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General => The garage => Topic started by: dubslug on 28 June 2004, 17:18

Title: any ideas??
Post by: dubslug on 28 June 2004, 17:18

wot would happen if i fitted a 1.8 webber carb to my 1.6?? over fuel run rich etc??
engine has 1.8 8v manifold and cam too.
plz help as my carbs playing up loads

Title: Re:any ideas??
Post by: Veedubgt18v on 28 June 2004, 17:32

if you increase the air and fuel into an enigne it will produce more power. im not sure about the carb thing tho, if you did then you may have to get the carb etc set up. cant think why tho

Title: Re:any ideas??
Post by: VeeDubGTI16v on 28 June 2004, 17:50

i think the carbs will be the same, it might be the size of the jets which is different ???

Title: Re:any ideas??
Post by: rubjonny on 28 June 2004, 18:15

The jets for the 1.6 and 1.8 are different.
Someone said you can use the 1.8 jets without problems, but the guy was trying to sell a 1.8 version on ebay so I dunno how reliable his word is :)

Basically budget for replacement jets just in case it don't run right.

Title: Re:any ideas??
Post by: mk1 on 28 June 2004, 21:47

I think that webber lists the carbs as the same for both engines.
Steve.

Title: Re:any ideas??
Post by: rubjonny on 29 June 2004, 09:51

Yea the carbs are identical, its just the fuel jets that differ.

Title: Re:any ideas??
Post by: golfvr6 on 29 June 2004, 10:14

You can run stage 2 jet even bigger, as long as you got a performance filter and exhaust.
Easy to do, take the top half of the carb off, the jets are in the bit above where the fuel sits (the floats), remove stage 2 jet, drill it out (only slightly), then put it back together.
The job can be done with the carb still on the car  :)

Title: Re:any ideas??
Post by: davidhawkins_78 on 29 June 2004, 11:46

Drilling jets - you cowboy !! ( Yeeee ha  ;D )

Jetting is very precise. The main jet size is based on the revs your car is pulling at peak power plotted against the engine size if memory serves me right. The jet itself has many components that can be altered for different performance.

I'd say go for it and see what happens - the see if she's running rich or lean run look at the condition / glazing of the plugs.

Here's so info - it's not the same carb, but the princibles are the same and should help you out.

http://members.aol.com/dvandrews/webers.htm

Title: Re:any ideas??
Post by: golfvr6 on 29 June 2004, 13:40

Thats the idea mate  :D
Don't mess with stage 1 jet, get severe driveability problems!
Stage 2 jet on the other hand, thats for when you open the throttle right out, its fine to have a slightly richer mixture at high rpm.