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Engine - Turbo & Block Modifications and upgrades to maximize your Dodges turbo output & Improving strength and durability - pistons to crank.

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Old 12-30-2012, 07:34 PM   #1
89 block/tbi, what to do for turbo  
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I have a 89 horizon,2.2 tbi, and am wonder if/where i can get a hole drilled for a oil line for the turbo. and the 4th cylinder coolant mod.
im going to be building a turbo motor.fully built. H beams and 20over Venolia's, custom 2 pcs intake with "LENGELS" custom flange when available, either F.A.S.T or megasquirt , most likey a stage 2 or 3 head from forward motion, depending on room- SS tubular header, and every other toy to go along with big boost, thanks!
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Old 12-30-2012, 08:41 PM   #2
Re: 89 block/tbi, what to do for turbo  
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Oil line feed is just from distribution block off front of motor. If you are talking about oil return, then either a 43/64" hole needs to be drilled in the boss at the back of block, or a oil return line added to oil pan.
As far as 4th cylinder coolant mod, I don't understand your question.
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Old 12-30-2012, 09:39 PM   #3
Re: 89 block/tbi, what to do for turbo  
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Oil line feed is just from distribution block off front of motor. If you are talking about oil return, then either a 43/64" hole needs to be drilled in the boss at the back of block, or a oil return line added to oil pan.
As far as 4th cylinder coolant mod, I don't understand your question.
wheres the dis block at ? or whats it for ??
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Old 12-30-2012, 10:16 PM   #4
Re: 89 block/tbi, what to do for turbo  
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Dr. Johny Dodge is keeping our cars runningDr. Johny Dodge is keeping our cars running
at the front of the motor , above the front motor mount you will see a couple of do hickys screwed into a fitting that's threaded into the front of the motor
these are the oil pressure switch and oil press sender if you have an oil gauge in the cluster

a turbo motor has a longer fitting that allows room for both the oil senders and an extra hole to add an oil supply line that runs to the turbo bearing
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Old 01-02-2013, 03:25 PM   #5
Re: 89 block/tbi, what to do for turbo  
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I've done this conversion so I know what he's talking about. For the oil return you can read the message above and drill your own hole (I did this) or have the machine shop drill it for you. It's at aprox 45 degree angle to the block and you then can tap the new oil return tube into the block. The cooling holes are on the top of the block between the cylinders (cross drilled). Check the www.thedodgegarage.com for pics of the block as I don't recall if they're drilled on the front or the back side between the cylinders. You can use an old headgasket to get them started as a template. They too were drilled on an angle and I did these myself. If someone has a turbo common block sitting around they can measure the hold size for you (1/8" comes to mind) and I think again at a 45 degree angle. Good luck.
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Old 01-02-2013, 07:35 PM   #6
Re: 89 block/tbi, what to do for turbo  
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Originally Posted by Dr. Johny Dodge View Post
at the front of the motor , above the front motor mount you will see a couple of do hickys screwed into a fitting that's threaded into the front of the motor
these are the oil pressure switch and oil press sender if you have an oil gauge in the cluster

a turbo motor has a longer fitting that allows room for both the oil senders and an extra hole to add an oil supply line that runs to the turbo bearing
alright thanks, i will have to check it out, havent looked lately.
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Old 01-02-2013, 07:37 PM   #7
Re: 89 block/tbi, what to do for turbo  
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Originally Posted by cawcislo View Post
I've done this conversion so I know what he's talking about. For the oil return you can read the message above and drill your own hole (I did this) or have the machine shop drill it for you. It's at aprox 45 degree angle to the block and you then can tap the new oil return tube into the block. The cooling holes are on the top of the block between the cylinders (cross drilled). Check the Donovan's Dodge Garage for pics of the block as I don't recall if they're drilled on the front or the back side between the cylinders. You can use an old headgasket to get them started as a template. They too were drilled on an angle and I did these myself. If someone has a turbo common block sitting around they can measure the hold size for you (1/8" comes to mind) and I think again at a 45 degree angle. Good luck.
drill the block for the oil return? cant you just weld a pung onto the oil pan and tap it for a drain back?
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Old 01-03-2013, 09:19 AM   #8
Re: 89 block/tbi, what to do for turbo  
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drill the block for the oil return? cant you just weld a pung onto the oil pan and tap it for a drain back?
You can also do that.
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Old 01-05-2013, 01:04 PM   #9
Re: 89 block/tbi, what to do for turbo  
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Alright got it, thanks! the whole oiling thing got me a bit confused ,
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