Skip to main content ↑ ↓
Topic: 88 sport rebuild , need advice (Read 27368 times) previous topic - next topic

88 sport rebuild , need advice

Reply #210 –
You'll want them in the pipes.  You can't just tie them back.  At the very least get some nuts from the hardware store in the same thread as the o2's, cut holes in an opportune position below the headers and weld the nuts on.  Then you can mount the o2's.  This won't guarantee that you get in the exhaust stream correctly, but it's worked for me on other cars in the past.  It depends on how finicky this car is.

88 sport rebuild , need advice

Reply #211 –
ok,, got it.

88 sport rebuild , need advice

Reply #212 –
I wouldn't be bothered by leaving them unplugged and not hanging temporary. but the car will run richer and get worse gas mileage. if he has a bit of a drive, its not hard to mount them.
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com

88 sport rebuild , need advice

Reply #213 –
Quote from: jcassity;420621
question,,
#2
I now have GT40 heads with no pipe along the rear of the heads,, i guess this is internal EGR.  When running the motor, i see no EGR movement at all and would like to know if there is something i need to worry about or let it just sit there not moving and call it good.  with external EGR on the old heads, the egr moved ,,im sure now i am dumping an egr code,,, opinions?


Actually the EGR works the same as it did before. The intake you have is an internal EGR intake, just like the stock one. The GT40/GT40P heads all have the EGR passage just like every other stock head. The tubes running to the back of the heads are for the Thermactor system. They have nothing to do with the EGR. For instance on my Thunderbird (since it has no cats) I removed the smog pump, thermactor tubing, and the TAB and TAD solenoids without issue. I'm still running the EGR and was when I had GT40P heads on the car.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

88 sport rebuild , need advice

Reply #214 –
Jay 18MMX1.5 nuts welded in the pipes and you are dun. Ge out the miller a few sparks and a wif of OZONE and screw the O2 in the pipes and you are GOLDEN. Remember always mount them as vertical as possible. Never DOWN. Good luck on the car. OH YES PS hose not to bad to replace. Just jack up the engine and replace it. I am assuming it is the HI SIDE!!
I spend money I don't have, To build  cars I don't need, To impress people I don't know

HAVE YOU DRIVEN A FORD LATELY!!

88 sport rebuild , need advice

Reply #215 –
Quote from: thunderjet302;420649
Actually the EGR works the same as it did before. The intake you have is an internal EGR intake, just like the stock one. The GT40/GT40P heads all have the EGR passage just like every other stock head. The tubes running to the back of the heads are for the Thermactor system. They have nothing to do with the EGR. For instance on my Thunderbird (since it has no cats) I removed the smog pump, thermactor tubing, and the TAB and TAD solenoids without issue. I'm still running the EGR and was when I had GT40P heads on the car.


my EGR is not moving at all that i can see

88 sport rebuild , need advice

Reply #216 –
Quote from: Haystack;420645
I wouldn't be bothered by leaving them unplugged and not hanging temporary. but the car will run richer and get worse gas mileage. if he has a bit of a drive, its not hard to mount them.


the o2 sensors are plugged in
they are not in the exhaust stream yet.  that will be my son's issue to solve.

i was asking what are the issues of having them plugged in but not in the exhaust stream

88 sport rebuild , need advice

Reply #217 –
Quote from: TOM Renzo;420651
Jay 18MMX1.5 nuts welded in the pipes and you are dun. Ge out the miller a few sparks and a wif of OZONE and screw the O2 in the pipes and you are GOLDEN. Remember always mount them as vertical as possible. Never DOWN. Good luck on the car. OH YES PS hose not to bad to replace. Just jack up the engine and replace it. I am assuming it is the HI SIDE!!


naw, i was just kidding, the power steering hoses are cake,, the high presure comes off easy as pie.. you just have to slide the rack/pinion bottie off to the side so you got more room.
its out now, will have new one tomorrow.

88 sport rebuild , need advice

Reply #218 –
The ECM will institute a set voltage for limp in mode if the O2 sensore do not switch and light off. So the car will run fine not great untill they see some oxygen in the exhaust stream. Other than that installing them is MANDATORY. Why chance messing up a good rebuild with an fuel delivery mechanism not working properly. Get them in the exhaust system so you can close this project out. Good luck TOM!!
I spend money I don't have, To build  cars I don't need, To impress people I don't know

HAVE YOU DRIVEN A FORD LATELY!!

88 sport rebuild , need advice

Reply #219 –
Ill see what i can do about that this week then.
i was talking with a service supervisor at the dealer, after he understood i was plugging them in but not having them in the exhaust stream,, he started to imply i may actually run a little lean but not that lean.

88 sport rebuild , need advice

Reply #220 –
If memoy serves me it will un at or around 14. This is from memory. But for sure a new engine wont like that very much. Jay you know they make band clamps with those o2 fittings on them. No welding. just a big hole and a pair of 9/16 wrenches?????????????????
I spend money I don't have, To build  cars I don't need, To impress people I don't know

HAVE YOU DRIVEN A FORD LATELY!!

88 sport rebuild , need advice

Reply #222 –
If you're going to leave them out of the exhaust stream, it's better to just unplug them.  This way, the PCM won't waste time trying to light them off, and won't waste fuel trying to alter the mix until they give a reading.  just unplug them and let it go to failsafe.  Tell Mason not to run it hard, as you don't want to risk over-leaning the engine because nothing is watching the mixture.  This isn't the way I'd want to run a fresh build.  Because seriously, a pair of tie-rod jam nuts do just fine as o2 ports.

88 sport rebuild , need advice

Reply #223 –
earlier tom, did you mean,,,,,,,,,,,
mount the 02 perpendicular to the exhaust section its installed in?

88 sport rebuild , need advice

Reply #224 –
Quote from: jcassity;420669
earlier tom, did you mean,,,,,,,,,,,
mount the 02 perpendicular to the exhaust section its installed in?


For reference see the picture on this page: http://www.summitracing.com/parts/sum-640725/overview/make/ford/model/mustang This is about where you should mount the O2 sensors. BTW I've had that particular H-pipe on my Thunderbird for years. It's a nice piece. It was only $110 when I bought it though.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.