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Model specific boards => Golf mk4 => Topic started by: Tezmax on 23 October 2012, 17:23

Title: Catch Can
Post by: Tezmax on 23 October 2012, 17:23
Emptied my catch can today and was expecting an oily kind of liquid but
found it half full of murky, rusty water with a tint of petrol smell :shocked:

Tell me this is normal please :smiley:

Thanks.
Title: Re: Catch Can
Post by: GTi_James on 23 October 2012, 18:03
done over 1700miles and only now have to change my catch, sign of a healthy engine  :cool:
Title: Re: Catch Can
Post by: Wazzzer on 23 October 2012, 19:40
it's not rusty water, just oily
Title: Re: Catch Can
Post by: marcevs72 on 27 October 2012, 21:06
that is perfectly normal.had catch can set up on my last trackday scooby and all that ever came out was petrol smelling water...sign of a decent running engine.turbo cars run better with a catch can anyway as the oil mist that it catches would normally go back into intake and that reduces the octaine rating of the fuel.saw an extra 11bhp on my scooby after fitting one.
Title: Re: Catch Can
Post by: GTi_James on 27 October 2012, 21:07
that is perfectly normal.had catch can set up on my last trackday scooby and all that ever came out was petrol smelling water...sign of a decent running engine.turbo cars run better with a catch can anyway as the oil mist that it catches would normally go back into intake and that reduces the octaine rating of the fuel.saw an extra 11bhp on my scooby after fitting one.

+1
Title: Re: Catch Can
Post by: Wazzzer on 28 October 2012, 09:49
oil vapour lowers the octane of fuel
Title: Re: Catch Can
Post by: Wazzzer on 28 October 2012, 11:17
probably not on a Golf but you never know with Jap
Title: Re: Catch Can
Post by: markgti1.8t on 28 October 2012, 11:59
hi there does anyone know the thread size of the 10mm and 15mm fittings for this catch can

http://www.ebay.co.uk/itm/Black-Alloy-Oil-Catch-Tank-Can-10mm-15mm-Inlets-Rover-100-200-25-45-400-Mini-/360498077247?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item53ef5c1e3f&_uhb=1
Title: Re: Catch Can
Post by: GTi_James on 28 October 2012, 12:05
10mm and 15mm?  :undecided:
Title: Re: Catch Can
Post by: marcevs72 on 28 October 2012, 12:14
probably not on a Golf but you never know with Jap
mine ran only on 99ron fuel and the car ran so much smoother after the can was fitted.you should check the inside of your intercooler and see how much oil vapour is going into your intake.well worth while mod and even fitting my spare one into my mk4 1.8t even though its standard.
Title: Re: Catch Can
Post by: Wazzzer on 28 October 2012, 12:24
No need to sell it to me mate, I was one of the first on here to fit one :afro:
Title: Re: Catch Can
Post by: markgti1.8t on 28 October 2012, 14:56
10mm and 15mm?  :undecided:

not the nut the thread
Title: Re: Catch Can
Post by: rio_gti on 28 October 2012, 17:01
its an odd thread (not BSP) if i remember correctly think it might be an american thread or summit, ill check tomorrow gimmi a poke so i remember!!
Title: Re: Catch Can
Post by: markgti1.8t on 28 October 2012, 17:16
cool thanks need to get the 19mm ones made  :smiley:
Title: Re: Catch Can
Post by: rio_gti on 28 October 2012, 17:19
tbh there is no point as the thread is still gonna be about 15mm so its gonna reduce into the can anyway, you may aswell do what i done and put a piece of rubber hose onto the 15mm nipple and the 19mm hose pushes over that. works perfectly  :wink:
Title: Re: Catch Can
Post by: markgti1.8t on 28 October 2012, 17:40
i did think about that wasn't sure it would work will just do that then cheers will be fitting it tomorrow then  :smiley:
Title: Re: Catch Can
Post by: GTi_James on 29 October 2012, 08:19
or you can purchase actual reduces from the bay a dozen a dime, i'm using them, cant tell theyre there and its water tight  :cool: