Turbo Tahoe Worklog
 

I started this over at turbomustangs.com, so some of it is a copy/paste. I'll update it when I have something worth saying.

JUST starting, but I figured I would let yall see what I was doing. Also, from what i have seen, not many projects like this has been done before, so I figured I would give those few interested a place to look. This is an extreme budget set-up and will take some time, so yall bear with me.

*1998 Chevy Tahoe with 5.7L Vortec 5700
*Factory stock besides exhaust, rims/wheels and a stereo.

Just in the planning (mental masturbating as some say) stage right now. I was considering a T04E-60 but decided it would be too small as a single. This is what the foam is modeled after though. As you can see, even with a larger turbo, size will probably not be an issue. Especially once I move the battery to the rear.
http://img386.imageshack.us/img386/2797/dsc001532xs.jpg
6" X 7" X 8"
http://img487.imageshack.us/img487/6711/dsc001543er.jpg
http://img386.imageshack.us/img386/803/dsc001569uq.jpg
^ With Air box and ducting pulled up.

http://img386.imageshack.us/img386/5483/dsc001594tr.jpg
^Ideal position.

http://img386.imageshack.us/img386/503/dsc001618tm.jpg
http://img487.imageshack.us/img487/4408/dsc001627na.jpg
^With some gentle messaging :P(sp?) of the lines in the compartment, I think I will be able to come up with at least 4-5^3ft of working space.

Please excuse my rudamentary design criteria, I lack the petty cash($10,000) to pick up a copy of AutoDesk Inventor or something of the like for designing. I'll make some official designs when I return to school after spring break. The exhuast is already routed to the pas side, so I think I will do as I saw somweone esle do. Keep the drivers side manifold the way it is and just cut off the exhaust and fab up a pipe that will connect to the custom ps manifold. I will be doing some research into airflow charicteristics, as I do not want to choke the turbo with a shitty exhaust mani design.

http://www.turbomustangs.com/turbotech/diag2.jpg
*Img rights of the creator. Image was linked off of the turbo bible.


Just looking over it and wanted to say sorry for the poor image quality. Twas a cold, late night and I was all alone. Updates along with questions and plans will come soon. Any and all comments are very welcome.

Thanks for looking!
Randy

Re: Turbo Tahoe Worklog
 

I'm building this to be a fun driver, I love sound, I love this vehicle, love the idea of a sleeper, and cream myself everytime I think of getting in it and hearing that motor scream, the turbine whistlin and being pushed back in my seat. Some wonder why even put money into an SUV/pick-up to make it fast, but hey, "to each, his own". I'm not going for crazy power, no more than 400 horsies on the ground (my dad calls me abnormal, saying 400HP is not crazy power ) and no specific ET. I will replace the pistons with something a little more boost friendly, and I am considering rods, but crank may stay. I have read of a few people doing very well with stock cast iron cranks, and making more power than I plan. No FMU, but I am unsure of management as of this moment. That's abotu all I can think of before I go to bed. I'll bring this back up once I have something important to say.

I remember something I wanted to say. The stock fan and shroud make placing a decent sized IC literally impossible, so I decided I would save up and go for either one mondo electric or two smaller ones so I could get that shroud off and an IC in there. I want my 11PSI to be as cool as possible.

Re: Turbo Tahoe Worklog
 

Was doing some research today and found I can get forged pistons for stock bore/stroke 350's for $29.99 :D I think I will go with that at first, watch the boost/HP and then as I get moolah, continue swapping out the internals and upping the power.

Looking into my options. I got a flow map from some website I got to through the knowledge base and it gives some pretty high numbers, so I am going to have to check that out and see if I can validate it. They are I think 10lbs/min higher than my cals were. Until then, I won't be mapping anymore compressors. I'll make sure and look into the hx35w though.

Re: Turbo Tahoe Worklog
 

I'm pretty sure you could squeeze a pair of reasonably sized T04b snails in there. The T04b is much easier to find cheap, as the technology is considered obsolete in comparison with the T04e. I'm looking at some of the piping (pulled up a full bay pic of a Tahoe) and it could be interesting. Is it an AWD or RWD? A turbo Tahoe would be very cool, kind of like a more powerful Typhoon/Syclone. Perhaps a pair of 60-1s off of SVO Mustangs or turbo Thunderbirds would work better. I will have to find the issue, but HotRod Magazine had a snippet of a Canadian built Tahoe running a 408ci V8 on twin snails making an easy 1000+ HP. Certainly cost a bit, but could be replicated JY style for much cheaper. As far as exhaust manifolds, there was a TT Firebird at one point, wasn't there? Exhaust ports on the Vortec's may be different, but it may be worth checking out. Neat project though.

Henry

Re: Turbo Tahoe Worklog
 

I have been thinking about twins, just not sure what would suit me best right now. I am going to do some more math (once I get the flow #'s confirmed) and look into it. My Tahoe is only 2WD, don't have to worry about the extra stuff down there :) I'm not sure about the Firebird, I'll have to check it out.

Re: Turbo Tahoe Worklog
 

SSauto makes some turbo manifolds :-X Probably junk like the rest though.Those Vortec 350's are great engines and I still prefer them over the 4.8 and 5.3 that replaced it.What kind of forged pistons are you going to get for under $30?Sounds a little to good to be true.

Re: Turbo Tahoe Worklog
 

I would prefer to make my own actually. I am getting into fab, and would love designing/creating my own. I really like the motor as well. 255hp @ 4600 and 355tq @ 2800 is pretty decent. It used to move the Tahoe around pretty quick, as of lately it is getting sluggish though, so I'll have to fix that :D As for the pistons, I will have to look into them some more, they are great but in a link provided it states they are for 67-97. I think it is deck clearance that is different. I will have to do some research.

Re: Turbo Tahoe Worklog
 

Well ---- nugget, I just did a quick search and turns out the heads are 64CC, so those pistons won't give me the CR I need anywhoo. I'll have to keep looking or switch heads if pistons are gonna cost too much. I'll look up how much volume I could make up with a thivcker gasket as well.

Re: Turbo Tahoe Worklog
 

This thread is ------dom. Dont start a thread until you know what the ---- your doing :l :1


http://www.turbomustangs.com/turbotech/diag2.jpg

and what kind of horse ---- is that diagram... What retard drew that. He has the entry of the turbo used for where the downpipe is. And the exaust blowing out the entry then going into twins. hahahahahahahahaha :3

Re: Turbo Tahoe Worklog
 

Haha, I didn't notice that. And I feel confident that I know what to do at this stage in my project. Nothing else I can do though besides read the books I have right now and go through others projects...

Anyways, the diagram was not to show how I plan on running my turbo, it was to show the basic idea of how I am going to route the DS exhaust and create a single manifold for the turbine.

Similar idea to this
http://img142.imageshack.us/img142/4...rdesign7ct.jpg