Garratt's new GTX range turbos
04-02-2011, 04:55 PM
#121
PassionFord Post Whore!!
Its good to see the HUGE power Mark and others are making using these modern GT turbos but it does seem that they are just being pushed way too hard causing reliability issues.
Are they just generally weak or is it the massive boost pressure thats just finishing them off so quick ?
Are they just generally weak or is it the massive boost pressure thats just finishing them off so quick ?
Mark
04-02-2011, 05:03 PM
#122
Hi James.
Yep, looks that way. I stripped everything down for Mark to check the cam timing and all was good. Put it all back together, Mark had started to adjust the cold running map when we started to hear a little squeal in the area of the turbo. Took the air filter hose off and found very slight marks on the compressor housing where the blades had began to touch. The noise just got progressively worse. By the time I crawled back to Bristol it sounded like a cats chorus, properly fucked
It had driven fine on the way to Marks in the morning, gave it some serious stick as well.
Oh well.....
Cheers,
Ade.
Yep, looks that way. I stripped everything down for Mark to check the cam timing and all was good. Put it all back together, Mark had started to adjust the cold running map when we started to hear a little squeal in the area of the turbo. Took the air filter hose off and found very slight marks on the compressor housing where the blades had began to touch. The noise just got progressively worse. By the time I crawled back to Bristol it sounded like a cats chorus, properly fucked
It had driven fine on the way to Marks in the morning, gave it some serious stick as well.Oh well.....
Cheers,
Ade.
Sorry to hear that mate, but at least you were getting a new turbo anyway, just nice to sell the bits on to re-coup some money!
Just think of the smile you'll have after giving it some serious stick with the new turbo
04-02-2011, 05:07 PM
#123
10K+ Poster!!
Thats fair enough then, can't deny the power you get and I've probably just got caught up in the internet gossip about them being terribly unreliable.
04-02-2011, 06:30 PM
#125
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Cheers,
Ade.
Last edited by MAD Ade; 04-02-2011 at 06:33 PM. Reason: my poor spelling on occasion
04-02-2011, 06:33 PM
#126
PassionFord Post Whore!!
i have a gt2871 on my zetec running around 400hp been on there 2 1/2 years and done over 25k so imo there not weak! and my engine has had a very hard time
05-02-2011, 10:39 PM
#127
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Been on the car since October 2005, done at least 10,000 miles, gone from internal to external wastegate, changed after four years from open to twin scroll exhaust housing, had launch/anti-lag chucked at it and properly abused, I think it's done remarkably well under the circumstances
Cheers,
Ade.
Cheers,
Ade.
glad you made it home ok without the turbo properly shitting itself though
06-02-2011, 04:19 PM
#128
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looking forward to it's reincarnation - should be 200 on it's next top speed run
Cheers,
Ade.
08-02-2011, 09:36 PM
#132
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It took me two and a half hours to get back to Bristol, I was being over taken by trucks, cunts with caravans, all sorts
most thought I was taking the piss, 'powered by....' all over the back of the car lolCheers,
Ade
08-02-2011, 10:17 PM
#133
cossie fan (unluckerly)
22-03-2011, 05:54 PM
#144
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norris built a gtx4294(so smaller one) powered evo lump for wallace performance.
Makes some interesting numbers with a little boost spike at the end at 3bar
going of that and compressor maps a gtx4202 would make roughly 160hp more at 3bar of boost so 1180bhp!!
ethanol is lovely stuff!!
Makes some interesting numbers with a little boost spike at the end at 3bar
going of that and compressor maps a gtx4202 would make roughly 160hp more at 3bar of boost so 1180bhp!!
ethanol is lovely stuff!!
13-04-2011, 03:46 PM
#156
Happily retired
Marks had a GTX 3071 on the RR today he has also tested a Borg 200sx that picked up a chunk of horses & torque 
. Must admit i cant wait to have a Borg on mine.
. Must admit i cant wait to have a Borg on mine.
13-04-2011, 03:56 PM
#158
Happily retired
Its the aim to have two MAD cars past 200mph on the same day
it depends on shape of curve & fall off after peak Power in Ades case could be tight . Im sure the MAD crew can get the gearing correct to give him the best chance. COME ON ADE !!!!!!!!!!!!!!!!!!!!!!!!
13-04-2011, 04:01 PM
#159
Happily retired
