VF35 ACTUATOR?
09 July 2010, 12:35 PM
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VF35 ACTUATOR?
hi there, can any VF35 owners tell me if any companies make an adjustable actuator for the turbo? i have already phoned Forge Motorsport and they say they don't, I'm at a bit of a loss with this one so any help would be great. Thanks,
Jamie.
Jamie.
09 July 2010, 01:53 PM
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Forge dont make one for the VF35, but do for the VF34 and I have been reliably informed that it is the same fitment. I hope it is, as I am having my VF35 wastegate ported and need the uprated actuator now. Look on ebay, £124 plus £8 p and p.
09 July 2010, 08:39 PM
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Nice one guys, thanks very much. Myles whats the benafit of porting the wastegate? i thought you only needed to do that if you had the cat removed? i'm asking because I'm getting a simtek shortly and need to sort out all the little details before then lol.
09 July 2010, 08:45 PM
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Boost creep can be an issue, Im told. When you port the wastegate you can get some wastegate 'creep' so you require an uprated actuator to hold it back.
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09 July 2010, 08:54 PM
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Funnily enough, its not on yet! I have been spotting bargains on this site and others and picking it up slowtime aiming for 330-340bhp. I now have all the parts, and my mate has ported the wastegate and the headers (bought for £15 with an up-pipe!). I just require the actuator and to make a date with Dynamix!
09 July 2010, 09:01 PM
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Sounds good, i've been staring at mine for a few months now lol, doing everything slowtime to. I'm not to sure what to expect from the vf35 but alot of people tell me i won't stop smiling for months 
09 July 2010, 09:17 PM
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defo, i love hearing what othere folk are doin to thier scoobies as this is my 1st one (and hopefully my only one) so i'm still very new to it all. i was a VAG lover before the impreza. i've got quite a few extras going on with it, it's been a bit of a makeover/restoration project. its taken me quite a while to do not very much so far lol
10 July 2010, 12:25 PM
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Ah thats not so bad at all. Sorry for all the questions but what are the benefits of the 3 port? is it greater controle over the turbo's behaviour or am i way off the mark lol?
10 July 2010, 02:12 PM
#23
What Duncan's saying is rather than getting a new WG act/spring etc, instead replace/remap a replacement OEM 3-port BCS (from the early MY93-96 cars) -- c.£30 2nd hand off eBay (normally always a few available...)
Last edited by joz8968; 10 July 2010 at 02:14 PM.
10 July 2010, 02:30 PM
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Sorry to jump in on this, Duncan, will a three port stop the boost creep, and negate the requirement for the uprated actuator? If so you may save me £80!
10 July 2010, 03:47 PM
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its not the actual pic but its exactally the same...
Last edited by jamiesti; 10 July 2010 at 03:48 PM.
11 July 2010, 04:01 PM
#27
A three port (new, £65 including fittings) allows for more precise boost control. It does not put under control or assist with boost creep per se.
Boost creep is exactly as the name suggests and is caused by exhaust gases not being able to exit the wastegate appeture quickly enough and thus backing up during wide throttle angles. Some turbos are more prone to boost creep than others when used beyond the intended design power band. One cure is to port the W.G appeture and if you are going to do that you may as well port the exhaust turbo inlet at the same time.
Fitting the right actator is important but if you start swapping actuators or playing with adjustable boost actuator settings then, to put the boost under optimal contol, you may need to remap the boost control WG DCs in the ECU or via the AVC-R or similar if you are using that method.
Boost creep is exactly as the name suggests and is caused by exhaust gases not being able to exit the wastegate appeture quickly enough and thus backing up during wide throttle angles. Some turbos are more prone to boost creep than others when used beyond the intended design power band. One cure is to port the W.G appeture and if you are going to do that you may as well port the exhaust turbo inlet at the same time.
Fitting the right actator is important but if you start swapping actuators or playing with adjustable boost actuator settings then, to put the boost under optimal contol, you may need to remap the boost control WG DCs in the ECU or via the AVC-R or similar if you are using that method.
11 July 2010, 04:13 PM
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Cheers Harvey, so porting the wastegate aperture will help with boost creep, but will the stock actuator then not be man enough for the job, in theory?
12 July 2010, 08:22 AM
#30
I think Duncan is right. Unless there is an issue with your actuator and it is not performing properly because it is defective then changing it will make little difference.
Is it possible that the VF35 and VF34 actuators are the same?
I have new uprated actuators here but it is not a matter of sticking one in the post to you. You may have to be prepared to make a completely new bracket to get the actuator in the right position and you then need to be able to make adjustments to the actuator to set it up properly.
Is it possible that the VF35 and VF34 actuators are the same?
I have new uprated actuators here but it is not a matter of sticking one in the post to you. You may have to be prepared to make a completely new bracket to get the actuator in the right position and you then need to be able to make adjustments to the actuator to set it up properly.