Twin Turbo SHO

[bamptron]

my current SHO 3.0 is on it's way out, i'm ordering one of the bored out 3.2L motors from ford performance specialists in atlanta. i'm planning on twin turboing this motor, but i'm not sure what all i'll need to have done in order for the car to not fall apart once it's running 30-35 lbs of boost. i know i need to reinforce strut towers, i also need to have the trans reinforced or replaced but i don't know where or how to do this. the new motor will have reinforced rings, and forged pistons and i'm probably going to have them replace the heads and intake valves as well since one of my current valves is tapping. i'm at a stage 2 clutch right now but i'm thinking of goingt to a stage 4. I talked to a fellow i know at a performance shop and he said if everything is done right i should be sitting somwhere bewtween 500 and 600 hp depending on how much boost i run. i'm sure i'm overlooking a lot of things, and any suggestions or help is greatly appreciated.

1992 SHO MTX Red
Cold Air Intake
Big Bore Butterfly valves
Aluminum Flywheel
Stage 2 Clutchmasters Clutch
Full Custom True Dual Exhaust with MagnaFlow mufflers
Koni Adjustable Struts
CF Hood Red and Black weave

 

[Ryan]

Stick with Doug on this. He's the man to do this for you. I don't think anyone has successfully a ctually TT a SHO yet in the Taurus...

 

[Hamburglar]

no twin turbos that i've heard of, but there are single turbo SHO's

 

[BuckChoklit]

Engine
- For 30-35# of boost, ported heads with big valves
- Lower compression forged pistons (9.8:1 Stock)
-Extrued Honed Intake
- Custom Exhaust Manifolds
- twEECer (to tune the engine)
- Huge injectors (around 52#?)
- 255 lph Fuel Pump
- Adjustable Fuel Pressure Regulator

Transmission
- Quaife ATB
- Reinforced gearset ($6-7,000)
- If that option falls thru, shotpeened gears
- Stage 5+ Axles
- One hell of a clutch

Suspension
- Aluminum Subframe Bushings
- Solid Motor Mounts
- Upgraded struts/springs
- 96 SHO Brake upgrade kit

I know I'm forgetting some things, anyone want to add anything else? For the transmission and engine stuff, you'll want to deal mostly with www.shonutperformance.com and http://www.shobrosgarage.com/ I know the fuel rails have to be modified to fit bigger injectors but it really isnt a big deal. You'll be making more than 500-600 hp if you really are pushing 30-35# of boost. If you have any SHO specific questions, go to www.shoforum.com they have a wealth of knowledge.

There is a guy on SHOForum with a full out race SHO engine, supercharged pushing around (a guesstimate) 20 pounds of boost and making 650hp.

They do have TT SHO engines, but they are in sand rails and whatnot.

 

[ez112]

There is a guy on SHOForum with a full out race SHO engine, supercharged pushing around (a guesstimate) 20 pounds of boost and making 650hp.

And will barely make 12's :fart:

J/K I'm not starting a flame war, but man I torque is so important in a 1/4. Not sure if that 650HP guy likes the strip, most don't, but I wouldn't want to try and launch that. Hell I have fun trying to launch my MTX now. (fidanza doesn't help )

If I was to build up a SHO, I would stick with a bulletproof automatic.

 

[melectrok]

If I was to build up a SHO, I would stick with a bulletproof automatic.

The SHO auto is by no means bulletproof. Even a blank can blow that up.

 

[BuckChoklit]

And will barely make 12's :fart:

J/K I'm not starting a flame war, but man I torque is so important in a 1/4. Not sure if that 650HP guy likes the strip, most don't, but I wouldn't want to try and launch that. Hell I have fun trying to launch my MTX now. (fidanza doesn't help )

If I was to build up a SHO, I would stick with a bulletproof automatic.

He's a road course guy. He laps Porches and Ferraris all day. :beer: But if you want a bulletproof ATX, Doug Lewis is your man.

 

[bamptron]

do you know if i'd have to make it sequential twin or is it possible to split them.

oh yea, and i'd think you could run 10's but you'd have to have the preload just about perfect. i know now i can run mid 14's if i preload to about 3. but that's like, a really really good run.nothing special, but it's not bad for that's been done to the car. definately need some really really grippy tires though too in order to break into the 10's. but it doesn't really matter because i'm not into the 1/4 thing too much. anyone can go straight. i'm more into like, hill climbs and stuff. but i'm actually going to build me up a 240sx with an sr20 DET motor in it to do that. the TT is eventually just going to be a show car for the most part. my interior is cherry still and i do'nt plan on dumping it out or anything.

 

[6SpeedLover]

The SHO auto is by no means bulletproof. Even a blank can blow that up.

:lol: :lol: That is the 100% truth, I was working for Ford when the first auto SHO came out. The owner got a beatiful Blue one for a Demo, he had me take it to remove all the plastic, wash, and fuel it for him. This car had 6 miles on it, long story short. I was sitting at Red-Light, just putsing around, it was in drive and I had my foot on the brake, and I was giving it some gas (just to be funny). Next thing I felt was plunk!!!! I was 4 blocks from the Dealer ship, it had to be Towed back to the shop, the Tech. told me that the Tranny was Totally destroyed (LMAO) This story is true as the day is long.. I had to lie to the owner, to protect my job. I told him, when the light turned green I gave it gas, and I wasnt in D all the way, so I put it in D with the rpm's up.. (they believed me) Had to share with ya,, thnx guys.. BTW good luck with your TT SHO (it can happen)

 

[SHOspeedProject]

IMO, stick with a single. I really can not think of one reason why a twin would be better than a single turbo. But a single will be 1:easier to plumb and 2:less expensive, ESPECIALLY if you seriously want 30+psi, finding two turbo's that can routinely and reliably handle that boost will cost you a penny or two.

FWIW, my car (pictured above, before I owned it) made over 500hp @ less than 13lbs on the small T3/4. The new setup (almost totally redone, only reusing the plumbing), a 62-1 @ 18+psi, makes a lot more. Contact me if you are intersted in the car.

 

[ez112]

Ok appearantly EVERYONE took what I said out of context.

I said I would GET A bulletproof auto. I know SHO's, I OWN a SHO, and I know the AXOD /(other various names it has) is not suited for the SHO from the factory.

Ford Performance Specialists has build ones for a pretty penny

http://fordspecialists.com/SHO transmission.htm

As far as the 10's goes, I have never seen a SHO run an 11, let alone a 10 so I think it would be great if you would SHO ( ) everyone what the Yamaha can do.

 

[yamahaSHO]

I don't think a SHO motor will handle 30-30lbs of boost in any form. You can get over 500hp on 15 PSI and adequate charge cooling.

As for the 650hp SHO that barely sees 12's (torque is not the problem, traction and breaking things is)..... He sees 12's, but at 5,800 ft above sea level (here's your NHRA correction factor - .9520). In addition, he does not launch the car, nor does he shift very quickly. I think he was on street tires on all his runs too. As far as what the car is built for... yes, it is a road course car, but he'll have fun with it where he can. The car is running less than 20 PSI. Vadim said it hit 17 PSI, but the most we've seen is 13 PSI on a fully built motor (breaths better lowering boost readings). He's running the same 3.33" pulley his 15 PSI (@ 7k RPM) SHO is using (race motor sees 8,500 RPM on a regular basis).

Suspension
- Aluminum Subframe Bushings
- Solid Motor Mounts
- Upgraded struts/springs
- 96 SHO Brake upgrade kit

No boosted SHO owner should ever consider '96 brakes as a sufficient upgrade.... Cobra brakes at a MINIMUM!

 

[BuckChoklit]

No boosted SHO owner should ever consider '96 brakes as a sufficient upgrade.... Cobra brakes at a MINIMUM!

I was giving him a rough guess at what it would take. Chill. oke:

 

[bamptron]

well, the idea was that a twin would be rare as hell, adding to the whole show car thing, but if you're pulling over 500hp with just 13 lbs on a t3/4 then it's probably a better idea to just single turbo the car. especially since like you said, it'll cost a LOT less. thanks a lot to everyone who's posted any input on this matter.

 

[SHOspeedProject]

I don't think a SHO motor will handle 30-30lbs of boost in any form.

The Yamaha is very robust, why would you think it can not handle 30psi? Lesser engines do so every day. I will not ever push it that high, but it will see 20+psi for sure.

No boosted SHO owner should ever consider '96 brakes as a sufficient upgrade.... Cobra brakes at a MINIMUM!

HEHE, when I bought the turbo it had the STOCK 90 brakes on it! I upgraded immediately! Initially the 96 upgrade, which stops just as well as the Cobra brakes, assuming pad choice is the same. The benefit of the Cobra's is that you can stop more than once! Now I have the 13s' in front, 11.6 out rear.

TT

 

[yamahaSHO]

The Yamaha is very robust, why would you think it can not handle 30psi? Lesser engines do so every day. I will not ever push it that high, but it will see 20+psi for sure.

Boost is just a measurement of intake restriction.... Most of those smaller motors pushing 30 PSI are still only making 300 hp. Yes, the SHO motor is very strong, however, are you willing to up your boost to 30 PSI this year?

HEHE, when I bought the turbo it had the STOCK 90 brakes on it! I upgraded immediately! Initially the 96 upgrade, which stops just as well as the Cobra brakes, assuming pad choice is the same. The benefit of the Cobra's is that you can stop more than once! Now I have the 13s' in front, 11.6 out rear.

TT

13/11.6 is also what I run. From 80+, my '96 brakes could not stop the same as my current setup.

 

[SHOspeedProject]

Boost is just a measurement of intake restriction....

On oversimplification of things, but I will run with it. So again, why would the SHO not handle 30psi?

 

[yamahaSHO]

SHO Boom... If you want to prove me wrong, by all means.....

 

[6SpeedLover]

well, the idea was that a twin would be rare as hell, adding to the whole show car thing, but if you're pulling over 500hp with just 13 lbs on a t3/4 then it's probably a better idea to just single turbo the car. especially since like you said, it'll cost a LOT less. thanks a lot to everyone who's posted any input on this matter.

It would be rare, and fast. Hope it all happens. Btw, what part of Pa you from??? If im close I would like to check out this Project (if its cool)..

 

[bamptron]

i live in the suburbs of reading. exeter township to be exact. but the project isn't going to be getting really underway until next summer as i am leaving in august for school in arizona and won't have time to work on the car until i'm back.