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Old 12-05-2007, 11:28 AM   #1
richamer1
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Default Swap guide

I checked the swap guide it did not state SOHC or DOHC. I need to put a engine in my 92 SC DOHC it appears that it needs to be a 91 or 92 . Can I use a SOHC engine without any mods ?

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Old 12-05-2007, 11:50 AM   #2
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Default Re: Swap guide

You should be able to use an SOHC. What's the problem with the current engine? I got your PM about the 91 DOHC my brother has for sale. The 91's had a different mounting scheme than all the other model years. You could probably make it work by changing the timing cover.

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Old 12-05-2007, 12:37 PM   #3
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Default Re: Swap guide

I've seen a very few posts that mention that there is a way to adapt the '91 to the TAM system even in a '91. I don't know anything about it though.

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Old 12-05-2007, 12:44 PM   #4
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Default Re: Swap guide

For what a '92 is worth, and for the cost/effort required to _downgrade_ to an SOHC (those coupes never end got an SOHC), you'd be better off just buying another old Saturn.

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Old 12-05-2007, 01:02 PM   #5
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Default Re: Swap guide

Well I thought the problem was just the timing chain. But last night with the timing chain removed I tried to line up the crank and cams. When I turn the crank it makes a sudden stop just before 12:00. No matter what posistion the cams are in. That led me to believe that i needed much more than a timing chain.
Quote:
Originally Posted by blackeagle1 View Post
You should be able to use an SOHC. What's the problem with the current engine? I got your PM about the 91 DOHC my brother has for sale. The 91's had a different mounting scheme than all the other model years. You could probably make it work by changing the timing cover.

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Old 12-05-2007, 01:04 PM   #6
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Default Re: Swap guide

Quote:
Originally Posted by richamer1 View Post
I checked the swap guide it did not state SOHC or DOHC. I need to put a engine in my 92 SC DOHC it appears that it needs to be a 91 or 92 . Can I use a SOHC engine without any mods ?
For what it would probably cost you in parts to do this, it would be easier to just buy a used 1991 or 1992 engine. But finding one in good condition is about a likely as winning the lottery.

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Old 12-05-2007, 04:09 PM   #7
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Default Re: Swap guide

Quote:
Originally Posted by richamer1 View Post
Well I thought the problem was just the timing chain. But last night with the timing chain removed I tried to line up the crank and cams. When I turn the crank it makes a sudden stop just before 12:00. No matter what posistion the cams are in. That led me to believe that i needed much more than a timing chain.
Be careful about turning the crankshaft with the timing chain off. This is an interferance engine which means the valves and pistons will collide if the valves are open when the pistons come up to top center. There is very little chance there is a cam position where there is not at least one or two valves open to some degree.

Normally when doing engine work, the engine is positioned with the #1 cyl at top center prior to removing the timing chain. When reassembling, if you have to move somthing, you take the crank off top center by rotating it 90 deg, clockwise as facing the crank pulley. This will take all the pistons that are up, down. You then can safely rotate the cam(s) to the position relative to top center #1. You then can rotate the crank BACK (counter clockwise) to the top center position.

BUT if you rotate the crank through a full 360 degrees with no timing chain, you can be assured you will hit a valve or two in the process. The only way you can safely rotate the crank a full 360 degrees is to either have the head off or the cam(s) off the head so as all the valves are closed.

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Old 12-05-2007, 04:09 PM   #8
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Default Re: Swap guide

Low Saturn,

What do you have to do to put a 91 engine in a 92? Change the timing cover? Is there anything else?

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Old 12-05-2007, 10:01 PM   #9
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Default Re: Swap guide

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Originally Posted by blackeagle1 View Post
Low Saturn,

What do you have to do to put a 91 engine in a 92? Change the timing cover? Is there anything else?
yeah, just swap out the cover.

...
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