What Compression Guage do I need for my CC 283bs

"I need to check the compressi

"I need to check the compression in one of my 283's. I'm looking on Ebay and there seem to be two types. One claims to have a cone adapter that will fits "all spark plug holes". Others seem to have use a threaded part which threads into the spark plus hole. I will paste the copy of the cone one below. If I need the threaded type, what thread do I need? Thanks much Bill

COMPRESSION TESTER w/ QUICK DISCONNECT & DIAL GAUGE ~Diagnose Worn Piston Rings Burnt Valves Bad Head Gaskets~

FEATURES & SPECS:


Quick-Disconnect Makes It Easier To Reach Obstructed Plug Ports
12" Flexible Hose For Easy Reach
Cone Adapter Fits ALL Spark Plug Holes
Side Release Valve
Large Easy-To-Read Gauge
SAE & Metric Readings
Range SAE: 0-300 PSI
Range Metric: 0-21 Kg Per Square Cm
Includes Sturdy Storage/Carrying Case"

Use the screw in type. They a

Use the screw in type. They are more accurate since they don't leak.

Jeff

yes
buy a good one not a chea

yes
buy a good one not a cheapo one