Buying a n/t engine for tsi awd car?

[pezlow]

Ok so my friend bought a 91 talon tsi awd but the engine is bad and he wants to buy an n/t engine and swap out everything so its like a turbo engine and put it in his car. Will this work since he already has a turbo engine to donate the internals and the wires are already there since it is a turbo car to begin with. Or would it be better to rebuild the original engine? Hes going for cheapest way possible to get the car on the road. Somewere around 600 dollars thanks

 

[wilderg88]

well it depends on whats wrong with his engine. and see if it would be cheaper to repair. and i believe that the NT engines have high compression pistons.

 

[Billiam]

rebuild the original engine with 2g piston heads and 1g rods. a 4g63 nt engine isn't worth the trubble. What is wrong with the car? How do you know the engine is bad?

 

[livedsm4g63]

Rebuild the engine

 

[rlacasse1]

First off, the n/t engine does not have oil squirter in it for the pistons like the turbo engine does.

And secondly, why wouldn't he just rebuild the first one if it is still internally good? Why is it bad? Because you would think you wouldn't want to build an engine out of shit that came out of a bad engine.

 

[pezlow]

The engine is drinking oil like an alcoholic and shacks really, really bad. He thinks its the valves but not sure.

I told him to rebuild but he wants cheap even if it means more work.

He knows its not the bottom end becuase he got new pistons and rings for it and it didnt change a thing.

 

[Billiam]

Is it burning the oil? White smoke comming out of the exaust or funny smells? More details please! Tell him if he is willing to do more work to be cheeper, than he can wait to fix it properly.

 

[rlacasse1]

Did he not rebuild the rest of the engine when he put those pistons and rings in? Because he should have, and it would be really hard to avoid doing that.

He should just rebuild his. Tear it all down, and rebuild it RIGHT.

 

[pezlow]

Tons of white smoke out of the exuast. He didnt think hes head was the problem at first just thought the pistons were bad and leaking

 

[Billiam]

New piston rings dude, he should really do things properly and double check everything than double check everything again!

 

[pezlow]

So it is the head? Rebuilding a head cheap or buy a rebuilt one ready to drop in? Thanks guys and I know he isnt the brightest but hes 17 and learning

 

[rlacasse1]

If it is white smoke pouring out the car then you're burning coolant.

Do you know what kind of shape the head is in?

When he did the pistons and rings did he have the head milled and use a new head gasket? Because I have met cheap asses that attempt to reuse head gaskets, and it never works out.

 

[pezlow]

No he got a new head gasket from autozone and still the same thing white smoke like a thick fog. He had the walls honed.

No the head wasnt milled. Nothing is done to the head so far waiting for good advice

Edit: he just said its leaking oil out of the exuast gaskits? Its from the 3rd cylinder only he checked the exuast manifold for oil

 

[Billiam]

Do a compression test to see if its a head gasket

 

[pezlow]

He did that. The results were cyl1-155, cyl2-160, cyl3-90, cyl4-158. Now thats with a cold engine not normal temp and put oil in the 3rd cyl. and it went to 150

Im going to bed now but keep the advice coming I will check back in the morning. Thanks

 

[rlacasse1]

If it leaking oil out of the exhaust gasket then he probably has an issue with one of the exhaust manifold studs. One of the Studs, can't remember which one, but it is one of the center bottom ones, goes back into an oil galley. They can leak. Put some silicone on the stud and thread it back into the head to kill the leak.

As for the white smoke, is it coming from the tail pipe at the rear? Or is it smoking out the engine bay?

Also, if he didn't mill the head then it is possible that it is leaking. If there wasn't a true flat surface then it won't seal up properly.

 

[jsawyer]

Just so you all know everything in the 6 bolt n/t motor is the same as the turbo 6 bolt except there are no oil squirters ,the piston are higher compression ,the oil pump ,and the cams.

 

[coty]

im 17 too one quick question are the heads the same between n/t and turbo (besides the cams)

 

[jsawyer]

as far as i know they are as long as they are both from the same style as in 6 or 7 bolt

 

[92tsiawdguy]

heads are the same other then cams. If you have low compression in cyl 3 and you put oil in it and it went up to 150 then you have bad rings. If it was the head the compression would stay the same once oil was added.(this is only the case if the valves are bent)

 

[Clinical]

It sounds like either rings or a headgasket.

There's no reason to waste your money on another motor.. It shouldnt cost a good shop more than like 150 to put new rings in, assuming you can pull your motor yourself. Headgasket is even easier.

 

[thomcasey]

Ok so my friend bought a 91 talon tsi awd but the engine is bad and he wants to buy an n/t engine and swap out everything so its like a turbo engine and put it in his car. Will this work since he already has a turbo engine to donate the internals and the wires are already there since it is a turbo car to begin with. Or would it be better to rebuild the original engine? Hes going for cheapest way possible to get the car on the road. Somewere around 600 dollars thanks

If the engine is good, it will work Fine. Mine is the same setup, over 14,000 miles with no issues. Just keep the Octane high and the boost below 16lbs. Oil squirters are not necessary. In fact, my engine does not even have an oil cooler!!

It makes a great setup to use while the old engine is rebuilt. No need to swap the internals, run the n/t with all the turbo stuff and rebuild the original.

 

[gakattack456]

Sounds like a few problems. Valve seals, guides and piston rings on 3rd cylinder if adding oil fixed your compression. I say valve seals or head gasket/ not having a flat head that's causing coolant to burn. Start the car and take off the coolant cap located on the radiator. If it's a head gasket you should see bubbling there.

 

[AGSX2NV]

I had a similar problems and a couple of people (mechanics) thought it was a bad turbo "or" bad piston rings. I started doing my own research and found that it was in fact my valve guide seals the entire time. The head looked great and had low miles but once i took the head apart i changed out the valve guide seals added arp head studs, cams, new timing belt with water pump since i already had it apart and NO SMOKE Hope this may be the problem as it isnt that much if your keeping it stock

 

[92tsiawdguy]

Sounds like a few problems. Valve seals, guides and piston rings on 3rd cylinder if adding oil fixed your compression. I say valve seals or head gasket/ not having a flat head that's causing coolant to burn. Start the car and take off the coolant cap located on the radiator. If it's a head gasket you should see bubbling there.

where are you getting this info? if you have low compression and you add oil to the cylinder and the compression goes up it means the rings are bad or valve guides are cracked Not the valve seals. The oil that you are adding is going on the cylinder walls and the piston top. Its not going on the valve seals. And oil isnt going to magically fix a blown head gasket. Its the rings or guides. Ive built more then one engine. There is nothing wrong with the head gasket. You have a ring problem. The piston rings probably werent clocked correctly when installed or the piston and/or cylinder walls are warped.