New Buschur Turbos - br500 and br580

[JayHass]

Originally posted by JET
Yes it does. You must use a slimline fan though. The WG actuator will hit the stock fan. Other than that you have to get a garrett install kit and you are set. I love my turbo, 20 psi by 3700 RPM (BR500).

What wastegate are you using (If internal, any creep issues?), what exhaust do you have and what gear/load do you have on the car for that 20 psi at 3700rpm number. I'm eyeing this turbo hardcore.

Thanks in advance for the info.

 

[TellschAWD]

Originally posted by JayHass


What wastegate are you using (If internal, any creep issues?), what exhaust do you have and what gear/load do you have on the car for that 20 psi at 3700rpm number. I'm eyeing this turbo hardcore.

Thanks in advance for the info.

I just got done installing the PTE 50trim comp with the 69trim exhaust onto a 1G (93). The fit and finish are pretty good. I did have to move the water line to the oil filter housing behind the water pipe, but beside that, no other customization was needed. It is a tight fit, but I had no issues with the motor mount (maybe a 2G thing?) or the radiator fan (I am running a SPAL). The intercooler piping is somewhat tight against the base of the radiator, but definitely fits.

I have an internal gate with the divider removed and I am getting boost creep. I know someone earlier mentioned they are not, but I am for sure. I wanted to set it for 15psi and work from there, but it seemed to creep to 20 right away. The actuator is adjustable, but I do not want to loose any boost response by loosening it anymore. Right now, the setting is set to hold the flapper shut - any looser and I think the flapper would be somewhat open all the time.

I also can confirm the 3700 rpm spool up. I have not driven it enough to comment on the details though (load, gear, etc). First priority is to get the boost under control. I am very close to giving up on internally gated turbos and going external

 

[AWD_ENVY]

I have the SCM44 60Trim with 76 turbine... It's internal gated with devider removed. NO boost creep for me. Do you have a 2G/VP/Tubular 02 housing ? I'm sure that could cause problems if you don't.

I have IndyRaceCore radiator with custome shroud w/ spal fans... I had to trim the shroud, Move the waterline for oilcooler behind the water pipe, and slightly rotate the compressor housing to get it to fit good.

Maybe your ease of fitment was due to the smaller housing . But I definaly have not boost creap.

 

[JET]

It should be a T04E housing on all the PTE turbos for now (they are going to make a T40B soon). Mine is the 50 trim with 76 trim exhaust wheel with internal gate. The 3700 rpm spool up is in 3rd gear. I run a 3" turbo back with O2 eliminator routed back in. I have creep to 20 psi @ 7k, but I have the old style housing. The new style with the divider gone is sitting here (free of charge) waiting to go on next weekend.

 

[JayHass]

Originally posted by JET
It should be a T04E housing on all the PTE turbos for now (they are going to make a T40B soon). Mine is the 50 trim with 76 trim exhaust wheel with internal gate. The 3700 rpm spool up is in 3rd gear. I run a 3" turbo back with O2 eliminator routed back in. I have creep to 20 psi @ 7k, but I have the old style housing. The new style with the divider gone is sitting here (free of charge) waiting to go on next weekend.

Wonderful. Thanks for the information. That's pretty much the combo I want. 76 trim (Assuming Stage-III) turbine wheel, with a 50Trim T04E compressor in a .52 A/R housing. I have a 2.5" 02 eliminator (Hey I got it for free. ) and a 3" back from that.

I'll be "divorcing" the wastegate (dump mod) so I can only guess that will help keep boost creep down and I'll also have to use the divided housing. I'll always have some smurf juice in the tank for the most part so 20psi even is acceptable for me.

Thanks again for the info. For the money, I can't find a better turbo deal than the BR500 IMO.

 

[JET]

You should have no creep with a 2.5" O2 eliminator. I will post up the results when I get the new housing on my car. I am going to try to make it to the track May 10th to see what kind of numbers I can get. It will be pump gas though, so I will see if I can pull a low 12. I won't be launching hard though because I don't have the new tranny back yet.

 

[TellschAWD]

It is a TO4E housing...it is definitly tight, but fits resonably well. I have the Hahn 3" O2 eliminator downpipe so that should not be the issue. AWD_ENVY/JET, what has been the lowest boost you have run? How did you set the actuator? I feel that I can set the actuator to allow for 15lbs, but it will not be a tight fit and boost response will suffer. Have you measured how far the actuator actually actuates? Maybe I have a bad actuator...

 

[AWD_ENVY]

I'm not sure on how low it will go... If I remember correctly, with my EVC off I'm getting 15psi. I never botherd to mess wtih the actuator.

I'm running a Ported 2G 02 housing on an Apexi' N1 downpipe.... so It seems I've got the most rescritive setup here and have no boost creap.
I give PTE a big for their work.

My 60trim hits 20psi around 3700-3800 RPM.... definatly streetable. If I where to do it over again, I would have gotten something bigger..... I wouldn't wanted anything less than what I got.

 

[TellschAWD]

Originally posted by JayHass


76 trim (Assuming Stage-III) turbine wheel, with a 50Trim T04E compressor in a .52 A/R housing.

Just for the archives:

Turbonetics
Stage II = 2.120" Exducer x 2.555" Inducer
Stage III = 2.227" Exducer x 2.555" Inducer
Stage V = 2.437" Exducer x 2.795" Inducer

PTE T31 Style
69 Trim = 2.121" Exducer x 2.559" Inducer
76 Trim = 2.228" Exducer x 2.559" Inducer

PTE SC52 - SC61
76 Trim = 2.437" Exducer x 2.795" Inducer

 

[DSM90AWD]

Wouldn'nt an O2 dump + the new PTE Turbine housing with the "cutout" in the W/G passage = open exhaust all the time

I too am looking at the BR500 and wanted to run a dump.

Originally posted by JayHass
I'll be "divorcing" the wastegate (dump mod) so I can only guess that will help keep boost creep down and I'll also have to use the divided housing.

 

[JET]

Yes it will. You will have a constant exhaust leak. I have a HRC 3" O2 eliminator DP just like TellschAWD. I have the old style which flows better than the newer ones. You could reroute it back in or port an old style housing to leave a minimal wall.

 

[TellschAWD]

Originally posted by JET
Yes it will. You will have a constant exhaust leak. I have a HRC 3" O2 eliminator DP just like TellschAWD. I have the old style which flows better than the newer ones. You could reroute it back in or port an old style housing to leave a minimal wall.

Hey JET - I am curious how low of boost you will be able to hold and how the actuator is set after you install the new housing with the divider removed. Keep me posted.

 

[TellschAWD]

I did some more testing on the turbo last night and found some interesting results. I pulled off the actuator and tested it to see if it was fully opening, and found the following:
1. At 13-15psi the actuator would agitate, but not extend a throw at all
2. At 18-20psi the actuator would extend about 1/4”
3. At 25psi the actuator would extend about 3/8”
4. At 30psi the actuator would extend about 1/2"
5. Finally at 35psi the actuator would fully extend to 3/4"

I don’t know about the actuators you guys have, but to me, this does not seem like a properly working actuator. Have any of you guys tested the actuator? This most definitely seems to be the cause of my boost creep.

Thanks,
Brian

 

[JayHass]

Originally posted by DSM90AWD
Wouldn'nt an O2 dump + the new PTE Turbine housing with the "cutout" in the W/G passage = open exhaust all the time

I too am looking at the BR500 and wanted to run a dump.

Yes. Read the text of mine you quoted again a little closer.

I don’t know about the actuators you guys have, but to me, this does not seem like a properly working actuator.

No that doesn't sound right at all.

 

[JET]

That is very interesting Tellsch. You should give PTE a call and ask them about it. They are very good for customer service. I would think it should open up alot faster than that.

 

[DSM90AWD]

Shouldn't you also factor in the pressure of the exhaust pushing on the back of the WG disk in your analysis?

Originally posted by TellschAWD
I did some more testing on the turbo last night and found some interesting results. I pulled off the actuator and tested it to see if it was fully opening, and found the following:
1. At 13-15psi the actuator would agitate, but not extend a throw at all
2. At 18-20psi the actuator would extend about 1/4”
3. At 25psi the actuator would extend about 3/8”
4. At 30psi the actuator would extend about 1/2"
5. Finally at 35psi the actuator would fully extend to 3/4"

I don’t know about the actuators you guys have, but to me, this does not seem like a properly working actuator. Have any of you guys tested the actuator? This most definitely seems to be the cause of my boost creep.

Thanks,
Brian

 

[TellschAWD]

I know that plays into it, but next to impossible to test in my garage
Also, don’t the manufacturers somewhat account for that when they rate the spring? I don’t know.

Anyways, after talking to PTE they have two different actuators they use, a heavy-duty spring and medium/light duty spring. The actuator I have is the heavy-duty spring and is rated to open ~18lbs (which matches my tests). The medium/light duty model is rated to open at ~12lbs. He also mentioned that the actuators can handle ~8lbs more before the pressure forces the flapper open and the actuator cant hold it shut. So I ordered the lighter spring actuator (80 bucks) for street use and plan on keeping the heavy-duty one for track/C16 use.

I would be sure to specify which one you want while ordering.

 

[JET]

Alright, now I am confused. If they say the light one opens at 12 psi and the heavy one at 18, why is everyone getting 15 psi? I am sure I have the heavy one also.

 

[TellschAWD]

Originally posted by JET
Alright, now I am confused. If they say the light one opens at 12 psi and the heavy one at 18, why is everyone getting 15 psi? I am sure I have the heavy one also.

I think there are a few factors that go into this. Are you running a boost controller? How is the actuator arm adjusted? Do you have full 3" turbo back exhaust? Ported o2 housing?

I am sure there is some level of variance in the actuators themselves as well and maybe their quoted numbers are just estimates varying slightly from car to car. He definitely said they had two different models of actuators though – a heavy spring and light spring.

I will confirm when I get it in a few days.

 

[2gtsifwd]

Alright so you cant run a o2 dump with the pte 50 trim? Also a shop around here installed this turbo with the stock fans in place we went to put in mine today and it will not fit with fans in it. Maybe were doing somethig wrong?
Jimmy

 

[JET]

Read the damn thread before you post!! At the end of page 4 I went through the whole install on it and even at the top of this page is says in a quote that you MUST USE A SLIMLINE FAN!!

 

[2gtsifwd]

I read the damn thread go cry about it. Read my damn post i said a local shop (Tempest racing) just installed this turbo in a 95 gst and kept both stock fans in so it can be done.Wow i wonder why everyone says dsmtuners sucks maybe becuase of people with pms like you. Anwyays I asked how and all they could say is keep working at it
YOu only have one fan in??

 

[UncleBens]

COOL IT BOYS!

Well Jet has a 1g and 2gtsifwd is talking about a 2g so there could be some differences.

 

[bigfoot]

I have never seen a full review on the BR500. Those who have one, could you tell me about boost threshold(onset) and recovery after shifts.
And I understand they are .63 a/r?

 

[aliengotpsi]

Originally posted by rguzik
Anyone have any times or HP numbers yet?

this is my 2nd pte turbo as the first one went out on the dyno at souix falls.

I put on my extremepsi fmic and pte 50 trim turbo went to the track they next day and first run it started out shitty witha 2.0 60-foot and went good after that untill lost all power in 4th gear, i think my fuel pump went out... i couldnt even drive home 35 miles an hour with out the egts going to 1600 ouch...

so i got a 13.1 @ 108.7mph

on the dyno i made 250 hp (took off intake pipe to see a blown up turbo)

Kevin
14b 266.8 hp 13.3
50 trim 250 hp 13.1