Desmogging a '76

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JTBernhardt
Posts: 93
Joined: Mon Dec 12, 2011 8:19 pm
Your car is a: 1971 124 Sport Spider
Location: Foresthill, California

Desmogging a '76

Post by JTBernhardt »

I've got a '75 Spider I'm trying to desmog. Does anyone have the size of the bolts needed to block off the ports for the EGR and the associated ports on the intake and exhaust?

Can I swap the exhaust side cam gear to a later 1800 cam gear without the smog pump without issue?

Is there anything else than can be deleted from the engine bay that's smog related?

Thanks
Last edited by JTBernhardt on Mon Jul 20, 2015 6:10 pm, edited 1 time in total.
JT Bernhardt

'71 124 Spider X2
'86 Bertone X1/9
'84 and '85 Maserati Biturbo's
So Cal Mark

Re: Desmogging a '76

Post by So Cal Mark »

76s still need to be smog checked in Calif
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JTBernhardt
Posts: 93
Joined: Mon Dec 12, 2011 8:19 pm
Your car is a: 1971 124 Sport Spider
Location: Foresthill, California

Re: Desmogging a '76

Post by JTBernhardt »

Meant to say '75.
JT Bernhardt

'71 124 Spider X2
'86 Bertone X1/9
'84 and '85 Maserati Biturbo's
707kevin
Posts: 83
Joined: Sun Jun 28, 2015 12:55 am
Your car is a: 1975 124 Spider
Location: Oregon Coast

Re: Desmogging a '76

Post by 707kevin »

Head plugs are m12 1.25 threads 1/2 inch long will work. These are nice too.
http://www.autoricambi.us/product/CH0-0 ... -Plug-Set/

Remove egr, air pump and injector system, vacuum electro valve on carb side, and every vacuum line on the carb and intake except for brake booster and fuel vent to charcoal canister. Plug or cap all. Don't leave any open ports.

Consider removing the dual points set up and bypass the ignition mode relay and convert to single points, time distributor to 10 deg

The egr that goes through the intake cam cover does not need to be plugged since it does not enter the head at all, just molded into the cover.

You can swap cam pulley for a non smog one. That smog pump pulley is heavy!
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Nanonevol
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Joined: Thu Nov 13, 2014 9:17 am
Your car is a: 1977 Fiat 124 Spider
Location: Medway, Massachusetts

Re: Desmogging a '76

Post by Nanonevol »

You can also get the head plugs at McMaster-Carr as well as almost any hardware you might need:
http://www.mcmaster.com/#set-screws/=y5u8q1
Part no# is 99642A205
1977 Fiat Spider
1985 Jaguar XJ6
1967 Triumph Bonneville (hard-tail chopper)
1966 BSA Lightning
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