engine and drivetrain Standard and Tii engines

[DeanR32]

Hi there faq 

 

im sitting here mulling over what engine I should teansplant in my 02, and wondered what differences there are between the stock 2.0, and the tii engines? I have both in each car (minus the injection system on the tii, it's on carb now), so if I wanted to run an M10 on maybe a hot cam and weber 40's etc, would the tii have any benefits over the standard M10?

 

and how could I identify a tii engine? It's not original to the car it came with (it's in a 1602) so should it have anything to id it by?

 

cheers

Dean

[AceAndrew]

The only functional difference internally is going to be your compression ratio (if both are stock).  Pop a bore-scope down in each and check the piston crown.

 

Provided that the stock 2.0L is not an early variety.

Edited July 28, 2016 by AceAndrew

[DeanR32]

No external signs? What am I looking for with a scope? I suppose a crowned or flat piston?

 

 

[JerryC]

The VIN number on the block is the easiest way to tell what kind of '02 an engine came from. It's stamped on the top of the block just above the starter. Use the various VIN guides to find the source of the engine's number.

[Conserv]

1 hour ago, DeanR32 said:

 

...and how could I identify a tii engine? It's not original to the car it came with (it's in a 1602) so should it have anything to id it by?

 

cheers

Dean

 

If the engine came out of a U.S.-spec tii, the first three numbers of the engine number are 276xxxx (1972-73 model years) or 278xxxx (1974 model year).  The engine number, bracketed by "+" signs, is on a flat machined boss on the left rear side of the engine block, just above the starter's nose.  On that same boss, but turned 180 degrees from the engine number, the block will be stamped "2,0" as in "2 liters."  In addition, a tii engine block will have an oil drain for the Kugelfischer pump, an extra hole on the left side near the dip stick location.

 

Regards,

 

Steve

 

Edited July 28, 2016 by Conserv

[AceAndrew]

29 minutes ago, DeanR32 said:

 I suppose a crowned or flat piston?

 

 

 

Exactly.  Higher-compression = popup on piston.  Now there's a half-way decent chance your normal 02 engine was rebuild with higher-comp. pistons sometime during it's 40 year life.  If that's the case then there is no functional difference between the two engines (supposing the same pop up).

Edited July 28, 2016 by AceAndrew