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COMP Cams Piston Stop Tools 4795

Piston Stop, Top Dead Center Stop, Cylinder Heads On, Spark Plug Style, 14mm, Adjustable Depth, Kit

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Brand: COMP Cams

Manufacturer's Part Number: 4795

Part Type: Piston Stops

Product Line: COMP Cams Piston Stop Tools

Summit Racing Part Number: CCA-4795

UPC: 036584720447

Piston Stop Style: Cylinder head on

Cylinder Head Plate Included: No

Thread Adapter Fittings Included: Yes

Thread Adapter Sizes Included: 14mm x 1.25

Quantity: Sold as a kit.

Notes: Stop is design to fit most engine applications.

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

These COMP Cams piston stop tools are designed to stop the piston in order to find top dead center. They thread into the spark plug hole for accurate use.

Warranty

Questions & Answers Ask a Product Question
Q:

how do you know where top dead center is to set the tool at the right depth?

Asked by KEITH on June 13, 2017

A:

The piston stop is used to find top dead center when degreeing a camshaft. You would tighten it so that the piston will hit it. You rotate the engine over one way till it hits the stop and mark your degree wheel. Then you will rotate it the other way till it hits the stop again. You take that number plus the other number, divide by two and then that number will be true top dead center. You rotate your engine to that number on the degree wheel and put the degree wheel to zero at this point.

COMP Cams COMP Cams Answer - June 14, 2017

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Q:

how to know the proper depth to set your piston stop tool for use on a 351 ford Windsor motor

Asked by JOHN on May 04, 2018

A:

The way I do it is watch valves on number 1 piston. Get it to where it is coming up on the compression stroke. With all of your spark plugs out so it's easy to turn with a ratchet on the balancer bolt. Insert the stop tool in the number 1 hole. Turn the crank till it stops. DON'T apply too much pressure!!! Make a mark on your harmonic balancer. Then turn the engine the other direction till it stops again. Make another mark. Split the difference between the two marks. That is TDC of that position. This method works for all makes.

DAVID from NC answered on May 04, 2018

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Most Helpful Reviews Review This Product

35 Customer Reviews for COMP Cams 4795 - COMP Cams Piston Stop Tools

Average Customer Review

5 Star

(18)

4 Star

(5)

3 Star

(3)

2 Star

(2)

1 Star

(7)

+See All 35 Reviews

Junk

Summit RacingSummit Racing Verified Purchase

CCA-4795
This item must have been made with some unknown form of metal softer than aluminum but slightly harder than room temperature butter. After threading it in one time, noticed that some of the plating had come loose inside the bore.

3 of 3 found this review helpful.

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Reviewer: from United States

Date: March 31, 2014

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Quality

Useless if it does not fit.

CCA-4795
Bought one and It would not fit my SBF GT40 heads. Won't thread into the head.

1 of 1 found this review helpful.

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Reviewer: from Canada

Date: January 10, 2019

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Did not fit

Summit RacingSummit Racing Verified Purchase

CCA-4795
Did not fit my Brodix heads or factory gm heads.

1 of 1 found this review helpful.

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Reviewer: from AL

Date: September 27, 2018

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Quality

Piston Stop

Summit RacingSummit Racing Verified Purchase

CCA-4795
Had to file the threads to make it fit. Not sure weather I ordered the wrong size or the coating on it was an issue ,other than that it worked fine.i would recomend this product to others.

1 of 1 found this review helpful.

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Reviewer: from PA

Date: August 03, 2018

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Quality

OK but

Summit RacingSummit Racing Verified Purchase

CCA-4795
the threads needed cleaning up..did not thread well, in plug hole threads..while my plugs thread easily by hand, so did not want to bugger up the plug threads in the head. and it would be nice if mfg would smooth out the stop screw head where it contact piston..did that myself with a file..no reason for that surface to be narly. Tool works but needs consumer refinement to the not so good mfg machining. I expect better from this mfg. No doubt not made by them..and made in some other place ...read more

1 of 1 found this review helpful.

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Reviewer: from WA

Date: October 24, 2016

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Quality

Some parts are not legal for use in California or other states with similar laws / regulations

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