Anyone recognize this turbo?

  • Thread starter Thread starter Anonymous
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That is a very similar design to the Buick 3.8 turbo that I have, but mine isn't water cooled.
 
Might need new glasses but don't see water cooling. There oil connections for the center bearing and pressure line for waste gate operation ???????????
 
Does10s":3ltz5mvq said:
For 300 cid you'd better get two!
Will
Click to expand...

So would a turbo with a larger turbine housing, maybe 1.15, be a better fit for a 300?
 
hmm...ok..well...everytime i match a compressor map to a 300 it gives me a coice no bigger than a T3 unless you wanna turn 6000 RPM out of it...and i dont think many 300's even like to go past 4500...unless its built for it...so what do you think constitutes for using a T4 instead of a T3...Im realistically looking at 300 horsepower...nothing gigantic and expensive like...I do have a T04B off a DT 466 that has a 1.15 turbine and .60 compressor....now is that too big for a moderate street engine?....Im trying to look as specs and calculations and everything tells me no bigger than a T3 with a super 60 trim and .82 to 1.06 turbine....and .60 trim compressor....

i know the 300 is displacement..but it is also slower in RPM...which has alot to do with the amount of air demanded. You can have a 3.0 liter V6 spin 6000 RPM....or a 5.0 liter inline 6 spin 4500...

Unfortunately..i dont not have a very accessible tach on my truck...which leaves me in the dark as to how the RPM ranges according to speed and engine load. Maybe il have to rethink....tell me what you think.....
 
Not sure on the Turbo, but put a tach in...not that hard and with the amount of veriety, you could find one that looks kool too.
Matt
 
I do need to put a tach in..i have a digital display that shows RPM for my computer, but its a scrolling view and not accurate...i will be doing this when i install a pyro, boost, and fuel pressure gauges...

One other thing on the turbo...what do you think the difference is between a 300 in 4x4 truck compared to a 200 or 250 in a stret race mustang?....just another thought..well see how things come along..i may change my mind...

Adam
 
well most the 200 guys aren't spinning high as 4500 I think. I know I'm not. I am using the same sized turbo as import killer .63/.60 T3. I am looking at prob a max of 10 psi.

how much boost were you planning on for the 300?

I guess a T3 would be fine if you are only wanting 5psi
 
A TO4 with a wheel size of 58 to 64mm with a turbine housing of .69 A/R.
It'll spool fast and provide enough CFM to match the cubes.
Will
 
i originally planned on a TO4. Maybe the problem lies in my little turbo calc deal thing that seems pretty accurate. Its the one from Ray Hall turbocharging. According to all the input i enter ito it at a max of 4500 RPM it suggests a T3 with a 60 trim. I just dont want to go too big and start surging. I remember either Stranger Ranger of Frechtown Flyer suggested a T3 wit ha super 60 trim at one time...

i think it was one of those guys..but not possitive.someone who is very regular on this forum.

When comparing to the huge turbos that they put on those little 4 cylinders, you would think 300ci would need something much larger. It only makes sense..although the VE of the engine ma be lower. I am running an intercooler that came off an International truck with a 365ci 6.0L. It should be fairly efficient considering they are usng it wth te VGT turbo. I dont know the efficiency.

By what you said 62fairlane170, I may only be able to run 5 psi..when i want to run 10 psi.

This truck will be a towing/cruising and daily driver..im not looking at any racing..just some good solid acceleration and high torque with higher RPMs.
 
here is a nice turbo calculator to play with.
http://not2fast.wryday.com/turbo/glossa ... c.shtml#af

I agree that a t3-60 is too small for anything but a stock 300-6, a small T04-B will fully spool up by 2000rpm and be plenty strong for 10-12psi later on if you so choose, a T3-60 starts to run out of effecent range at around 4000rpm@7psi on a 300cid motor.
 
A TO-4 might be just the ticket for a street driven 300. you still have to match the characteristics of the cam. Even with a turbo, the rpm range on the stock cam is limited. An upper limit of 4500 rpm and 6-8 lbs of boost it enough to make repsctable numbers and might even boost mpg at the same time.
 
well..after some thinking and a little crash course in Corky Bell's book....I think a TO4 turbo will be my best bet for higher power and beter drivability. It will create less heat..create less exhaust back presssure and consequently make more power in the midrange and towards the upper end of the RPM limit...like when your late to work or something... :lol:

With a 300..the naturally aspirated low end torque produced is well enough to achieve a desired boost pressure at a higher RPM...giving you a smooth power flow from low RPM to high RPM.

I had read Bells book on this befroe..but it waskinda faded...had to rejog the memory as to how and waht works when and where its supposed to.

Thank you much,
Adam
 
why dont you try a CT-26 turbo. mk3 supras had them and they are 3 liter cars. they should support like 300hp since stock 7mgte's made like 250hp. just and idea since they can be had for little money.
 
ive picked out a TO4 with a slightly bigger turbine housing...going to see how it works...its a .96 A/R P trim. If it doesnt, then illl change it to a smaller one.

Im shooting for 350 HP. still in the process of lining all the parts out and geting them organized in my brain onto the truck. Getting the block bored .030 with Hypereutectic pistons, ARP head studs and rod bolts, new bearings and freeze plugs etc. Need to install my EDIS components, figure out a head (might get a little spendy), and look for some electric fans to fit on my radiator.

I think i will get a wideband AF controller or gauge or whatever it takes for some ease in tuning. THe exaust will be my largest obstale to leap over. i want to go stainless steel for longevity and strength, so a lot of tedious timly hours will go into that.
 
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