Re: V4 Head Mods for unleaded gas - Saab Vintage Models Bulletin Board - Saabnet.com
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Re: V4 Head Mods for unleaded gas
Posted by kansas (more from kansas) on Fri, 17 May 2002 15:54:01
In Reply to: Re: V4 Head Mods for unleaded gas, Brian, Fri, 17 May 2002 12:23:14
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Any machine shop that is working on your heads should be able to get the valves easily enough, but if you want to get your own, Northern Power Products, 1-800-284-6247, can probably help with those and most other parts such as your flywheel bolts. On the leaded/unleaded question, to the best of my understanding V4 heads, at least earlier ones, were not made with hardened valve seats, but it is routine for any shop to install them and this should be done if the heads are off. Heads not made for unleaded gas (ie without hardened seats) vary widely in their susceptibility to problems when run on unleaded, due to many factors such as metallurgy and engine design. I believe it is only the valve seats that are different, the valves are the same.
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