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Would a T3/To4b be all that bad???
#1

From a "I'm a cheap ass on the turboford board standpoint" would a To4b v-1 be that bad of an upgrade? I can get all the parts and have it balanced for around $250.00 Would any of the other tob4 trim be a better choice? I now the B stuff is older and not as good as the E series. But the prices are just about half on parts and the extra money can go to the better rods.

I would like to get a nice to4e from the GP but money just won't allow it, and I imagine (or hope) the hp differnce would be very little. I have looked at the compressor charts and nothing looks perfect. I plan on running around 28-30# of boost and making 350+ hp(the more the better) at the flywheel.

Thanks
Randy


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87 Mustang coupe 3100# with me in it
Stock bottom end, home ported head, with stock valves, home ported lower, gutted upper, home ported E6, single 3" exhaust, Ranger cam--retarded 4 degrees, 255 intank with #6 lines, Aeroquipe FP regulator, la3, k&n, 87 tc 5-speed with 8.8 and 3.55's, stock 86 TC 5-speed turbo running 20#, starion front mount IC, underdrive pulley, msd Digital 6 - only help with the launch, 6*10.5*15 E.T. streets
Best on motor
1/8th 8.10 @85mph
1/4 12.79 @105.64mph
Best on NX 50-shot
7.70@ 90mph
12.12 @ 113

[This message has been edited by Randy (edited 11-30-2001).]
85 2.3turbo Rx7
10.88@125.6-no nitrous yet Smile
Dead and crushed Sad

82 Toyota Starlet KP61
pushrod 4cyl
10.47@135 on dots
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#2

try turboalpine - he is GREAT with there questions because he has tried alot of different turbo combinations.

personally i would say that a proper To4B will get you 90-95% of the performance of a To4E...

yes the E is better but just a T3/T4 is going to be a big jump in performance compared to a T3 - the To4E is just a little more advance and closer to ideal - but a B series would still get the job done.

"cheap is a quality overcoming many faults!"

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http://loki.stockton.edu/~stk4871/ --> ***Webpage newly UPDATED - carnage pictures, plan and progress notes, and new Mustang and Bronco II pictures!***

87 Notchback, Grenaded 87 TC motor
**Best Time: 13.7 @ 97mph with a 1.88 60 ft. time**

Preparing for Class 1: Stock Comp. - Join in the Fun!

TurboNotch in development - pending 2002 graduation.
6 point roll cage required for an 11.99 run? - perhaps...
Hardcore wheels up launches with a stock motor? - definitely...
Living isnt to arrive at the grave safely in a well preserved body, but rather skid in sideways, totally worn out, shouting 'holy sh**, what a ride!'
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#3

The main difference is going to be in cost. If you want 350hp, you're going to have to spend a lot more money anyway though. The extra 5-10% might be less or more depending on your setup.
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#4

Randy
I have used the TO4BV1. The first one I left the turbine side stock and found it a little slow to spool. The stock T3 turbine just does not has the leverage to spool the V1 up. Then I had the stage three turbine wheel added with the stock .48, and wow what a difference. If you do get the V1 get the stage three turbine.

RS
Randy
86 XR4Ti
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#5

I would like to do something to the exhaust side, but that starts to kill the budget idea.
I would like to keep the rpms at a max of 6800. Plus this is mainly going to be drag raced, so the rpms shouldn't ever drop to low and I will be leaving on boost.

Later
Randy
85 2.3turbo Rx7
10.88@125.6-no nitrous yet Smile
Dead and crushed Sad

82 Toyota Starlet KP61
pushrod 4cyl
10.47@135 on dots
Reply
#6

You also have laughing gas too, right? Spooling up shouldn`t be a problem or am I not considering something?
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#7

I would agree with Greg, any T4 compressor wheel is an upgrade from the T3's. I'm not sure about the other TO4 wheels, but the turbo I currently run has the TO4-V trim compressor wheel in it. The turbo was originally built with a stock T3 turbine wheel (.63) that was clipped 7 degrees (I think that would reduce leverage??), to increase cfm. That setup worked great for drag racing in my car...lag was minimal, and the car ran a best of 12.18 @ 110.32 (about 350 hp) with it, launching with about 6-8 psi and running 19 psi.
My concern would be running 28-30# of boost. That would probably be an issue because of the heat generated at that level of boost...optimum intercooling will be crucial...not sure if it would make more power than say 22 or so with that compressor wheel. The "sweet spot" with mine was at 19 psi (with air-to-ice water i/c), and the car didn't run quicker with more boost until I stepped the turbine side up to a Stage II wheel. So far with that setup it has picked up 50 more hp (400+), with 21 psi, and I'm still running that TO4-V trim compressor....I say it's a great upgrade...why spend more when you don't need to? I'd save the money, run stock rods, and go just as fast with the $$$ in pocket!...Although the rods may be a good idea if you're sprayin' on top of 28-30 psi!!! Jim
84 GT Turbo convertible
86 Saleen #138
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#8

This is the same turbo t4b/t3 .48housing I have been thinking about using. I can get one for around $250 also. What dou you guys think it would be worth HP wise over my .63 t-3? at 24psi or more? thanks
shawn

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My vehicle
1983 Turbo Coupe with a GN intercooler, dawes device set at 22psi of boost,K&N cone,fully ported e-6 manifold,gutted and ported intake, ported stock valve head, Ranger cam set -2 deg, and Full 3" exhaust with 3" magnaflow, 190 pump, a TRI AX shifter,Madhatter clutch quadrant,Racer walsh adjusatble cam pulley large VAM, LA3, brown tops, and 88 TC wheels. Next mods, boxed control arms, Subframe connectors, 3.73 8.8 rear,Larger front brakes, and poly bushings. Then i have no ideaSmile
has run a best of 14.71 at 92mph on drag radials. New times with GN intercooler, LA3, brown tops!!!! 14.9 at 96mph on my street tires.
New times with head ,e6 and ported intake, 100 race fuel, and 28psi 13.83 at 103mph!
2000 jeep GC
1979 mustang notch
84 ranger 351w
1998 contour svt
3tc powered sandrail.
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