Ford/Volvo Exhaust Test

[Jim Marshall]

I tested the Volvo/Osco manifolds to 15-20#. Basically they both held. One had the slightest leak (less than a drop in ten minutes at 17 PSI. I was wondering if I should let it go, you know, if it isn't broke why fix it. My reasoning was that if probably never has more than a few PSI.

Comments?

Jim

 

[Bondo]

Re: Ford/Volvo Exhaust Test

Ayuh,... Leaks get Worse, not Better...

 

[Jim Marshall]

Re: Ford/Volvo Exhaust Test

I believe it might have a slight leak at the pressure (15 to 20 PSI), more to do with the test. I doubt if it would leak at regular pressure. It showed no signs of a leak before. I have a gasket and can replace it if need be.

The manifold is 36 years old.

Jim

 

[a70eliminator]

Re: Ford/Volvo Exhaust Test

Well, if one held pressure it proves your gauge and regulator set up is tight, the other however slight has a leak, spray some soap bubbles on it and around all those drain fittings and find out where the air is escaping. If the manifold has a hairline crack somewhere it may open up once it gets hot, with any luck your leakdown is one of them drains or where your pipe threads.

 

[Jim Marshall]

Re: Ford/Volvo Exhaust Test

I water tested it and it looked like a slight leak at the gasket. I will air test it tomorrow with soapy water.

Would you use permatex with a new gasket?

Jim

 

[zbnutcase]

Re: Ford/Volvo Exhaust Test

Yes, Permatex aviation sealer

 

[Jim Marshall]

Re: Ford/Volvo Exhaust Test

I pressurized them, tested with soapy water and not a leak.

Jim