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VF35 - Boost creep

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Old Jun 11, 2013 | 08:50 PM
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Default VF35 - Boost creep

i have a VF35 on a forged saxo engined AX and its got massive boost creep since the engine is now breathing better.

Can it be cured completely or will i need to weld up the internal WG and use an external one. problem is i havent really got the space so i want to look at other options to cure this issue.

Creep is spiking from 7psi to 14psi so we stopped mapping there. Power was 272bhp.

quick pic for ****** sake:

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Old Jun 11, 2013 | 09:00 PM
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You need it ported (not sure which side). Do a search on here for more info.
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Old Jun 11, 2013 | 09:02 PM
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Exhaust side iirc
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Old Jun 11, 2013 | 09:03 PM
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Yeah, under the penny!
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Old Jun 11, 2013 | 09:51 PM
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Thanks for replies. I'm currently overseas, but the car is with a friend of mine who's doing the work. Can I send the exhaust housing to anyone to get it done properly?
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Old Jun 11, 2013 | 10:33 PM
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In an AX?!? Thatd be fookin mental!!!
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Old Jun 11, 2013 | 10:38 PM
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under that flapper and maybe a uprated actuator i got one for mine from a rated ebay seller.
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Old Jun 11, 2013 | 11:03 PM
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just port it around the wastegate door to smooth the flow entering the waste gate and the fit a forge actuator and that will sort your problem ,p.s. that ax must be insane they are so light and with that power!!!!!!!
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Old Jun 12, 2013 | 06:54 AM
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Thanks folks, will do that - much appreciated.

I found some pics with it done so looks like an easy enough job. Just smooth the exit into the port and widen it.

http://forums.sidc.co.uk/topic/13103...f35-wastegate/

What spring rate are people using in the actuator?

Last edited by e8_pack; Jun 12, 2013 at 06:55 AM.
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Old Jun 12, 2013 | 07:33 AM
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Originally Posted by Gambit
In an AX?!? Thatd be fookin mental!!!
Aye, it's pretty rapid. Fully caged, 4 pot brakes, quaife diff, BE box, coilovers. They handle identical to a 106 as it has the same floorplan and running gear, though a bit lighter - should be around 750-800kg, it's fully stripped but obviously the extra components add a bit of weight, though there is still plenty more weight to come out.

My friends running 357bhp but it's more for drag. Mine is built for track, though i'll probably refit the TD04 for track work as it was much more responsive, but i'm just trying out the VF35 for a bit as i have a trip to the ring so it makes for a more interesting drive. It's road worthy but you can't live with it - occasional use only!
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