I have removed my air pump, now I am removing its plumbing and the valves. There is a hose that goes from the diverter valve into the engine. Do I just cap that tube into the engine when I remove the valve?

Thanks again in advance for your help.

 

Any Ideas?

 

If you are talking about the AIR fittings on the exhaust manifolds, yes, you can cap them. As I understand tho, these fittings have a one way valve and it isnt absolutely necessary. I trimmed the tubes about a 1/4" above the manifold, tapped them with a 5/16" tap and ran a short bolt in each.

Look at my avatar pic to the left and you can see the bolt heads on the manifold.

 

If you are removing everything in the system,you will also need to cap or crimp where the tube goes into the convertor, or it will make a hissing sound....WW

 

I am aware of the check valves at the manifold and I have replaced the converter with a stainless test pipe. From the Air pump there is a hose that goes into a solenoid and a black valve with some vacuum lines. I removed those vacuum lines but right below that valve there is a rubber hose that appears to go into the engine. Can that be removed and capped.

Thanks

 

i'm not clear on where this rubber hose is located. Could you post a photo ??

Re the vac line removed, your talking about the small vac line that connects to the fuel pressure regulator ??

 

I'll try to get a photo tonight, it is dark in there but I will do my best!

 

He may be talking about the AIR Muffler.

 

The hose that comes out of the control valve vacuum harness, which connects to the air control valve.

 

The lny two hoses that I know of are, one coming from the AIR
Pump and one feeding the Exhaust manifolds, each first routed through a check valve.

My air control valve has two hoses similar to yours except they are a right angle to each other.

Check the hose fitting and hose on the AIr pump that you removed..

BTW, I'm looking for a exhaust pipe to replace my Cat Converter. Where did you purchase yours and would you recommend it ??

Hope this helps

 

I bought my test pipe on ebay, it fit great, stainless, easy install, noticeable difference in power and sound on my 85. I am very happy with it. I paid $50 he has gone up a bit on them.

http://www.ebay.com/itm/CONVERTER-TEST-PIPE-CORVETTE-MONTE-CARLO-SS-CAMARO-HIGHFLOW-TESTPIPE-/151595281312?pt=Race_Car_Parts&hash=item234bc86ba0&vxp=mtr

 

thanks re the test pipe.\

You good on the dis-coonect now ??

 

Ran out of time tonight will look at it tomorrow. I did disconnect the tubes going into the manifolds. That rubber hose goes under the car. I will have to see where it ends up.

 

To the now missing Cat...

 

It was the air muffler, everything is now off and you guys are right, what a difference in decluttering the engine compartment.

Thanks for the help. I am now cleaning some of the gunk around that area. And I am ready to attack the next project.

 

Ah, yes, I'd thought that you had check that device.

Well, at any rate your set. How about a few photos. I've forgotten, did you post whose pulley adapter you used for the Serp belt ??

I plan on eliminating my AIR pump on my C4. But it will need to wait until Summer, as I have several mini projects to complete and a good wash on my '56 210 Coupe before Summer Fun.. No, not a Corvette, but She does sport a LS1 & T56 6 speed,, which was an interesting conversion.

 

Tried that on the track. WOT run only. 3 runs without , install and 3 runs with. No appreciable different times. If you had noticeable power gains, I would suspect 2 options. Old cat that was plugged partially or placebo effects in play. 1 or 2HP, maybe but I don't think it is possible to detect that little change in the butt dyno.

 

It may have have been clogged, when I removed it you could hear bits rattling around inside. I did not Dyno or go to the track. But my performance app did show a .2 sec increase. I understand that these GPS apps can be flaky, but it was the best that I could do at the time! According to the app went from 14.5 at 95MPH to 14.3 at 96MPH. I think with better driving and traction I could get to 14.0.

I have an 85 with 135K miles.

 

Spread butter on it. The cat is toasted

 

Here are the photos from the Air pump and plumbing removal. Next Installation of TPIS Headers.