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Old 12-16-2007, 07:49 PM   #46
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Re: hey im new

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Originally Posted by BlinkRA182
...jason?

sorry if im wrong. kinda put 2 n 2 together, since i see you are in Utah as well.
ha yep that'd be the one. thats also where i heard bad things about the setup lol pretty good source id say...
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Old 12-17-2007, 11:10 AM   #47
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Re: hey im new

Different sized turbos are more of a problem on the exhaust side than the intake side. Increased pressure on the exhaust side means less flow through the engine on the bank of cylinders with the smaller turbo on it. This will effect the amount of oxygen flowing to each bank.

Basically the side with the smaller turbo will run rich and the side the with bigger turbo will run lean. The closer the exhaust wheels are in size to each other the less the difference will be. 13G's and 15G's are both available in TD04, TD04H and TD04HL exhaust wheels, so the set that Emily is running may be the same turbine wheel, and it may be different.


Also the supra has a sequential twin turbo setup, however they are not different sized turbos. They are both the same turbo, and exhaust is routed to just 1 of them until boost starts to build, then it is routed through both turbos.
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Old 12-17-2007, 11:51 AM   #48
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Re: hey im new

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Also the supra has a sequential twin turbo setup, however they are not different sized turbos. They are both the same turbo, and exhaust is routed to just 1 of them until boost starts to build, then it is routed through both turbos.
sounds expensive for a repair. the supra is featured in a new toyota add, there's a poster on the wall behind like a carolla or something. there's also an mr2 on the wall too. thought it was cool that toyota is proud of the cars they build...even 6/7yrs after production ended...mitsu doesnt advertise like that. maybe they should with the evo...show the evolution of it...no pun intended
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Old 12-17-2007, 01:44 PM   #49
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Re: hey im new

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Originally Posted by vectorspecialist
sounds expensive for a repair.
Really? It sounds like a wastegate to me.
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Old 12-17-2007, 02:32 PM   #50
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Re: hey im new

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Originally Posted by jason_bet
Yup this is my girl friend.. Looks like she got quite the welcome!

About the whole 13g/15 set up.. or any small/big combo set ups... Here is the problems with them..

Lets say you have 9b with a 15s set up.. sure thing the 9b will spool faster and then the 15g will spool faster.. but once the 9b hits its limmit It is going to be blowing hella hot air and killing the efficiency of the set up.. killing a big point of having bigger turbos.. now if you have that set up and are not running it past the 9bs capability's.. Then why upgrade in the first place..
Basically bigger turbos are good for two things.. the ability to run more boost.. and being way more efficient.. (staying way cooler)....

Does anyone else have thoughts on that?

Jason
you're right, it's not the most efficient set-up, and twin 15g's would be best. HOWEVER, the 13g and 15g are so close in size, that the downside is negligible. It will put out more power than a twin 13g set-up, but less than a 15g set-up. a 9b and a 15g would not be a smart set-up. 13g/9b wouldn't be so bad, and is what my dad was running originally with his rear turbo started going. Then when he had the car down again for a built engine, etc, he decided to go with a 15g turbo to replace his other 9b... since the price difference is so small between the two turbos.

For the boost my dad would have been running on the car, the size difference wouldn't have mattered at all, and wouldn't have had any negative side-effects.
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Old 12-17-2007, 02:59 PM   #51
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Re: hey im new

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Originally Posted by talskinyguy
Really? It sounds like a wastegate to me.
i was thinking that if something happened to the first turbo...something would happen to the second one...and that would likely lead to expensive replacement/repairs
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Old 12-17-2007, 03:54 PM   #52
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Re: hey im new

They aren't in-line. My understanding is that they are 2 turbos that bolt to the same manifold and a wastegate style actuator opens to allow exhaust to flow through the 2nd turbo once some boost is created.
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Old 12-17-2007, 04:22 PM   #53
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Re: hey im new

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Originally Posted by talskinyguy
They aren't in-line. My understanding is that they are 2 turbos that bolt to the same manifold and a wastegate style actuator opens to allow exhaust to flow through the 2nd turbo once some boost is created.
Yep.
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Old 12-17-2007, 05:18 PM   #54
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Re: hey im new

vector- cold air benifits because of density. Cooler air isn't as expanded as hot air.. consider an 18 wheeler tire driving through the desert. The air will expand and pop the tire because of heat --- pressure. Cooler air would make the tire flat. Same thing as the cylinder. More cooler air can be fit inside, more fuel, more power.
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Old 12-17-2007, 05:18 PM   #55
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Re: hey im new

what about the evo 3's? how are those compared to the 15's????
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Old 12-17-2007, 05:22 PM   #56
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Re: hey im new

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Originally Posted by Crackhedbob341
what about the evo 3's? how are those compared to the 15's????
quite a bit more expensive for the set-up, great power, more lag.

Awesome set-up if you can afford to fork over the extra money.
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Old 12-17-2007, 05:32 PM   #57
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Re: hey im new

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what about the evo 3's? how are those compared to the 15's????
They Freakin Rock!
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Old 12-17-2007, 05:36 PM   #58
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Re: hey im new

Its the set up I am going with.
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Old 12-17-2007, 05:46 PM   #59
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Re: hey im new

ok, when i said i thought cooler/cold is is better, i already knew, it was sarcasim. if it was bad y would the honda boys b snatching up cold air intakes like fricken hot cakes? tho they'd do anything for a lil more power...granted they don't usually give anythign back but powertrain loss, if that
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Old 12-17-2007, 10:19 PM   #60
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Re: hey im new

Quote:
Originally Posted by vectorspecialist
ok, when i said i thought cooler/cold is is better, i already knew, it was sarcasim. if it was bad y would the honda boys b snatching up cold air intakes like fricken hot cakes? tho they'd do anything for a lil more power...granted they don't usually give anythign back but powertrain loss, if that
Those, so called, CAI's aren't. Unless there is something separating the filter from the engine bay a more appropriate name is hot air intake. Their only benefit lies in better flow.

They will gain 1-2HP from a standard CAI. Even with a proper one any little Honda engine will only flow enough to gain 5HP at the most. Not anywhere near enough to make up for drivetrain loss. Even large engines with decent flow wouldn't be able to make that up with a simple CIA.
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