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Old 07-13-2019, 06:31 PM   #1 (permalink)
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Default N/A motor in a VR4?

So first off this is not a permanent solution i am looking for.

but the motor in my VR4 is currently blown and is going to take me a year or so to finish building. but i have a motor in my parts SL. if i put all my bits from the VR4 onto it would it run at all?

i'm not expecting to hit the same HP because of the difference in compression but would it allow me to drive around and enjoy my car a bit?
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Old 07-13-2019, 07:14 PM   #2 (permalink)
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Default Re: N/A motor in a VR4?

As long as you don't beat on it it should be okay but I'm not 100% positive

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1991 Fiji/Mystic Blue R/T TT 1 of 235(paint/R/T TT only, can't find more info, VIN is a 1 of none number)
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Old 07-14-2019, 12:23 PM   #3 (permalink)
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Default Re: N/A motor in a VR4?

If you are putting the turbos on the DOHC NA 10:1 engine keep the boost around 6psi or will you will be fighting knock and use the 360cc injectors. Not so sure of the capabilities of the single cam motor.
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Old 07-14-2019, 04:11 PM   #4 (permalink)
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Default Re: N/A motor in a VR4?

yeah its the DOHC NA motor
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Old Today, 11:20 AM   #5 (permalink)
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Default Re: N/A motor in a VR4?

Sorry not an answer to your question.. but if you decide not to go that route.. would you be willing to part ways with your DOHC NA motor?
I ask because my NA is in need of a rebuild (still my first choice), but may be easier to swap in a new engine if it's in good shape/low enough mileage and right price.

This peaked my interest when I saw you're in Alberta. I'm now in Manitoba so might actually makes sense for me.

Just let me know if it comes to that being an option.
Cheers,
Ryan
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Old Today, 02:27 PM   #6 (permalink)
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Default Re: N/A motor in a VR4?

Stock 10:1 engine handles the stock twins fine 10-12 psi is fairly safe. untuned on stock injectors with 93 Octane available - however, i did have some occasional very light knock during very specific scenarios when running 91 octane, so if you are in a place where 91 is only available keep that in mind.

93 with 10-15% ethanol gets along great with a untuned 10:1 TT overall.

even with my 16T's my 10:1 was still happy until about 13-14 psi on stock injectors and ECU.

if there was metal in the oil of your old engine, just make sure you clean all of the metal out of the oil lines, turbos, and oil cooler before you go slapping it on your NA Engine otherwise everything will get trashed.
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