how hard is it to convert to a vented opti?
01-05-2008, 01:33 AM
#3
TECH Apprentice
Join Date: Feb 2005
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What exactly is your purpose in changing over to a vented optispark? Looking at upgrading timing sets (limited options for 1994), or just want to prolong optispark longevity?
If the latter, you can technically modify your factory optispark to be vented for about $5. I did it years back -- molded a vacuum fitting to the cap, and drilled out the three 'drain holes' along the bottom of the rear plate (in which, I strung three vacuum fittings together). Yeah, I was bored and wanted to try it. Worked like a charm. Only thing you might want to order is the GM vacuum harness.
Otherwise, yeah, you'll have to follow what Porksoda said.
If the latter, you can technically modify your factory optispark to be vented for about $5. I did it years back -- molded a vacuum fitting to the cap, and drilled out the three 'drain holes' along the bottom of the rear plate (in which, I strung three vacuum fittings together). Yeah, I was bored and wanted to try it. Worked like a charm. Only thing you might want to order is the GM vacuum harness.
Otherwise, yeah, you'll have to follow what Porksoda said.
01-05-2008, 10:10 AM
#6
Staging Lane
Here is a good site that describes the parts you need to do the conversion. It may be an older site, so the cost of the parts is probably different now, but Jason Cromer at Sam Taylor Buick Cadillac usually has pretty good prices on all this stuff. If I was doing a cam swap as you are, I would definitely spend a few extra bucks and do the conversion.
http://para.noid.org/~muttvette/opti.html
http://para.noid.org/~muttvette/opti.html
