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Old 05-01-2021, 12:45 AM   #26
1968 volvo
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Location: Santa Rosa California
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Originally Posted by planetman View Post
Remove the secondary butterflies and the secondary throttle shafts and plug the holes in the manifold.

We've seen people unnecessarily drill, tap and install threaded plugs, while we have the correct size plugs that just need to be tapped in with a hammer.

If you look carefully you will see that Volvo did the exact same thing by using a tap in plug for the inner holes for each of the secondary throttle shafts.

In fact we used to re-purpose the used plugs from cracked manifolds and when that supply ran dry we bought them right from Volvo back when they were available and when that well ran dry, we sourced some from a supplier that made the right size plug.

FYI, you will need to remove the carbs to remove the secondary butterflies and if not already done, you should solder closed the decel valves that are built into the butterflies in the carburetors.

We also have carb base gaskets as they might tear when you remove the carbs.
Where can I get the plugs and gaskets? Seems like the way to fix it.
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Old 05-01-2021, 01:37 AM   #27
planetman
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We've got them. $10.00 for 2 plugs and 4 gaskets plus shipping.
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Hi Performance Automotive Service (formerly OVO or Old Volvos Only)
Torrance, CA 90502
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Old 05-01-2021, 11:34 AM   #28
1968 volvo
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We've got them. $10.00 for 2 plugs and 4 gaskets plus shipping.
I suppose for ten dollars, its worth a shot. Is your website High Performance Automotive Service? Or is it better to buy from you?
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Old 05-01-2021, 12:10 PM   #29
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I suppose for ten dollars, its worth a shot. Is your website High Performance Automotive Service? Or is it better to buy from you?
Planetman and his brother hiperfauto are the gurus for the OHV cars. Every time I had a problem their solutions worked the best.
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1989 240 B230F (V15 cam, chipped EZK), M47 (Lost a fight with a Chevy express van)
2012 VW Tiguan 6 speed auto (oh the joys of carbon buildup).
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Old 05-01-2021, 12:42 PM   #30
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Both of those parts are on our website and you can place an order after registering, but you won't be able to pay as we have disabled the payment module.

To ensure accuracy, we found it necessary to interact with our customers. It is very easy to order the wrong parts due to the interchangeability of parts between the different Volvo models.

For example, it is not uncommon to find a B20 engine in a car that originally came with a B18 or even a B16 engine.

You can reach me through our website via our contact page below.


http://hiperformanceautoservice.com/contact_us.php



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I suppose for ten dollars, its worth a shot. Is your website High Performance Automotive Service? Or is it better to buy from you?
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