Read for easy turbo

[dohcfiend]

let's say i knew some1 who was willing to try this, what kind of turbo would i need and what car would i find it in?

[Doubt_Incarnate]

Consider the fact that the whole exhaust system would be under alot more pressure than it was before. isnt it like twice the boost pressure? than means your gaskets from the manifolds to the turbo are going to get like 3 times the normal stress, and some are ment to allow for the motor movment.
and now the heat build up is going to effect the entire thing more than ever so when expansion happens things are going to move alot more than a conventional turbo setup.
besides, some chump might see the turbo under your bumper and just unbolt it and run off.

[oil pan 4]

You need some thing with a small turbine houseing.

[dohcfiend]

what you said "You need some thing with a small turbine houseing". What i heard blahblahblah blah blahblah. forgive my turbo illeteracy i am looking for a specific make and model of donor car/truck. doesn't have to be perfect, just what is the closest thing you would try?

[Doubt_Incarnate]

most production turbo cars were 4cyl. because it was cheaper to turbo small motors because small turbos were cheaper. The infamous Grand National was a 3.8OHV turbo, so its turbo should be good for your 3.4DOHC.

[Grim[Z34]]

I dont think I would use it..but thats IMO

[Froggx]

yeah, if you're sticking a turbo in the rear, you'd want a nice small A/R, grand national turbo would prolly never spool decently, get a turbo off like a Volvo 850 or S70 T-5, nice small mitsu TD-04 turbine from a 2.3L engine, would prolly spool quickly even with such a disadvantaged setup as the turbo in the trunk, or even better, try and do a real turbo setup...

you are aware, you can't just weld up the turbo and charge pipes and stuff, you have to do some work with the ecm and such, unless it's a MAF setup and you only put in like 4 psi

[dohcfiend]

i am aware of the tuning requirements as well as boost management. i just don't know about turbo sizing that is why i was asking about what make and model cars to find a turbo in. this will be a long term project, i have some other things going on as of now. right now i am just collecting info and i probably will end up getting a book on turbos sometime to make an attempt to inform myself as well.

i have a SFI MAF setup right now.

[Froggx]

sizing turbos really isn't that hard, you just have to look and see what manufacturers put on a car with the same displacement as yours, then bump that up a few sizes as manufactures generally assume everyone loves low end torque and hates top end power... with the rear mount the manufacturer stock turbo would probably be perfect... actually, the turbo from the nissan 300zx single turbo might be great for this kind of thing, it was called "sort of small" from the factory, maybe going up a size from that or picking up a toyota CT-26 with a clipped wheel would be great

[dohcfiend]

what do you guys think of this turbo?

Master Power t3/t4 turbo - 57 trim, 50ar cold, 83 ar hot - $150 + shipping(will need to use a oil restrictor vavle or the oil pressure will blow past the seals)

[Froggx]

if it's new I'd say send it to me

[dohcfiend]

would that be about the right size for my future application?

[dohcfiend]

would that be about the right size for my future application?

[Froggx]

yeah, that would be in the neighborhood of what you want, might come down on the hot side a/r one step and the compressor trim one step to help spool time since I doubt this is a balls to the wall max effort kind of thing, if you were putting that in the location that most turbos go, I'd probably give it a big thumbs up unless there is something about it I can't tell, but I can guess at what you didn't say there, I'm no expert on remote turbos, so I'm really not sure if you'd have to come down any in size or not to help spool time, that turbo should support a lot of boost though, maybe more than you need even, I probably should not be typing this with so little sleep in me someone else feel free to chime in until I wake up and make sense of this ramble

[dohcfiend]

i figure i am looking for whatever stock for most cars are. 9-10 or less lbs? i really don't want to boost it much until i get an ignition controller b/c of n/a timing and current compression. but that is why they make boost controllers huh?