North American Turbocoupe Organization



a little boost
Machzman Offline
Senior Member
#1
Ok,check the timing on the car found it was off quite a bit, set the timing to 10 BTDC re-installed gray plug got 25 degrees BTDC is this right cause now I got some boost but also have a spark knock,also boost gauge doesn't seem to be working anyway of checking it or just replace?
Trying to get under 13sec.http://www.cardomain.com/ride/2546941/1986-ford-thunderbird
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Pete D Offline
Administrator
#2
Settin the timing with the sprout (gray plug) out allows just the mechanical ignition advance to be set. Putting the sprout back in allows the computer to ad the 20* +/- 3* that it adds. If your getting spark knock: 1.is you knock sensor (KS) plugged in? Are you running premium gas? What year car is it?
Does the car stil have the stock boost control system hooked up or is it bypassed?
It could also be a fuel supply problem.

On the boost gauge there is a high liklyhood that the plastic vacuum line that feed the gauge broke. Pull the gauge pod and check the gauge.

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NATO Member. it's not a vice, it's an obsession
Letting the cat out of the bag is a whole lot easier than putting it back in.
88 TC X 2, 86 SVO, mods list at
http://www.turbotbird.com/showroom/pd_88tc.htm
Pete Dunham


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Machzman Offline
Senior Member
#3
Its a 1987,I beleive when I bought the car the guy filled it for me cause a had a ways to go,also could you give me a slight hint where to find the knock sensor not sure,it still has the original boost system I'm looking at getting the Gillis valve and would that be hard to put in the car instead of under the hood,also looking for some ideas on performance parts it has 3" to the cat.into a single muffler,I also put a conical filter on it are there other types of cold air systems? Thanks for the help and would appreciate any other info
Trying to get under 13sec.http://www.cardomain.com/ride/2546941/1986-ford-thunderbird
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philS Offline
Senior Member
#4
click here to see the location of the knock sensor

on your car, it is on the back of the intake manifold (facing the firewall)

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86 TC, 73 Austin Mini, 72 Austin Mini Van

Click here to beat a ricer.
Did you hear about the Lucas powered torpedo? It sank.

86 TC, 73 Mini, 64 Mini Van, Saturn wagon
Click here to beat a ricer.
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philS Offline
Senior Member
#5
I would leave the Gillis valve (if you get one) under the hood.

You want the line from the gillis to the wastegate to be as short as possible. Also, once you get it set the way you want it, there's not a lot of need to adjust it, plus you can't really make adjustments while driving (like a knob-style boost controller) because you have to tighten the jam nut with a wrench.

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86 TC, 73 Austin Mini, 72 Austin Mini Van

Click here to beat a ricer.
Did you hear about the Lucas powered torpedo? It sank.

86 TC, 73 Mini, 64 Mini Van, Saturn wagon
Click here to beat a ricer.
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Pete D Offline
Administrator
#6
Hold off on the boost valve until you get the detonation problem behind you. Upping the boost while you have a detonation problem is only going to make the problem worse, as in blown head gasket. The boost valve is not hard to install. There are verbal instructions and pictures at the end of the article in the Technical Article section. If your premium fuel switch is set to "Prem" then you need premium fuel. Try setting it to REGular until you can refill th etank with premium. Make sure the knock sensor is connected for now.
Pete Dunham


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Machzman Offline
Senior Member
#7
Thanks for that site on the sensor locations I think that going to be a big help in the future Thanks Machzman
Trying to get under 13sec.http://www.cardomain.com/ride/2546941/1986-ford-thunderbird
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Machzman Offline
Senior Member
#8
I,m going to order the valve but I am holding of until I get things right,I had to take the dash apart to get to the factory gauge did find that the line was cracked should I just replace the line or is a aftermarket gauge going to give a better reading? And is the Hallman boost controller worth the money? I found the knock sensor is plugged in I'm thinking its really the fuel and how long has the fuel been in there? And thanks for the info Machzman
Trying to get under 13sec.http://www.cardomain.com/ride/2546941/1986-ford-thunderbird
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Pete D Offline
Administrator
#9
You can replace the line to the boost gauge or go aftermarket. If you planning on upping the boost dowwn the road you will almost need the aftermarket as the factory has limited range as well as accuracy questions. I recommend a combination vacuum/boost gauge that reads to 30 on the boost side.

Hallman is makeing some nice looking stuff. I have one of their early valves for under the hood type mounting. It's very similar to the Gillis and it's was twice the price.
Pete Dunham


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