View Poll Results: Where is best mounting location for a turbo
On the exhaust manifold
24
44.44%
In the engine bay - in front of engine
16
29.63%
Rear mounted
12
22.22%
other
2
3.70%
Voters: 54. You may not vote on this poll
Turbo placement - where is best ?
01-19-2008, 02:39 PM
#1
Turbo placement - where is best ?
Been looking at all the various kits available trying to analyse where is the best place to put a turbo on the 8 so I thought it would be worth discussing.
Some initial thoughts ......
On manifold :
pros
*stealth
*Lower centre of gravity
*less heat to the engine bay
cons
*size of turbo able to be fitted
*more prone to road damage (stones etc)
*no bling factor
*hard to get to to work on
*some suggestion that exhaust ports get overheated ?
In engine bay:
pros
*Bling - looks nice
*Easy to get to for repair and tweaking
*can fit any size turbo you want
cons
*excessive heat in the engine bay
*lots of extra exhaust pipework to crack and leak
*possibility of frying electrics close to turbo
Rear mounted:
pros
*takes heat away from engine area
*long pipework for extra cooling
*adds weight to rear - better than adding it to front
cons
*easily damaged pipework and turbo
*Difficulty running pipes of decent diameter
*not as efficient ?
*rare
*Intake air - difficulty getting clean/dry air
Some initial thoughts ......
On manifold :
pros
*stealth
*Lower centre of gravity
*less heat to the engine bay
cons
*size of turbo able to be fitted
*more prone to road damage (stones etc)
*no bling factor
*hard to get to to work on
*some suggestion that exhaust ports get overheated ?
In engine bay:
pros
*Bling - looks nice
*Easy to get to for repair and tweaking
*can fit any size turbo you want
cons
*excessive heat in the engine bay
*lots of extra exhaust pipework to crack and leak
*possibility of frying electrics close to turbo
Rear mounted:
pros
*takes heat away from engine area
*long pipework for extra cooling
*adds weight to rear - better than adding it to front
cons
*easily damaged pipework and turbo
*Difficulty running pipes of decent diameter
*not as efficient ?
*rare
*Intake air - difficulty getting clean/dry air
Last edited by Brettus; 01-20-2008 at 12:22 PM.
01-19-2008, 04:37 PM
#5
The Professor
Last edited by staticlag; 01-19-2008 at 04:49 PM.
01-19-2008, 04:45 PM
#6
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I'm going to have to go with rear mounted.
Setup up correctly you could have a ~95% efficient intercooler system and zero turbo lag. Ease of access to turbo and wastegate, and better balance.
I'm thinking one 3" pipe with a resonator going back to feed 2 stock greddy size turbos hung from the stock exhaust mounts in place of the muffler. With those two turbos there would be no need for a muffler, just in one end, and then a short 4" of tube and right out the stock exhaust ports.
Run some 1.5" inch tube from each turbo near the stock fuel rail area to an inter cooler then to the manifold.
Would put down some serious numbers.
Setup up correctly you could have a ~95% efficient intercooler system and zero turbo lag. Ease of access to turbo and wastegate, and better balance.
I'm thinking one 3" pipe with a resonator going back to feed 2 stock greddy size turbos hung from the stock exhaust mounts in place of the muffler. With those two turbos there would be no need for a muffler, just in one end, and then a short 4" of tube and right out the stock exhaust ports.
Run some 1.5" inch tube from each turbo near the stock fuel rail area to an inter cooler then to the manifold.
Would put down some serious numbers.
01-19-2008, 09:21 PM
#10
is adjusting valve lash
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i think its logical to use a rear mounted turbo if a kit comes for the 8.
reason is the pros of that set-up will REALLY benefit the 8 in terms of heat and reliability... 8's can't run huge turbo's and are not meant to be boosted ****** high with stock high comp rotors anyways... so this is what will save the 8 from all those poorly tuned fi 8's from an early death...
i already know those with the current greddy kits or anything else thats manifold mounted may disagree... however, i don't have a turbo and i think somewhat my opinion are not biased.
so if they did come with a rear mounted turbo kit by the time my warranty is over...i just may consider one with that set-up. for the right price of courses.
i mean, whats so bad about the rear mounted??? longer tubes? drop of 1 psi?
from what i recall... the t18z or the small greddy turbo still has room left to be boosted higher, right? and speaking in all modesty, i would not run the 8 with boost to make the 8 over 300whp. so this may be good.
someone make a kit!
reason is the pros of that set-up will REALLY benefit the 8 in terms of heat and reliability... 8's can't run huge turbo's and are not meant to be boosted ****** high with stock high comp rotors anyways... so this is what will save the 8 from all those poorly tuned fi 8's from an early death...
i already know those with the current greddy kits or anything else thats manifold mounted may disagree... however, i don't have a turbo and i think somewhat my opinion are not biased.
so if they did come with a rear mounted turbo kit by the time my warranty is over...i just may consider one with that set-up. for the right price of courses.
i mean, whats so bad about the rear mounted??? longer tubes? drop of 1 psi?
from what i recall... the t18z or the small greddy turbo still has room left to be boosted higher, right? and speaking in all modesty, i would not run the 8 with boost to make the 8 over 300whp. so this may be good.
someone make a kit!
01-19-2008, 09:47 PM
#11
The Professor
i think its logical to use a rear mounted turbo if a kit comes for the 8.
reason is the pros of that set-up will REALLY benefit the 8 in terms of heat and reliability... 8's can't run huge turbo's and are not meant to be boosted ****** high with stock high comp rotors anyways... so this is what will save the 8 from all those poorly tuned fi 8's from an early death...
i already know those with the current greddy kits or anything else thats manifold mounted may disagree... however, i don't have a turbo and i think somewhat my opinion are not biased.
so if they did come with a rear mounted turbo kit by the time my warranty is over...i just may consider one with that set-up. for the right price of courses.
i mean, whats so bad about the rear mounted??? longer tubes? drop of 1 psi?
from what i recall... the t18z or the small greddy turbo still has room left to be boosted higher, right? and speaking in all modesty, i would not run the 8 with boost to make the 8 over 300whp. so this may be good.
someone make a kit!
reason is the pros of that set-up will REALLY benefit the 8 in terms of heat and reliability... 8's can't run huge turbo's and are not meant to be boosted ****** high with stock high comp rotors anyways... so this is what will save the 8 from all those poorly tuned fi 8's from an early death...
i already know those with the current greddy kits or anything else thats manifold mounted may disagree... however, i don't have a turbo and i think somewhat my opinion are not biased.
so if they did come with a rear mounted turbo kit by the time my warranty is over...i just may consider one with that set-up. for the right price of courses.
i mean, whats so bad about the rear mounted??? longer tubes? drop of 1 psi?
from what i recall... the t18z or the small greddy turbo still has room left to be boosted higher, right? and speaking in all modesty, i would not run the 8 with boost to make the 8 over 300whp. so this may be good.
someone make a kit!
the direct cons of a remote or rear mounted turbo setup is cost. Thats a lot of piping that you are going to have to pay to get fabricated.
And if you watched the video, lubrication is also a problem that needs to be addressed.
01-19-2008, 10:41 PM
#13
Metatron
iTrader: (1)
Rear mounted has the additional con of having NO access to clean air for the intake - I've only seen bastardized efforts at locations, even the best of them is in a wheellwell - awful!
S
S
01-19-2008, 11:49 PM
#15
is adjusting valve lash
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we need a pic of a stripped car.
01-20-2008, 12:23 AM
#16
is adjusting valve lash
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yeah...i guess a lil further back from the manifold is the best place. as long as it can be far enough back to not vent heat back into the engine...
just noticed...what if your cat blew out? for those who choose to stay with a cat...your turbo is fucked with the rear mount...bad idea.
just noticed...what if your cat blew out? for those who choose to stay with a cat...your turbo is fucked with the rear mount...bad idea.
01-20-2008, 02:21 AM
#17
but i dont think so. im sure some sort of roof mounted (or side mounted behind the rear door windows or thereabouts) air ducts could be built. supercars do it all the time. the real problem i see is that you would be exposing the turbo directly to the street. and as i use my 8 as a dd, i just dont see that as plausible. but maybe its fine.
01-20-2008, 02:26 AM
#18
is adjusting valve lash
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i know you know more than me.. so bear with me. but i dont think so. im sure some sort of roof mounted (or side mounted behind the rear door windows or thereabouts) air ducts could be built. supercars do it all the time.
the real problem i see is that you would be exposing the turbo directly to the street. and as i use my 8 as a dd, i just dont see that as plausible. but maybe its fine.
but i dont think so. im sure some sort of roof mounted (or side mounted behind the rear door windows or thereabouts) air ducts could be built. supercars do it all the time. the real problem i see is that you would be exposing the turbo directly to the street. and as i use my 8 as a dd, i just dont see that as plausible. but maybe its fine.
kinda like a turbo mr2 style...if you think about it...the concept is similar.
01-20-2008, 09:51 AM
#19
i'm the undead
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i've grown accustomed to seeing in front of the engine. i think it's cool for a couple of reasons. having access to it and having more size options are among the most important of the reasons. access was my biggest complaint for my MR2 and i suspect sizing may be an issues with my current Rx-7 project. i won't be turbocharging my current Rx-8, but i might in a future project and i think the front placement is the ideal solution for my concerns.
01-20-2008, 11:39 PM
#20
The Professor
yeah...i guess a lil further back from the manifold is the best place. as long as it can be far enough back to not vent heat back into the engine...
just noticed...what if your cat blew out? for those who choose to stay with a cat...your turbo is fucked with the rear mount...bad idea.
just noticed...what if your cat blew out? for those who choose to stay with a cat...your turbo is fucked with the rear mount...bad idea.
True, i forgot about that, I wonder how the STS turbo handles that
Likely you would have to get a metal core cat to make it work.
01-22-2008, 11:35 AM
#21
RotoRocks Powered
That cat is dual core, remember? 1rst half burns and clogs the second half. You are done. no more boost, no more GO, Turbo is safe and sound.
Ask me how I know
There is nothing wrong with hanging the turbo in the back.
The intake placement is also not an issue. intake filter sitting inside the rear fender is perfect. It is about 2-3" higher than your tail pipe tips, there is never water there even at high speed hitting a huge puddle, and the air up there is as clean as it gets anywhere else, plus it is truly cold.
Ask me how I know
There is no risk of exposing the pressure pipe. 2" alluminized steel pipe fits perfectly well on the other side of the differential (parralel to exhaust) held with the cross braces. It is no more exposed to anything than your exhaust pipes.
turbo itself is not afraid of water, and you have much higher chances of ripping apart your muffler (and you don't see it happening anywhere do you?), than damaging that turbine, by banging it on something.
By the way all of this questions and issues were addressed long ago in my "another turbo" thread, where the initial build took place more than a year ago (and almost 30,000 miles)
Vlad
01-23-2008, 08:53 PM
#23
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rotorocks: Could you show me where the filter sits (with a picture) I'm VERY interested in your kit, I'm just wondering if I should get a custom box w/ duct built (or maybe you might incorporate one into your design) for the filter.
01-24-2008, 11:10 AM
#24
RotoRocks Powered
See where the oil pump is located, above the exhaust tip?
Exactly in the same spot but on the opposite side, currently I have stuffed the intake filter. If you ever looked under that fender, you'll see how big, clean and secure of a place that pocket is.
Last edited by rotorocks; 01-27-2008 at 11:55 PM.
