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front mount turbo v.s. rear mount turbo

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Old 02-04-2006 | 02:29 AM
  #101  
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some people dont like filling bottles every few runs..lol
Old 02-04-2006 | 10:40 AM
  #102  
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Originally Posted by engineermike
For 400 rwhp, I wouldn't bother with spray. Bolt on's and the Cheatr cam will pretty much get you there and pass smog.
exactly. a 224/228 cam and bolt-on's should get you 400rw without a problem.

Pass smog? what's that?
Old 02-04-2006 | 05:47 PM
  #103  
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Default What is wrong with rear mounted turbos?

Just that. I am trying to decide with no luck on which turbo setup to go with. Can anyone explain to me the pros and cons of a rear mounted turbo set up compared to any of the other setups that mount the turbo close to or in the engine bay? What is it, lag time? Max HP output way low? The rear mounted setup looks good at first but I know nothing about turbos. I am just going to get one but not sure what style to go with.

To help I will say I plan to drive the car all the time and hope to make 700+ RWHP with the 408 and a Turbo kit of some sort.

Thanks for your input.
Old 02-04-2006 | 05:56 PM
  #104  
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If your stuck on a 408 only... I would encourage you to look at a front mount. From all of my research, you cant tuck a big enough turbo under the back to capatilize on the big cubes...

And this is comming from a rear mount lover....
Old 02-04-2006 | 09:13 PM
  #105  
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Thats scarry. I am truely looking to do the whole thing myself. Fab and all. I know the rear kit set up would be the easiest for me to do. But if the rear mount won't work to feed a 408 then I will do the extra work to make a forward mount kit instead.

The problem with a foward mount in my setup is I already have a very nice set of headers that I realy would love to keep. I like the look under the hood with these. A rear mount I could keep these, but a foward mount would mean changing them out to something else. I am not sure that headers are realy not that useful with a turbo but they do look good.

I am thinking if I go forward I would use the factory manifolds, run the exhaust under one side of the K member to the turbo. Install the turbo in front of the engine and behind the radiator, as high as I can fit it. Then run the return under the opposite side of the K member. Doing this would require quite a bite of length in the hot side from the manifolds to the turbo but not as much as a rear mount. It would also make the cold side better in my view, considering the air intake could run threw the factory filter box(colder and cleaner air then from under the car). Also less piping for the cold air side. I am just conserned with heat from the turbo in the engine compartment and the loss of any and all room for working on the accessories. If I had a nice set of short headers instead of the long tubes I have I would like the setup better.

What do you think?
Old 02-05-2006 | 12:13 AM
  #106  
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I've got a custom rear mount and a 408. No trouble so far capitalizing on the big cubes.
Old 02-05-2006 | 06:28 AM
  #107  
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How is the lag time? How much boost can you make with it? What is the rpm that it hits? DO you have an intercooler.

I am looking for something that can make at least 15psi and I do not want too much lag time. I can probly stand a little though. Would launch better if it did not all come on at once. I also eun a 3800 stall so that might help it to boost qiucker. The main area I am worried about as far as lag time goes is like from a 50 mile an hour role. I drive a new F450 Deisel for a work truck. It has some shitty lag time on the turbo. From a stop, you will cross two lanes before the turbo kicks in. I am talking you can count one Mississippi, Two Mississippi, then it will kick in.

I know, its a Ford
Old 02-10-2006 | 02:38 AM
  #108  
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Default What do you really think about STS' turbo?

I'm leaning more and more towards turbos than superchargers lately. I see topics about STS turbo, and you can't really beat their price.
But, the only thing I hear is good things about this system, but I'm wondering any downsides to it. I orignally wanted a D1SC running about 8lbs, which the STS can also. But I've only seen the STS kit move ls1s about 1-5 seconds in the 1/4, while the D1sc giving people about two seconds, and both are putting down about the same numbers.

So, what are the downfalls comparing the two systems?
Old 02-10-2006 | 06:40 AM
  #109  
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Well just so you know, i dont believe there is an STS f-body i nthe 10's yet unless it was hit just recently which i havent seen posted. LongRange4U hit 11.01 i believe as the fastest but then he blew his #7 piston. Both kits are great but i like the turbo a little more. However, if yuo are lowered at all, you will scrape your sts kit. Also if you are a little leary about having your turbo out i nthe open and under your car, then id go with the D1SC or check into a different turbo kit (hi-flo when they get theres out, or GMR) Both of which i believe are as cheap as the D1SC but GMRs price competes with the STS's. The STS will net a little more power, but the D1SC may be an easier install/tune, etc.
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Old 02-10-2006 | 06:49 AM
  #110  
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The STS kit looks inexpensive until you add in the options necessary to make it compete with the other systems out on the market. It does make more power than I thought it would, with no perception of turbo lag. Bob
Old 02-10-2006 | 09:13 AM
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look at EPP web page they just built scotts sts camaro, and it is difiantly a 10 sec car they just need to get it to the track. its a little cold up there.
Old 02-10-2006 | 09:26 AM
  #112  
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I think STS kits are awesome, for what you pay and the power gain that you get, the STS is definately one of the best FI kits out there + you can upgrade to a bigger turbo if you want.
Old 02-10-2006 | 09:43 AM
  #113  
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let see...everyone that i have heard of with an STS is traction plagued...so they just need some more track time and some better components so they don't break stuff trying to go 10's or lower
Old 02-10-2006 | 09:44 AM
  #114  
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what do you have to add to it to get it up to other kits out there??

any stock ls1 is gonna need more components to be able to handle a turbo period.
Old 02-11-2006 | 03:59 AM
  #115  
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Like pumps, injectors, ect.

So should I think about getting the STS, or spend it elsewhere? Still kinda like the idea of TD and a D1SC, but turbos seem to be going to the best route. Can you run a TD setup with the STS?
Old 02-11-2006 | 05:13 AM
  #116  
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I'm not a fan at all of rear mount setups. To each his own.

Mark
Old 02-11-2006 | 05:22 AM
  #117  
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I know about a dozen STS owners.
All are very happy and most daily drive their cars.
The are plenty of fast STS cars.
Soon to be a lot more on the road in the next couple of months.
Old 02-11-2006 | 06:40 AM
  #118  
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Originally Posted by mdhmi
I'm not a fan at all of rear mount setups. To each his own.

Mark
+1

Te design itself is fundamentally flawed. There are zero fast (6's/7's) cars
running rear mount turbo kits...at least that I'm aware of.
Old 02-11-2006 | 06:49 AM
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Originally Posted by black01_WS6
look at EPP web page they just built scotts sts camaro, and it is difiantly a 10 sec car they just need to get it to the track. its a little cold up there.
Yes it is, Mike. We need to get this car to a track asap. Bob
Old 02-11-2006 | 07:07 AM
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Originally Posted by Superman09
Well just so you know, i dont believe there is an STS f-body i nthe 10's yet unless it was hit just recently which i havent seen posted. LongRange4U hit 11.01 i believe as the fastest but then he blew his #7 piston. Both kits are great but i like the turbo a little more. However, if yuo are lowered at all, you will scrape your sts kit. Also if you are a little leary about having your turbo out i nthe open and under your car, then id go with the D1SC or check into a different turbo kit (hi-flo when they get theres out, or GMR) Both of which i believe are as cheap as the D1SC but GMRs price competes with the STS's. The STS will net a little more power, but the D1SC may be an easier install/tune, etc.

friend of mine is pushing 525rwhp on his STS through a TH-400. i know it has been 10.98 on the dyno when it was at 477rwhp. And doubt it'll have a problem doing so on the track as soon as it opens.

Last edited by 01Lowboy; 02-11-2006 at 07:19 AM.


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