1949 sho

[DJSHO91]

Ok, I'll check that. Here she is all cleaned up and ready to roll; taking it to a couple of local shows this weekend.

Love the sleeper look! It definately will sound better than that old flat head. Great job, can't wait to see it on the road.

 

[Falconvan]

It could be due to the checkvalve in the pump leaking, or it could be due to an injector leaking. So the remedy depends on the cause.

Also, be aware that if you have had the battery disconnected and have not run the engine much, the pcm has not "learned" what the proper base pulsewidth is that is needed for the iac. So, if the iac takes quite a bit more pulsewidth than the pcm's guess to make the engine idle, it will not want to run at cold start. The only solution for this is to let the pcm "learn" over time. I had one iac that was off enough that it would take a week for the car to start and idle right each time that the battery was disconnected. I finally tossed the iac and got another one because it was so annoying.

This makes a lot of sense; I just started putting miles on the car in the last few days. Once it starts, it's running and idling fine. I'll give it some time and see how things progress. Took it to two shows yesterday and had a lot of people trying to figure out what was under the hood.

 

[Falconvan]

Well, it's been a month and most issues seem to have worked themselves out. I think with repeatedly hooking and unhooking the battery the EEC never got a chance to settle down. Fires right up and runs great now. I appreciate everyones help; I wouldnt have gotten this thing going without this website.

 

[Off Road SHO]

Well, it's been a month and most issues seem to have worked themselves out. I think with repeatedly hooking and unhooking the battery the EEC never got a chance to settle down. Fires right up and runs great now. I appreciate everyones help; I wouldnt have gotten this thing going without this website.

Anytime. Post pics.

Tom

 

[adidas_kn]

Anyy driving videos from the inside and outside? how well does that engine move that car? What gear ratio do you have in the rear end?

 

[Falconvan]

Anyy driving videos from the inside and outside? how well does that engine move that car? What gear ratio do you have in the rear end?

My daughter posted a couple of videos on Facebook; I'll look for a link. I've got 3:73 gears and it moves really well. The car is actually 500 lbs lighter than the Taurus it was in.

I took the longest trip in it yet last weekend; we drove it to a car show about 45 minutes away. It did great both ways. Im getting lots of head scratchers trying to figure out what the engine is! I had one young guy say that it looked a lot like the engine on his Yamaha; closest one yet.

 

[Falconvan]

Hey all, I've got an exhaust question. After running the duals all summer I decided I did not like the sound. At idle it sounds good but at highway speeds the glass packs are annoyingly high pitched plus with the exhaust exiting in front of the rear wheels, it seems like it's right by my ear. So I'm thinking of building a y pipe and taking it to a single muffler and then all the way out the back. You can't really do dual pipes out the back of these cars as the fuel tank is offset to one side and the spare tire well hangs down on the other side leaving just enough room for a single exhaust pipe to go between them. I figure with a V6 this size, a 2 1/2" single exhaust with a free flowing muffler should be plenty big without causing any restriction issues. What do you guys think? Isn't the stock exhaust on the SHO a 2 1/2" pipe?

 

[Off Road SHO]

The best exhaust I ever heard on an SHO motor was in a buggy that belongs to my friend Clay. Duals with no crossover pipe and big ass Flow Masters, one per side. If you can fit a resonator in under there and a big FlowMaster, I think you will be very happy with the sound. 2" should be more than enough if you keep the two legs of the "Y" near equal in length so that you don't stack pulses.

Tom

 

[Falconvan]

The best exhaust I ever heard on an SHO motor was in a buggy that belongs to my friend Clay. Duals with no crossover pipe and big ass Flow Masters, one per side. If you can fit a resonator in under there and a big FlowMaster, I think you will be very happy with the sound. 2" should be more than enough if you keep the two legs of the "Y" near equal in length so that you don't stack pulses.

Tom

Thanks, Tom. I've got 2 1/4" pipes coming off the headers so I thought I'd make an equal length y that takes the two 2 1/4"s into a single 2 1/2" , then to a Magnaflow or Flowmaster, and out the back with a resonator before the outlet. I was going to do 2 1/2" since I already have several 2 1/2" bends and straight pipe from a previous project. Do you think that the stock engine wil breathe well enough with that?

 

[rubydist]

that should be fine. I would try it with the biggest Flowmaster you can fit and without the resonator first - you can always add that if you want to change the tone. I think I would get a dual in / single out muffler so you combine the flows in the Flowmaster itself.

(crossover pipe does nothing for an even-firing engine like the V6 SHO, they are for dual-plane crank V8s.)

 

[Falconvan]

Sounds good, I appreciate the suggestions from you both.

 

[Falconvan]

I finished my exhaust and took it for a ride; it sounds sooo much better. It doesn't sound so much like a rice rocket without a muffler now. You can actually hear the radio and carry on a conversation but has just enough rumble to sound respectable. Power feels the same; dont think I lost anything going to a single pipe.

 

[Off Road SHO]

Looking good. Can you post a sound clip?

 

[Falconvan]

Sure, here you go

https://www.youtube.com/watch?v=ddhPszMno0k

 

[Off Road SHO]

Nice. You can't hear any raspiness at all. Good job. Can you post the muffler number in case we need it for future projects?

Tom

 

[Falconvan]

Thanks, Tom. I think I pitched the box. It's a Thrush turbo muffler from O'Rieley's; $32.99.

 

[Off Road SHO]

Wow, that is impressive sound for 33.00 bucks.. Have you tried it at full throttle yet?

Tom

 

[Falconvan]

Yep, sounds good and pulls good when the secondaries hit.

 

[Falconvan]

I've got one issue to work out and that is a high cold idle speed (2000 rpm). It takes a really long time to come out of cold idle and when it does it idles great right around 800 rpm. I tried a new IAC and looking for vacuum leaks, still the same issue. What I/Os on the EEC determine cold idle? Is the coolant temp the only input that plays a part?

 

[Off Road SHO]

Falconvan,

On the 94 3.0 and 3.2, the return signal from the ECT sensor is on pin 7 , a light green with red stripe wire. The feed wire, which feeds a lot of other things is a grey with red strip wire that originates from pin 46 of the PCM. And just in case you didn't know, the Intake Air Temperature Sensor located in the air filter housing, gets the same grey with red stripe feed and returns its signal to the PCM on pin 25 via a solid grey wire.

I don't have my Gen 1 EVTM's handy so I don't know if those two sensors report back on different pins on the early model 3.0's.

Tom