new guy needs help "not a dictionary"

[Anonymous]

wood like to build a turbo 250. I know nothing about turbos. I would like to know how much hp Kelly's falcon makes; i have a maverick, built a 289 for it that runs low 13.40s, and I had a falcon v8 car, but i want something different and fast..... Please help

 

[Inline6Merc]

Here are Kelly's dyno reading before and after the new head swap.
Classic Inline cylinder head results:
Run #1: Peak HP = 323@4500rpm, Peak torque=480@2750rpm.
Run #2: Peak HP = 318@4700rpm, Peak Torque = 502@2650rpm.

between the two pulls was reduce the timing retard .25 degrees/lb of boost.

USA integral log cylinder head results:
Run #1: Peak HP=283@4800rpm, Peak Torque=416@2700rpm
Run #2: Peak HP=270@4800rpm, Peak Torque=437@2575rpm.

The result on the top are from the new alluminum Classic Inline cylinder head and the bottom results are from regular US 250 head. To learn more about turbos and how well the can function on our sixes read the stickys at the top. Can you give some specs on what you have or plane on running and what your goal is? hopefully youll turn from those bent eight engines and get inline!

-curtis

 

[Bort62]

When your spelling and grammar is as poor as yours is, it makes it difficult for anyone to understand what you are even trying to ask.

Spend a little time making sure your question (and how you present it) is clear, and you will get a much more positive response.

 

[Anonymous]

I have a 200 from 1971 and a 250 from 1978. The turbo I have is a Garrett .43 P/N 452083-1S C/N 9146051 it is off a 2.3 Audi.

 

[Bort62]

Is that .43 intake or exhaust?

 

[Anonymous]

BORT62 I'm sorry I thank we got off on the wrong foot.

 

[Anonymous]

Im sure the compressor as B.C.1 M27 A/R .43

 

[Anonymous]

Im not. Sure the compressor as B.C.1 M27 A/R .43 "I dont know much about turbos"

 

[Bort62]

Well, I'm not sure exactly what your question is. Will it work? Fundamentally - yes. If you hook that turbo up it will spin and produce boost.

Will it work well? That really depends on a lot of information that you aren't giving us and I would guess don't really know.

You need to get a lot more familiar with how a turbo works and why it does or else no-one here is going to be able to help you.

The only thing I can tell you is that if you weld that turbo on and go, It will do something.

Is English your second language?

 

[Anonymous]

Have you had the chance to read the FAQ above?

Also read the turbo section on wikipedia

 

[Anonymous]

When using a turbo what is the preferred method for carborating? Is there a special carborator needed? It seems to me a regular carborator would have to be hooked to the inlet of the turbo in order to function correctly.

Will stock cast pistons work with the turbo chargers boost?

If not, where can one locate forged pistons?

How do you supply oil for the turbo charger? I was thinking about the port for the oil psi sending unit but have concerns about just dumping that through the turbo loosing to much oil pressure for the engine. Is a restrictor needed or is it better to get the oil supply elsewhere?

I have purchased a turbo removed from a 2.3 Audi I intend to use on my ford. I see the number .43 forged into the casting on the compressor side. Do you know what that represents?

 

[Bort62]

What that most likely represents is the compressor side A/R.

Thats relatively unimportant compared to the turbine side A/R, which will effect how rapidly you build boost (and when it flatlines)

A turbo for a 2.3L will most likely be a little small and spool really rapidly. It will give you good throttle response but really run out of breath at higher RPM.

You can use just about any carb as long as you prep it properly.

You really need to do some reading online about different turbo setups and how they work. I (or anyone else) don't really want to sit here and type out what has been typed a million times already.

 

[wallaka]

What he said. And try not to take it the wrong way, you have to do some learning yourself. We'll happily point you in the right direction but won't hold your hand.

 

[Anonymous]

A/R .43 exhaust A/R .95 you say its to small? How much boost do you think I need--> I want a 13-14 second 1/4 mile.will this do it on a .030 over 250ci i6 ford with a 220 224 duration @.050. The static compression is 8.5:1. The car weighs about 2500 lbs. 3.80 gears with a c-4 transmission and a 2500 stall and street tires.

 

[Anonymous]

thanks

 

[Bort62]

It will probably get you there if you can get the rest of it right. But then again, getting a 2500 lb car w/ 3.80 gears into the 14's doesn't take much.



.95 exhaust A/R - how did you figure that out?

 

[wallaka]

Hmm. Looks like Saabs came with either a small T3 turbo or a large T25, depending on the year.

These are both relatively small turbochargers. I'd say that full boost should be made under 2500 rpm. Search for posts by hasa68mustang, your results should be somewhat similar. I really, really doubt the exhaust A/R is .95. It's probably around a .63 like a Turbocoupe or Buick GN.

 

[XPC66]

Probably a TB2559, which is a fairly old unit ~ 13 years. This is rated a 0.49 A/R for the turbine housing and 0.43 A/R for the compressor housing.

Compressor trim 55, 5 blade, major 54mm, minor (inducer) 39.65mm, tip height 5.1mm.

Turbine trim 61, major 53mm, minor (exducer) 41.5mm


The max flow with a 60 trim compressor is 405 cfm . You have a 55 trim which means its going to be about 55/60 = 371 cfm (175 l/s). Nominal is this



So there you go, no reason for not getting the answers you seek now.

 

[Anonymous]

Ok, I have looked at some turbo sites. the turbo I have is a m27 Garrett its small. and now i know it. so were do you guys git your turbos of of?

 

[Anonymous]

THAT I DOT HAVE TO GIVE MY RIGHT NUT FOR Im only 23 years old