theory aragorn.

when we did the 2ltr 8v conversion on my mates car, it appeared to be adjustable? is it?

nah read above ^^^^ i meant the 2ltr 8v we just did.

cheers m8

locky
07-04-03, 09:02 PM
When i fitted my pump, it had a pressure regulator next to it! im certain they are adjustable, although i didnt try it, but it has a grub screw, with a square head goin into it!

mikeoxford
07-04-03, 09:30 PM
When i fitted my pump, it had a pressure regulator next to it! im certain they are adjustable, although i didnt try it, but it has a grub screw, with a square head goin into it!


what you have described was on our 2ltr 8v also locky.

where did you fit your pump.........?

Tazzy
07-04-03, 09:53 PM
so is it possible to whack on the fuel tank, pump and lines from a 1.6 GTE/GSi onto a 1.2i? if so, is there any gain at all?