WikiWirral Share a Little Learn a Lot about your Wirral
Forum Stats
12133 Members
65 Forums
72378 Topics
976013 Posts
15 posts in the last 24hrs
Max Online: 7831 @ 8th Apr 2013 4:18pm
Who's Online - Click Me
77 registered (11kendo, 12 invisible), 1471 Guests and 191 Spiders online.
Key: Admin, Global Mod, Mod
Social Media : Follow Us


(Views 7days)This Weeks Most Read
Wirral Globe 499
Pensby Hotel 484
Sports Personality Of The Year 426
Raspberry Pi in the classroom! 366
PC Repair needed 298
Name help 292
HMT Lancastria 287
Paul Nuttall Elected UKIP leader 185
Another Big Waste Fire in Liverpool. 164
54 plate renault clio 3rd brake light 149
New General Forums
Lib/dems rule the day
by JimmyG
2nd Dec 2016 10:59pm
Daft funny joke
by venice
2nd Dec 2016 5:54pm
We dont learn much.
by venice
1st Dec 2016 9:22pm
Freegle
by venice
1st Dec 2016 6:36pm
New Wirral History
Name help
by Paternoster21
08:03 AM
HMT Lancastria
by granny
2nd Dec 2016 11:38pm
Cubitts Holland and Hannen
by fish5133
27th Nov 2016 5:38pm
Fire station
by chris7777
22nd Nov 2016 12:24pm
Buy a house in Greasby for 12s a week - in 1935
by yoller
6th Oct 2016 6:56pm
Forum Tips
Photo Gallery Forums
fireworks on the Mersey last night
Hadlow train station
Topic Replies
Sports Personality Of The Year
by granny
25 minutes 15 seconds ago
Another Big Waste Fire in Liverpool.
by starakita
Today at 06:42 PM
IPhone 4s 16gb 35
by anniebo28
Today at 12:45 PM
Name help
by fish5133
Today at 12:45 AM
Raspberry Pi in the classroom!
by Excoriator
Yesterday at 11:04 PM
live webcam from africa, a must see
by granny
Yesterday at 09:39 PM
Gymnastics coaches needed.
by margy
Yesterday at 09:28 PM
HMT Lancastria
by granny
Yesterday at 02:06 PM
Stanlow Abbey
by Kylix
Yesterday at 02:05 PM
December
M Tu W Th F Sa Su
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
Recent Posts : What's On ?
Wirral TUC Meeting re Update on Wallasey CLP Suspe
by RUDEBOX
30th Nov 2016 9:16pm
World Aids Day Event 2016. Liverpool
by RUDEBOX
30th Nov 2016 9:05pm
Page 1 of 2 1 2 >
Topic Options
Rate This Topic
#181669 - 28th Oct 2007 11:49pm Dump Valves
Petei123 Offline
Smartchild

Registered: 10th May 2007
Posts: 558
Loc: Prenton
my mate has a 306 1.9 td. he is thinkin of gettin a dump valve 4 it. is it worth it or will it just make a pathetic lil puffing noise? also hat are the pros and cons on dump valves?

thanks

Top
AutoWirral : Advertising
Click me for more Information......

WikiWirral Numbers : Between 150 and 200 New Members Every Month. With Over 3,500 unique visits and 35,000 Page Views each day. Average +500 Search Engines Daily and over 1,000,000 Million Page views a Month. Advertising from 20 . Click Me
#181670 - 28th Oct 2007 11:52pm Re: Dump Valves [Re: Petei123]
Mark Offline


Wiki Master

Registered: 9th Nov 2003
Posts: 20958
Loc: Wirral
I don't know if ive heard one on a diesel ?

Sorry i cant help mate, love the description lol
_________________________
My Avatar images are all from the Wirral Gallery.Click Me
Wow Wirral History is coming along Great! Wirral History

we get +200 new members a month now smile

Top
#181671 - 28th Oct 2007 11:52pm Re: Dump Valves [Re: Petei123]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Lol I remember these being discussed in some detail on the 306 forums. I took an interest as I wanted a D Turbo at the time.

They dont do nothing for it to be honest, other then astetically of course.

Has he done a full stage 1 tune up? Id prefer to spend 100 and take it to a specialist to be tuned (you can do it yaself but its best to take to a specialist who can tune it for its best output on a rr) then the couple of hundred on dump valves for little benefit.

Get a 406 intercooler and he could be pushing insane boost lol, some peeps are pushing 140bhp+ from the DTurbo's on there with just a few small mods.

115bhp+ is realistic from just a stage 1.

smile

Top
#181672 - 28th Oct 2007 11:55pm Re: Dump Valves [Re: MattLFC]
Petei123 Offline
Smartchild

Registered: 10th May 2007
Posts: 558
Loc: Prenton
all i know is that he has a straight thru with sorts cat from the manifold, and a BMC air filter thats off the top of my head, but he had it rr'd at 112 bhp

Top
#181673 - 28th Oct 2007 11:57pm Re: Dump Valves [Re: Petei123]
turbo_stu Offline
Smartchild

Registered: 2nd Jan 2006
Posts: 665
Loc: my head
as matty says it more fitted for the noise unless your pushing real power.
_________________________

always looking for those bigger bunches of bananas!

Top
#181674 - 28th Oct 2007 11:57pm Re: Dump Valves [Re: Petei123]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Well usually with a stage 1 tune up alone, 110bhp is rather easy to get, so if he has done it, the other mods cant be doing much, or the tuning isnt as good as it can be.

Whats the price he's lookin to pay for the dump? If he gets a bargain, sure, go for it, but if he's lookin at standard prices, then unless he just wants to waste money, its not worth it imho.

smile

Top
#181680 - 29th Oct 2007 12:00am Re: Dump Valves [Re: MattLFC]
Petei123 Offline
Smartchild

Registered: 10th May 2007
Posts: 558
Loc: Prenton
think on a website it was sayin 260 fully fitted.

i'm lookin at swapin my ZS for a 306 in a few weeks aswel with cash my way and could b interesed in one if they're any good, just c wat my mate says.

do they do anythin 4 fuel consumption i.e lower it?

Top
#181681 - 29th Oct 2007 12:05am Re: Dump Valves [Re: MattLFC]
StuyMac Offline

Wiki Master

Registered: 24th Nov 2003
Posts: 12002
Loc: Wirralshire
Diesels dont run a vacume so one has to be sourced elsewhere. Not sure how the kits have evolved, but initial ones leaked boost, and lost you power, so they where more for the noise.

It will help protect the turbo, but not to the extent they do on a petrol car. As there is no vacume and throttle butterfly on a those older diesel engines, the turbo doesnt stall as violently as it does on a N/A car, so they dont get the same back pressure a petrol car does which is what damages the bearings.

Personally I wouldnt go for it, its trying to make a derv sound like petrol performance, and although it protects the turbo a little, it takes longer to fill boost pipes after its dumped the air and hence less performance.
_________________________


What If There Were No Hypothetical Questions?

Top
#181683 - 29th Oct 2007 12:08am Re: Dump Valves [Re: Petei123]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Nope, they shouldnt affect the fuel consumption much on the D Turbo noticebly iirc. I know a stage 1 tune up only knocks a couple of mpg off the average fuel consumption usually.

Is it an HDi or a DTurbo ya be lookin at? HDi got about an extra 10mpg, but not as "DIYable" as the DTurbo's.

HDi's require a remap, about 180 give or take, but will push about 120bhp when done, DTurbo's can push 110bhp doing a stage 1 yaself, ya can get upto 120 out of it from a specialist, maybe 100 or so.

Both much better value and gain then dump valves lol.

Top
#181684 - 29th Oct 2007 12:08am Re: Dump Valves [Re: StuyMac]
Petei123 Offline
Smartchild

Registered: 10th May 2007
Posts: 558
Loc: Prenton
al show me mate this post 2moro, but its up2 him reli. lol

the 1 i'm lookin in2 gettin is http://www.pistonheads.com/sales/272906.htm

what do u guys think?

Top
#181685 - 29th Oct 2007 12:09am Re: Dump Valves [Re: Petei123]
turbo_stu Offline
Smartchild

Registered: 2nd Jan 2006
Posts: 665
Loc: my head
a dump valve is used to vent excess turbo boost from the intake when you shut the throttle. many manufacturers use their own re-circulating dump vavles to prevent the pst noise from being heard. some people say that the use of a dump valve can prolong the life of a turbo, and that without one the turbo can damage itself, but plenty of people manage without one, for that chatter noise.

it has nothing to do with fuel ecomony, your right foot controls that........
_________________________

always looking for those bigger bunches of bananas!

Top
#181687 - 29th Oct 2007 12:12am Re: Dump Valves [Re: Petei123]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Looks fine that, dont be put off by the mileage, the DTurbo engines will easily run past 200,000, so long as they have been looked after and reguarly services, they are pretty much bullet proof.

If the car is worth it financially, the insurance is dirt cheap on em (as standard their only group 4), and it hasnt been ragged to death, the engine purrs etc, and all seems to be correct, id go for it.

You just got me interested in DTurbo's again grin

Top
#181690 - 29th Oct 2007 12:16am Re: Dump Valves [Re: MattLFC]
Petei123 Offline
Smartchild

Registered: 10th May 2007
Posts: 558
Loc: Prenton
well the lad sellin it has offered me the car and 700 so am gunna take a trip down sometime this week 2 have a look, so hopefully cud have a new car within the next couple of weeks laugh

Top
#181707 - 29th Oct 2007 8:46am Re: Dump Valves [Re: turbo_stu]
StuyMac Offline

Wiki Master

Registered: 24th Nov 2003
Posts: 12002
Loc: Wirralshire
Originally Posted By: turbo_stu
many manufacturers use their own re-circulating dump vavles to prevent the pst noise from being heard.


Recirc dump valves are used so that all measured air stays in the intake system. Say the AFM measures X amount of air, and then a load is dumped to atmosphere, as its after the AFM, the car doesnt know this, and incorrectly over fuels to car - fitting a recirc keeps all the air where the car thinks it is wink
_________________________


What If There Were No Hypothetical Questions?

Top
#181712 - 29th Oct 2007 9:56am Re: Dump Valves [Re: StuyMac]
Mark Offline


Wiki Master

Registered: 9th Nov 2003
Posts: 20958
Loc: Wirral
good stuff lads wink I'm learning loads smile
_________________________
My Avatar images are all from the Wirral Gallery.Click Me
Wow Wirral History is coming along Great! Wirral History

we get +200 new members a month now smile

Top
Page 1 of 2 1 2 >

Moderator:  StuyMac 
Random Wirral Images

Click to View Topic.
Newest Topics
Another Big Waste Fire in Liverpool.
by Wally1
10:24 AM
Gymnastics coaches needed.
by margy
09:28 PM
Name help
by Paternoster21
08:03 AM
HMT Lancastria
by granny
2nd Dec 2016 11:38pm
Wirral Globe
by locomotive
1st Dec 2016 6:25pm
For Sale & Free
IPhone 4s 16gb 35
by anniebo28
12:45 PM
Steam Train Money Box/Ornaments
by Tranquil
1st Dec 2016 11:32am
Childs LFC Bike 5 - 8 Yr old
by Pete_M
1st Dec 2016 1:10am
Cat related Collectables
by Tranquil
29th Nov 2016 4:48pm
original xbox
by vw_kyle
27th Nov 2016 8:17pm
Featured Member
Registered: 17th Oct 2010
Posts: 621
Newest Members
DavidSharpe, Grayo123456, uptonvillage, NobbyHunt, sam1512
12133 Registered Users
Today's Birthdays
No Birthdays
New Wirral Info
Gymnastics coaches needed.
by margy
09:28 PM
Wirral Globe
by locomotive
1st Dec 2016 6:25pm
Wirral TUC Meeting re Update on Wallasey CLP Suspe
by RUDEBOX
30th Nov 2016 9:16pm
World Aids Day Event 2016. Liverpool
by RUDEBOX
30th Nov 2016 9:05pm
A job. Company not named.
by venice
30th Nov 2016 6:30pm
News : New Topics
Another Big Waste Fire in Liverpool.
by Wally1
10:24 AM
Pensby Hotel
by granny
29th Nov 2016 6:39pm
Paul Nuttall Elected UKIP leader
by granny
28th Nov 2016 12:03pm
Disgusting surely not legal creamfields noise !!@
by svenlock68
27th Nov 2016 8:25am
Paying for EU Citizenship (Poll)
by diggingdeeper
26th Nov 2016 12:35pm
New Enthusiast Forums
54 plate renault clio 3rd brake light
by Mike72
1st Dec 2016 12:52pm
Raspberry Pi in the classroom!
by FelixCowden
30th Nov 2016 9:27pm
crop loss & water rationing in Dominican Republic
by FelixCowden
30th Nov 2016 8:46pm
PC Repair needed
by TudorBlue
29th Nov 2016 2:54pm
Sports Personality Of The Year
by fish5133
29th Nov 2016 12:32am
(Views 24hrs)Trending Newest Topics
Another Big Waste Fire in Liverpool. 164
Wirral Sunrise Sunset
Sunrise Sun 8:10am
Sunset Sun 3:54pm
Local Time Sun 10:11pm
WikiWirral Can . . . .