New Full-race twin scroll setup GT3582r

[gawdzilla]

a
Modified by gawdzilla at 6:47 PM 1/25/2010

[OpeLok]

you're here in AZ? nice setup!

[gawdzilla]

thanks!

nope, I'm not in AZ. east coast near DC. FR had a booth set up at a local event here

[krayton]

was that a recent talk with geoff on the turbo setup? cause hes talking these borg warners up everywhere.

i was under the impression, from his info, that they performed like the GTs for a lot less money.

edit:

heres a thread using the Evos.

http://forums.clubrsx.com/show...11432

note that the gt35r is also using the ported tial shroud. and that BW turbo is matching it

im really curious though, cause those are the choices of my next turbo. just trying to figure if the BB of garret is worth it

[gawdzilla]

i did talk to him earlier than that test he posted. i think it was back in october. his impression of the BW was that they are great turbos for the money, and often just as good or outperform their garrett counterparts. he mentioned that if it were late 2009 or so, BW would probably be the way to go, but garrett is tried and true. he said at the time they were having big issues with getting cores supplied from BW, and they were being dodgy about their inventory. he also said getting a rebuild on a BW is tougher than a garrett, but i'm not sure if that holds true anymore. one other thing to mention is the v-band outlet is slightly different on the BWs, which would mean i'd have to redo at least the beginning part of my downpipe. non-BB non-water cooled vs. BB water cooled has its pros and cons too.

one other drawback of the 1.06 35r is the turbine housing is really big compared to the frame. the 35r still has a small center section diameter, but the 1.06 turbine makes it swell onto much of the center section. getting to the bolts is a bit of a pain, but i found some pretty good fittings from ATP that helped big time. if you notice in the pics how my coolant lines are run, they are a bit unorthodox, but it really was tight in there.

[krayton]

very cool.

yeah i was just curious. i was going with a gt like you from what geoff said way back when. but after some recent tests, BW seemed to come into play a bit more.

for cash reasons is the only thing. garret is def tried and true. and for us short on money and have to make a new DP anyways, BWs equivalent to the gt35r sounds like a good idea.

would take garret in a heart beat though. hopefully these tests can help lower garrets price tag or open some new doors

[SullivanRacing06]

are you keeping the gt series or going to the borg warner?

[BHFR-GTR]

hey gawdzilla, so your near dc, i am about two hours south of there, where are you located, its just nice to see a 26 owner so close

[gawdzilla]

hey gawdzilla, so your near dc, i am about two hours south of there, where are you located, its just nice to see a 26 owner so close

im 20-30 minutes from dc

[krayton]

what kind of wastegate setup are you running?

im still trying to figure if dual 38mm are good enough, or should just go like a full-race setup with dual 44s

[gawdzilla]

i'm running a single greddy 47mm. my w/g runners stay divided for about 8-10" before they merge. the wastegate itself is located after the steering column. no boost creep issues. dual 38s is probably enough, but the 44s are a bit more forgiving to work with cuz of the vbands.

i know this does not compare, but i had a ssac manifold with a single super short w/g runner tial 44mm on it and it would creep on the old gt40r

[Cjmartz2k]

My manifold is the same design as your full race--I'm considering chopping the wastegate runners before the merge and having another wasgate put on there to completely seperate the exhaust pulses to help spool/top end. Do the wastegates need to be exactly the same though? The 50mm I have right now has been heavily ported with a chopped spring. I don't know if I should order two new ones, or just one new one and use the old one also.

[krayton]

i dont think hes running a full race manifold?

are your cylinders completely separated? so if they are and you wanna run two wastegates, then you have to plug your original hole. because if they are completely seperated then the orginal wastegate hole should be tapping into both sections.

and wastegate runners can be different lengths. also you could use the same wastegate, prob should get a new spring so both wastegates are running the exact same spring.

[gawdzilla]

i'm not running a FR manifold. i'm running a greddy, which does keep the front 3 cylinders separate from the rear 3. It would probably be advantageous to run 2 separate wastegates, and FR did claim to make gains to make that worthwhile. However, Geoff mentioned that since my w/g runners are fairly long, there is probably little cross flow between 1-3 and 4-6, making my setup ok, but probably not ideal for TS. the only flow between 1-3 and 4-6 would be to go down one w/g runner and reverse back up a w/g runner. plus when the wastegate is open, the majority of the flow is exiting the wastegate.

how long are your w/g runners, and how is the 2 to 1 collector shaped? It would probably help my setup if i added a divider to keep the exhaust separated for as long as possible before the w/g itself. the idea behind TS is to minimize (or eliminate) cross flow