Mini Valve Spring Tester

[khryslerkid]

Are they any good? Read a couple of negative reviews on Summit but a few positive reviews too. Not wanting to go to a machine shop...
http://m.summitracing.com/parts/pro-66834

 

[lewtot184]

i have one i use all the time. you just need to keep in perspective that it's not $1000 rimac and it's best use is for single spring street engines.