checking boost pressure on Ford 7610

[DJ-speed]

hi, I'm looking to check the boost on my 7610, I've removed the blanking plug in the test port, but from what i can tell the plug size is 3/8 with a 28 tpi thread, unless its m10 with 0.9 thread, but due to its age I imagine it was not intended to be metric. So does anyone know for definite the correct thread size, and where I can get a suitable adapter to connect a boost gauge into the port.cant seem to find the above 3/8 with 28 pitch thread
Thanks in advance

 

[roscoe erf]

does the turbo have one of these fitted

 

[DJ-speed]

Not that I've seen.

 

[DJ-speed]

Not that I've seen. Will double check in the morning but it doesn't look like boost is controlled like it is on my car.

 

[rob h]

does the turbo have one of these fitted

No they were just a simple turbo .no waste gate

 

[roscoe erf]

No they were just a simple turbo .no waste gate

oh that won't work then

 

[rob h]

Are they not bsp have you any airline fittings kicking about

 

[DJ-speed]

Good point, I'll check the airline threads

 

[DJ-speed]

It was 1/8 npt thread

 

[DJ-speed]

Its got about 7 psi of boost, it doesn't seem enough, can i tweak it to give more boost somehow?

 

[Lincsman]

Its got about 7 psi of boost, it doesn't seem enough, can i tweak it to give more boost somehow?

Air filters?

 

[Timbo]

Its got about 7 psi of boost, it doesn't seem enough, can i tweak it to give more boost somehow?

Only with more fuel, but they get very smokey off idle then. The factory turbo wasnt really very well sized to the engine, but its what they had st the time.

 

[rob h]

What boost should it have.why are you checking if. Have you got a problem or are you just trying to get more power

 

[DJ-speed]

i was checking because It feels like its down on power.

 

[DJ-speed]

Air filters?

Air filters are brand new

 

[Timbo]

Air filters are brand new

How much soot is she blowing at full chat ?

 

[DJ-speed]

Some but not as much as my old 8200 lol

 

[DJ-speed]

Only with more fuel, but they get very smokey off idle then. The factory turbo wasnt really very well sized to the engine, but its what they had st the time.

Hmm, what turbo would be best for it do you think?

 

[rob h]

Do you know what pressure should be.if you're down on power have you had injectors checked.realy with the old turbo they either work or don't.they tend to leak oil making the engine smoke.but it's Ford so it's hard to know the difference.the only way to stop them smoking is stop the engine

 

[DJ-speed]

Forgot about the manual, it should have 15psi or 1 bar, so i am only getting half what I should be getting. Manual gives 36 possible reasons, its just had new oil and filters so shouldn't be that, not sure the bolts will undo if I try to remove it, so will try cleaning the oil pipes. And check if that lets it running more smoothly. Beginning to think I should have paid a bit more and got something newer. Nostalgia obviously kicked in