ProForm 66782 Engine Builder Rotation Adapter Tool

Loved it

Easy to use and seems to be well made. Big hex nuts need big tools to use, soft metal will not hold up for long, this is a good deal for a number of reasons. You can use a 1/2 inch breaker bar or a 1 inch socket to turn it. The claim is it's made of stainless steel. Cost is reasonable. Only downside for me was you must have a balancer at least partially installed to use this item. All in all I loved it.Read full review

Verified purchase:  Yes • Condition: new • Sold by: tennessee-perfo...

Cast aluminum waiting to fail

Got this to rotate the crankshaft of a marine engine pre-season. Cast aluminum, fits the crank pulley but did not last. To be fair, the engine was not turning over freely, but I expected the tool to take some torque rather than snap as soon as some leverage was applied. Two legs snapped off. Takes a 1/2" ratchet but not the torque from a 1/2" ratchet. I would recommend this for a disassembed engine, or one with all plugs out, but not for much more than that.Read full review

Nice tool

The tool came as described. The tool fit perfectly onto the engine. Overall good quality product would definitely recommend.

Verified purchase:  Yes • Condition: new • Sold by: performancepart...

Could be of better quality.

My opinion, is is too fragile, should a little heavier in general.

Verified purchase:  Yes • Condition: new • Sold by: tennessee-perfo...

Very useful for marine engines

I had to buy longer bolts to attach it to the harmonic balancer, but once installed, it rotated the crank shaft with ease.

Verified purchase:  Yes • Condition: new • Sold by: tennessee-perfo...

Awesome Adapter

Very Nice . Heavy duty forged aluminum, not SS. Works perfect inside my aluminum crank pulley on my SBC. Use 1 inch socket not 1/2 inch breaker bar or you could possibly break it. Thanks

Verified purchase:  Yes • Condition: new • Sold by: winnerscirclesp...

good tool for the job engine rotation cant be done with out it

very good tool well priced

Verified purchase:  Yes • Condition: new • Sold by: performancepart...

it's a good idea. Needs to be stronger.

it works as long as you don't put to much pressure on it. The one I purchased broke.

Verified purchase:  Yes • Condition: new • Sold by: tennessee-perfo...

Rotation adapter

Great quality part. Shipped and arrived sooner than expected.
Thank You!!

Verified purchase:  Yes • Condition: new • Sold by: performancepart...

Loosened a seized engine after 10 years!

Marvel Mystery Oil in all of the cylinders plus this and a breaker bar did the job!

Verified purchase:  Yes • Condition: new • Sold by: performancepart...