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opel assimilated
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Discussion Starter · #1 ·
Hello all, I need to pick a few brains here. I have read alot about people building the 1.9 motors, but have not heard anything about the 2.os that OGTS sells. It seems to me that the time and money are better spent on the 2.0. Please correct me if I am wrong, What H.P. can I expect from the $1000. OGTS 2.0 as opposed to building my own for about.....? HMMMM what to do......build 2.0 or buy 2.0..... Help please!!
 

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Super Moderator
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13,844 Posts
There's nothing wrong with OGTS's 2.0 litre engines. But you can easily modify a 1.9 into a 2.0 litre. If aftermarket forged pistons are used, and early (pre-1974) connecting rods utilized, they are nearly bulletproof. ALL the European 2.0 litre engines used the later cast steel connecting rods (as used on most of the 1974 and all of the 1975 Opel 1.9's in the US), versus the earlier forged steel Opel rods used on 1.5, 1.7, and 1.9 litre engines through 1973. A true Euro 2.0 litre has a 95 mm bore, which is 2 mm larger or roughly .080" more than a 1.9 litre. For an Americanized 2.0 litre made from a 1.9 block, we normally bore the block to 3.75", or 95.25 mm, which is .090" more than the stock 93 mm bore of a 1.9. Sounds like a lot of machining, but the Opel block can handle it, it's only .045" per side. I've only rejected one block as unsuitable for such an overbore due to core shift.

Bob
 

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OPEL-LESS!!!
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2,116 Posts
if you would like more info on what it would take to build a 2.0 to help you decide whether to buy or build......check out the thread, "economical CIH engine rebuild" the whole 5 page thread is about taking my 1.9 and making into a 2.0 with the help of such people as rallybob and many others.
 

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Member
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The cost to build a 1.9L into a 2.0L is nearly the same as doing a proper 1.9L rebuild. Instead of doing a "standard" over-bore on the 1.9L, you can simply bore to 2.0L pistons. You can get 2.0L cast pistons from the OGTS. Or as Rally Bob mentioned, you can get forged pistons custom made.

To have an "equivalent" (or better) 1.9L-to-2.0L you should also have your head "done" with larger valves. (The 2.0L came with larger intake and exhaust valves.) (email me if you are interested in having this work done: [email protected]

However, getting a complete 2.0L engine from the OGTS may be the better way to go. First, I think that the cost of properly rebuilding a 1.9L (or 1.9L-to-2.0L) is about the same as getting a remanufactured 2.0L from the OGTS. You will also be able to do the engine swap in a week-end if you buy the 2.0L outright. (OGTS sells the reman 2.0L engines "outright") So, you may want contact the OGTS to check out the priceing of the various parts vs and reman 2.0L.
 

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Senior Contributor
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730 Posts
:( Well, I guess in the larger scheme of things it's easier to buy the ready made engine from OGTS. But it sure takes away from the fun when you use to be able to simply change your cam, check the bore and toss in the overhaul kit. I was pricing the parts and the markup just scares the willies off of me. I know it aign't the 70's anymore, but please!. Let's not overprice the parts and extinc the little beauty.
 
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