93AWDTalon1
15+ Year Contributor
- 175
- 1
- Oct 15, 2004
-
Louisville,
Kentucky
what lbs/min are the 64mm and 67mm S300 rated for?
What size turbine wheels do each of the S300's use?
What size turbine wheels do each of the S300's use?
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93AWDTalon1 said:what lbs/min are the 64mm and 67mm S300 rated for?
What size turbine wheels do each of the S300's use?
ITSME4G63 said:I've read that turbos below 74-75% efficiency for some reason are not very good due to the low efficiency?
DSM90AWD said:Now that Bulleye is a wholesaler, relying on their retailers to provide ALL info pertanant to their somewhat "unique" combinations, I do hope that Mike/Marti follow thru on their offers to test these
Can you also provide information on the B-E exhaust housing themselves? I've researched this housing on several different boards and found that it is just not sized well for the larger turbos (>49lb/min). Can you test backpressure at the manifold relative to boost?
Mark (Sweet97 in this forum) has had some tuning issues with the Holset 35/40 (Bullseye's last "new" turbo) which supposedly flows upwards of 70lb/min with the B-E housing but was unable to track down basic information from the Vendor (GRE) that sold to him. Consensus is that backpressure is too high at the boost level he's running (20-25psi) but there is no option for a larger bolt-on turbine housing.
Maybe you could offer him a hand
sweet97 said:I went so far as to contact Holset. They said there were many HX-40's with different wheels and the BEST would be doing well to flow 60lbs/min
gSx_r1der said:Why would you buy such a big turbo with a .48 a/r?? Why didnt you just shell out the $400 for the cast turbonetics manifold and run a .82 a/r hx-35/40. That might have flowed your requested 75-80lbs.
sweet97 said:How do you know that the Bullseye turbine is a .48a/r? I was told it was an .55 a/r and we can't compare a/r's between different turbine families. Who makes this .82 a/r you are speaking of? Holset? Like a 12^cm2 or an 18^cm2. Rather large don't you think? Oh, Holset doesn't make a hybrid like the HX-35/40. You must know something you're not sharing. I'll do OK. 122 in the 1/4 tuning with a MAFT isn't too bad. Something like DSMlink might get me an 11.25 at 125+mph.
Maybe next time I will get the T3 manifold and a true GT35R or GT40R. mark
gSx_r1der said:you have the option when purchasing the hx 3540 to get it in a t3 turbine housing, and if thats the case I'm willing to bet you can choose which t3 housing you want it in. which means .82 a/r is what you should have went with. on a t3 manifold in my opinion.
sweet97 said:Doesn't matter which bullseye turbine you get it's a .55a/r, same size for a Mitsu or T3 housing. I realize a Mitsu flange turbine is a compromise just as a PTE would be a compromize. It may be fine for their V trims and other 50lb/min type turbo's but when they get into the bigger flowing compressors the Bullseye turbine is a bit small. GREAT turbine, weighs 13#. SOLID construction, I like them. All I would have liked was an option for turbine sizes. I also realize that the owners of Biullseye did not have unlimited funds to work with and that perhaps even the foundry that was casting the housings had to kick in to get the turbines manufactured as it is. They offer the same turbine for 100lb/min compressors also, I don't think so, TOO small!. I will get the Holset to low 11's with DSMlink when I learn how to use s cell phone and then step up to a laptop. Right now I am typing this on webTV!!
I will say the Holset keeps up with cams that dwarf the HKS 272's I had, the Crower stage 4's and 8500rpm's through the gears at 30psi without dropping 1 psi.
I have learned that a T3 exhaust manifold and a GT35-Gt40 would be the way to go if I could do it all again. I even am intrigued by the Borg Warners and would try an 80lb/min model, the S366, if a vendor would take my Holset in trade against that $1250. turbo. Given $1250. most guys here would choose something other than a BG turbo. I would be the guy who would test a BG S366 and see what it would do with the Bullseye turbine. Thjat's all, compromise and all! Thanks, mark
Steve93Talon said:We've gone 126.8 mph on a 20g, which is rated at 44 lb/min. You can easily crack 130 on your setup.
DSM90AWD said:Topic
Coup D E'Tat said:You shoot numbers at everyone, and there is a problem - the results are not typical. How many others are running fast on Holsets with the BEP housing? Or have gone 126.8MPH on a 20G?
Sure, the times are possible here and there, but to say that every car with X setup will go X ET/MPH is ridiculous.
sweet97 said:If someone locally wants to tune DSMlink for me and teach me what I need to do it myself please step forward. I have the operating instructions and they might as well be a foreign language.