Evolution of GM-Opel CIH engine

tekenaar · 07-21-2009

While researching information on the SIDI (LNF) engines used in the Solstice GXP, I ran across this " GM Family II engine

GM_Family_II_engine
" reference link, which nicely details the evolution of Opel's 4/6 cylinder engines beginning with the CIH until today!

hrcollinsjr · 07-21-2009

Here is another (I thought) neat site with the history of the Opel CIH engine. I posted this one to the links page some time ago. Both sites are different so don't think if you've seen one, the other is going to be a total repeat.

Neat find Otto!

Harold

okieopel · 07-22-2009

Otto-
Excellent find and very informative.
Way to go!

Tru-Craft · 07-22-2009

Great information!
So my GT has the worst head design Opel ever produced.
Wow, that Crossflow 16 valve head with a Turbo would have been a nice GM option.
Lyle

wrench459 · 07-22-2009

Originally Posted by Tru-Craft

Great information!
So my GT has the worst head design Opel ever produced.
Lyle

Well I would not go that far.
If you look at the low-mid rpm port velocity of the head its not that terribly bad for a 40+ year old design.

07-21-2009	#1 (permalink)
tekenaar Cunning Linguist Join Date: Mar 2002 Location: Plano, TX 75074 Posts: 4,441 Real Name: Otto Provided Answers: 13	Unanswered: Evolution of GM-Opel CIH engine While researching information on the SIDI (LNF) engines used in the Solstice GXP, I ran across this " GM Family II engine GM_Family_II_engine " reference link, which nicely details the evolution of Opel's 4/6 cylinder engines beginning with the CIH until today! __________________ 1960: ♥ '61 Rekord PII 1.7 3S 3.9 ♥ '69 Kadett LS 'sprint' 1.9 3A 3.18 1970: ♥ '70 GT 1.9 4S 3.44 ♥ '72 GT 2.2SSD 5S 3.44 ♥ '72 GT 2.4FI 5S 3.44P ♥ '73 GT 1.9FI 4S 3.44 ♥ '75 1900 1.9FI 4S 3.44 1980: ♥ '85 Bitter SC 3.9FI 5S 3.44P 2000: ♥ '09 Solstice GXP Coupe 2.0 SIDI VVT Turbo 5S 3.73P

07-21-2009	#2 (permalink)
hrcollinsjr 2200 Post Club Join Date: Jan 2003 Location: Chapel Hill, TN Posts: 2,266 Real Name: Harold Collins Provided Answers: 14	Here is another (I thought) neat site with the history of the Opel CIH engine. I posted this one to the links page some time ago. Both sites are different so don't think if you've seen one, the other is going to be a total repeat. Neat find Otto! Harold Last edited by hrcollinsjr; 07-21-2009 at 04:05 PM. Reason: Wasn't 'neat' enough so I thought two more 'neats' were in order.

07-22-2009	#3 (permalink)
okieopel Solo II is fun in a GT! Join Date: Feb 2003 Location: Norman Oklahoma Posts: 181	Otto- Excellent find and very informative. Way to go! __________________ Dan 'okieopel' Oklahoma Opel Preservation Society O.O.P.S.

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07-22-2009	#4 (permalink)
Tru-Craft 1970-GT Join Date: Sep 2005 Location: Clearwater, Florida Posts: 1,237 Provided Answers: 2	Great information! So my GT has the worst head design Opel ever produced. Wow, that Crossflow 16 valve head with a Turbo would have been a nice GM option. Lyle

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