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Performance Volvo Cars A forum for those interested in any Volvo performance car from any era, FWD, RWD and AWD! |
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Turbo T28Views : 7462 Replies : 98Users Viewing This Thread : |
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Jan 27th, 2007, 00:03 | #91 |
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(although, to be fair, they did give me my money back...)
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Alastair No current Volvo |
Jan 27th, 2007, 00:15 | #92 |
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Last Online: Mar 26th, 2024 18:38
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That's interesting. The 'ultimate internal wastegate' which we got for Ryan's car was a really neat design (and it seriously works!), but to be fair, the finish/fabrication was a bit amateur on it.
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Jan 29th, 2007, 21:40 | #93 | |
diy bhp
Last Online: Apr 7th, 2011 20:38
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Location: great yarmouth
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cheers for enlightening me. my very limited knowledge is slowly growing. edit.. while im at it, is impeller chatter due to a malfunctioning recirc valve on a T5 bad news then and will wear the turbo shaft/bearings prematurely ? wayne
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auto 96 T5 tweaked n ratted Last edited by bb54; Jan 29th, 2007 at 21:43. |
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Jan 29th, 2007, 22:34 | #94 | |
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Hi Wayne, If the re-circ valve is staying closed when accelerator is depressed, or if the recirc is of diaphram type and has a hole in it, then yes, you'd likely get the noise. I've never known it cause any problems to the turbo's, however weary when it comes to the GT range of Garrett turbo's because the core is narrower, and even though i am not a fan of dump valves, the recommendation would be to fit a dump valve.
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Regards Mike 100% Humour guaranteed or your webspace back! www.mtek-performance.co.uk |
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Jan 29th, 2007, 23:14 | #95 |
diy bhp
Last Online: Apr 7th, 2011 20:38
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cheers mikey, just pressed the thanks button,its dissapeared and its not shown any thanks ???
it was just a information gathering question really as my phase 1 T5 with a 15g had the chattering noise and when i transfered the turbo/cat (after mashing the internals out of the cat) onto my phase 2 T5 it became apparent that the chatter was down to a recirc valve split diaphram ,as you mentioned, and i was just curious as to weather or not i was running my phase 2 around with a partially damaged p1 turbo. many thanks,wayne
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auto 96 T5 tweaked n ratted |
Jan 29th, 2007, 23:45 | #96 | |
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Hi Wayne,
The Thanks is now showing, thanks lol. I used to run a T3.48 at 1bar and a T34.48 at 20psi on a cosworth with no dump valve, and my brother ran a T04B at 30psi without a dump valve, all were and still are fine with their new owners Mike Quote:
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Jan 30th, 2007, 00:05 | #97 |
diy bhp
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good man.
thanks all. wayne
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auto 96 T5 tweaked n ratted |
Feb 3rd, 2007, 01:00 | #98 |
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Had an early 850 t5 with just a T28 down at swautos today for a custom map, wont go into to many details but finshed with for the time being a strong 290bhp @ the flywheel and ~330 ft/lb's @ 1.1 bar.
good spool up, and able to produce high flow rates (hold boost). would definately consider as a replacement for the TD04 turbos. The owner may make the 7 hour return trip for some more tuning but tbh i think he was more than happy enough with it, especially as it only showed 200 bhp when it arived due to poor setup.
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Feb 3rd, 2007, 19:27 | #99 | |
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