High mileage terminator boot issues

[mgt351]

So I bought a high mileage terminator (156k miles) that had a bent k member
I replaced the Kmember and finally took it out for a drive. I’m only seeing 5 psi on the autometer boost gauge
The car is modded with the following
Upper pulley either 2.76 or 2.80, metco 90mm auxiliary idler,
Stock lower, accufab throttle body and elbow. Long tube headers with x pipe and magnaflow exhaust
It has been tuned by a previous owner and I have the x cal with it.

I don’t hear the typical eaton blower wine, it’s running a Gates K080751HD And does show signs of some belt slip on the under side of the hood
I’m going to change the belt first but could the blower be ready for a rebuild? Has anyone had to rebuild a stock Eaton? Any help would be appreciated

 

[hotcobra03]

Is this the first time driving this car ?

I have long tubes and don’t hear whine like before installing them

 

[mgt351]

Is this the first time driving this car ?

I have long tubes and don’t hear whine like before installing them

Yeah, I bought it wrecked and just got it back on the road

 

[gt347mustang]

Highly doubt the blower itself is the issue.

 

[mgt351]

Highly doubt the blower itself is the issue.

That’s what I am hoping. I’m going to try a belt first
I’m just not sure how tight the belt should actually be

 

[olympic]

The stock tensioner has an indicator to show proper tension. According to the belt guide 03-04 Cobra Supercharger Belt Chart - LMR.com with a 2.76" upper and a 90mm aux idler, you should be runing a 74.5" belt.

 

[01yellercobra]

Check the line going to the boost gauge too. Mine had a kink that was causing a slow reaction.

 

[DSG2003Mach1]

Bad belt, tensioner, boost bypass actuator and the line to the gauge should cover it all

 

[mgt351]

The line is good, both stock and autometer read same, use different lines definitely feels like it’s only 5 psi

I’m uploading a pic of the tensioner. Looks like it’s damaged at the indicator area.

 

[01yellercobra]

Did someone chew on it then put it back on the car? Looks like it slammed together some how. I'd add a new tensioner to the shopping list as well.

 

[Roots-type]

that tensioner looks suspect af

 

[Blkkbgt]

The line is good, both stock and autometer read same, use different lines definitely feels like it’s only 5 psi

I’m uploading a pic of the tensioner. Looks like it’s damaged at the indicator area.

Pretty sure you just found out where your boost went.

 

[mgt351]

Update
Replaced the belt with the correct size and a new tensioner
Also checked the boost bypass valve with a hand held vacuum pump and it appears to be working
Still making 5 lbs so no change there

 

[hotcobra03]

03cobra vacuum hoses documented

Google it
Pdf2 is working one

This lays out the hoses in color

Something is in the wrong spot

 

[mgt351]

03cobra vacuum hoses documented

Google it
Pdf2 is working one

This lays out the hoses in color

Something is in the wrong spot

I checked the diagram and the valve and solenoid both look to be hooked up as the diagram shows

 

[hotcobra03]

Boost actuator

You do see arm moving full up and down?

 

[hotcobra03]

Also like in link

Two ports on back of blower.

Upper/ lower.

Are those right?

 

[mmustangsrus]

The line is good, both stock and autometer read same, use different lines definitely feels like it’s only 5 psi

I’m uploading a pic of the tensioner. Looks like it’s damaged at the indicator area.

replace that before it explodes. go to summit racing & get this one if you can't / don't want to spend the big bucks on the other ones

https://www.summitracing.com/parts/rsp-404225

make sure to take your old one.... put them side by side so you can shim the new ones height like every other 03-04 using it. good luck & good night lol

" I'll be back "

 

[mgt351]

replace that before it explodes. go to summit racing & get this one if you can't / don't want to spend the big bucks on the other ones

https://www.summitracing.com/parts/rsp-404225

make sure to take your old one.... put them side by side so you can shim the new ones height like every other 03-04 using it. good luck & good night lol

" I'll be back "

Already replaced it see post 13

 

[Shadow Grey 03]

You guys have never seen someone notch the tensioner before? It's a hack job on that one, but it's easier to get a tighter belt on when there is more swing on the tensioner.