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Messages - Boostjunkies

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16
General Chat / Parts we sell :)
« on: 13:42, Wed 09 February 2011 »
Hi All,
Just thought I would give you a heads up of what parts we can offer :)

SFS hose kits, Joiners,
Vacuum hosing in 8 colours 4 sizes 3mm/5mm/8mm/10mm
Vacuum hose joiners, T pieces, L pieces,
Sytec Motor sport parts:
from fuel pumps to bleed valves, fpr's, fuel filters / unions etc
Dump valves and fitting kits,
Powerflex Bushes
Superpro Bushes
Mikalor Hose Clamps and worm drives all stainless
Spax Suspension
Braided Fuel lines and Hose fittings/Anodised Finishers
Coloured cable ties etc,
And you guys get discounts :

thanks for looking
Matt

17
Renault 5 GT Turbo / Re: Any difference on dump valves?
« on: 11:50, Tue 08 February 2011 »
I ran all last year with out a dump valve, but I have a a Garrett steel core and 360 deg bearing on the skyline,  it is slightly more laggy but the noise is funny,
I have returned to a twin piston again though as we're using it more on track this year and want to keep the turbo healthy at the higher boost levels :)

18
General Chat / Re: Old school
« on: 23:32, Sun 06 February 2011 »
Same with all business really bud they move on to other newer models/makes,
go bust or sell up, just the big boys left GTtuning etc on the 5's really but they have moved onto the cleo's and other new turbo'd renaults,
Brodie Britttain Racing is still at Brackley, Northampton but don't advertise much about the R5 gtt tuning,  but still have a good knowledge,

19
Renault 5 GT Turbo / Re: Any difference on dump valves?
« on: 23:25, Sun 06 February 2011 »
Yes mate it will be fine,
you could use any of them on the 5's but the twin may not dump very much,
the single piston will take be more reliable in the long run

20
Renault 5 GT Turbo / Re: Any difference on dump valves?
« on: 16:42, Sat 05 February 2011 »
Basically they are broken down into 4 types,

Diaphragm, this has a nomex or rubber (depending on quality) diaphragm in it, Mostly used on cars without an AFM or metering unit, Ie renault 5, Sierra Cosworth, but they can be unreliable, splitting and are used more where the inlet temps are high ie pre intercooler.

single piston, this has a single piston mostly used for cars without an AFM or metering unit and the inlet temps are low (post intercooler) and are more generally more reliable than the Diaphragm type.

Twin Piston, this has a secondary piston that closes behind the first to stop stalling and running problems on AFM and cars with a metering unit ie RS turbo MFI, (basically the engine runs briefly rich with each operation of the std single piston causing running hesitation or stalling)

and Then there are variants that have the charge released back into the inlet just before the inlet
These are re-circulating Dump valves. (diverter valves)

There are also some that allow a part of the charge to escape and the rest is re-circulated usually with an adjustment screw to change the spring tension and the amount that goes back in,
These are mainly used on cars that have MAF's and AFM's, and again have stalling problems with Atmospheric dump valves in general.

finally there are dump valves for the specifically VAG cars and other Diesels that have an electronic control on the top, too stop Stalling and poor running issues as the Turbo's either are variable vain and ecu controlled or have a sensor for boost pressure in the turbo housing.

That's my understanding of them anyhoo.

21
General Chat / Re: how old are we all???????
« on: 18:54, Thu 03 February 2011 »
feckers lol,  :lol:

22
General Chat / Re: how old are we all???????
« on: 23:17, Wed 02 February 2011 »
Ahh feck I'm the oldest @ 37  :cry:

23
General Chat / Re: Turbo Garrett GT2854R
« on: 01:04, Fri 28 January 2011 »
Well the larger GT2860R Disco Potato has been used for the R5's a few times so it should be fine

24
Renault 5 GT Turbo / Re: system of detection pinging/detonation !
« on: 00:31, Mon 17 January 2011 »
I think your refering to knocklink
http://www.turbomagazine.com/tech/0703_ ... to_02.html

25
Newbies / Re: Hi All :)
« on: 12:21, Thu 13 January 2011 »
my rear upper covers arrived today so the rear can go back together :)

26
Newbies / Re: hi all
« on: 00:34, Fri 24 December 2010 »
Hi Dave Welcome,
put a post in events mate :)

27
Renault 5 GT Turbo / Re: Engine management choices?
« on: 00:32, Fri 24 December 2010 »
might be worth swapping over to luminition optronic in the dizzy too, I'm sure these are still points ignition?
if your going to the trouble of changing management, it's a good fix, I ran it on my fiesta supersport and it was faultless :)
worth a though

28
Renault 5 GT Turbo / Re: detonation?
« on: 01:24, Thu 23 December 2010 »
well there's little left to adjust on the actuator so I recommend a -31 from a cosworth, should be about 14 psi on std pre tension,
I would then get the ignition timing and fuelling set up spot on with a wide band and an oil cooler wouldn't go a miss, the rest is there it goes well  enough :)

29
Renault 5 GT Turbo / Re: detonation?
« on: 17:21, Wed 22 December 2010 »
lol stop adjusting it  :D  and come up and get the decent dumpvalve :)
you nutter!!!  :mrgreen:

30
Renault 5 GT Turbo / Re: Engine management choices?
« on: 12:43, Wed 22 December 2010 »
you could go Megajolt ( non inj control version of Megasquirt) which is mappable,
Ideally you could go the full Injection which would open up many options and allow full map-ability
it really depends on funds and what you want for it in the end :)
It's a similar question every xr2 turbotechnics owner went through,
Carb to mfi or carb to efi etc same issues and problems, costs etc

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