Technical Tips > Post 84

85 L98 Smog pump delete

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Redvette85:
Hi all,
I've removed my smog pump and wondering what you guys used to plug off exhaust manifold? Plumbing cap? If so what size is it?
Thanks

Vettech:
I'd like to do the same on my 87, appears many are reticent to advise, since removal contravenes the rules, but it appears a lot change over to after market extractors which dont have the AIR tubes. The small tubes are S/S,  Bfit thinks they can be plugged or cut off and brazed up. Welding or brazing too close to the cast iron exh manifold is fraught with dangers.

Ausrs:
I cut mine down and got some short fat screws that went into the holes and added a bit of silicon,that was a temp fix until i pulled the manifolds off to weld up the holes and do a proper job,4 years later no leaks and the fat screws are still in place with no leaks
Mine is an 87

Vettech:
Yes, but the tubes are S/S whilst the manigold is cast, I believe much care must be taken if the tubes are cut off flush, since cracking etc can result when trying to weld them. Leaving then on with all the interconnecting hoses, pipes etc looks odd.

Vettech:
Just a resurection for this subject

I'm putting my 87 back together and the EGR & SMOG pump look like a cluttering mishmash.

Whilst the EGR can stay for now - my A.I.R pump has seized once after a wash, now stinks of WD40, a consensus of Youtubes seems to indicate the pump can be gutted and left in-situ (looks the part) but the solenoids, divertors, tubing etc could go.

Would make for a much cleaner looking engine. So the issue of the A.I.R tubes and pipes in and out of the manifold raises its ugly head again. What to do. I suppose what I'm asking - is: has any one who has done this had any issues at REGo time.???..

I suppose using a very small thin disc to cut off the tubes, leaving enough for a screw to screw in as a plug would be the way to go.
Any one out there done it differently - please let us know. P.S I dont want to change the manifold.

PPS - I'm not sold on the after market Smog pump replacement pulley Kit.

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