ballsdeep Posted July 11, 2013 Share Posted July 11, 2013 looks like I'm another victim to the cheap copy wastegate's leaking, suppose I get what I paid for! Iv just picked my car up from the mappers, it made a not so impressive 260bhp at 3psi So what I'm wondering Is if its worth opening up the wastegate to polish and try and seat it better?? If so whats the best way? Link to comment Share on other sites More sharing options...
mclarenross Posted July 11, 2013 Share Posted July 11, 2013 3psi... isn't that really low pressure...? you should be running it at 14 or 15 psi... Link to comment Share on other sites More sharing options...
Josh42 Posted July 11, 2013 Share Posted July 11, 2013 Not necessarily, depends whether your running high compression or not. I know of a few stock NA compression (10:1) NA-T's running 375bhp+ @ circa 6 PSI 14 PSI on high compression would not be too clever I don't think... Link to comment Share on other sites More sharing options...
berg Posted July 11, 2013 Share Posted July 11, 2013 Ouch just bought one for my build aswell lol Link to comment Share on other sites More sharing options...
ballsdeep Posted July 11, 2013 Author Share Posted July 11, 2013 Sorry guys i should of been more clear! I'm running na-t on stock compression! On a plus side I just drove the car for the first time and for 260bhp it still put a huge smile on my face!! Link to comment Share on other sites More sharing options...
ballsdeep Posted July 11, 2013 Author Share Posted July 11, 2013 Ouch just bought one for my build aswell lol You may be one of the lucky ones? but If your still planning on using it maybe its worth pressure testing it first? Link to comment Share on other sites More sharing options...
Nic Posted July 11, 2013 Share Posted July 11, 2013 (edited) Is if its worth opening up the wastegate to polish and try and seat it better?? If so whats the best way? Throw it in the bin and start again, better to buy quality brand 2nd hand, rather than risk your engine with some cheap Ebay crap that's obviously not fit for purpose. Edited July 11, 2013 by Nic (see edit history) Link to comment Share on other sites More sharing options...
Chris Bailey Posted July 11, 2013 Share Posted July 11, 2013 Throw it in the bin and start again, better to buy quality brand 2nd hand, rather than risk you engine with some cheap Ebay crap that's obviously not fit for purpose. This. Link to comment Share on other sites More sharing options...
Swampy442 Posted July 11, 2013 Share Posted July 11, 2013 When will people learn, buy cheap, buy twice... Link to comment Share on other sites More sharing options...
Fly Posted July 11, 2013 Share Posted July 11, 2013 260 well that's 10 more than I got!! They do seen hit and miss. Glad she makes you smile though!! Link to comment Share on other sites More sharing options...
ballsdeep Posted July 11, 2013 Author Share Posted July 11, 2013 Ok this wastegate will be picking a window!!! lesson learned. Link to comment Share on other sites More sharing options...
Slutters Posted July 11, 2013 Share Posted July 11, 2013 Throw it in the bin and start again, better to buy quality brand 2nd hand, rather than risk your engine with some cheap Ebay crap that's obviously not fit for purpose. That's why you set a boost limit on the ECU.... Link to comment Share on other sites More sharing options...
Tsia Posted July 12, 2013 Share Posted July 12, 2013 This is for NA-T though - I wasn't aware that piggybacks had a boost limit function? Can't say I know too much about them though Link to comment Share on other sites More sharing options...
Noz Posted July 12, 2013 Share Posted July 12, 2013 Not necessarily, depends whether your running high compression or not. I know of a few stock NA compression (10:1) NA-T's running 375bhp+ @ circa 6 PSI 14 PSI on high compression would not be too clever I don't think... I go above 14psi quite often Ok this wastegate will be picking a window!!! lesson learned. Where did you buy your wastegate from mate? The XS power ones seems to run fine. I've never had an issue and have only heard of eBay copies being known for higher failures. That said, get yourself a decent vband one. The HKS copies can't flow a huge amount anyway which also causes more problems. Link to comment Share on other sites More sharing options...
ballsdeep Posted July 12, 2013 Author Share Posted July 12, 2013 Dare I say it... eBay! Secretly I'm a fan eBay makes me tingle Is that what you have noz xs v-band? Link to comment Share on other sites More sharing options...
Pulley Posted July 12, 2013 Share Posted July 12, 2013 I'm running a 60mm v band HKS copy with great results Works very well Are you using a boost controller to drive the waste gate, or are you running a really soft 3 psi spring? At very low spring strength settings using the waste gate linked directly to manifold pressure means thevalve can be very easily pushed open and bypass by exhaust gases even before 3psi boost has been reached Personally 7 psi is where I'd start at And a boost controller Link to comment Share on other sites More sharing options...
ballsdeep Posted July 12, 2013 Author Share Posted July 12, 2013 Is that the gt II style I'm using the AEM tru boost gauge / controller, and the wastegate spring should be 7.2 psi but I never checked this before I fitted it! Is there anything else that would prevent it from building boost? Link to comment Share on other sites More sharing options...
Pulley Posted July 12, 2013 Share Posted July 12, 2013 Yep that's the style I use Check the spring, possibly go stronger If the valve moves freely and there's no air leaks past the diaphragm then the spring is just too weak Link to comment Share on other sites More sharing options...
Noz Posted July 13, 2013 Share Posted July 13, 2013 I'm using a 4 bolt XS wastegate. Great for stock na-t but your need bigger down the road (trust me on that) Link to comment Share on other sites More sharing options...
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