Bullseye Stage 3 Housing:looking Inside After Almost A Year!

[joeracer321]

Mark, I found the specs to your turbo (HX-35/40). Here they are;

Compressor
2.362 inducer
3.328 exducer

Turbine
2.753 inducer
2.364 exducer

I'm sorry I didn't have them earlier, but we haven't made any of that combination in a while so it took me a while to research which wheels were installed in that turbo. Anyhow I hope that information helps.

 

[DSM90AWD]

Here's a pic of a 7cm next to a Bullseye. Granted, the 8cm is slightly larger, but it's still a non-symmetrical volute design. The Bullseye is a symmetrical volute with a more Garrett-style scroll design. If you put a Red in a Bullseye housing that's made for a TD06H wheel, I'd bet it would gain some power.

http://homepage.mac.com/stevestrzem...ctures/2003-04-27 19.02.05 -0700/IMG_0227.JPG

This is a pic of a dissected Bullseye housing compared to a mitsu 7cm (granted it they are opposite sides, but shows the similarity in size) :

You must be logged in to view this image or video.

 

[sweet97]

Mark, I found the specs to your turbo (HX-35/40). Here they are;

Compressor
2.362 inducer
3.328 exducer

Turbine
2.753 inducer
2.364 exducer

I'm sorry I didn't have them earlier, but we haven't made any of that combination in a while so it took me a while to research which wheels were installed in that turbo. Anyhow I hope that information helps.

Thanks. 73 trim. What size Garret wheel is it close to, anyone? Mark

 

[90AWDTalon]

Thanks. 73 trim. What size Garret wheel is it close to, anyone? Mark

Don't know about Garret but its close to mitsu tdo6h
exducer 2.315
inducer 2.650

 

[joeracer321]

Thanks. 73 trim. What size Garret wheel is it close to, anyone? Mark

Well the only thing that comes close as far as flow goes is the T-66 which is a Turbonetics turbo; it flows 72 Lbs/Min. The next closest off of the top of my head is a GT-40R which does 70 Lbs/min. Trim is basically irrelavent since it refers to a ratio, not size (FYI).

 

[90AWDTalon]

This is a pic of a dissected Bullseye housing compared to a mitsu 7cm (granted it they are opposite sides, but shows the similarity in size) :

You must be logged in to view this image or video.

It would be nice to see that pic with a ruler on each housing.

 

[DSM90AWD]

Thanks. 73 trim. What size Garret wheel is it close to, anyone? Mark

The Garrett Stg5 exhaust wheel (T350) is 2.795 / 2.437 (76trim) which is slightly smaller than the HX listed above.

Not that wheel size in absolute terms is an indication of flow rate (Garrett GT Wheels are smaller but flow more)

 

[DSM90AWD]

It would be nice to see that pic with a ruler on each housing.

I'm sure one could be doctored up in photoshop using the known inlet flange size of the 16G (and BEH) as a reference point.

Still think a better gauge would be to run backpressure check on one of these to see if all the variables: A/R, voulte shape, wheel size..etc produces acceptable numbers througout the compressors operating range.

BTW, though I do like cutting stuff up , that pic is not mine, but a bookmark I'd saved from another forum with the description of it being a compare of the two housings

 

[sweet97]

Just trying to get a mental and perhaps some info on possible flow. I would love for the Bullseye to get me the power I expected. Bought a laptop and will be trying TMO logging to see if I am DSMlink material. I am also going to try a chip that compensates for 750cc's and has 18* minimum timing advance. KEYDIVER gave me his OK to try it and I will see if more timing will help. From what I have read a restrictive turbine/exhaust needs more timing. I had been trying to make power with first 10* timing advance and then 14*. The buck was most likely caused by very high boost as I had a 20psi gauge and it was likely not accurate after 20 psi even taking a guess with the needles position. 30 psi gauge now. I am not getting another turbo so I will have to make the best of this one. The 650HP advertised is not likely with any mods but spray. 500+ I do expect. Thanks guys, mark

 

[joeracer321]

Just trying to get a mental and perhaps some info on possible flow. I would love for the Bullseye to get me the power I expected. Bought a laptop and will be trying TMO logging to see if I am DSMlink material. I am also going to try a chip that compensates for 750cc's and has 18* minimum timing advance. KEYDIVER gave me his OK to try it and I will see if more timing will help. From what I have read a restrictive turbine/exhaust needs more timing. I had been trying to make power with first 10* timing advance and then 14*. The buck was most likely caused by very high boost as I had a 20psi gauge and it was likely not accurate after 20 psi even taking a guess with the needles position. 30 psi gauge now. I am not getting another turbo so I will have to make the best of this one. The 650HP advertised is not likely with any mods but spray. 500+ I do expect. Thanks guys, mark

Mark what O2 housing do you use? I think you said you were a 3" exhaust the whole way through, that should be the minimum for that kind of power. 500+ HP is a lot and I don't know if it is going to be done on a mail order chip and a MAF-T.

 

[sweet97]

Buschur ported EVO3. Very much wide open. I found a guy making 500+ on 101 unleaded, MAF-T, AFR and the dyno. 11.0 @ 131. That's it for tuning and no better mods than myself except for the full Turbonetics he was running. I bought the laptop and will try TMO software to see if I am capable. The PALM and I were not compatible. Not until I added an 8lb. sledge was I capable of defeating the PALM! Mark
PS: Given the title of this thread should we be opening our turbines and grinding the material in question away? If any of this material could break away and pass through the turbine wheel that may not be good. However no-one was told by Bullseye to do this. No "recall" so to speak. Mark

 

[91gvr4]

Buschur ported EVO3. Very much wide open. I found a guy making 500+ on 101 unleaded, MAF-T, AFR and the dyno. 11.0 @ 131. That's it for tuning and no better mods than myself except for the full Turbonetics he was running. I bought the laptop and will try TMO software to see if I am capable. The PALM and I were not compatible. Not until I added an 8lb. sledge was I capable of defeating the PALM! Mark
PS: Given the title of this thread should we be opening our turbines and grinding the material in question away? If any of this material could break away and pass through the turbine wheel that may not be good. However no-one was told by Bullseye to do this. No "recall" so to speak. Mark

Yeah remember that One guy that ran that, but numerous people have done it with Aem, Dsmlink, Afc. You have all that invested into your setup and your still contemplating getting some type of Fuel control. Please invest the some into a fuel controller.

 

[uncle ben]

I am in no way saying its the turbo, but i dont think it needs a dsmlink to run right. I have personally tuned a car to a 11.33 @ 128.71 with nothing but a maf-t. The car has an old tmo chip, but the maf-t is the only thing that you can change. The fuel for the 850cc injectors is taken out in the maf-t. The car has a bone stock motor with cams and ebay intake manifold, so i think it might could be in the tuning. I havent looked at his mods list, but i will also say it will be hard to run a 10 second pass at 120 anything. I know its possible, but a killer 60ft and killer shifting would need to be done. I would think it would atleast have to be on drag radials all the way around. With a low 1.5 60ft, i would say a 10 @ 128-29 would be possible. You could ###### do it with a little lower mph, but you would have to be a driving mofo. Also, if your only running at 14 degrees of timing that could also be your problem. I would look hard into the tuning first, before i blamed the turbo.

 

[sweet97]

Questioning, not blaming. Got a laptop and will start with TMO logging to get familiar with the laptop and will try DSMlink when comfortable. Thanks, Mark

 

[Steve93Talon]

I am in no way saying its the turbo, but i dont think it needs a dsmlink to run right. I have personally tuned a car to a 11.33 @ 128.71 with nothing but a maf-t. The car has an old tmo chip, but the maf-t is the only thing that you can change. The fuel for the 850cc injectors is taken out in the maf-t. The car has a bone stock motor with cams and ebay intake manifold, so i think it might could be in the tuning.

The difference there is with only a MAFT and 850s, the timing table is gonna be through the roof. Assuming the guy was on C16 or similar and running like 12.5:1 AFRs without knock, of course it's gonna make crazy power like that - doesn't mean it's the correct way to tune it.

I havent looked at his mods list, but i will also say it will be hard to run a 10 second pass at 120 anything. I know its possible, but a killer 60ft and killer shifting would need to be done. I would think it would atleast have to be on drag radials all the way around. With a low 1.5 60ft, i would say a 10 @ 128-29 would be possible. You could ###### do it with a little lower mph, but you would have to be a driving mofo.

Tort's running a VPC with a 20g, and has gone 11.02 and 126.7mph with a 1.60. Previous best 60' was a 1.57 on an 11.05 @ 123 pass. I'd guess based on those numbers that if he'd maintained the 1.5x 60', his 126.xx mph would've been enough for 10s. He is on drag radials, and the resulting power increase that netted the 3mph increase also made the car that much harder to launch. It's definitely a fine line there.

Also, if your only running at 14 degrees of timing that could also be your problem. I would look hard into the tuning first, before i blamed the turbo.

I've told him that several times. 14 degrees of timing is fine for high boost on pump gas, but throw in some real octane and you're just not lighting it off early enough. All things considered, 122mph is damn impressive for his setup. Crank the timing to 24+ degrees, maintain decent AFRs on good gas, and there's ALOT more in the current setup.

 

[sweet97]

I wanted to tune for pump thus the low timing. I put some 100 unleaded in and changed chips to one that compensates for 750cc inj's and I have 950's so I took out 20%. Idled perfect from the start and took a short drive as the roads were wet and it sure felt like the motor liked the extra timing. When I can get a time that will tell. This chip is set for 18* minimum at wot, upper maps. 3rd gear seemed to pull harder and I am still on rough tune with the MAFT. This pull had 1 count of knock and I would like about 3 counts so could lean it 2% on rpm tuning. Hopefully will start logging with TMO next week to see if I can undrstand the laptop. I think TMO uses a graph which is not as simple as I would like but it's a start for me into the computer world! How does the ECU work with knock counts as far as still advancing, not retarding and retarding? I know after 7 counts it retards timing 1* for every 3 counts. Mark
PS: The roads dried and I was able to get a Scanmaster run in. 12.1x @ 119. No traction in first gear at all. Motor surely likes the extra timing. Very rough tune also. Only 1 count of knock still. That could be leaned a bit.

 

[uncle ben]

The difference there is with only a MAFT and 850s, the timing table is gonna be through the roof. Assuming the guy was on C16 or similar and running like 12.5:1 AFRs without knock, of course it's gonna make crazy power like that - doesn't mean it's the correct way to tune it.

I never said it was the correct way, just said that i didnt think it needed a link to be able to do it. Everyone kept saying with the link he could do it. Well i feel he could do it without the link, and this is the reason i made the post. To me the right way would be the way that works with what you have. People have been using afc's etc. to do it for years. Just because there is something better, doesnt make it the wrong way.

Tort's running a VPC with a 20g, and has gone 11.02 and 126.7mph with a 1.60. Previous best 60' was a 1.57 on an 11.05 @ 123 pass. I'd guess based on those numbers that if he'd maintained the 1.5x 60', his 126.xx mph would've been enough for 10s. He is on drag radials, and the resulting power increase that netted the 3mph increase also made the car that much harder to launch. It's definitely a fine line there.

You must not have read my post. I said with a low 1.5 you could do it with 128-129 and with lower if you were a shifting fool. If you will notice most poeple have higher 120's and low 130's running 10's. I would think it could be done with 125, but everything would have to be perfect on the pass. Which if his luck is anything like mine or the people i know, that doesnt happen very often.

I've told him that several times. 14 degrees of timing is fine for high boost on pump gas, but throw in some real octane and you're just not lighting it off early enough. All things considered, 122mph is damn impressive for his setup. Crank the timing to 24+ degrees, maintain decent AFRs on good gas, and there's ALOT more in the current setup.

Im not taking away from his 122 at all. I was just trying to help in saying that i dont think the dsmlink will automatically fix his problem. Im also not taking away from the link at all either. I have one on my personal car, but its not the only way to tune a car. I also dont think adding the link would put him in the 10's. I think he could get in the 10's with the link, but i think it would need a pretty good bit of tuning even with the link. So this is the reason i said he could do it with what he had with a little bit more tuning.

 

[gameGSX45]

Did anybody notice the Turbo Performance mag sitting under the housing with the Pruven Performance EVO as the feature???