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Old 01-20-2012, 08:11 PM   #1
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20r head on 22r block

hello in a oopsy i put a 20r head on my 22r block. found the right intake to bolt up. has a weber carb any advice on what to watch for and how to hook everything up when i drop the engine in. any help would be appreciated
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Old 01-21-2012, 10:01 PM   #2
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How did you make that a oopsy? Ive never done it but I was for sure there was alot of mill work to go into a head before you could do that.. Something like pistons colliding with the head and catastrophic failure. Gonna need a lil more info for this one bro
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Old 01-21-2012, 10:15 PM   #3
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The bolt patern and combustion chambers r the same everything clears valve train from 22r head bolts right up only difference I can find is the intake manifold.
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Old 01-21-2012, 10:18 PM   #4
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The block is from 81 the head I found out is a 79. Block has been completely redone. By hand everything clears and valve train is working fine no interference from pistons to head other than intake manifold everything is the same im just wondering about vacume lines and coolant passage
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Old 01-22-2012, 12:01 PM   #5
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Alrite so from what I can find out for ya is that it will work but the timing chain is gonna be off. I cant tell if its gonna be to tight or to loose. I was told that you should measure the heads height and that of a 22R and see what the difference is. That seems to be the only difference. Also make sure the pistons dont come into contact with the head. Some of the older 20r engines pistons and combustion chambers were shaped different then the 22r and even some of the 22r engines are diff from the 22re when your talking pistons. As far as wiring is concerned are you talking about things like acc. IE: the alternator and A/C etc etc.? Im not the best with wiring but Ill tell ya all I know. Hope it helps
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Old 01-22-2012, 12:07 PM   #6
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Also.. Try this link. Its another forum thats pretty much the same question that you have. http://www.yotatech.com/f120/trying-...-block-223010/



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Old 01-22-2012, 12:28 PM   #7
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OMG, guys, this is a typical 20r/22r hybrid. He's got the right years. Timing chain won't be off unless he uses a post 85 kit.

You must use the 20r intake manifold. Exhaust manifold is the same.
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Old 01-22-2012, 12:30 PM   #8
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I have been talking about this with another guy. And have been told as long as u use the older 22r block with the later 20r head that everything will work. Just wondering about the diferances in vacume and alt. No ac
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Old 01-22-2012, 12:34 PM   #9
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Correct. Normally when you build a hybrid, you should have the head ported, but it will work regardless. But you have to use the 20r intake manifold. Not sure on the vacuum. With the weber all you should need is the vacuum advance on the distributor supplied by the carb. (use front most port, block off the other). Alternator might be tricky. What year is the truck? What year is the alternator? Somewhere throughout the years and I am not sure when but they went from an external regulated to an internal regulated. Mounting should be the same.
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Old 01-22-2012, 01:01 PM   #10
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The truck is a 81. The head was redone along with the block didn't notice it was a 20r head till after its been done and assembled found it out when the 22r intake would not line up I have the corect intake for the 20r . Waiting on gaskets for the 20r intake and we will c
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Old 01-22-2012, 02:21 PM   #11
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20r head on 22r block puts out alot more power, btw.
It's something i'd like to do on my pickup, it's just a matter of finding a head and block lol
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Old 01-22-2012, 04:33 PM   #12
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Peow130 I have an extra head and intake for the 20r might be able to come up with a starter block that's needs re done. Contact me threw roelker87@yahoo.com if interested
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Old 01-23-2012, 09:53 AM   #13
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Where are you located? Tax time is rolling around, and my pickup is smog exempt now hehe
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Old 01-23-2012, 05:55 PM   #14
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I have done meny of these .. and IMO it's not worth it , unless your "just boltin' it on" . If your going for HP , your way better off to do an engine swap . my last hi-brid cost me 4G .. and my SC 5Vzfe cost me 5 .. about double the HP



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Old 01-24-2012, 05:38 AM   #15
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Not to Highjack the thread but this might be something that you will run into Im got my engine together 20/22r the only thing that I ran into is the thermostat housing it looks like the hoset that runs to the radiator will hit the mechanical fuel pump, I do not want to to to an electric pump so I need to find a 20r thermostat housing that came on a truck/car with a mechanical fuel pump. does any one have any idea where or on what to find one?

Thanks
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Old 01-24-2012, 08:50 AM   #16
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Dirtdobberoffroad have one what's it worth to u and will u pay for shiping?
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Old 01-25-2012, 03:31 PM   #17
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I sent you a PM Roelker87 and if I may ask what did it come off of?
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Old 01-25-2012, 03:51 PM   #18
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It comes off of 79 toyota pickup. Sorry for some reason it wont let me open thread give me a call 9709464517
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Old 01-26-2012, 05:09 AM   #19
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Ok I'll try.
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Old 01-26-2012, 05:09 AM
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