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Old 01-03-2013, 01:06 AM   #31 (permalink)
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Default Re: DR-750s 700 AWHP capable on pump gas?

Quote:
Originally Posted by eengler2 View Post
Open dumps do nothing when you are spooling. The wastegates are closed until you meet your boost target so there is nothing to dump. Correct, they won't hurt anything.

Why are you even worried about spool with DR750's on a 3.5???

This thread is weird.






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Sorry I'm typing this stuff on my phone and is a pita I had actually just tried to edit that info in and accidentally pressed cancel while trying to scroll. Anyway I'm not overly worried about the spool of the DR750s on the 3.5L that's the reason I picked this setup to begin with. I believe it will net me the widest power band with the least lag I can get, which is the she goal for my car.

I don't think I have convayed that very well up till this point, the purpose of the thread was to ask if this was the best set up for that or if there were better setups for this purpose.

The open dumps will be on long before the engine/turbo combo goes in they are mainly for the 9bs I'm running now, just see no point in removing them later when they aren't going to hurt anything and will still have a cool factor when I'm not pushing the 30 psi.
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Old 01-03-2013, 02:03 AM   #32 (permalink)
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Default Re: DR-750s 700 AWHP capable on pump gas?

i don't understand why people here believe the only way to have little turbo lag is small turbo with bigger engine. we are so damn behind. other platform run higher compression ratio to get rid of this issue. people run as high as 11:1 ratio to get good power band. not only that they make more power per psi because of that. if you can get E85 or pretty good pump with big methanol i would run 10:1 or higher to get rid of this issue . i bought my stroker with 9:1 ratio and when i look at other platforms, i sometimes wished i went with 10:1 ratio. AMS up their GTR's compression ratio from factory to get better tq and power band when they build the engines and the factory gtr already has 9.5:1 ratio.

this is what a 10:1 ratio on e85 does. the turbo is not even that big, but e85 and high compression ratio helped with good power and good spool. so little lag for a 900whp 3.0L engine.
http://www.youtube.com/watch?v=Bh9N4...ature=youtu.be
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Old 01-03-2013, 07:20 AM   #33 (permalink)
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Default Re: DR-750s 700 AWHP capable on pump gas?

You make a very good point Gump that i guess I've never been very clear on when using the 3.0 v 3.5 comparison. Net HP will be the same, you're just gonna get it sooner. and maybe lose is on the back end quicker, kind of like big turbo setups do with our stock truck cam.

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Old 01-03-2013, 07:22 AM   #34 (permalink)
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Default Re: DR-750s 700 AWHP capable on pump gas?

Also e85 isnt available anywhere readily but the midwest and other pockets of population. And thats also very likely going away now that its no longer subsidized by the govt.

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Old 01-03-2013, 08:23 AM   #35 (permalink)
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Default Re: DR-750s 700 AWHP capable on pump gas?

keep in mind... he's in Canada. His "good gas" is probably more like 91.5 in terms of the way the U.S. regulates octane ratings. At leat thats what the local gas stations here (who's gas comes out of Canada, we literally live right on the border) are now required to list their "Super" gas as. (they used to advertise it as 93 as it was sold across the border... but it cost a few people their engines myself included... threats of lawsuits ensued) Also it sounds like he's at a pretty good elevation, and has a LOT of tight lowspeed turns. He's finding 9b's laggy based on where he is and the conditions he drives in. 9B's. When was the last time you heard or thought to yourself "man... I wish these stock turbos spooled faster..." Probably never. But that is the reason he's looking for faster spool. People seem to keep forgetting this. Telling him a dr-750 on a 3L will spool plenty fast enough, or focusing too heavily on the HP number isn't really going to help him.

To me, a summary of what he's looking for:
1) Stupid fast spool (to most of us anyways... I'm going to assume his engine/turbos are in good shape with no boost leaks and it truly is driving and environment where he lives as he stated early in the thread that are the cause of this need)
2) More power, 700 "goal" (because... well... who doesn't want more...)
3) Wide power band, starting very very low in the RPM range (see #1)
4) 1-3 accomplished on crappy Canadien gas (there IS a reason that Eric brought a can of crappy Canadien gas with him when he had Ray tune it the first time) and meth

I really do like everyone on this forum... there is a wealth of knowledge on this and the other site, and I've never seen a more helpful community but sometimes it seems like people lose track of the original intent of the thread and get to focused on 1 or 2 items or sentences or skim over important details like quality of available gas.
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Old 01-03-2013, 09:00 AM   #36 (permalink)
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Default Re: DR-750s 700 AWHP capable on pump gas?

That crappy canuck gas is better than our 93, Erics car couldn't even get into boost at ng10 on 93 w/o knocking like crazy.

Jason
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Old 01-03-2013, 09:43 AM   #37 (permalink)
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Default Re: DR-750s 700 AWHP capable on pump gas?

hmmm... Thats info I didn't know... and checking the rating systems, petro canada "ultra 94" for is 94 (R+M/2). So that would support what you're saying.

I do know however that the gas they were trucking across the border and selling as 93 here actually only tested at 91-ish (R+M/2). Wouldn't be the first time someone's done something shady with the gas here though so maybe I shouldn't lay blame on all Canadien gas.

I recind my comment about doing it on crappy gas until the OP gives us more info on whats available to him.
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Old 01-03-2013, 10:39 AM   #38 (permalink)
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Default Re: DR-750s 700 AWHP capable on pump gas?

sometime i wish JasonY was closer to me :-D . Anyways, I have seen many people talking about how much they can get out of a set up. It always involves Meth.

I hate Meth for a reason (Jason stated)

Also, Jason has been through many tubors on his own. I would take his words on the pump gas. I too did many researches about turbos systems and so I never seen any TD04 which broke 600 AWHP with Pure Pump gas.
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Old 01-03-2013, 10:47 AM   #39 (permalink)
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Default Re: DR-750s 700 AWHP capable on pump gas?

I wish we had e85 here in canada! All well theyre talking about it but they dont want to use food as a fuel source! pffft who eats corn anywayz!
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Old 01-03-2013, 10:57 AM   #40 (permalink)
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Default Re: DR-750s 700 AWHP capable on pump gas?

Quote:
Originally Posted by pimprn View Post
I wish we had e85 here in canada! All well theyre talking about it but they dont want to use food as a fuel source! pffft who eats corn anywayz!
LOL...It is in more food than you think. Just talk about Corn Syrup for example. . . Corn Oil ? ETC..
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