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Author Subject: Rotrex Supercharger whining
kevpatel29

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Location: croydon

Registered: 22 Feb 2006

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Post #51
I had a rotrex failure just last month, exactly the same loud whine which slowly got louder and louder, then had no boost at all, I later found out the output shaft had snapped and compressor wheel was no longer spinning correctly but the charger was not seized. I got a replacement from TTS last weekend at a discounted price, but I'm disappointed that it only lasted 6000 mile with normal use, no track days etc

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306 GTi 6 Moonstone™
Team 330mm™
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Posted 23rd Oct 2013 at 18:58
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pugheaven

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Location: Fareham

Registered: 17 Dec 2006

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Post #52
Did they tell you what had caused the shaft to snap, iirc someone else's shaft snapped too!
Posted 23rd Oct 2013 at 19:04
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #53
They are definitely an 80mm diameter pulley. Yes

As for failing, I still stand by the fact they need to be warmed up very gently and let rest after use before switching off. Yes

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 23rd Oct 2013 at 19:06
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pugheaven

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Post #54
^agreed, both the high boosts I owned had done 10k miles low/high boost and not a single issue
Posted 23rd Oct 2013 at 19:09
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kevpatel29

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Location: croydon

Registered: 22 Feb 2006

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Post #55
Nope they said they will get back to me, i did take the compressor housing off to have a look, this was the result Clicky=Clicky

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306 GTi 6 Moonstone™
Team 330mm™
Team Supercharged™


RIP CHINA X213 OBD
Posted 23rd Oct 2013 at 19:19
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kevpatel29

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Location: croydon

Registered: 22 Feb 2006

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Post #56
Ive always warmed the car up before use

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Team 330mm™
Team Supercharged™


RIP CHINA X213 OBD
Posted 23rd Oct 2013 at 19:23
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mechanical_repairs

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Location: leicester

Registered: 10 Jan 2005

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Post #57
pugheaven wrote:
Did they tell you what had caused the shaft to snap, iirc someone else's shaft snapped too!


That's what happened to one of my customers units, he is an older chap in his 60s but on his way back from Belgium it let go.

His had done circa 25k

Carl

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Posted 23rd Oct 2013 at 19:23
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #58
Hmm

That doesn't look too healthy Kev. No

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 23rd Oct 2013 at 19:24
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kevpatel29

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Post #59
I think the oil needed changing as it was basically black when i drained it

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Team Supercharged™


RIP CHINA X213 OBD
Posted 23rd Oct 2013 at 19:29
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #60
How many miles/how long had the oil been in there? Dunno

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 23rd Oct 2013 at 19:37
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kevpatel29

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Post #61
One thing i noticed fitting the new charger, the min and max oil level on the dip sticks are different, the darker one is in the new kit

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306 GTi 6 Moonstone™
Team 330mm™
Team Supercharged™


RIP CHINA X213 OBD
Posted 23rd Oct 2013 at 19:38
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kevpatel29

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Post #62
It had only covered 6000 mile over 21 months

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Team 330mm™
Team Supercharged™


RIP CHINA X213 OBD
Posted 23rd Oct 2013 at 19:40
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doof

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Location: nottingham

Registered: 24 Nov 2007

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Post #63
This is making me worry about buying a new one again! That looks shocking, Kev. I'd urge you to email Rotrex direct if you haven't already because they need to know about this and should really be giving answers. I received and email back from them today but need a serial number from the charger for them to look into it. I think we want to get temperature sensors installed ASAP.

Another thing that concerns me is impeller speeds. The C30-94 is rated for 100,000 rpm. Based on a rev limit of 7500 on the engine:

127mm crank pulley / 85 mm charger pulley gives 106,000rpm
127mm crank pulley / 80 mm charger pulley gives 113,000rpm

Worrying?
Posted 23rd Oct 2013 at 20:00
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fordygti

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Location: Walpole St Andrew

Registered: 07 Dec 2009

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Post #64
One style of the dip sticks is the wrong measurements, mine was overfilled but the stick said it was fine, I did ask rick about it.

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98 onyx black 306 Rallye
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58 black Volvo c30 sport
Posted 23rd Oct 2013 at 20:32
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pugheaven

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Registered: 17 Dec 2006

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Post #65
I mentioned on a different thread that rotrex changed the min and max levels and this is shown on the pdf file, they lowered the levels due to lots of people getting fluid spilling out of the top, in reality over filling wouldn't have caused any issues
Posted 23rd Oct 2013 at 22:04
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kevpatel29

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Registered: 22 Feb 2006

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Post #66
I sent an email to Rotrex Direct but got no reply, so got in touch with Lynx, and facebooked TTS who sorted me out with a replacement, Richard @TTS did say they have seen a few similar failures,

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Team 330mm™
Team Supercharged™


RIP CHINA X213 OBD
Posted 23rd Oct 2013 at 22:31
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jamiek_uk2000

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Post #67
When you say sorted you out how much did you end up paying for the replacement charger if you don't mind me asking

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Posted 23rd Oct 2013 at 22:36
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stan_306gti6 Forum Admin

Location: Kent

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Post #68
Good question Jamie - I can't see them allowing a huge discount as they wouldn't make any money, especially as the unit isn't under warranty.

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 23rd Oct 2013 at 22:46
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stan_306gti6 Forum Admin

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Post #69
Also to clarify - the oil cooler for the C38 series is the same size as the one for the C30 series, they're identical. Yes

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 23rd Oct 2013 at 22:53
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jamiek_uk2000

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Post #70
How would anyone go about fitting a fan to it, the dimensions don't really suit it do they? They would end up being something like you get on a PC

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306 GTi 6 Diablo - Being resurrected! Project Thread

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Posted 23rd Oct 2013 at 22:57
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jamiek_uk2000

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Post #71
Also there is the risk of overcooler then and the oil too cool. It would need a temp sensor to kick the fans in

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306 GTi 6 Diablo - Being resurrected! Project Thread

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Posted 23rd Oct 2013 at 22:58
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stan_306gti6 Forum Admin

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Registered: 18 Jan 2004

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Post #72
Yeah, it would only ever be any good in traffic and then at those times the oil isn't being worked hard anyway.

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 23rd Oct 2013 at 22:59
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jamiek_uk2000

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Post #73
Yeah that's a point, the only time it will be boiling is if you are gunning it, which means there is plenty of air going past the radiator. Is there is a thermostat in the charger to regulate oil flow then?

________________________________________

205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"
Posted 23rd Oct 2013 at 23:03
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pugheaven

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Registered: 17 Dec 2006

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Post #74
You can buy small fans too...
If we found out the min temp and had an oil temp gauge installed you could just have the fan on a switch! I would imagine that mine got a bit hot on the track day I did the other weekend!

Certainly something to look into before I fit it all to the dimma :-)
Posted 23rd Oct 2013 at 23:06
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jamiek_uk2000

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Post #75
I didn't think that you could get them that small, just checked Spal. 75 quid for 1 x 4" one and your going to need two for the area. Plus wiring and sensor your talking £200. But then it's cheaper than a new charger. Someone fit a stat to their charger so we can see what's going on here!

________________________________________

205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"
Posted 23rd Oct 2013 at 23:21
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