Thorp Air Command - T18.net

Snap-on has (surprise) a really nifty one with a high def imager. It costs a grand. Ouch.
Costco has one for $159. I can return it at Costco if I don't like it but I never feel good about doing that. It has a 640x480 imager, a 320x240 viewer and an sd slot to view pics on a computer. Comments on the Vans forum about earlier Costco models noted that you couldn't twist the snake enough to see the valves without a mirror. Anyone know if that's still true, or in any case, are there any decent borescopes that don't cost a thousand bux?

A number of guys on vansairforce.net have had good luck with cheap dental cameras.

Milwaukee tools bore scope with a small diameter end at Home Depot for around 250. Have not used one but Milwaukee tools are pretty good.

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http://www.dixiefriedfabrication.com/

Princess Auto (in Canada) has the Autel brand...I bought their top of the line model MV400 it comes with a 8.5mm diameter head and all the features mentioned about the HD unit. I find the flexible cable very easy to maneuver and bend....I was able to use the included mirror to get a view of the valves. It was on sale last week for $159.99 (regular $229.99)...so far so good and its pretty neat seeing the valves without having to disassemble the engine.

If you have a laptop, Cleveland tool has a nice one with a USB plug
I have used it several times - all of $115
http://www.cleavelandtool.com/Seeker-50 ... j2mJdLkuSo

I ordered one of those USB plug into your laptop type scopes off eBay for $50, I haven't received it yet but it has a small 7.2mm diameter head and if the image specs are to be believed it is a good or better than many costing up to $250. Costs seem to go up rapidly if you want to get into the professional quality with HD images or a smaller diameter snake!

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Stug