Where did all the Borg Warner EFRs go?
11-17-2011, 07:43 PM
#41
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This is correct, I'm currently learning from the hardcore racers what works and what doesn't to build my own setup as many have before me. I'd guess this is whats also driving begi to make the "mojo" system. There is a big difference between street systems and track systems.
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11-17-2011, 07:47 PM
#42
EFR's are *******.
People still whine about the T25 .64 housings on the EFR, but it's not the same as a Garrett. Same with the wastegates, they are serious business.
Here is a 6758 on a Cobalt using a stock exhaust manifold w/ adapter, stock head, stock intake manifold.
People still whine about the T25 .64 housings on the EFR, but it's not the same as a Garrett. Same with the wastegates, they are serious business.
Here is a 6758 on a Cobalt using a stock exhaust manifold w/ adapter, stock head, stock intake manifold.
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11-17-2011, 08:00 PM
#43
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BEGi has been building turbo kits for Miatas for over a decade. I don't know what the mojo kit will be, but expecting them to suddenly come up with a system that works on the track is a little far-fetched, IMO. If they had that capability, they would have done it a long time ago.
Think about the companies that have produced game-changing parts in the last 5 years. The 6UL has become the gold standard motorsport wheel for Miatas, but 5 years ago it was an idea in Emilio's head. His frustrations from being unable to buy the parts he wanted for his own track car spawned the 8" 6UL, then the 9" 6UL, and now the 10" 6UL. The rigors of regular competitive motorsport provide the kind of environment that quality parts come from.
If you aren't testing your products by bolting them to a race car and beating the snot out of it, you're going to end up with egg on your face when one of your customers goes out and does it (with sub-par results). I know this first-hand - I've spent the better part of 4 years being that customer.
I don't think that difference is as big as people make it out to be. You can certainly get away with using lower-grade components in a street car, but I don't think that's acceptable. The same high-quality parts that will make our kits reliable and fast on the track will provide unparalleled low-end torque, response, and efficiency on the street. Thousands of people take their turbocharged street cars to the track every weekend - there's no reason why you shouldn't be able to purchase a turbo kit for a Miata and do exactly the same thing (assuming the rest of your car is up to the task).
On a side note, TDR still tells people my car is unreliable and I work on it all the time, no matter how many superchargers or belts their cars throw. I recently heard that my turbocharger bent my exhaust valves. Maybe someone will see me drive it to and from the track every time and start putting two and two together.
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11-17-2011, 08:01 PM
#44
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EFR's are *******.
People still whine about the T25 .64 housings on the EFR, but it's not the same as a Garrett. Same with the wastegates, they are serious business.
Here is a 6758 on a Cobalt using a stock exhaust manifold w/ adapter, stock head, stock intake manifold.
People still whine about the T25 .64 housings on the EFR, but it's not the same as a Garrett. Same with the wastegates, they are serious business.
Here is a 6758 on a Cobalt using a stock exhaust manifold w/ adapter, stock head, stock intake manifold.
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11-17-2011, 08:52 PM
#45
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I was given this thread to read, but I have not yet. I don't know what it says but supposedly the EFR came apart after 10 laps. I'll read it once I get the time.
http://forums.evolutionm.net/evo-dyn...yno-graph.html
And as was said earlier, EFR's turbine alloy is Titanium-Aluminum stuff.
http://forums.evolutionm.net/evo-dyn...yno-graph.html
And as was said earlier, EFR's turbine alloy is Titanium-Aluminum stuff.
First motor with the EFR on it made a shitton of power and then the oil pump blew. He towed the car down to Buschur Racing to have them fix it and retune. They completely built a new motor and tuned the car. It spooled slightly slower and made slightly less power. He then took the car out on the track. The first 2 20min sessions went flawlessly. During the 3rd session the turbo died. The shaft bent in the EFR. Geoff at Fullrace hooked him up with his own personal EFR turbo so that he could take the evo back out on the track. The new motors spark plugs melted and engine is dead. David Bushur has said he will rebuild the motor and retune it for free. Car is currently being transported to David. First turbo is still at BW and being inspected.
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11-18-2011, 10:38 AM
#47
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I just talked to a turbo guy about this an aparently they're having a tough time bonding the turbine to the shaft like the Mitsu VITME turbo. He believes the only way to make it work is a one-piece shaft, which I don't understand because I thought it was bolted together. He said it was probably not a good idea to buy one yet unless BW promises a real warranty in writing.
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11-18-2011, 12:34 PM
#50
Where should i read up on these issues people are having? I just talked to Raffi and he said that the few people that had the issues did not break the turbo in correctly. (His version of break in was run at idle till operating engine temp then shut off and let cool till room temperature. Repeat 2 more times.) you would think they would heat treat the turbine in the factory so they would know the strength of their components out the door..
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11-18-2011, 01:07 PM
#51
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You probably won't read about it because the first "batch" was sent to the UK. You also won't hear q company vested in a product talk about flaws or difficulties. It's highly likely that anyone who's testing or developing these is bound by a non-disclosure agreement.
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11-18-2011, 02:10 PM
#52
Alright seriously this sucks. ive got my DP made already for this turbo and if for some reason they would take it back, i have nothing to replace it with. I already have negative feelings toward full race and if for some reason this turbo takes a **** on me after 3 months of using it im going to **** a brick. i paid 1400$ for a turbo that they did all kinds of testing on before they started selling it because i expected it to not fail. otherwise i would have bought a china charger.. any supporting vendors want to weigh in on what i should do? Id like to hear your perspective.
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11-18-2011, 02:27 PM
#53
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Alright seriously this sucks. ive got my DP made already for this turbo and if for some reason they would take it back, i have nothing to replace it with. I already have negative feelings toward full race and if for some reason this turbo takes a **** on me after 3 months of using it im going to **** a brick. i paid 1400$ for a turbo that they did all kinds of testing on before they started selling it because i expected it to not fail. otherwise i would have bought a china charger.. any supporting vendors want to weigh in on what i should do? Id like to hear your perspective.
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11-19-2011, 11:56 PM
#59
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The turbo arrived today. Fullrace even included a black anodized billet aluminum cover to replace the plastic one on the turbo.
Sorry for blurry pics (crappy camera).
Sorry for blurry pics (crappy camera).
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