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Forge Dump Valve Help
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Old 26 Jan 2005, 01:32 PM   #1 (permalink)
Young Scooby
 
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Forge Dump Valve Help

Sorry this may sound like a stupid question but have just got a forge dump valve and there are no fitting instructions, i have heard other people say its a sinch to fit but not sure myself can any1 point me in the right direction and is there any do's or dont's also in the box came what looks like a blanking cap is this used or what is it for ?

Cheers Dave
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Old 26 Jan 2005, 01:53 PM   #2 (permalink)
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Hi Dave

Can you tell me what year Scoob you have ? As different years can fit slightly differently

Its not difficult to fit honest The plug you have is for blanking/plugging the recirculating pipe that is currently connected to you oem dump valve.

If I know what year you have then I can give you some instructions
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Old 26 Jan 2005, 01:58 PM   #3 (permalink)
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Hello Dave - some pics here - think i remember you saying you had a 03 wrx?

Take a look at these pics:

http://www.subaru-impreza.org/subaru...ghlight=#30737
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Old 26 Jan 2005, 08:02 PM   #4 (permalink)
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Hi, if its the 03 you have then its a doddle :wink:

All you need is a 12mm socket and rachet and a screwdriver to undo the hose clamp.

1. Carefully remove the small diameter hose from the dumpvalve body
2. Undo the two screws holding the oem dumpvalve onto the intercooler body, and carefully remove as there is a gasket behind.
3. undo the hose clamp.
4. fit the blank plug in the hose and nip up without over tighening!
5. fit the new dumpvalve to the intercooler, using the new gasket if provided, or the old one.
6. push the small hose back on.
7. carry out an ecu reset
8. Enjoy the sound :wink:


Buzz
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Old 27 Jan 2005, 05:18 PM   #5 (permalink)
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cheers Guys

Thanks for your help again fella's

It was a easy job to fit 5 mins, re set the ecu and took it for a spin, love the forge Bov, its really subtle when you want to drive normal and when the devil is in u wow what a sound, had a grin on my face all last night just had too drive the car over and over again. Thanks for all your help, Just looking forward to the front spoiler arriving and getting everything painted up then will on cloud nine with the car.

Cheers again Dave
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Old 27 Jan 2005, 07:23 PM   #6 (permalink)
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nice one :wink:

Buzz
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Old 27 Jan 2005, 07:48 PM   #7 (permalink)
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Nice one mate
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Old 22 Feb 2005, 09:41 AM   #8 (permalink)
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hello bud,
I have been looking at that dump valve for my car,so would you recomend it?.
Have you had any probs sinse fitting,also how do you reset the ecu?
Thanks
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Old 22 Feb 2005, 09:52 AM   #9 (permalink)
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Just be sure to order the spring kit from Forge at the same time - cos you will then be able to play with the spring stiffness to get it running spot on
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Old 22 Feb 2005, 01:08 PM   #10 (permalink)
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Hi

Honest it was a sinch 2 fit even though it came with no instructions. 5 mins max just unbolted the old unit and the new fitted on direct put the blanking dung in and that was it job done.
Since its been on had no trouble at all notice a differance in turbo lag or should i say lack of it and the sound is nice 2. its not a harsh sound u can drive normally and not notice it but when the :twisted: is in you it sounds great.

Dave
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Old 22 Feb 2005, 01:12 PM   #11 (permalink)
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Nice work Dave... glad it fitted ok... and i bet it sounds :P 8)
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Old 22 Feb 2005, 01:15 PM   #12 (permalink)
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Cheers Gareth

It is sweet when i can get my hands on the car, the wife has decided its her new toy now :x :cry:
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Old 22 Feb 2005, 01:17 PM   #13 (permalink)
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HI all, I fitted a Forge VTA dump valve to my scooby (MY00), about a year ago.
I bought it second hand from Ebay for about 75. After about 6 months, it started to stick in the 'shut' position. I cleaned it up a bit but this made no difference so I rang Forge for advice.
They were very helpful and said they hadn't heard of it happening before and would send me a free service kit. The kit arrived the next day and contained all the inner workings of the dump valve (piston, spring, even new grease!). I changed all the parts over and re-greased and it has been perfect ever since.
I would strongly recommend this product to any Scooby owner!

Nelson, can you please explain what the spring kit is, do they supply different strength springs to alter the sound?

Many Thanks,

Mickey.
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Old 22 Feb 2005, 01:27 PM   #14 (permalink)
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Hi Mickey - the spring kit alters the strength of the inner diaphram (sp)

Basically they do yellow, green, blue and red springs. Red being the strongest I think most d/v's from Forge for Scooby fitment come with blue springs and this can cause running problems (where the valve opens to early) ask Newie he had this problem. However either changing the spring or adding some shims can help to sort things out.....I run a red spring in my Forge Recirc...and it is perfect !

So in effect a stronger spring would probably change the amount of RPM you get when you here it Vent to Atmosphere and may well alter the sound/pitch of the sound.
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Old 22 Feb 2005, 01:38 PM   #15 (permalink)
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Thanks Nelson, if memory serves I think the spring in mine was indeed blue.
I haven't noticed any running problems with it though. If the spring is too soft and opens the valve too early, how can that cause a problem, (Please keep explanation in simple terms!! )

Thanks again,

Mickey.
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