How Cometic Head Gaskets can cure high compression in an Opel CIH Motor or any Custom Engine Build

  • August 6, 2021 at 12:36 PM
  • 0 Comments
  • 31 Views
External Content youtu.be
Content embedded from external sources will not be displayed without your consent.
Through the activation of external content, you agree that personal data may be transferred to third party platforms. We have provided more information on this in our privacy policy.

NOT just Opel motors run into problems with multiple or aggressive decking causing compression issues. Fortunately Cometic has a solution, for most any motor with MLS gaskets in multiple thickness. From 0.018" ( 0.5mm ) thick to 0.140" ( 3.5mm ).

Please note I was NOT sponsored but Cometic.. I am just a fan of their product.

External Content www.youtube.com
Content embedded from external sources will not be displayed without your consent.
Through the activation of external content, you agree that personal data may be transferred to third party platforms. We have provided more information on this in our privacy policy.

In the case of Opel CIH motors.. While they sell them, they seem to not list them on their website under Opel, but under GM / CIH.

https://www.cometic.com/applications/automotive/gm/cih

https://www.cometic.com/products/C4512-030 ( 0.8 mm)
( Close to stock )

https://www.cometic.com/products/C4512-051 ( 1.3 mm )
( Best to compensate for standard decking)

https://www.cometic.com/products/C4512-080 (2.0 mm)
( Best to compensate for aggressive decking)

https://www.cometic.com/products/C4512-140 (3.5 mm)
( Best to compensate for excessive compression / detonation )

As for the Calculators I used :

http://www.wallaceracing.com/Calculators.htm

http://www.wallaceracing.com/cr_test2.php - Compression Ratio

http://www.wallaceracing.com/calc-crank-press.php - Cranking Pressure to Compression Ratio

http://www.wallaceracing.com/dynamic-cr.php - Dynamic Compression Ratio ( When running )

Visit us on Facebook : https://www.facebook.com/GoinManta/ or call 1-804-503-0249

For more info on availability of Rebuilt Getrag 240 5 speeds for Opel GTs, Mantas and others.

0:43 - Detonation
1:06 - Piston Wear
1:55 - I'm not an expert but play one on YouTube ;)
3:55 - 2.4L Block with custom pistons
5:30 - Calculating Compression Ratios
7:04 - Gaskets and their affect on ratios

Background music courtesy of : The Clear - https://spoti.fi/3lMX34K

Comments