Will a motor from a non turbo work in a turbo car?

[Sammyvr4]

My motor is messed up in my 91 vr4 and I need a new one and was just wondering if a motor from a non turbo car would work in it?

[Forest Gump]

that depends on your definition of "work".

Yes, it will run if you swap the accessories and turbos/manifolds over.

The compression is 10:1 vs the 8:1 of the turbo motor and this will require a tuning and running less boost than the 8:1 motor can.

[lDoomZdaYl]

that depends on your definition of "work".

Yes, it will run if you swap the accessories and turbos/manifolds over.

The compression is 10:1 vs the 8:1 of the turbo motor and this will require a tuning and running less boost than the 8:1 motor can.

Well said.

[Sammyvr4]

So better off to go ahead and get a turbo motor?

[Patryn]

Yes, or else you will be limited to about 7psi. Compression is higher on the NA engine, so your detonation threshold is lower. However, some of the guys around here do the TT conversion onto their NA engines. Might want to check with them if you have already bought an NA engine.

[shadow334485]

What is thrashed about the VR4 engine? Might be cheaper to replace pistons, bearings and machine work than to attempt to make a N/A engine work

[lDoomZdaYl]

you can do 10 psi or maybe a bit higher but theres always meth injection.

[QSpectre]

Isn't the turbo engine forged and the N/A one not forged?

[Forest Gump]

Originally Posted by QSpectre

Isn't the turbo engine forged and the N/A one not forged?

no, year for year forged parts were the same.

[Sammyvr4]

Someone didn't put the thrust bearings in correctly or something in correctly and the peices rubbed some ridges in the block. I'm going to try to get something machined but it doesn't look promising. Does anyone know where I can get just a block for my 91 Vr4?