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· Opeler
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37 Posts
Discussion Starter · #1 ·
Hi,

This is my first post to the group and my question is ...

I was looking into purchasing a 2.4 engine with closed loop fuel injection for my GT but wanted to know if there are performance or manufacturing differences between the years they were manufactured? Power, design, materials, FI system, etc?

I know production stopped in 1996 but I am not sure when they were first produced. I am guessing sometime in the 70 say 74?

Are there years that are more desirable than others: power, reliability, quality(forged), etc.

Also, what years and what cars were they in? I am familiar with the Frontera and Omega but don't know what years? Are there other cars these engines were manufactured with?

Thanks in advance.

Francis

P.S. I'll post some of the pics from my GT on this site sometime this summer - I think the group would enjoy it!
 

· Super Moderator
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15,247 Posts
I believe the 2.4 came out in '90 or so. I've never seen any older than that.
Physically, the 2.4 fits the same space as a 1.9. But everything is in actuality different.

Different block
Different crank
Different rods
Different pistons
Different head
Different EFI system

The biggest difficulty is the fact that between the raised inlet ports and the large intake manifold, it will not fit (the EFI that is) under the hood of any US-market Opels unless you install a substantial hood scoop.

Bob
 

· Opeler
Joined
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37 Posts
Hi Bob,

Thanks for answering my question so quickly.

I am familiar with the many differences between the 1.9 and 2.4 block but I was curious to know if there were performance manufacturing differences between the 2.4 liter blocks (amongst themselves). Again, regarding internal parts, performance, quality, forgings vs. casting, ECM, FI system, etc.

I haven't heard of one year 2.4 liter being superior to another year, but I do not know. I also don't know if some of the 2.4s put out more HP stock than other years. And, what years are these, if there are 2.4 liter years that are more desirable.

I've been working with Gil for my parts for the last couple years - he's great and he has been a wealth of knowledge as are many of the group members on this site. I know he's on vacation now, so I thought I'd post this question to the group and see where it goes.

Again, thanks Bob for answering my question.

Francis
 

· Opel-ing since '74
Joined
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1,142 Posts
Hello Francis:
Welcome aboard ! We have several members of this list in the area. I used to live in Parkside (Brookhaven) area - am now in Hatboro, although my daughter and son still live with their mom in Brookhaven. You will have to watch for notice of an area get-together soon (not sure exactly when, possibly in July); come on out and trade tips and horror stories with us !

Rick Gradwell
Hatboro, PA
73 GT
75 Manta
 

· Super Moderator
Joined
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15,247 Posts
Francis said:
Hi Bob,
I am familiar with the many differences between the 1.9 and 2.4 block but I was curious to know if there were performance manufacturing differences between the 2.4 liter blocks (amongst themselves). Again, regarding internal parts, performance, quality, forgings vs. casting, ECM, FI system, etc.

I haven't heard of one year 2.4 liter being superior to another year, but I do not know. I also don't know if some of the 2.4s put out more HP stock than other years. And, what years are these, if there are 2.4 liter years that are more desireable.
All the 2.4's have forged 8-counterweight cranks, forged rods, cast pistons with floating 22mm pins, and chrome-stemmed valves. To my knowledge, they are all listed as 125-128 PS (One PS is about .98 HP), the differences most likely from the exhaust system variables from car model to car model. I know these were used as the baseline engine in the Omega, as well as one option for the Frontera. I don't know of any other models they were used in, but as the engine options vary greatly from country to country, it stands to reason that it may have been used in other models as well.

I do believe the later engines have an improved ECU, utilizing Bosch Motronic. Not sure if the early ones do or not.

Bob
 

· Old Opeler
Joined
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5,564 Posts
Going Strong!

Some 2.4s listed on German EBay are listed as from Opel "Caravans" and from the pictures it looks like they are some light commercial vehicle or van.
I know Fronteras (Vauxhall?) used this 2.4 CIH engine well in to the 1990s and it would not surprise me if it was used for much longer in commercial vehicles as a "workhorse".
 
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